[PATCH v2 00/28] Add new Renesas RZ/G3S SoC and RZ/G3S SMARC EVK

[PATCH v2 00/28] Add new Renesas RZ/G3S SoC and RZ/G3S SMARC EVK

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Hi,

This patch series adds initial support for The Renesas RZ/G3S (R9A08G045{S33})
SoC. The RZ/G3S device is a general-purpose microprocessor with a
single-core Arm® Cortex®-A55 (1.1GHz) and a dual-core Arm® Cortex®-M33 (250MHz),
perfect for an IOT gateway controller.

This includes:
- SoC identification;
- clocks (core clocks, pin controller clock, serial interface, SD ch0
  clock) and corresponding resets;
- minimal device tree for SoM and carrier boards.

With this series Linux can boot from eMMC or SD card. The eMMC and uSD
interface are multiplexed on the SoM; selection is made using a hardware
switch.

Patches are gouped as follows:
- 01    documents scif support;
- 02-05	contain fixes on clock drivers identified while adding RZ/G3S
	support
- 06	clock cleanups identifies while adding support for RZ/G3S
- 07-13	clock changes needed by RZ/G3S
- 14-21	pinctrl changes needed by RZ/G3S
- 22-28 device tree support for RZ/G3S

Changes in v2:
- addressed review comments
- collected tags
- removed from series patches that were already integrated
- added patches:
	- [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false
	- [PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM
	- [PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK
- please see individual patches for detailed changes

Claudiu Beznea (28):
  dt-bindings: serial: renesas,scif: document r9a08g045 support
  clk: renesas: rzg2l: wait for status bit of SD mux before continuing
  clk: renesas: rzg2l: lock around writes to mux register
  clk: renesas: rzg2l: trust value returned by hardware
  clk: renesas: rzg2l: fix computation formula
  clk: renesas: rzg2l: remove critical area
  clk: renesas: rzg2l: add support for RZ/G3S PLL
  clk: renesas: rzg2l: add struct clk_hw_data
  clk: renesas: rzg2l: remove CPG_SDHI_DSEL from generic header
  clk: renesas: rzg2l: refactor sd mux driver
  clk: renesas: rzg2l: add a divider clock for RZ/G3S
  dt-bindings: clock: renesas,rzg2l-cpg: document RZ/G3S SoC
  clk: renesas: add minimal boot support for RZ/G3S SoC
  pinctrl: renesas: rzg2l: index all registers based on port offset
  pinctrl: renesas: rzg2l: adapt for different SD/PWPR register offsets
  pinctrl: renesas: rzg2l: adapt function number for RZ/G3S
  pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration
  pinctrl: renesas: rzg2l: add support for different ds values on
    different groups
  dt-bindings: pinctrl: renesas: set additionalProperties: false
  dt-bindings: pinctrl: renesas: document RZ/G3S SoC
  pinctrl: renesas: rzg2l: add support for RZ/G3S SoC
  arm64: dts: renesas: add initial DTSI for RZ/G3S SoC
  dt-bindings: arm: renesas: document RZ/G3S SMARC SoM
  arm64: dts: renesas: rzg3l-smarc-som: add initial support for RZ/G3S
    SMARC SoM
  arm64: dts: renesas: rzg3s-smarc: add initial device tree for RZ SMARC
    Carrier-II Board
  dt-bindings: arm: renesas: document SMARC Carrier-II EVK
  arm64: dts: renesas: r9a08g045s33-smarc: add initial device tree for
    RZ/G3S SMARC EVK board
  arm64: defconfig: enable RZ/G3S (R9A08G045) SoC

 .../bindings/clock/renesas,rzg2l-cpg.yaml     |   1 +
 .../pinctrl/renesas,rzg2l-pinctrl.yaml        |  23 +-
 .../bindings/serial/renesas,scif.yaml         |   1 +
 .../bindings/soc/renesas/renesas.yaml         |  13 +
 arch/arm64/boot/dts/renesas/Makefile          |   2 +
 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    | 139 ++++
 .../boot/dts/renesas/r9a08g045s33-smarc.dts   |  17 +
 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi |  14 +
 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     | 142 ++++
 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi  |  28 +
 arch/arm64/configs/defconfig                  |   1 +
 drivers/clk/renesas/Kconfig                   |   7 +-
 drivers/clk/renesas/Makefile                  |   1 +
 drivers/clk/renesas/r9a07g043-cpg.c           |  19 +-
 drivers/clk/renesas/r9a07g044-cpg.c           |  19 +-
 drivers/clk/renesas/r9a08g045-cpg.c           | 213 ++++++
 drivers/clk/renesas/rzg2l-cpg.c               | 478 ++++++++++--
 drivers/clk/renesas/rzg2l-cpg.h               |  33 +-
 drivers/pinctrl/renesas/pinctrl-rzg2l.c       | 705 ++++++++++++++----
 include/dt-bindings/clock/r9a08g045-cpg.h     | 242 ++++++
 20 files changed, 1860 insertions(+), 238 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
 create mode 100644 drivers/clk/renesas/r9a08g045-cpg.c
 create mode 100644 include/dt-bindings/clock/r9a08g045-cpg.h

-- 
2.39.2

[PATCH v2 00/28] Add new Renesas RZ/G3S SoC and RZ/G3S SMARC EVK

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Hi,

This patch series adds initial support for The Renesas RZ/G3S (R9A08G045{S33})
SoC. The RZ/G3S device is a general-purpose microprocessor with a
single-core Arm® Cortex®-A55 (1.1GHz) and a dual-core Arm® Cortex®-M33 (250MHz),
perfect for an IOT gateway controller.

This includes:
- SoC identification;
- clocks (core clocks, pin controller clock, serial interface, SD ch0
  clock) and corresponding resets;
- minimal device tree for SoM and carrier boards.

With this series Linux can boot from eMMC or SD card. The eMMC and uSD
interface are multiplexed on the SoM; selection is made using a hardware
switch.

Patches are gouped as follows:
- 01    documents scif support;
- 02-05	contain fixes on clock drivers identified while adding RZ/G3S
	support
- 06	clock cleanups identifies while adding support for RZ/G3S
- 07-13	clock changes needed by RZ/G3S
- 14-21	pinctrl changes needed by RZ/G3S
- 22-28 device tree support for RZ/G3S

Changes in v2:
- addressed review comments
- collected tags
- removed from series patches that were already integrated
- added patches:
	- [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false
	- [PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM
	- [PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK
- please see individual patches for detailed changes

Claudiu Beznea (28):
  dt-bindings: serial: renesas,scif: document r9a08g045 support
  clk: renesas: rzg2l: wait for status bit of SD mux before continuing
  clk: renesas: rzg2l: lock around writes to mux register
  clk: renesas: rzg2l: trust value returned by hardware
  clk: renesas: rzg2l: fix computation formula
  clk: renesas: rzg2l: remove critical area
  clk: renesas: rzg2l: add support for RZ/G3S PLL
  clk: renesas: rzg2l: add struct clk_hw_data
  clk: renesas: rzg2l: remove CPG_SDHI_DSEL from generic header
  clk: renesas: rzg2l: refactor sd mux driver
  clk: renesas: rzg2l: add a divider clock for RZ/G3S
  dt-bindings: clock: renesas,rzg2l-cpg: document RZ/G3S SoC
  clk: renesas: add minimal boot support for RZ/G3S SoC
  pinctrl: renesas: rzg2l: index all registers based on port offset
  pinctrl: renesas: rzg2l: adapt for different SD/PWPR register offsets
  pinctrl: renesas: rzg2l: adapt function number for RZ/G3S
  pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration
  pinctrl: renesas: rzg2l: add support for different ds values on
    different groups
  dt-bindings: pinctrl: renesas: set additionalProperties: false
  dt-bindings: pinctrl: renesas: document RZ/G3S SoC
  pinctrl: renesas: rzg2l: add support for RZ/G3S SoC
  arm64: dts: renesas: add initial DTSI for RZ/G3S SoC
  dt-bindings: arm: renesas: document RZ/G3S SMARC SoM
  arm64: dts: renesas: rzg3l-smarc-som: add initial support for RZ/G3S
    SMARC SoM
  arm64: dts: renesas: rzg3s-smarc: add initial device tree for RZ SMARC
    Carrier-II Board
  dt-bindings: arm: renesas: document SMARC Carrier-II EVK
  arm64: dts: renesas: r9a08g045s33-smarc: add initial device tree for
    RZ/G3S SMARC EVK board
  arm64: defconfig: enable RZ/G3S (R9A08G045) SoC

 .../bindings/clock/renesas,rzg2l-cpg.yaml     |   1 +
 .../pinctrl/renesas,rzg2l-pinctrl.yaml        |  23 +-
 .../bindings/serial/renesas,scif.yaml         |   1 +
 .../bindings/soc/renesas/renesas.yaml         |  13 +
 arch/arm64/boot/dts/renesas/Makefile          |   2 +
 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    | 139 ++++
 .../boot/dts/renesas/r9a08g045s33-smarc.dts   |  17 +
 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi |  14 +
 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     | 142 ++++
 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi  |  28 +
 arch/arm64/configs/defconfig                  |   1 +
 drivers/clk/renesas/Kconfig                   |   7 +-
 drivers/clk/renesas/Makefile                  |   1 +
 drivers/clk/renesas/r9a07g043-cpg.c           |  19 +-
 drivers/clk/renesas/r9a07g044-cpg.c           |  19 +-
 drivers/clk/renesas/r9a08g045-cpg.c           | 213 ++++++
 drivers/clk/renesas/rzg2l-cpg.c               | 478 ++++++++++--
 drivers/clk/renesas/rzg2l-cpg.h               |  33 +-
 drivers/pinctrl/renesas/pinctrl-rzg2l.c       | 705 ++++++++++++++----
 include/dt-bindings/clock/r9a08g045-cpg.h     | 242 ++++++
 20 files changed, 1860 insertions(+), 238 deletions(-)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
 create mode 100644 drivers/clk/renesas/r9a08g045-cpg.c
 create mode 100644 include/dt-bindings/clock/r9a08g045-cpg.h

-- 
2.39.2


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[PATCH v2 01/28] dt-bindings: serial: renesas,scif: document r9a08g045 support

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document support for the Serial Communication Interface with FIFO (SCIF)
available in the Renesas RZ/G3S (R9A08G045) SoC. SCIF interface in
Renesas RZ/G3S is similar to the one available in RZ/G2L.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 Documentation/devicetree/bindings/serial/renesas,scif.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index 99030fc18c45..4610a5bd580c 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -79,6 +79,7 @@ properties:
           - enum:
               - renesas,scif-r9a07g043      # RZ/G2UL and RZ/Five
               - renesas,scif-r9a07g054      # RZ/V2L
+              - renesas,scif-r9a08g045      # RZ/G3S
           - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
 
   reg:
-- 
2.39.2

[PATCH v2 01/28] dt-bindings: serial: renesas,scif: document r9a08g045 support

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document support for the Serial Communication Interface with FIFO (SCIF)
available in the Renesas RZ/G3S (R9A08G045) SoC. SCIF interface in
Renesas RZ/G3S is similar to the one available in RZ/G2L.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 Documentation/devicetree/bindings/serial/renesas,scif.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/serial/renesas,scif.yaml b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
index 99030fc18c45..4610a5bd580c 100644
--- a/Documentation/devicetree/bindings/serial/renesas,scif.yaml
+++ b/Documentation/devicetree/bindings/serial/renesas,scif.yaml
@@ -79,6 +79,7 @@ properties:
           - enum:
               - renesas,scif-r9a07g043      # RZ/G2UL and RZ/Five
               - renesas,scif-r9a07g054      # RZ/V2L
+              - renesas,scif-r9a08g045      # RZ/G3S
           - const: renesas,scif-r9a07g044   # RZ/G2{L,LC} fallback
 
   reg:
-- 
2.39.2


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[PATCH v2 02/28] clk: renesas: rzg2l: wait for status bit of SD mux before continuing

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Hardware user manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf,
chapter 7.4.7 Procedure for Switching Clocks by the Dynamic Switching
Frequency Selectors) specifies that we need to check CPG_PL2SDHI_DSEL for
SD clock switching status.

Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- initialized msk

 drivers/clk/renesas/rzg2l-cpg.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 9baae7bb7094..5343d04fd70d 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -188,7 +188,8 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	u32 off = GET_REG_OFFSET(hwdata->conf);
 	u32 shift = GET_SHIFT(hwdata->conf);
 	const u32 clk_src_266 = 2;
-	u32 bitmask;
+	u32 msk, val, bitmask;
+	int ret;
 
 	/*
 	 * As per the HW manual, we should not directly switch from 533 MHz to
@@ -202,14 +203,10 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	 * the index to value mapping is done by adding 1 to the index.
 	 */
 	bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16;
+	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
 	if (index != clk_src_266) {
-		u32 msk, val;
-		int ret;
-
 		writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off);
 
-		msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
-
 		ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
 					 !(val & msk), 100,
 					 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
@@ -221,7 +218,13 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 
 	writel(bitmask | ((index + 1) << shift), priv->base + off);
 
-	return 0;
+	ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
+				 !(val & msk), 100,
+				 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+	if (ret)
+		dev_err(priv->dev, "failed to switch clk source\n");
+
+	return ret;
 }
 
 static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
-- 
2.39.2

[PATCH v2 02/28] clk: renesas: rzg2l: wait for status bit of SD mux before continuing

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Hardware user manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf,
chapter 7.4.7 Procedure for Switching Clocks by the Dynamic Switching
Frequency Selectors) specifies that we need to check CPG_PL2SDHI_DSEL for
SD clock switching status.

Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- initialized msk

 drivers/clk/renesas/rzg2l-cpg.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 9baae7bb7094..5343d04fd70d 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -188,7 +188,8 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	u32 off = GET_REG_OFFSET(hwdata->conf);
 	u32 shift = GET_SHIFT(hwdata->conf);
 	const u32 clk_src_266 = 2;
-	u32 bitmask;
+	u32 msk, val, bitmask;
+	int ret;
 
 	/*
 	 * As per the HW manual, we should not directly switch from 533 MHz to
@@ -202,14 +203,10 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	 * the index to value mapping is done by adding 1 to the index.
 	 */
 	bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16;
+	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
 	if (index != clk_src_266) {
-		u32 msk, val;
-		int ret;
-
 		writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off);
 
-		msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
-
 		ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
 					 !(val & msk), 100,
 					 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
@@ -221,7 +218,13 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 
 	writel(bitmask | ((index + 1) << shift), priv->base + off);
 
-	return 0;
+	ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
+				 !(val & msk), 100,
+				 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+	if (ret)
+		dev_err(priv->dev, "failed to switch clk source\n");
+
+	return ret;
 }
 
 static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
-- 
2.39.2


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[PATCH v2 03/28] clk: renesas: rzg2l: lock around writes to mux register

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

SD MUX output (SD0) is further divided by 4 in G2{L, UL}. The divided
clock is SD0_DIV4. SD0_DIV4 is registered with CLK_SET_RATE_PARENT which
means a rate request for it is propagated to the MUX and could reach
rzg2l_cpg_sd_clk_mux_set_parent() concurrently with the users of SD0.
Add proper locking to avoid concurrent access on SD MUX set rate
registers.

Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- adapted delay_us to 10us
- adapted CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US to 200us; tested
  with this adjustements on RZ/G3S and RZ/G2L SoCs

 drivers/clk/renesas/rzg2l-cpg.c | 23 +++++++++++++----------
 drivers/clk/renesas/rzg2l-cpg.h |  2 +-
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 5343d04fd70d..0679f2c7649e 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -189,6 +189,7 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	u32 shift = GET_SHIFT(hwdata->conf);
 	const u32 clk_src_266 = 2;
 	u32 msk, val, bitmask;
+	unsigned long flags;
 	int ret;
 
 	/*
@@ -204,23 +205,25 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	 */
 	bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16;
 	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
+	spin_lock_irqsave(&priv->rmw_lock, flags);
 	if (index != clk_src_266) {
 		writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off);
 
-		ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
-					 !(val & msk), 100,
-					 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
-		if (ret) {
-			dev_err(priv->dev, "failed to switch clk source\n");
-			return ret;
-		}
+		ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
+						!(val & msk), 10,
+						CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+		if (ret)
+			goto unlock;
 	}
 
 	writel(bitmask | ((index + 1) << shift), priv->base + off);
 
-	ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
-				 !(val & msk), 100,
-				 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+	ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
+					!(val & msk), 10,
+					CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+unlock:
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
 	if (ret)
 		dev_err(priv->dev, "failed to switch clk source\n");
 
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 0b28870a6f9d..097fd8f61680 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -43,7 +43,7 @@
 #define CPG_CLKSTATUS_SELSDHI0_STS	BIT(28)
 #define CPG_CLKSTATUS_SELSDHI1_STS	BIT(29)
 
-#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US	20000
+#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US	200
 
 /* n = 0/1/2 for PLL1/4/6 */
 #define CPG_SAMPLL_CLK1(n)	(0x04 + (16 * n))
-- 
2.39.2

[PATCH v2 03/28] clk: renesas: rzg2l: lock around writes to mux register

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

SD MUX output (SD0) is further divided by 4 in G2{L, UL}. The divided
clock is SD0_DIV4. SD0_DIV4 is registered with CLK_SET_RATE_PARENT which
means a rate request for it is propagated to the MUX and could reach
rzg2l_cpg_sd_clk_mux_set_parent() concurrently with the users of SD0.
Add proper locking to avoid concurrent access on SD MUX set rate
registers.

Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- adapted delay_us to 10us
- adapted CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US to 200us; tested
  with this adjustements on RZ/G3S and RZ/G2L SoCs

 drivers/clk/renesas/rzg2l-cpg.c | 23 +++++++++++++----------
 drivers/clk/renesas/rzg2l-cpg.h |  2 +-
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 5343d04fd70d..0679f2c7649e 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -189,6 +189,7 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	u32 shift = GET_SHIFT(hwdata->conf);
 	const u32 clk_src_266 = 2;
 	u32 msk, val, bitmask;
+	unsigned long flags;
 	int ret;
 
 	/*
@@ -204,23 +205,25 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	 */
 	bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16;
 	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
+	spin_lock_irqsave(&priv->rmw_lock, flags);
 	if (index != clk_src_266) {
 		writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off);
 
-		ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
-					 !(val & msk), 100,
-					 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
-		if (ret) {
-			dev_err(priv->dev, "failed to switch clk source\n");
-			return ret;
-		}
+		ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
+						!(val & msk), 10,
+						CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+		if (ret)
+			goto unlock;
 	}
 
 	writel(bitmask | ((index + 1) << shift), priv->base + off);
 
-	ret = readl_poll_timeout(priv->base + CPG_CLKSTATUS, val,
-				 !(val & msk), 100,
-				 CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+	ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
+					!(val & msk), 10,
+					CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
+unlock:
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
 	if (ret)
 		dev_err(priv->dev, "failed to switch clk source\n");
 
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 0b28870a6f9d..097fd8f61680 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -43,7 +43,7 @@
 #define CPG_CLKSTATUS_SELSDHI0_STS	BIT(28)
 #define CPG_CLKSTATUS_SELSDHI1_STS	BIT(29)
 
-#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US	20000
+#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US	200
 
 /* n = 0/1/2 for PLL1/4/6 */
 #define CPG_SAMPLL_CLK1(n)	(0x04 + (16 * n))
-- 
2.39.2


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[PATCH v2 04/28] clk: renesas: rzg2l: trust value returned by hardware

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Initial value of CPG_PL2SDHI_DSEL bits 0..1 or 4..6 is 01b. Hardware user's
manual (r01uh0914ej0130-rzg2l-rzg2lc.pdf) specifies that setting 0 is
prohibited. The rzg2l_cpg_sd_clk_mux_get_parent() should just read
CPG_PL2SDHI_DSEL, trust the value and return the proper clock parent index
based on the read value. Do this.

Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- Used "return val ? val - 1 : 0;"

 drivers/clk/renesas/rzg2l-cpg.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 0679f2c7649e..6f50f0329ecf 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -238,14 +238,8 @@ static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
 
 	val >>= GET_SHIFT(hwdata->conf);
 	val &= GENMASK(GET_WIDTH(hwdata->conf) - 1, 0);
-	if (val) {
-		val--;
-	} else {
-		/* Prohibited clk source, change it to 533 MHz(reset value) */
-		rzg2l_cpg_sd_clk_mux_set_parent(hw, 0);
-	}
 
-	return val;
+	return val ? val - 1 : 0;
 }
 
 static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
-- 
2.39.2

[PATCH v2 04/28] clk: renesas: rzg2l: trust value returned by hardware

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Initial value of CPG_PL2SDHI_DSEL bits 0..1 or 4..6 is 01b. Hardware user's
manual (r01uh0914ej0130-rzg2l-rzg2lc.pdf) specifies that setting 0 is
prohibited. The rzg2l_cpg_sd_clk_mux_get_parent() should just read
CPG_PL2SDHI_DSEL, trust the value and return the proper clock parent index
based on the read value. Do this.

Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- Used "return val ? val - 1 : 0;"

 drivers/clk/renesas/rzg2l-cpg.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 0679f2c7649e..6f50f0329ecf 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -238,14 +238,8 @@ static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
 
 	val >>= GET_SHIFT(hwdata->conf);
 	val &= GENMASK(GET_WIDTH(hwdata->conf) - 1, 0);
-	if (val) {
-		val--;
-	} else {
-		/* Prohibited clk source, change it to 533 MHz(reset value) */
-		rzg2l_cpg_sd_clk_mux_set_parent(hw, 0);
-	}
 
-	return val;
+	return val ? val - 1 : 0;
 }
 
 static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
-- 
2.39.2


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[PATCH v2 05/28] clk: renesas: rzg2l: fix computation formula

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

According to hardware manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf)
the computation formula for PLL rate is as follows:

Fout = ((m + k/65536) * Fin) / (p * 2^s)

and k has values in range [-32768, 32767]. Dividing k by 65536 with
integer variables leads all the time to zero. Thus we may have slight
differences b/w what has been set vs. what is displayed. Thus,
get rid of this and decompose the formula before dividing k by 65536.

Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- used mul_u64_u32_shr()

 drivers/clk/renesas/rzg2l-cpg.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 6f50f0329ecf..f411e428196c 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -695,18 +695,18 @@ static unsigned long rzg2l_cpg_pll_clk_recalc_rate(struct clk_hw *hw,
 	struct pll_clk *pll_clk = to_pll(hw);
 	struct rzg2l_cpg_priv *priv = pll_clk->priv;
 	unsigned int val1, val2;
-	unsigned int mult = 1;
-	unsigned int div = 1;
+	u64 rate;
 
 	if (pll_clk->type != CLK_TYPE_SAM_PLL)
 		return parent_rate;
 
 	val1 = readl(priv->base + GET_REG_SAMPLL_CLK1(pll_clk->conf));
 	val2 = readl(priv->base + GET_REG_SAMPLL_CLK2(pll_clk->conf));
-	mult = MDIV(val1) + KDIV(val1) / 65536;
-	div = PDIV(val1) << SDIV(val2);
 
-	return DIV_ROUND_CLOSEST_ULL((u64)parent_rate * mult, div);
+	rate = mul_u64_u32_shr(parent_rate, (MDIV(val1) << 16) + (s16)KDIV(val1),
+			       16 + SDIV(val2));
+
+	return DIV_ROUND_CLOSEST_ULL(rate, PDIV(val1));
 }
 
 static const struct clk_ops rzg2l_cpg_pll_ops = {
-- 
2.39.2

[PATCH v2 05/28] clk: renesas: rzg2l: fix computation formula

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

According to hardware manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf)
the computation formula for PLL rate is as follows:

Fout = ((m + k/65536) * Fin) / (p * 2^s)

and k has values in range [-32768, 32767]. Dividing k by 65536 with
integer variables leads all the time to zero. Thus we may have slight
differences b/w what has been set vs. what is displayed. Thus,
get rid of this and decompose the formula before dividing k by 65536.

Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- used mul_u64_u32_shr()

 drivers/clk/renesas/rzg2l-cpg.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 6f50f0329ecf..f411e428196c 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -695,18 +695,18 @@ static unsigned long rzg2l_cpg_pll_clk_recalc_rate(struct clk_hw *hw,
 	struct pll_clk *pll_clk = to_pll(hw);
 	struct rzg2l_cpg_priv *priv = pll_clk->priv;
 	unsigned int val1, val2;
-	unsigned int mult = 1;
-	unsigned int div = 1;
+	u64 rate;
 
 	if (pll_clk->type != CLK_TYPE_SAM_PLL)
 		return parent_rate;
 
 	val1 = readl(priv->base + GET_REG_SAMPLL_CLK1(pll_clk->conf));
 	val2 = readl(priv->base + GET_REG_SAMPLL_CLK2(pll_clk->conf));
-	mult = MDIV(val1) + KDIV(val1) / 65536;
-	div = PDIV(val1) << SDIV(val2);
 
-	return DIV_ROUND_CLOSEST_ULL((u64)parent_rate * mult, div);
+	rate = mul_u64_u32_shr(parent_rate, (MDIV(val1) << 16) + (s16)KDIV(val1),
+			       16 + SDIV(val2));
+
+	return DIV_ROUND_CLOSEST_ULL(rate, PDIV(val1));
 }
 
 static const struct clk_ops rzg2l_cpg_pll_ops = {
-- 
2.39.2


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[PATCH v2 06/28] clk: renesas: rzg2l: remove critical area

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

spinlock in rzg2l_mod_clock_endisable() is intended to protect the accesses
to hardware register. There is no need to protect the instructions that set
temporary variable which will be then written to register. With this only
one write to one clock register is executed thus locking/unlocking rmw_lock
is removed.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- removed also the spinlock
- s/reduce/remove in patch title

 drivers/clk/renesas/rzg2l-cpg.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index f411e428196c..d936832e098f 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -895,7 +895,6 @@ static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
 	struct rzg2l_cpg_priv *priv = clock->priv;
 	unsigned int reg = clock->off;
 	struct device *dev = priv->dev;
-	unsigned long flags;
 	u32 bitmask = BIT(clock->bit);
 	u32 value;
 	int error;
@@ -907,14 +906,12 @@ static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
 
 	dev_dbg(dev, "CLK_ON %u/%pC %s\n", CLK_ON_R(reg), hw->clk,
 		enable ? "ON" : "OFF");
-	spin_lock_irqsave(&priv->rmw_lock, flags);
 
 	value = bitmask << 16;
 	if (enable)
 		value |= bitmask;
-	writel(value, priv->base + CLK_ON_R(reg));
 
-	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+	writel(value, priv->base + CLK_ON_R(reg));
 
 	if (!enable)
 		return 0;
-- 
2.39.2

[PATCH v2 06/28] clk: renesas: rzg2l: remove critical area

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

spinlock in rzg2l_mod_clock_endisable() is intended to protect the accesses
to hardware register. There is no need to protect the instructions that set
temporary variable which will be then written to register. With this only
one write to one clock register is executed thus locking/unlocking rmw_lock
is removed.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- removed also the spinlock
- s/reduce/remove in patch title

 drivers/clk/renesas/rzg2l-cpg.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index f411e428196c..d936832e098f 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -895,7 +895,6 @@ static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
 	struct rzg2l_cpg_priv *priv = clock->priv;
 	unsigned int reg = clock->off;
 	struct device *dev = priv->dev;
-	unsigned long flags;
 	u32 bitmask = BIT(clock->bit);
 	u32 value;
 	int error;
@@ -907,14 +906,12 @@ static int rzg2l_mod_clock_endisable(struct clk_hw *hw, bool enable)
 
 	dev_dbg(dev, "CLK_ON %u/%pC %s\n", CLK_ON_R(reg), hw->clk,
 		enable ? "ON" : "OFF");
-	spin_lock_irqsave(&priv->rmw_lock, flags);
 
 	value = bitmask << 16;
 	if (enable)
 		value |= bitmask;
-	writel(value, priv->base + CLK_ON_R(reg));
 
-	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+	writel(value, priv->base + CLK_ON_R(reg));
 
 	if (!enable)
 		return 0;
-- 
2.39.2


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[PATCH v2 07/28] clk: renesas: rzg2l: add support for RZ/G3S PLL

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add support for reading the frequency of PLL1/4/6 available on RZ/G3S.
The computation formula for PLL frequency is as follows:
Fout = (nir + nfr / 4096) * Fin / (mr * pr)

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- added GENMASK() defines for DIV_P, DIV_M, DIV_NI, DIV_NF
- used mul_u64_u32_shr() as suggested by Geert on v1
- s/CLK_TYPE_G3S_SAM_PLL/CLK_TYPE_G3S_PLL/g

 drivers/clk/renesas/rzg2l-cpg.c | 49 ++++++++++++++++++++++++++++++---
 drivers/clk/renesas/rzg2l-cpg.h |  3 ++
 2 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index d936832e098f..02058a2d39ca 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -47,6 +47,11 @@
 #define PDIV(val)		FIELD_GET(GENMASK(5, 0), val)
 #define SDIV(val)		FIELD_GET(GENMASK(2, 0), val)
 
+#define RZG3S_DIV_P		GENMASK(28, 26)
+#define RZG3S_DIV_M		GENMASK(25, 22)
+#define RZG3S_DIV_NI		GENMASK(21, 13)
+#define RZG3S_DIV_NF		GENMASK(12, 1)
+
 #define CLK_ON_R(reg)		(reg)
 #define CLK_MON_R(reg)		(0x180 + (reg))
 #define CLK_RST_R(reg)		(reg)
@@ -713,11 +718,43 @@ static const struct clk_ops rzg2l_cpg_pll_ops = {
 	.recalc_rate = rzg2l_cpg_pll_clk_recalc_rate,
 };
 
+static unsigned long rzg3s_cpg_pll_clk_recalc_rate(struct clk_hw *hw,
+						   unsigned long parent_rate)
+{
+	struct pll_clk *pll_clk = to_pll(hw);
+	struct rzg2l_cpg_priv *priv = pll_clk->priv;
+	u32 nir, nfr, mr, pr, val;
+	u64 rate;
+
+	if (pll_clk->type != CLK_TYPE_G3S_PLL)
+		return parent_rate;
+
+	val = readl(priv->base + GET_REG_SAMPLL_CLK1(pll_clk->conf));
+
+	pr = 1 << FIELD_GET(RZG3S_DIV_P, val);
+	/* Hardware interprets values higher than 8 as p = 16. */
+	if (pr > 8)
+		pr = 16;
+
+	mr  = FIELD_GET(RZG3S_DIV_M, val) + 1;
+	nir = FIELD_GET(RZG3S_DIV_NI, val) + 1;
+	nfr = FIELD_GET(RZG3S_DIV_NF, val);
+
+	rate = mul_u64_u32_shr(parent_rate, 4096 * nir + nfr, 12);
+
+	return DIV_ROUND_CLOSEST_ULL(rate, (mr * pr));
+}
+
+static const struct clk_ops rzg3s_cpg_pll_ops = {
+	.recalc_rate = rzg3s_cpg_pll_clk_recalc_rate,
+};
+
 static struct clk * __init
 rzg2l_cpg_pll_clk_register(const struct cpg_core_clk *core,
 			   struct clk **clks,
 			   void __iomem *base,
-			   struct rzg2l_cpg_priv *priv)
+			   struct rzg2l_cpg_priv *priv,
+			   const struct clk_ops *ops)
 {
 	struct device *dev = priv->dev;
 	const struct clk *parent;
@@ -735,7 +772,7 @@ rzg2l_cpg_pll_clk_register(const struct cpg_core_clk *core,
 
 	parent_name = __clk_get_name(parent);
 	init.name = core->name;
-	init.ops = &rzg2l_cpg_pll_ops;
+	init.ops = ops;
 	init.flags = 0;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;
@@ -830,8 +867,12 @@ rzg2l_cpg_register_core_clk(const struct cpg_core_clk *core,
 						core->mult, div);
 		break;
 	case CLK_TYPE_SAM_PLL:
-		clk = rzg2l_cpg_pll_clk_register(core, priv->clks,
-						 priv->base, priv);
+		clk = rzg2l_cpg_pll_clk_register(core, priv->clks, priv->base, priv,
+						 &rzg2l_cpg_pll_ops);
+		break;
+	case CLK_TYPE_G3S_PLL:
+		clk = rzg2l_cpg_pll_clk_register(core, priv->clks, priv->base, priv,
+						 &rzg3s_cpg_pll_ops);
 		break;
 	case CLK_TYPE_SIPLL5:
 		clk = rzg2l_cpg_sipll5_register(core, priv->clks, priv);
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 097fd8f61680..20da0c620b90 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -102,6 +102,7 @@ enum clk_types {
 	CLK_TYPE_IN,		/* External Clock Input */
 	CLK_TYPE_FF,		/* Fixed Factor Clock */
 	CLK_TYPE_SAM_PLL,
+	CLK_TYPE_G3S_PLL,
 
 	/* Clock with divider */
 	CLK_TYPE_DIV,
@@ -129,6 +130,8 @@ enum clk_types {
 	DEF_TYPE(_name, _id, _type, .parent = _parent)
 #define DEF_SAMPLL(_name, _id, _parent, _conf) \
 	DEF_TYPE(_name, _id, CLK_TYPE_SAM_PLL, .parent = _parent, .conf = _conf)
+#define DEF_G3S_PLL(_name, _id, _parent, _conf) \
+	DEF_TYPE(_name, _id, CLK_TYPE_G3S_PLL, .parent = _parent, .conf = _conf)
 #define DEF_INPUT(_name, _id) \
 	DEF_TYPE(_name, _id, CLK_TYPE_IN)
 #define DEF_FIXED(_name, _id, _parent, _mult, _div) \
-- 
2.39.2

[PATCH v2 07/28] clk: renesas: rzg2l: add support for RZ/G3S PLL

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add support for reading the frequency of PLL1/4/6 available on RZ/G3S.
The computation formula for PLL frequency is as follows:
Fout = (nir + nfr / 4096) * Fin / (mr * pr)

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- added GENMASK() defines for DIV_P, DIV_M, DIV_NI, DIV_NF
- used mul_u64_u32_shr() as suggested by Geert on v1
- s/CLK_TYPE_G3S_SAM_PLL/CLK_TYPE_G3S_PLL/g

 drivers/clk/renesas/rzg2l-cpg.c | 49 ++++++++++++++++++++++++++++++---
 drivers/clk/renesas/rzg2l-cpg.h |  3 ++
 2 files changed, 48 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index d936832e098f..02058a2d39ca 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -47,6 +47,11 @@
 #define PDIV(val)		FIELD_GET(GENMASK(5, 0), val)
 #define SDIV(val)		FIELD_GET(GENMASK(2, 0), val)
 
+#define RZG3S_DIV_P		GENMASK(28, 26)
+#define RZG3S_DIV_M		GENMASK(25, 22)
+#define RZG3S_DIV_NI		GENMASK(21, 13)
+#define RZG3S_DIV_NF		GENMASK(12, 1)
+
 #define CLK_ON_R(reg)		(reg)
 #define CLK_MON_R(reg)		(0x180 + (reg))
 #define CLK_RST_R(reg)		(reg)
@@ -713,11 +718,43 @@ static const struct clk_ops rzg2l_cpg_pll_ops = {
 	.recalc_rate = rzg2l_cpg_pll_clk_recalc_rate,
 };
 
+static unsigned long rzg3s_cpg_pll_clk_recalc_rate(struct clk_hw *hw,
+						   unsigned long parent_rate)
+{
+	struct pll_clk *pll_clk = to_pll(hw);
+	struct rzg2l_cpg_priv *priv = pll_clk->priv;
+	u32 nir, nfr, mr, pr, val;
+	u64 rate;
+
+	if (pll_clk->type != CLK_TYPE_G3S_PLL)
+		return parent_rate;
+
+	val = readl(priv->base + GET_REG_SAMPLL_CLK1(pll_clk->conf));
+
+	pr = 1 << FIELD_GET(RZG3S_DIV_P, val);
+	/* Hardware interprets values higher than 8 as p = 16. */
+	if (pr > 8)
+		pr = 16;
+
+	mr  = FIELD_GET(RZG3S_DIV_M, val) + 1;
+	nir = FIELD_GET(RZG3S_DIV_NI, val) + 1;
+	nfr = FIELD_GET(RZG3S_DIV_NF, val);
+
+	rate = mul_u64_u32_shr(parent_rate, 4096 * nir + nfr, 12);
+
+	return DIV_ROUND_CLOSEST_ULL(rate, (mr * pr));
+}
+
+static const struct clk_ops rzg3s_cpg_pll_ops = {
+	.recalc_rate = rzg3s_cpg_pll_clk_recalc_rate,
+};
+
 static struct clk * __init
 rzg2l_cpg_pll_clk_register(const struct cpg_core_clk *core,
 			   struct clk **clks,
 			   void __iomem *base,
-			   struct rzg2l_cpg_priv *priv)
+			   struct rzg2l_cpg_priv *priv,
+			   const struct clk_ops *ops)
 {
 	struct device *dev = priv->dev;
 	const struct clk *parent;
@@ -735,7 +772,7 @@ rzg2l_cpg_pll_clk_register(const struct cpg_core_clk *core,
 
 	parent_name = __clk_get_name(parent);
 	init.name = core->name;
-	init.ops = &rzg2l_cpg_pll_ops;
+	init.ops = ops;
 	init.flags = 0;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;
@@ -830,8 +867,12 @@ rzg2l_cpg_register_core_clk(const struct cpg_core_clk *core,
 						core->mult, div);
 		break;
 	case CLK_TYPE_SAM_PLL:
-		clk = rzg2l_cpg_pll_clk_register(core, priv->clks,
-						 priv->base, priv);
+		clk = rzg2l_cpg_pll_clk_register(core, priv->clks, priv->base, priv,
+						 &rzg2l_cpg_pll_ops);
+		break;
+	case CLK_TYPE_G3S_PLL:
+		clk = rzg2l_cpg_pll_clk_register(core, priv->clks, priv->base, priv,
+						 &rzg3s_cpg_pll_ops);
 		break;
 	case CLK_TYPE_SIPLL5:
 		clk = rzg2l_cpg_sipll5_register(core, priv->clks, priv);
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 097fd8f61680..20da0c620b90 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -102,6 +102,7 @@ enum clk_types {
 	CLK_TYPE_IN,		/* External Clock Input */
 	CLK_TYPE_FF,		/* Fixed Factor Clock */
 	CLK_TYPE_SAM_PLL,
+	CLK_TYPE_G3S_PLL,
 
 	/* Clock with divider */
 	CLK_TYPE_DIV,
@@ -129,6 +130,8 @@ enum clk_types {
 	DEF_TYPE(_name, _id, _type, .parent = _parent)
 #define DEF_SAMPLL(_name, _id, _parent, _conf) \
 	DEF_TYPE(_name, _id, CLK_TYPE_SAM_PLL, .parent = _parent, .conf = _conf)
+#define DEF_G3S_PLL(_name, _id, _parent, _conf) \
+	DEF_TYPE(_name, _id, CLK_TYPE_G3S_PLL, .parent = _parent, .conf = _conf)
 #define DEF_INPUT(_name, _id) \
 	DEF_TYPE(_name, _id, CLK_TYPE_IN)
 #define DEF_FIXED(_name, _id, _parent, _mult, _div) \
-- 
2.39.2


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[PATCH v2 08/28] clk: renesas: rzg2l: add struct clk_hw_data

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add clk_hw_data struct that keeps the core part of a clock data. The
sd_hw_data embeds a member of type struct clk_hw_data along with other
members (in the next commits). This commit prepares the field for
refactoring the SD MUX clock driver.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 drivers/clk/renesas/rzg2l-cpg.c | 52 +++++++++++++++++++++------------
 1 file changed, 34 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 02058a2d39ca..ac05463d1d98 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -63,13 +63,29 @@
 
 #define MAX_VCLK_FREQ		(148500000)
 
-struct sd_hw_data {
+/**
+ * struct clk_hw_data - clock hardware data
+ * @hw: clock hw
+ * @conf: clock configuration (register offset, shift, width)
+ * @priv: CPG private data structure
+ */
+struct clk_hw_data {
 	struct clk_hw hw;
 	u32 conf;
 	struct rzg2l_cpg_priv *priv;
 };
 
-#define to_sd_hw_data(_hw)	container_of(_hw, struct sd_hw_data, hw)
+#define to_clk_hw_data(_hw)	container_of(_hw, struct clk_hw_data, hw)
+
+/**
+ * struct sd_hw_data - SD clock hardware data
+ * @hw_data: clock hw data
+ */
+struct sd_hw_data {
+	struct clk_hw_data hw_data;
+};
+
+#define to_sd_hw_data(_hw)	container_of(_hw, struct sd_hw_data, hw_data)
 
 struct rzg2l_pll5_param {
 	u32 pl5_fracin;
@@ -188,10 +204,10 @@ rzg2l_cpg_mux_clk_register(const struct cpg_core_clk *core,
 
 static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 {
-	struct sd_hw_data *hwdata = to_sd_hw_data(hw);
-	struct rzg2l_cpg_priv *priv = hwdata->priv;
-	u32 off = GET_REG_OFFSET(hwdata->conf);
-	u32 shift = GET_SHIFT(hwdata->conf);
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
 	const u32 clk_src_266 = 2;
 	u32 msk, val, bitmask;
 	unsigned long flags;
@@ -208,7 +224,7 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	 * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
 	 * the index to value mapping is done by adding 1 to the index.
 	 */
-	bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16;
+	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
 	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
 	spin_lock_irqsave(&priv->rmw_lock, flags);
 	if (index != clk_src_266) {
@@ -237,12 +253,12 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 
 static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
 {
-	struct sd_hw_data *hwdata = to_sd_hw_data(hw);
-	struct rzg2l_cpg_priv *priv = hwdata->priv;
-	u32 val = readl(priv->base + GET_REG_OFFSET(hwdata->conf));
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
 
-	val >>= GET_SHIFT(hwdata->conf);
-	val &= GENMASK(GET_WIDTH(hwdata->conf) - 1, 0);
+	val >>= GET_SHIFT(clk_hw_data->conf);
+	val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
 
 	return val ? val - 1 : 0;
 }
@@ -258,17 +274,17 @@ rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core,
 			      void __iomem *base,
 			      struct rzg2l_cpg_priv *priv)
 {
-	struct sd_hw_data *clk_hw_data;
+	struct sd_hw_data *sd_hw_data;
 	struct clk_init_data init;
 	struct clk_hw *clk_hw;
 	int ret;
 
-	clk_hw_data = devm_kzalloc(priv->dev, sizeof(*clk_hw_data), GFP_KERNEL);
-	if (!clk_hw_data)
+	sd_hw_data = devm_kzalloc(priv->dev, sizeof(*sd_hw_data), GFP_KERNEL);
+	if (!sd_hw_data)
 		return ERR_PTR(-ENOMEM);
 
-	clk_hw_data->priv = priv;
-	clk_hw_data->conf = core->conf;
+	sd_hw_data->hw_data.priv = priv;
+	sd_hw_data->hw_data.conf = core->conf;
 
 	init.name = core->name;
 	init.ops = &rzg2l_cpg_sd_clk_mux_ops;
@@ -276,7 +292,7 @@ rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core,
 	init.num_parents = core->num_parents;
 	init.parent_names = core->parent_names;
 
-	clk_hw = &clk_hw_data->hw;
+	clk_hw = &sd_hw_data->hw_data.hw;
 	clk_hw->init = &init;
 
 	ret = devm_clk_hw_register(priv->dev, clk_hw);
-- 
2.39.2

[PATCH v2 08/28] clk: renesas: rzg2l: add struct clk_hw_data

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add clk_hw_data struct that keeps the core part of a clock data. The
sd_hw_data embeds a member of type struct clk_hw_data along with other
members (in the next commits). This commit prepares the field for
refactoring the SD MUX clock driver.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 drivers/clk/renesas/rzg2l-cpg.c | 52 +++++++++++++++++++++------------
 1 file changed, 34 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 02058a2d39ca..ac05463d1d98 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -63,13 +63,29 @@
 
 #define MAX_VCLK_FREQ		(148500000)
 
-struct sd_hw_data {
+/**
+ * struct clk_hw_data - clock hardware data
+ * @hw: clock hw
+ * @conf: clock configuration (register offset, shift, width)
+ * @priv: CPG private data structure
+ */
+struct clk_hw_data {
 	struct clk_hw hw;
 	u32 conf;
 	struct rzg2l_cpg_priv *priv;
 };
 
-#define to_sd_hw_data(_hw)	container_of(_hw, struct sd_hw_data, hw)
+#define to_clk_hw_data(_hw)	container_of(_hw, struct clk_hw_data, hw)
+
+/**
+ * struct sd_hw_data - SD clock hardware data
+ * @hw_data: clock hw data
+ */
+struct sd_hw_data {
+	struct clk_hw_data hw_data;
+};
+
+#define to_sd_hw_data(_hw)	container_of(_hw, struct sd_hw_data, hw_data)
 
 struct rzg2l_pll5_param {
 	u32 pl5_fracin;
@@ -188,10 +204,10 @@ rzg2l_cpg_mux_clk_register(const struct cpg_core_clk *core,
 
 static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 {
-	struct sd_hw_data *hwdata = to_sd_hw_data(hw);
-	struct rzg2l_cpg_priv *priv = hwdata->priv;
-	u32 off = GET_REG_OFFSET(hwdata->conf);
-	u32 shift = GET_SHIFT(hwdata->conf);
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
 	const u32 clk_src_266 = 2;
 	u32 msk, val, bitmask;
 	unsigned long flags;
@@ -208,7 +224,7 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 	 * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
 	 * the index to value mapping is done by adding 1 to the index.
 	 */
-	bitmask = (GENMASK(GET_WIDTH(hwdata->conf) - 1, 0) << shift) << 16;
+	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
 	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
 	spin_lock_irqsave(&priv->rmw_lock, flags);
 	if (index != clk_src_266) {
@@ -237,12 +253,12 @@ static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
 
 static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
 {
-	struct sd_hw_data *hwdata = to_sd_hw_data(hw);
-	struct rzg2l_cpg_priv *priv = hwdata->priv;
-	u32 val = readl(priv->base + GET_REG_OFFSET(hwdata->conf));
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
 
-	val >>= GET_SHIFT(hwdata->conf);
-	val &= GENMASK(GET_WIDTH(hwdata->conf) - 1, 0);
+	val >>= GET_SHIFT(clk_hw_data->conf);
+	val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
 
 	return val ? val - 1 : 0;
 }
@@ -258,17 +274,17 @@ rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core,
 			      void __iomem *base,
 			      struct rzg2l_cpg_priv *priv)
 {
-	struct sd_hw_data *clk_hw_data;
+	struct sd_hw_data *sd_hw_data;
 	struct clk_init_data init;
 	struct clk_hw *clk_hw;
 	int ret;
 
-	clk_hw_data = devm_kzalloc(priv->dev, sizeof(*clk_hw_data), GFP_KERNEL);
-	if (!clk_hw_data)
+	sd_hw_data = devm_kzalloc(priv->dev, sizeof(*sd_hw_data), GFP_KERNEL);
+	if (!sd_hw_data)
 		return ERR_PTR(-ENOMEM);
 
-	clk_hw_data->priv = priv;
-	clk_hw_data->conf = core->conf;
+	sd_hw_data->hw_data.priv = priv;
+	sd_hw_data->hw_data.conf = core->conf;
 
 	init.name = core->name;
 	init.ops = &rzg2l_cpg_sd_clk_mux_ops;
@@ -276,7 +292,7 @@ rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core,
 	init.num_parents = core->num_parents;
 	init.parent_names = core->parent_names;
 
-	clk_hw = &clk_hw_data->hw;
+	clk_hw = &sd_hw_data->hw_data.hw;
 	clk_hw->init = &init;
 
 	ret = devm_clk_hw_register(priv->dev, clk_hw);
-- 
2.39.2


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[PATCH v2 09/28] clk: renesas: rzg2l: remove CPG_SDHI_DSEL from generic header

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Remove CPG_SDHI_DSEL and its bits from generic header as RZ/G3S has
different offset register and bits for this, thus avoid mixing them.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- s/form/from in commit description
- removed "G2UL_" prefix from macros' names
- collected tags

 drivers/clk/renesas/r9a07g043-cpg.c | 7 +++++++
 drivers/clk/renesas/r9a07g044-cpg.c | 7 +++++++
 drivers/clk/renesas/rzg2l-cpg.h     | 4 ----
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/r9a07g043-cpg.c b/drivers/clk/renesas/r9a07g043-cpg.c
index 1a7a6d60aca4..e0ae25644e1a 100644
--- a/drivers/clk/renesas/r9a07g043-cpg.c
+++ b/drivers/clk/renesas/r9a07g043-cpg.c
@@ -14,6 +14,13 @@
 
 #include "rzg2l-cpg.h"
 
+/* Specific registers. */
+#define CPG_PL2SDHI_DSEL	(0x218)
+
+/* Clock select configuration. */
+#define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
+#define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G043_CLK_P0_DIV2,
diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index c597414a94d8..d4dcf5d896d4 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -15,6 +15,13 @@
 
 #include "rzg2l-cpg.h"
 
+/* Specific registers. */
+#define CPG_PL2SDHI_DSEL	(0x218)
+
+/* Clock select configuration. */
+#define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
+#define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G054_CLK_DRP_A,
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 20da0c620b90..f5382333d327 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -19,7 +19,6 @@
 #define CPG_PL2_DDIV		(0x204)
 #define CPG_PL3A_DDIV		(0x208)
 #define CPG_PL6_DDIV		(0x210)
-#define CPG_PL2SDHI_DSEL	(0x218)
 #define CPG_CLKSTATUS		(0x280)
 #define CPG_PL3_SSEL		(0x408)
 #define CPG_PL6_SSEL		(0x414)
@@ -69,9 +68,6 @@
 #define SEL_PLL6_2	SEL_PLL_PACK(CPG_PL6_ETH_SSEL, 0, 1)
 #define SEL_GPU2	SEL_PLL_PACK(CPG_PL6_SSEL, 12, 1)
 
-#define SEL_SDHI0	DDIV_PACK(CPG_PL2SDHI_DSEL, 0, 2)
-#define SEL_SDHI1	DDIV_PACK(CPG_PL2SDHI_DSEL, 4, 2)
-
 #define EXTAL_FREQ_IN_MEGA_HZ	(24)
 
 /**
-- 
2.39.2

[PATCH v2 09/28] clk: renesas: rzg2l: remove CPG_SDHI_DSEL from generic header

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Remove CPG_SDHI_DSEL and its bits from generic header as RZ/G3S has
different offset register and bits for this, thus avoid mixing them.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- s/form/from in commit description
- removed "G2UL_" prefix from macros' names
- collected tags

 drivers/clk/renesas/r9a07g043-cpg.c | 7 +++++++
 drivers/clk/renesas/r9a07g044-cpg.c | 7 +++++++
 drivers/clk/renesas/rzg2l-cpg.h     | 4 ----
 3 files changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/renesas/r9a07g043-cpg.c b/drivers/clk/renesas/r9a07g043-cpg.c
index 1a7a6d60aca4..e0ae25644e1a 100644
--- a/drivers/clk/renesas/r9a07g043-cpg.c
+++ b/drivers/clk/renesas/r9a07g043-cpg.c
@@ -14,6 +14,13 @@
 
 #include "rzg2l-cpg.h"
 
+/* Specific registers. */
+#define CPG_PL2SDHI_DSEL	(0x218)
+
+/* Clock select configuration. */
+#define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
+#define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G043_CLK_P0_DIV2,
diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index c597414a94d8..d4dcf5d896d4 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -15,6 +15,13 @@
 
 #include "rzg2l-cpg.h"
 
+/* Specific registers. */
+#define CPG_PL2SDHI_DSEL	(0x218)
+
+/* Clock select configuration. */
+#define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
+#define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G054_CLK_DRP_A,
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 20da0c620b90..f5382333d327 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -19,7 +19,6 @@
 #define CPG_PL2_DDIV		(0x204)
 #define CPG_PL3A_DDIV		(0x208)
 #define CPG_PL6_DDIV		(0x210)
-#define CPG_PL2SDHI_DSEL	(0x218)
 #define CPG_CLKSTATUS		(0x280)
 #define CPG_PL3_SSEL		(0x408)
 #define CPG_PL6_SSEL		(0x414)
@@ -69,9 +68,6 @@
 #define SEL_PLL6_2	SEL_PLL_PACK(CPG_PL6_ETH_SSEL, 0, 1)
 #define SEL_GPU2	SEL_PLL_PACK(CPG_PL6_SSEL, 12, 1)
 
-#define SEL_SDHI0	DDIV_PACK(CPG_PL2SDHI_DSEL, 0, 2)
-#define SEL_SDHI1	DDIV_PACK(CPG_PL2SDHI_DSEL, 4, 2)
-
 #define EXTAL_FREQ_IN_MEGA_HZ	(24)
 
 /**
-- 
2.39.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v2 10/28] clk: renesas: rzg2l: refactor sd mux driver

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Refactor SD MUX driver to be able to reuse the same code on RZ/G3S.
RZ/G2{L, UL} has a limitation with regards to switching the clock source
for SD MUX (MUX clock source has to be switched to 266MHz before switching
b/w 533MHz and 400MHz). This limitation has been introduced as a clock
notifier that is registered on platform based initialization data thus the
SD MUX code could be reused on RZ/G3S.

As both RZ/G2{L, UL} and RZ/G3S has specific bits in specific registers
to check if the clock switching has been done, this configuration (register
offset, register bits and bits width) is now passed though
struct cpg_core_clk::sconf (status configuration) from platform specific
initialization code.

Along with struct cpg_core_clk::sconf the mux table indices are also
passed from platform specific initialization code.

Also, mux flags are now passed to DEF_SD_MUX() as they will be later
used by RZ/G3S.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- s/indexes/indices in commit description
- mentioned in commit description that mux flags can now be passed to
  driver though DEF_SD_MUX() macro
- removed SoC specific names from macros' names
- added spaces after { and before } when initializing arrays
- preserved the order of .[gs]set_parent() API definitions for simpler
  diff b/w versions
- removed SD_MUX_NOTIF macro

 drivers/clk/renesas/r9a07g043-cpg.c |  12 ++-
 drivers/clk/renesas/r9a07g044-cpg.c |  12 ++-
 drivers/clk/renesas/rzg2l-cpg.c     | 157 ++++++++++++++++++++--------
 drivers/clk/renesas/rzg2l-cpg.h     |  16 ++-
 4 files changed, 143 insertions(+), 54 deletions(-)

diff --git a/drivers/clk/renesas/r9a07g043-cpg.c b/drivers/clk/renesas/r9a07g043-cpg.c
index e0ae25644e1a..d831ac8eb4ce 100644
--- a/drivers/clk/renesas/r9a07g043-cpg.c
+++ b/drivers/clk/renesas/r9a07g043-cpg.c
@@ -21,6 +21,10 @@
 #define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
 #define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
 
+/* Clock status configuration. */
+#define SEL_SDHI0_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 28, 1)
+#define SEL_SDHI1_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 29, 1)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G043_CLK_P0_DIV2,
@@ -85,6 +89,8 @@ static const char * const sel_pll3_3[] = { ".pll3_533", ".pll3_400" };
 static const char * const sel_pll6_2[]	= { ".pll6_250", ".pll5_250" };
 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
 
+static const u32 mtable_sdhi[] = { 1, 2, 3 };
+
 static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
 	/* External Clock Inputs */
 	DEF_INPUT("extal", CLK_EXTAL),
@@ -130,8 +136,10 @@ static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
 	DEF_MUX("HP", R9A07G043_CLK_HP, SEL_PLL6_2, sel_pll6_2),
 	DEF_FIXED("SPI0", R9A07G043_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2),
 	DEF_FIXED("SPI1", R9A07G043_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4),
-	DEF_SD_MUX("SD0", R9A07G043_CLK_SD0, SEL_SDHI0, sel_shdi),
-	DEF_SD_MUX("SD1", R9A07G043_CLK_SD1, SEL_SDHI1, sel_shdi),
+	DEF_SD_MUX("SD0", R9A07G043_CLK_SD0, SEL_SDHI0, SEL_SDHI0_STS, sel_shdi,
+		   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
+	DEF_SD_MUX("SD1", R9A07G043_CLK_SD1, SEL_SDHI1, SEL_SDHI0_STS, sel_shdi,
+		   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
 	DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G043_CLK_SD0, 1, 4),
 	DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G043_CLK_SD1, 1, 4),
 };
diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index d4dcf5d896d4..a335f6eb1f80 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -22,6 +22,10 @@
 #define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
 #define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
 
+/* Clock status configuration. */
+#define SEL_SDHI0_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 28, 1)
+#define SEL_SDHI1_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 29, 1)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G054_CLK_DRP_A,
@@ -105,6 +109,8 @@ static const char * const sel_pll6_2[]	= { ".pll6_250", ".pll5_250" };
 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
 static const char * const sel_gpu2[] = { ".pll6", ".pll3_div2_2" };
 
+static const u32 mtable_sdhi[] = { 1, 2, 3 };
+
 static const struct {
 	struct cpg_core_clk common[56];
 #ifdef CONFIG_CLK_R9A07G054
@@ -170,8 +176,10 @@ static const struct {
 		DEF_MUX("HP", R9A07G044_CLK_HP, SEL_PLL6_2, sel_pll6_2),
 		DEF_FIXED("SPI0", R9A07G044_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2),
 		DEF_FIXED("SPI1", R9A07G044_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4),
-		DEF_SD_MUX("SD0", R9A07G044_CLK_SD0, SEL_SDHI0, sel_shdi),
-		DEF_SD_MUX("SD1", R9A07G044_CLK_SD1, SEL_SDHI1, sel_shdi),
+		DEF_SD_MUX("SD0", R9A07G044_CLK_SD0, SEL_SDHI0, SEL_SDHI0_STS, sel_shdi,
+			   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
+		DEF_SD_MUX("SD1", R9A07G044_CLK_SD1, SEL_SDHI1, SEL_SDHI0_STS, sel_shdi,
+			   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
 		DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G044_CLK_SD0, 1, 4),
 		DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G044_CLK_SD1, 1, 4),
 		DEF_DIV("G", R9A07G044_CLK_G, CLK_SEL_GPU2, DIVGPU, dtable_1_8),
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index ac05463d1d98..f4b70e07b9c6 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -67,25 +67,29 @@
  * struct clk_hw_data - clock hardware data
  * @hw: clock hw
  * @conf: clock configuration (register offset, shift, width)
+ * @sconf: clock status configuration (register offset, shift, width)
  * @priv: CPG private data structure
  */
 struct clk_hw_data {
 	struct clk_hw hw;
 	u32 conf;
+	u32 sconf;
 	struct rzg2l_cpg_priv *priv;
 };
 
 #define to_clk_hw_data(_hw)	container_of(_hw, struct clk_hw_data, hw)
 
 /**
- * struct sd_hw_data - SD clock hardware data
+ * struct sd_mux_hw_data - SD MUX clock hardware data
  * @hw_data: clock hw data
+ * @mtable: clock mux table
  */
-struct sd_hw_data {
+struct sd_mux_hw_data {
 	struct clk_hw_data hw_data;
+	const u32 *mtable;
 };
 
-#define to_sd_hw_data(_hw)	container_of(_hw, struct sd_hw_data, hw_data)
+#define to_sd_mux_hw_data(_hw)	container_of(_hw, struct sd_mux_hw_data, hw_data)
 
 struct rzg2l_pll5_param {
 	u32 pl5_fracin;
@@ -142,6 +146,77 @@ static void rzg2l_cpg_del_clk_provider(void *data)
 	of_clk_del_provider(data);
 }
 
+/* Must be called in atomic context. */
+static int rzg2l_cpg_wait_clk_update_done(void __iomem *base, u32 conf)
+{
+	u32 bitmask = GENMASK(GET_WIDTH(conf) - 1, 0) << GET_SHIFT(conf);
+	u32 off = GET_REG_OFFSET(conf);
+	u32 val;
+
+	return readl_poll_timeout_atomic(base + off, val, !(val & bitmask), 10, 200);
+}
+
+int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event,
+				  void *data)
+{
+	struct clk_notifier_data *cnd = data;
+	struct clk_hw *hw = __clk_get_hw(cnd->clk);
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
+	const u32 clk_src_266 = 3;
+	unsigned long flags;
+	u32 bitmask;
+	int ret;
+
+	if (event != PRE_RATE_CHANGE || (cnd->new_rate / MEGA == 266))
+		return 0;
+
+	spin_lock_irqsave(&priv->rmw_lock, flags);
+
+	/*
+	 * As per the HW manual, we should not directly switch from 533 MHz to
+	 * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
+	 * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
+	 * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
+	 * (400 MHz)).
+	 * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
+	 * switching register is prohibited.
+	 * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
+	 * the index to value mapping is done by adding 1 to the index.
+	 */
+	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
+	writel(bitmask | (clk_src_266 << shift), priv->base + off);
+
+	/* Wait for the update done. */
+	ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
+
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
+	if (ret)
+		dev_err(priv->dev, "failed to switch to safe clk source\n");
+
+	return ret;
+}
+
+static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
+				   struct rzg2l_cpg_priv *priv)
+{
+	struct notifier_block *nb;
+
+	if (!core->notifier)
+		return 0;
+
+	nb = devm_kzalloc(priv->dev, sizeof(*nb), GFP_KERNEL);
+	if (!nb)
+		return -ENOMEM;
+
+	nb->notifier_call = core->notifier;
+
+	return clk_notifier_register(hw->clk, nb);
+}
+
 static struct clk * __init
 rzg2l_cpg_div_clk_register(const struct cpg_core_clk *core,
 			   struct clk **clks,
@@ -202,71 +277,54 @@ rzg2l_cpg_mux_clk_register(const struct cpg_core_clk *core,
 	return clk_hw->clk;
 }
 
-static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
+static int rzg2l_cpg_sd_mux_clk_set_parent(struct clk_hw *hw, u8 index)
 {
 	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct sd_mux_hw_data *sd_mux_hw_data = to_sd_mux_hw_data(clk_hw_data);
 	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
 	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
 	u32 shift = GET_SHIFT(clk_hw_data->conf);
-	const u32 clk_src_266 = 2;
-	u32 msk, val, bitmask;
 	unsigned long flags;
+	u32 bitmask, val;
 	int ret;
 
-	/*
-	 * As per the HW manual, we should not directly switch from 533 MHz to
-	 * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
-	 * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
-	 * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
-	 * (400 MHz)).
-	 * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
-	 * switching register is prohibited.
-	 * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
-	 * the index to value mapping is done by adding 1 to the index.
-	 */
+	val = clk_mux_index_to_val(sd_mux_hw_data->mtable, CLK_MUX_ROUND_CLOSEST, index);
+
 	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
-	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
+
 	spin_lock_irqsave(&priv->rmw_lock, flags);
-	if (index != clk_src_266) {
-		writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off);
-
-		ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
-						!(val & msk), 10,
-						CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
-		if (ret)
-			goto unlock;
-	}
 
-	writel(bitmask | ((index + 1) << shift), priv->base + off);
+	writel(bitmask | (val << shift), priv->base + off);
+
+	/* Wait for the update done. */
+	ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
 
-	ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
-					!(val & msk), 10,
-					CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
-unlock:
 	spin_unlock_irqrestore(&priv->rmw_lock, flags);
 
 	if (ret)
-		dev_err(priv->dev, "failed to switch clk source\n");
+		dev_err(priv->dev, "Failed to switch parent\n");
 
 	return ret;
 }
 
-static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
+static u8 rzg2l_cpg_sd_mux_clk_get_parent(struct clk_hw *hw)
 {
 	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct sd_mux_hw_data *sd_mux_hw_data = to_sd_mux_hw_data(clk_hw_data);
 	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
-	u32 val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
+	u32 val;
 
+	val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
 	val >>= GET_SHIFT(clk_hw_data->conf);
 	val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
 
-	return val ? val - 1 : 0;
+	return clk_mux_val_to_index(hw, sd_mux_hw_data->mtable, CLK_MUX_ROUND_CLOSEST, val);
 }
 
 static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
 	.determine_rate = __clk_mux_determine_rate_closest,
-	.set_parent	= rzg2l_cpg_sd_clk_mux_set_parent,
-	.get_parent	= rzg2l_cpg_sd_clk_mux_get_parent,
+	.set_parent	= rzg2l_cpg_sd_mux_clk_set_parent,
+	.get_parent	= rzg2l_cpg_sd_mux_clk_get_parent,
 };
 
 static struct clk * __init
@@ -274,31 +332,40 @@ rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core,
 			      void __iomem *base,
 			      struct rzg2l_cpg_priv *priv)
 {
-	struct sd_hw_data *sd_hw_data;
+	struct sd_mux_hw_data *sd_mux_hw_data;
 	struct clk_init_data init;
 	struct clk_hw *clk_hw;
 	int ret;
 
-	sd_hw_data = devm_kzalloc(priv->dev, sizeof(*sd_hw_data), GFP_KERNEL);
-	if (!sd_hw_data)
+	sd_mux_hw_data = devm_kzalloc(priv->dev, sizeof(*sd_mux_hw_data), GFP_KERNEL);
+	if (!sd_mux_hw_data)
 		return ERR_PTR(-ENOMEM);
 
-	sd_hw_data->hw_data.priv = priv;
-	sd_hw_data->hw_data.conf = core->conf;
+	sd_mux_hw_data->hw_data.priv = priv;
+	sd_mux_hw_data->hw_data.conf = core->conf;
+	sd_mux_hw_data->hw_data.sconf = core->sconf;
+	sd_mux_hw_data->mtable = core->mtable;
 
 	init.name = core->name;
 	init.ops = &rzg2l_cpg_sd_clk_mux_ops;
-	init.flags = 0;
+	init.flags = core->flag;
 	init.num_parents = core->num_parents;
 	init.parent_names = core->parent_names;
 
-	clk_hw = &sd_hw_data->hw_data.hw;
+	clk_hw = &sd_mux_hw_data->hw_data.hw;
 	clk_hw->init = &init;
 
 	ret = devm_clk_hw_register(priv->dev, clk_hw);
 	if (ret)
 		return ERR_PTR(ret);
 
+	ret = rzg2l_register_notifier(clk_hw, core, priv);
+	if (ret) {
+		dev_err(priv->dev, "Failed to register notifier for %s\n",
+			core->name);
+		return ERR_PTR(ret);
+	}
+
 	return clk_hw->clk;
 }
 
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index f5382333d327..edac34037cf0 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -9,6 +9,8 @@
 #ifndef __RENESAS_RZG2L_CPG_H__
 #define __RENESAS_RZG2L_CPG_H__
 
+#include <linux/notifier.h>
+
 #define CPG_SIPLL5_STBY		(0x140)
 #define CPG_SIPLL5_CLK1		(0x144)
 #define CPG_SIPLL5_CLK3		(0x14C)
@@ -42,8 +44,6 @@
 #define CPG_CLKSTATUS_SELSDHI0_STS	BIT(28)
 #define CPG_CLKSTATUS_SELSDHI1_STS	BIT(29)
 
-#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US	200
-
 /* n = 0/1/2 for PLL1/4/6 */
 #define CPG_SAMPLL_CLK1(n)	(0x04 + (16 * n))
 #define CPG_SAMPLL_CLK2(n)	(0x08 + (16 * n))
@@ -86,8 +86,11 @@ struct cpg_core_clk {
 	unsigned int mult;
 	unsigned int type;
 	unsigned int conf;
+	unsigned int sconf;
 	const struct clk_div_table *dtable;
+	const u32 *mtable;
 	const char * const *parent_names;
+	notifier_fn_t notifier;
 	u32 flag;
 	u32 mux_flags;
 	int num_parents;
@@ -150,10 +153,11 @@ enum clk_types {
 		 .parent_names = _parent_names, \
 		 .num_parents = ARRAY_SIZE(_parent_names), \
 		 .mux_flags = CLK_MUX_READ_ONLY)
-#define DEF_SD_MUX(_name, _id, _conf, _parent_names) \
-	DEF_TYPE(_name, _id, CLK_TYPE_SD_MUX, .conf = _conf, \
+#define DEF_SD_MUX(_name, _id, _conf, _sconf, _parent_names, _mtable, _clk_flags, _notifier) \
+	DEF_TYPE(_name, _id, CLK_TYPE_SD_MUX, .conf = _conf, .sconf = _sconf, \
 		 .parent_names = _parent_names, \
-		 .num_parents = ARRAY_SIZE(_parent_names))
+		 .num_parents = ARRAY_SIZE(_parent_names), \
+		 .mtable = _mtable, .flag = _clk_flags, .notifier = _notifier)
 #define DEF_PLL5_FOUTPOSTDIV(_name, _id, _parent) \
 	DEF_TYPE(_name, _id, CLK_TYPE_SIPLL5, .parent = _parent)
 #define DEF_PLL5_4_MUX(_name, _id, _conf, _parent_names) \
@@ -272,4 +276,6 @@ extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
 extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
 extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
 
+int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
+
 #endif
-- 
2.39.2

[PATCH v2 10/28] clk: renesas: rzg2l: refactor sd mux driver

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Refactor SD MUX driver to be able to reuse the same code on RZ/G3S.
RZ/G2{L, UL} has a limitation with regards to switching the clock source
for SD MUX (MUX clock source has to be switched to 266MHz before switching
b/w 533MHz and 400MHz). This limitation has been introduced as a clock
notifier that is registered on platform based initialization data thus the
SD MUX code could be reused on RZ/G3S.

As both RZ/G2{L, UL} and RZ/G3S has specific bits in specific registers
to check if the clock switching has been done, this configuration (register
offset, register bits and bits width) is now passed though
struct cpg_core_clk::sconf (status configuration) from platform specific
initialization code.

Along with struct cpg_core_clk::sconf the mux table indices are also
passed from platform specific initialization code.

Also, mux flags are now passed to DEF_SD_MUX() as they will be later
used by RZ/G3S.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- s/indexes/indices in commit description
- mentioned in commit description that mux flags can now be passed to
  driver though DEF_SD_MUX() macro
- removed SoC specific names from macros' names
- added spaces after { and before } when initializing arrays
- preserved the order of .[gs]set_parent() API definitions for simpler
  diff b/w versions
- removed SD_MUX_NOTIF macro

 drivers/clk/renesas/r9a07g043-cpg.c |  12 ++-
 drivers/clk/renesas/r9a07g044-cpg.c |  12 ++-
 drivers/clk/renesas/rzg2l-cpg.c     | 157 ++++++++++++++++++++--------
 drivers/clk/renesas/rzg2l-cpg.h     |  16 ++-
 4 files changed, 143 insertions(+), 54 deletions(-)

diff --git a/drivers/clk/renesas/r9a07g043-cpg.c b/drivers/clk/renesas/r9a07g043-cpg.c
index e0ae25644e1a..d831ac8eb4ce 100644
--- a/drivers/clk/renesas/r9a07g043-cpg.c
+++ b/drivers/clk/renesas/r9a07g043-cpg.c
@@ -21,6 +21,10 @@
 #define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
 #define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
 
+/* Clock status configuration. */
+#define SEL_SDHI0_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 28, 1)
+#define SEL_SDHI1_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 29, 1)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G043_CLK_P0_DIV2,
@@ -85,6 +89,8 @@ static const char * const sel_pll3_3[] = { ".pll3_533", ".pll3_400" };
 static const char * const sel_pll6_2[]	= { ".pll6_250", ".pll5_250" };
 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
 
+static const u32 mtable_sdhi[] = { 1, 2, 3 };
+
 static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
 	/* External Clock Inputs */
 	DEF_INPUT("extal", CLK_EXTAL),
@@ -130,8 +136,10 @@ static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
 	DEF_MUX("HP", R9A07G043_CLK_HP, SEL_PLL6_2, sel_pll6_2),
 	DEF_FIXED("SPI0", R9A07G043_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2),
 	DEF_FIXED("SPI1", R9A07G043_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4),
-	DEF_SD_MUX("SD0", R9A07G043_CLK_SD0, SEL_SDHI0, sel_shdi),
-	DEF_SD_MUX("SD1", R9A07G043_CLK_SD1, SEL_SDHI1, sel_shdi),
+	DEF_SD_MUX("SD0", R9A07G043_CLK_SD0, SEL_SDHI0, SEL_SDHI0_STS, sel_shdi,
+		   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
+	DEF_SD_MUX("SD1", R9A07G043_CLK_SD1, SEL_SDHI1, SEL_SDHI0_STS, sel_shdi,
+		   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
 	DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G043_CLK_SD0, 1, 4),
 	DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G043_CLK_SD1, 1, 4),
 };
diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c
index d4dcf5d896d4..a335f6eb1f80 100644
--- a/drivers/clk/renesas/r9a07g044-cpg.c
+++ b/drivers/clk/renesas/r9a07g044-cpg.c
@@ -22,6 +22,10 @@
 #define SEL_SDHI0		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 0, 2)
 #define SEL_SDHI1		SEL_PLL_PACK(CPG_PL2SDHI_DSEL, 4, 2)
 
+/* Clock status configuration. */
+#define SEL_SDHI0_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 28, 1)
+#define SEL_SDHI1_STS		SEL_PLL_PACK(CPG_CLKSTATUS, 29, 1)
+
 enum clk_ids {
 	/* Core Clock Outputs exported to DT */
 	LAST_DT_CORE_CLK = R9A07G054_CLK_DRP_A,
@@ -105,6 +109,8 @@ static const char * const sel_pll6_2[]	= { ".pll6_250", ".pll5_250" };
 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
 static const char * const sel_gpu2[] = { ".pll6", ".pll3_div2_2" };
 
+static const u32 mtable_sdhi[] = { 1, 2, 3 };
+
 static const struct {
 	struct cpg_core_clk common[56];
 #ifdef CONFIG_CLK_R9A07G054
@@ -170,8 +176,10 @@ static const struct {
 		DEF_MUX("HP", R9A07G044_CLK_HP, SEL_PLL6_2, sel_pll6_2),
 		DEF_FIXED("SPI0", R9A07G044_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2),
 		DEF_FIXED("SPI1", R9A07G044_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4),
-		DEF_SD_MUX("SD0", R9A07G044_CLK_SD0, SEL_SDHI0, sel_shdi),
-		DEF_SD_MUX("SD1", R9A07G044_CLK_SD1, SEL_SDHI1, sel_shdi),
+		DEF_SD_MUX("SD0", R9A07G044_CLK_SD0, SEL_SDHI0, SEL_SDHI0_STS, sel_shdi,
+			   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
+		DEF_SD_MUX("SD1", R9A07G044_CLK_SD1, SEL_SDHI1, SEL_SDHI0_STS, sel_shdi,
+			   mtable_sdhi, 0, rzg2l_cpg_sd_mux_clk_notifier),
 		DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G044_CLK_SD0, 1, 4),
 		DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G044_CLK_SD1, 1, 4),
 		DEF_DIV("G", R9A07G044_CLK_G, CLK_SEL_GPU2, DIVGPU, dtable_1_8),
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index ac05463d1d98..f4b70e07b9c6 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -67,25 +67,29 @@
  * struct clk_hw_data - clock hardware data
  * @hw: clock hw
  * @conf: clock configuration (register offset, shift, width)
+ * @sconf: clock status configuration (register offset, shift, width)
  * @priv: CPG private data structure
  */
 struct clk_hw_data {
 	struct clk_hw hw;
 	u32 conf;
+	u32 sconf;
 	struct rzg2l_cpg_priv *priv;
 };
 
 #define to_clk_hw_data(_hw)	container_of(_hw, struct clk_hw_data, hw)
 
 /**
- * struct sd_hw_data - SD clock hardware data
+ * struct sd_mux_hw_data - SD MUX clock hardware data
  * @hw_data: clock hw data
+ * @mtable: clock mux table
  */
-struct sd_hw_data {
+struct sd_mux_hw_data {
 	struct clk_hw_data hw_data;
+	const u32 *mtable;
 };
 
-#define to_sd_hw_data(_hw)	container_of(_hw, struct sd_hw_data, hw_data)
+#define to_sd_mux_hw_data(_hw)	container_of(_hw, struct sd_mux_hw_data, hw_data)
 
 struct rzg2l_pll5_param {
 	u32 pl5_fracin;
@@ -142,6 +146,77 @@ static void rzg2l_cpg_del_clk_provider(void *data)
 	of_clk_del_provider(data);
 }
 
+/* Must be called in atomic context. */
+static int rzg2l_cpg_wait_clk_update_done(void __iomem *base, u32 conf)
+{
+	u32 bitmask = GENMASK(GET_WIDTH(conf) - 1, 0) << GET_SHIFT(conf);
+	u32 off = GET_REG_OFFSET(conf);
+	u32 val;
+
+	return readl_poll_timeout_atomic(base + off, val, !(val & bitmask), 10, 200);
+}
+
+int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event,
+				  void *data)
+{
+	struct clk_notifier_data *cnd = data;
+	struct clk_hw *hw = __clk_get_hw(cnd->clk);
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
+	const u32 clk_src_266 = 3;
+	unsigned long flags;
+	u32 bitmask;
+	int ret;
+
+	if (event != PRE_RATE_CHANGE || (cnd->new_rate / MEGA == 266))
+		return 0;
+
+	spin_lock_irqsave(&priv->rmw_lock, flags);
+
+	/*
+	 * As per the HW manual, we should not directly switch from 533 MHz to
+	 * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
+	 * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
+	 * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
+	 * (400 MHz)).
+	 * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
+	 * switching register is prohibited.
+	 * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
+	 * the index to value mapping is done by adding 1 to the index.
+	 */
+	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
+	writel(bitmask | (clk_src_266 << shift), priv->base + off);
+
+	/* Wait for the update done. */
+	ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
+
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
+	if (ret)
+		dev_err(priv->dev, "failed to switch to safe clk source\n");
+
+	return ret;
+}
+
+static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
+				   struct rzg2l_cpg_priv *priv)
+{
+	struct notifier_block *nb;
+
+	if (!core->notifier)
+		return 0;
+
+	nb = devm_kzalloc(priv->dev, sizeof(*nb), GFP_KERNEL);
+	if (!nb)
+		return -ENOMEM;
+
+	nb->notifier_call = core->notifier;
+
+	return clk_notifier_register(hw->clk, nb);
+}
+
 static struct clk * __init
 rzg2l_cpg_div_clk_register(const struct cpg_core_clk *core,
 			   struct clk **clks,
@@ -202,71 +277,54 @@ rzg2l_cpg_mux_clk_register(const struct cpg_core_clk *core,
 	return clk_hw->clk;
 }
 
-static int rzg2l_cpg_sd_clk_mux_set_parent(struct clk_hw *hw, u8 index)
+static int rzg2l_cpg_sd_mux_clk_set_parent(struct clk_hw *hw, u8 index)
 {
 	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct sd_mux_hw_data *sd_mux_hw_data = to_sd_mux_hw_data(clk_hw_data);
 	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
 	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
 	u32 shift = GET_SHIFT(clk_hw_data->conf);
-	const u32 clk_src_266 = 2;
-	u32 msk, val, bitmask;
 	unsigned long flags;
+	u32 bitmask, val;
 	int ret;
 
-	/*
-	 * As per the HW manual, we should not directly switch from 533 MHz to
-	 * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
-	 * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
-	 * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
-	 * (400 MHz)).
-	 * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
-	 * switching register is prohibited.
-	 * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
-	 * the index to value mapping is done by adding 1 to the index.
-	 */
+	val = clk_mux_index_to_val(sd_mux_hw_data->mtable, CLK_MUX_ROUND_CLOSEST, index);
+
 	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
-	msk = off ? CPG_CLKSTATUS_SELSDHI1_STS : CPG_CLKSTATUS_SELSDHI0_STS;
+
 	spin_lock_irqsave(&priv->rmw_lock, flags);
-	if (index != clk_src_266) {
-		writel(bitmask | ((clk_src_266 + 1) << shift), priv->base + off);
-
-		ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
-						!(val & msk), 10,
-						CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
-		if (ret)
-			goto unlock;
-	}
 
-	writel(bitmask | ((index + 1) << shift), priv->base + off);
+	writel(bitmask | (val << shift), priv->base + off);
+
+	/* Wait for the update done. */
+	ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
 
-	ret = readl_poll_timeout_atomic(priv->base + CPG_CLKSTATUS, val,
-					!(val & msk), 10,
-					CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US);
-unlock:
 	spin_unlock_irqrestore(&priv->rmw_lock, flags);
 
 	if (ret)
-		dev_err(priv->dev, "failed to switch clk source\n");
+		dev_err(priv->dev, "Failed to switch parent\n");
 
 	return ret;
 }
 
-static u8 rzg2l_cpg_sd_clk_mux_get_parent(struct clk_hw *hw)
+static u8 rzg2l_cpg_sd_mux_clk_get_parent(struct clk_hw *hw)
 {
 	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct sd_mux_hw_data *sd_mux_hw_data = to_sd_mux_hw_data(clk_hw_data);
 	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
-	u32 val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
+	u32 val;
 
+	val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
 	val >>= GET_SHIFT(clk_hw_data->conf);
 	val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
 
-	return val ? val - 1 : 0;
+	return clk_mux_val_to_index(hw, sd_mux_hw_data->mtable, CLK_MUX_ROUND_CLOSEST, val);
 }
 
 static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
 	.determine_rate = __clk_mux_determine_rate_closest,
-	.set_parent	= rzg2l_cpg_sd_clk_mux_set_parent,
-	.get_parent	= rzg2l_cpg_sd_clk_mux_get_parent,
+	.set_parent	= rzg2l_cpg_sd_mux_clk_set_parent,
+	.get_parent	= rzg2l_cpg_sd_mux_clk_get_parent,
 };
 
 static struct clk * __init
@@ -274,31 +332,40 @@ rzg2l_cpg_sd_mux_clk_register(const struct cpg_core_clk *core,
 			      void __iomem *base,
 			      struct rzg2l_cpg_priv *priv)
 {
-	struct sd_hw_data *sd_hw_data;
+	struct sd_mux_hw_data *sd_mux_hw_data;
 	struct clk_init_data init;
 	struct clk_hw *clk_hw;
 	int ret;
 
-	sd_hw_data = devm_kzalloc(priv->dev, sizeof(*sd_hw_data), GFP_KERNEL);
-	if (!sd_hw_data)
+	sd_mux_hw_data = devm_kzalloc(priv->dev, sizeof(*sd_mux_hw_data), GFP_KERNEL);
+	if (!sd_mux_hw_data)
 		return ERR_PTR(-ENOMEM);
 
-	sd_hw_data->hw_data.priv = priv;
-	sd_hw_data->hw_data.conf = core->conf;
+	sd_mux_hw_data->hw_data.priv = priv;
+	sd_mux_hw_data->hw_data.conf = core->conf;
+	sd_mux_hw_data->hw_data.sconf = core->sconf;
+	sd_mux_hw_data->mtable = core->mtable;
 
 	init.name = core->name;
 	init.ops = &rzg2l_cpg_sd_clk_mux_ops;
-	init.flags = 0;
+	init.flags = core->flag;
 	init.num_parents = core->num_parents;
 	init.parent_names = core->parent_names;
 
-	clk_hw = &sd_hw_data->hw_data.hw;
+	clk_hw = &sd_mux_hw_data->hw_data.hw;
 	clk_hw->init = &init;
 
 	ret = devm_clk_hw_register(priv->dev, clk_hw);
 	if (ret)
 		return ERR_PTR(ret);
 
+	ret = rzg2l_register_notifier(clk_hw, core, priv);
+	if (ret) {
+		dev_err(priv->dev, "Failed to register notifier for %s\n",
+			core->name);
+		return ERR_PTR(ret);
+	}
+
 	return clk_hw->clk;
 }
 
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index f5382333d327..edac34037cf0 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -9,6 +9,8 @@
 #ifndef __RENESAS_RZG2L_CPG_H__
 #define __RENESAS_RZG2L_CPG_H__
 
+#include <linux/notifier.h>
+
 #define CPG_SIPLL5_STBY		(0x140)
 #define CPG_SIPLL5_CLK1		(0x144)
 #define CPG_SIPLL5_CLK3		(0x14C)
@@ -42,8 +44,6 @@
 #define CPG_CLKSTATUS_SELSDHI0_STS	BIT(28)
 #define CPG_CLKSTATUS_SELSDHI1_STS	BIT(29)
 
-#define CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US	200
-
 /* n = 0/1/2 for PLL1/4/6 */
 #define CPG_SAMPLL_CLK1(n)	(0x04 + (16 * n))
 #define CPG_SAMPLL_CLK2(n)	(0x08 + (16 * n))
@@ -86,8 +86,11 @@ struct cpg_core_clk {
 	unsigned int mult;
 	unsigned int type;
 	unsigned int conf;
+	unsigned int sconf;
 	const struct clk_div_table *dtable;
+	const u32 *mtable;
 	const char * const *parent_names;
+	notifier_fn_t notifier;
 	u32 flag;
 	u32 mux_flags;
 	int num_parents;
@@ -150,10 +153,11 @@ enum clk_types {
 		 .parent_names = _parent_names, \
 		 .num_parents = ARRAY_SIZE(_parent_names), \
 		 .mux_flags = CLK_MUX_READ_ONLY)
-#define DEF_SD_MUX(_name, _id, _conf, _parent_names) \
-	DEF_TYPE(_name, _id, CLK_TYPE_SD_MUX, .conf = _conf, \
+#define DEF_SD_MUX(_name, _id, _conf, _sconf, _parent_names, _mtable, _clk_flags, _notifier) \
+	DEF_TYPE(_name, _id, CLK_TYPE_SD_MUX, .conf = _conf, .sconf = _sconf, \
 		 .parent_names = _parent_names, \
-		 .num_parents = ARRAY_SIZE(_parent_names))
+		 .num_parents = ARRAY_SIZE(_parent_names), \
+		 .mtable = _mtable, .flag = _clk_flags, .notifier = _notifier)
 #define DEF_PLL5_FOUTPOSTDIV(_name, _id, _parent) \
 	DEF_TYPE(_name, _id, CLK_TYPE_SIPLL5, .parent = _parent)
 #define DEF_PLL5_4_MUX(_name, _id, _conf, _parent_names) \
@@ -272,4 +276,6 @@ extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
 extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
 extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
 
+int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
+
 #endif
-- 
2.39.2


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[PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
The divider has some limitation for SDHI and OCTA clocks:
- SD div cannot be 1 if parent rate is 800MHz
- OCTA div cannot be 1 if parent rate is 400MHz
For these clocks a notifier could be registered from platform specific
clock driver and proper actions are taken before clock rate is changed,
if needed.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- removed DIV_NOTIF macro

 drivers/clk/renesas/rzg2l-cpg.c | 207 ++++++++++++++++++++++++++++++++
 drivers/clk/renesas/rzg2l-cpg.h |   9 ++
 2 files changed, 216 insertions(+)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index f4b70e07b9c6..3080e9391f71 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -91,6 +91,22 @@ struct sd_mux_hw_data {
 
 #define to_sd_mux_hw_data(_hw)	container_of(_hw, struct sd_mux_hw_data, hw_data)
 
+/**
+ * struct div_hw_data - divider clock hardware data
+ * @hw_data: clock hw data
+ * @dtable: pointer to divider table
+ * @invalid_rate: invalid rate for divider
+ * @width: divider width
+ */
+struct div_hw_data {
+	struct clk_hw_data hw_data;
+	const struct clk_div_table *dtable;
+	unsigned long invalid_rate;
+	u32 width;
+};
+
+#define to_div_hw_data(_hw)	container_of(_hw, struct div_hw_data, hw_data)
+
 struct rzg2l_pll5_param {
 	u32 pl5_fracin;
 	u8 pl5_refdiv;
@@ -200,6 +216,54 @@ int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event
 	return ret;
 }
 
+int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event,
+			       void *data)
+{
+	struct clk_notifier_data *cnd = data;
+	struct clk_hw *hw = __clk_get_hw(cnd->clk);
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
+	u32 bitmask = GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
+	unsigned long flags;
+	int ret = 0;
+	u32 val;
+
+	if (event != PRE_RATE_CHANGE || !div_hw_data->invalid_rate ||
+	    div_hw_data->invalid_rate % cnd->new_rate)
+		return 0;
+
+	spin_lock_irqsave(&priv->rmw_lock, flags);
+
+	val = readl(priv->base + off);
+	val >>= shift;
+	val &= bitmask;
+
+	/*
+	 * There are different constraints for the user of this notifiers as follows:
+	 * 1/ SD div cannot be 1 (val == 0) if parent rate is 800MHz
+	 * 2/ OCTA div cannot be 1 (val == 0) if parent rate is 400MHz
+	 * As SD can have only one parent having 800MHz and OCTA div can have
+	 * only one parent having 400MHz we took into account the parent rate
+	 * at the beginning of function (by checking invalid_rate % new_rate).
+	 * Now it is time to check the hardware divider and update it accordingly.
+	 */
+	if (!val) {
+		writel(((bitmask << shift) << 16) | BIT(shift), priv->base + off);
+		/* Wait for the update done. */
+		ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
+	}
+
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
+	if (ret)
+		dev_err(priv->dev, "Failed to downgrade the div\n");
+
+	return ret;
+}
+
 static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
 				   struct rzg2l_cpg_priv *priv)
 {
@@ -217,6 +281,146 @@ static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk
 	return clk_notifier_register(hw->clk, nb);
 }
 
+static unsigned long rzg3s_div_clk_recalc_rate(struct clk_hw *hw,
+					       unsigned long parent_rate)
+{
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 val;
+
+	val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
+	val >>= GET_SHIFT(clk_hw_data->conf);
+	val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
+
+	return divider_recalc_rate(hw, parent_rate, val, div_hw_data->dtable,
+				   CLK_DIVIDER_ROUND_CLOSEST, div_hw_data->width);
+}
+
+static bool rzg3s_div_clk_is_rate_valid(const unsigned long invalid_rate, unsigned long rate)
+{
+	if (invalid_rate && rate >= invalid_rate)
+		return false;
+
+	return true;
+}
+
+static long rzg3s_div_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long *parent_rate)
+{
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	long round_rate;
+
+	round_rate = divider_round_rate(hw, rate, parent_rate, div_hw_data->dtable,
+					div_hw_data->width, CLK_DIVIDER_ROUND_CLOSEST);
+
+	if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, round_rate))
+		return -EINVAL;
+
+	return round_rate;
+}
+
+static int rzg3s_div_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+				  unsigned long parent_rate)
+{
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
+	unsigned long flags;
+	u32 bitmask, val;
+	int ret;
+
+	/*
+	 * Some dividers cannot support some rates:
+	 * - SD div cannot support 800 MHz when parent is @800MHz and div = 1
+	 * - OCTA div cannot support 400 MHz when parent is @400MHz and div = 1
+	 * Check these scenarios.
+	 */
+	if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, rate))
+		return -EINVAL;
+
+	val = divider_get_val(rate, parent_rate, div_hw_data->dtable, div_hw_data->width,
+			      CLK_DIVIDER_ROUND_CLOSEST);
+
+	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
+
+	spin_lock_irqsave(&priv->rmw_lock, flags);
+	writel(bitmask | (val << shift), priv->base + off);
+	/* Wait for the update done. */
+	ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
+	return ret;
+}
+
+static const struct clk_ops rzg3s_div_clk_ops = {
+	.recalc_rate = rzg3s_div_clk_recalc_rate,
+	.round_rate = rzg3s_div_clk_round_rate,
+	.set_rate = rzg3s_div_clk_set_rate,
+};
+
+static struct clk * __init
+rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
+			   void __iomem *base, struct rzg2l_cpg_priv *priv)
+{
+	struct div_hw_data *div_hw_data;
+	struct clk_init_data init = {};
+	const struct clk_div_table *clkt;
+	struct clk_hw *clk_hw;
+	const struct clk *parent;
+	const char *parent_name;
+	u32 max;
+	int ret;
+
+	parent = clks[core->parent & 0xffff];
+	if (IS_ERR(parent))
+		return ERR_CAST(parent);
+
+	parent_name = __clk_get_name(parent);
+
+	div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
+	if (!div_hw_data)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = core->name;
+	init.flags = core->flag;
+	init.ops = &rzg3s_div_clk_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	/* Get the maximum divider to retrieve div width. */
+	for (clkt = core->dtable; clkt->div; clkt++) {
+		if (max < clkt->div)
+			max = clkt->div;
+	}
+
+	div_hw_data->hw_data.priv = priv;
+	div_hw_data->hw_data.conf = core->conf;
+	div_hw_data->hw_data.sconf = core->sconf;
+	div_hw_data->dtable = core->dtable;
+	div_hw_data->invalid_rate = core->invalid_rate;
+	div_hw_data->width = fls(max) - 1;
+
+	clk_hw = &div_hw_data->hw_data.hw;
+	clk_hw->init = &init;
+
+	ret = devm_clk_hw_register(priv->dev, clk_hw);
+	if (ret)
+		return ERR_PTR(ret);
+
+	ret = rzg2l_register_notifier(clk_hw, core, priv);
+	if (ret) {
+		dev_err(priv->dev, "Failed to register notifier for %s\n",
+			core->name);
+		return ERR_PTR(ret);
+	}
+
+	return clk_hw->clk;
+}
+
 static struct clk * __init
 rzg2l_cpg_div_clk_register(const struct cpg_core_clk *core,
 			   struct clk **clks,
@@ -964,6 +1168,9 @@ rzg2l_cpg_register_core_clk(const struct cpg_core_clk *core,
 		clk = rzg2l_cpg_div_clk_register(core, priv->clks,
 						 priv->base, priv);
 		break;
+	case CLK_TYPE_G3S_DIV:
+		clk = rzg3s_cpg_div_clk_register(core, priv->clks, priv->base, priv);
+		break;
 	case CLK_TYPE_MUX:
 		clk = rzg2l_cpg_mux_clk_register(core, priv->base, priv);
 		break;
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index edac34037cf0..8312972cc496 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -89,6 +89,7 @@ struct cpg_core_clk {
 	unsigned int sconf;
 	const struct clk_div_table *dtable;
 	const u32 *mtable;
+	const unsigned long invalid_rate;
 	const char * const *parent_names;
 	notifier_fn_t notifier;
 	u32 flag;
@@ -105,6 +106,7 @@ enum clk_types {
 
 	/* Clock with divider */
 	CLK_TYPE_DIV,
+	CLK_TYPE_G3S_DIV,
 
 	/* Clock with clock source selector */
 	CLK_TYPE_MUX,
@@ -143,6 +145,12 @@ enum clk_types {
 	DEF_TYPE(_name, _id, CLK_TYPE_DIV, .conf = _conf, \
 		 .parent = _parent, .dtable = _dtable, \
 		 .flag = CLK_DIVIDER_READ_ONLY)
+#define DEF_G3S_DIV(_name, _id, _parent, _conf, _sconf, _dtable, _invalid_rate, \
+		    _clk_flags, _notif) \
+	DEF_TYPE(_name, _id, CLK_TYPE_G3S_DIV, .conf = _conf, .sconf = _sconf, \
+		 .parent = _parent, .dtable = _dtable, \
+		 .invalid_rate = _invalid_rate, .flag = (_clk_flags), \
+		 .notifier = _notif)
 #define DEF_MUX(_name, _id, _conf, _parent_names) \
 	DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = _conf, \
 		 .parent_names = _parent_names, \
@@ -277,5 +285,6 @@ extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
 extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
 
 int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
+int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
 
 #endif
-- 
2.39.2

[PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
The divider has some limitation for SDHI and OCTA clocks:
- SD div cannot be 1 if parent rate is 800MHz
- OCTA div cannot be 1 if parent rate is 400MHz
For these clocks a notifier could be registered from platform specific
clock driver and proper actions are taken before clock rate is changed,
if needed.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- removed DIV_NOTIF macro

 drivers/clk/renesas/rzg2l-cpg.c | 207 ++++++++++++++++++++++++++++++++
 drivers/clk/renesas/rzg2l-cpg.h |   9 ++
 2 files changed, 216 insertions(+)

diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index f4b70e07b9c6..3080e9391f71 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -91,6 +91,22 @@ struct sd_mux_hw_data {
 
 #define to_sd_mux_hw_data(_hw)	container_of(_hw, struct sd_mux_hw_data, hw_data)
 
+/**
+ * struct div_hw_data - divider clock hardware data
+ * @hw_data: clock hw data
+ * @dtable: pointer to divider table
+ * @invalid_rate: invalid rate for divider
+ * @width: divider width
+ */
+struct div_hw_data {
+	struct clk_hw_data hw_data;
+	const struct clk_div_table *dtable;
+	unsigned long invalid_rate;
+	u32 width;
+};
+
+#define to_div_hw_data(_hw)	container_of(_hw, struct div_hw_data, hw_data)
+
 struct rzg2l_pll5_param {
 	u32 pl5_fracin;
 	u8 pl5_refdiv;
@@ -200,6 +216,54 @@ int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event
 	return ret;
 }
 
+int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event,
+			       void *data)
+{
+	struct clk_notifier_data *cnd = data;
+	struct clk_hw *hw = __clk_get_hw(cnd->clk);
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
+	u32 bitmask = GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
+	unsigned long flags;
+	int ret = 0;
+	u32 val;
+
+	if (event != PRE_RATE_CHANGE || !div_hw_data->invalid_rate ||
+	    div_hw_data->invalid_rate % cnd->new_rate)
+		return 0;
+
+	spin_lock_irqsave(&priv->rmw_lock, flags);
+
+	val = readl(priv->base + off);
+	val >>= shift;
+	val &= bitmask;
+
+	/*
+	 * There are different constraints for the user of this notifiers as follows:
+	 * 1/ SD div cannot be 1 (val == 0) if parent rate is 800MHz
+	 * 2/ OCTA div cannot be 1 (val == 0) if parent rate is 400MHz
+	 * As SD can have only one parent having 800MHz and OCTA div can have
+	 * only one parent having 400MHz we took into account the parent rate
+	 * at the beginning of function (by checking invalid_rate % new_rate).
+	 * Now it is time to check the hardware divider and update it accordingly.
+	 */
+	if (!val) {
+		writel(((bitmask << shift) << 16) | BIT(shift), priv->base + off);
+		/* Wait for the update done. */
+		ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
+	}
+
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
+	if (ret)
+		dev_err(priv->dev, "Failed to downgrade the div\n");
+
+	return ret;
+}
+
 static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
 				   struct rzg2l_cpg_priv *priv)
 {
@@ -217,6 +281,146 @@ static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk
 	return clk_notifier_register(hw->clk, nb);
 }
 
+static unsigned long rzg3s_div_clk_recalc_rate(struct clk_hw *hw,
+					       unsigned long parent_rate)
+{
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 val;
+
+	val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
+	val >>= GET_SHIFT(clk_hw_data->conf);
+	val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
+
+	return divider_recalc_rate(hw, parent_rate, val, div_hw_data->dtable,
+				   CLK_DIVIDER_ROUND_CLOSEST, div_hw_data->width);
+}
+
+static bool rzg3s_div_clk_is_rate_valid(const unsigned long invalid_rate, unsigned long rate)
+{
+	if (invalid_rate && rate >= invalid_rate)
+		return false;
+
+	return true;
+}
+
+static long rzg3s_div_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+				     unsigned long *parent_rate)
+{
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	long round_rate;
+
+	round_rate = divider_round_rate(hw, rate, parent_rate, div_hw_data->dtable,
+					div_hw_data->width, CLK_DIVIDER_ROUND_CLOSEST);
+
+	if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, round_rate))
+		return -EINVAL;
+
+	return round_rate;
+}
+
+static int rzg3s_div_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+				  unsigned long parent_rate)
+{
+	struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
+	struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
+	struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
+	u32 off = GET_REG_OFFSET(clk_hw_data->conf);
+	u32 shift = GET_SHIFT(clk_hw_data->conf);
+	unsigned long flags;
+	u32 bitmask, val;
+	int ret;
+
+	/*
+	 * Some dividers cannot support some rates:
+	 * - SD div cannot support 800 MHz when parent is @800MHz and div = 1
+	 * - OCTA div cannot support 400 MHz when parent is @400MHz and div = 1
+	 * Check these scenarios.
+	 */
+	if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, rate))
+		return -EINVAL;
+
+	val = divider_get_val(rate, parent_rate, div_hw_data->dtable, div_hw_data->width,
+			      CLK_DIVIDER_ROUND_CLOSEST);
+
+	bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
+
+	spin_lock_irqsave(&priv->rmw_lock, flags);
+	writel(bitmask | (val << shift), priv->base + off);
+	/* Wait for the update done. */
+	ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
+	spin_unlock_irqrestore(&priv->rmw_lock, flags);
+
+	return ret;
+}
+
+static const struct clk_ops rzg3s_div_clk_ops = {
+	.recalc_rate = rzg3s_div_clk_recalc_rate,
+	.round_rate = rzg3s_div_clk_round_rate,
+	.set_rate = rzg3s_div_clk_set_rate,
+};
+
+static struct clk * __init
+rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
+			   void __iomem *base, struct rzg2l_cpg_priv *priv)
+{
+	struct div_hw_data *div_hw_data;
+	struct clk_init_data init = {};
+	const struct clk_div_table *clkt;
+	struct clk_hw *clk_hw;
+	const struct clk *parent;
+	const char *parent_name;
+	u32 max;
+	int ret;
+
+	parent = clks[core->parent & 0xffff];
+	if (IS_ERR(parent))
+		return ERR_CAST(parent);
+
+	parent_name = __clk_get_name(parent);
+
+	div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
+	if (!div_hw_data)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = core->name;
+	init.flags = core->flag;
+	init.ops = &rzg3s_div_clk_ops;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	/* Get the maximum divider to retrieve div width. */
+	for (clkt = core->dtable; clkt->div; clkt++) {
+		if (max < clkt->div)
+			max = clkt->div;
+	}
+
+	div_hw_data->hw_data.priv = priv;
+	div_hw_data->hw_data.conf = core->conf;
+	div_hw_data->hw_data.sconf = core->sconf;
+	div_hw_data->dtable = core->dtable;
+	div_hw_data->invalid_rate = core->invalid_rate;
+	div_hw_data->width = fls(max) - 1;
+
+	clk_hw = &div_hw_data->hw_data.hw;
+	clk_hw->init = &init;
+
+	ret = devm_clk_hw_register(priv->dev, clk_hw);
+	if (ret)
+		return ERR_PTR(ret);
+
+	ret = rzg2l_register_notifier(clk_hw, core, priv);
+	if (ret) {
+		dev_err(priv->dev, "Failed to register notifier for %s\n",
+			core->name);
+		return ERR_PTR(ret);
+	}
+
+	return clk_hw->clk;
+}
+
 static struct clk * __init
 rzg2l_cpg_div_clk_register(const struct cpg_core_clk *core,
 			   struct clk **clks,
@@ -964,6 +1168,9 @@ rzg2l_cpg_register_core_clk(const struct cpg_core_clk *core,
 		clk = rzg2l_cpg_div_clk_register(core, priv->clks,
 						 priv->base, priv);
 		break;
+	case CLK_TYPE_G3S_DIV:
+		clk = rzg3s_cpg_div_clk_register(core, priv->clks, priv->base, priv);
+		break;
 	case CLK_TYPE_MUX:
 		clk = rzg2l_cpg_mux_clk_register(core, priv->base, priv);
 		break;
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index edac34037cf0..8312972cc496 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -89,6 +89,7 @@ struct cpg_core_clk {
 	unsigned int sconf;
 	const struct clk_div_table *dtable;
 	const u32 *mtable;
+	const unsigned long invalid_rate;
 	const char * const *parent_names;
 	notifier_fn_t notifier;
 	u32 flag;
@@ -105,6 +106,7 @@ enum clk_types {
 
 	/* Clock with divider */
 	CLK_TYPE_DIV,
+	CLK_TYPE_G3S_DIV,
 
 	/* Clock with clock source selector */
 	CLK_TYPE_MUX,
@@ -143,6 +145,12 @@ enum clk_types {
 	DEF_TYPE(_name, _id, CLK_TYPE_DIV, .conf = _conf, \
 		 .parent = _parent, .dtable = _dtable, \
 		 .flag = CLK_DIVIDER_READ_ONLY)
+#define DEF_G3S_DIV(_name, _id, _parent, _conf, _sconf, _dtable, _invalid_rate, \
+		    _clk_flags, _notif) \
+	DEF_TYPE(_name, _id, CLK_TYPE_G3S_DIV, .conf = _conf, .sconf = _sconf, \
+		 .parent = _parent, .dtable = _dtable, \
+		 .invalid_rate = _invalid_rate, .flag = (_clk_flags), \
+		 .notifier = _notif)
 #define DEF_MUX(_name, _id, _conf, _parent_names) \
 	DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = _conf, \
 		 .parent_names = _parent_names, \
@@ -277,5 +285,6 @@ extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
 extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
 
 int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
+int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
 
 #endif
-- 
2.39.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v2 12/28] dt-bindings: clock: renesas,rzg2l-cpg: document RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add documentation for RZ/G3S CPG. RZ/G3S CPG module is almost identical
with the one available in RZ/G2{L, UL} the exception being some core
clocks as follows:
- SD clock is composed by a mux and a divider and the divider
  has some limitation (div = 1 cannot be set if mux rate is 800MHz).
- there are 3 SD clocks
- OCTA and TSU clocks are specific to RZ/G3S
- PLL1/4/6 are specific to RZ/G3S with its own computation formula
Even with this RZ/G3S could use the same bindings as RZ/G2L.

Along with documentation bindings for the RZ/G3S (R9A08G045) Clock Pulse
Generator (CPG) core clocks, module clocks and resets were added.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
---

Changes in v2:
- collected Rob's tag
- squashed with
  [PATCH 21/37] dt-bindings: clock: add r9a08g045 CPG clocks and resets
  from v1
- updated commit message to reflect that bindings were also added to
  this patch
- removed R9A08G045_USB_SCLK
- @Geert: please note I haven't collected your Rb tag as I did the squash

 .../bindings/clock/renesas,rzg2l-cpg.yaml     |   1 +
 include/dt-bindings/clock/r9a08g045-cpg.h     | 242 ++++++++++++++++++
 2 files changed, 243 insertions(+)
 create mode 100644 include/dt-bindings/clock/r9a08g045-cpg.h

diff --git a/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml b/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml
index fe2fba18ae84..80a8c7114c31 100644
--- a/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml
+++ b/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml
@@ -27,6 +27,7 @@ properties:
       - renesas,r9a07g043-cpg # RZ/G2UL{Type-1,Type-2} and RZ/Five
       - renesas,r9a07g044-cpg # RZ/G2{L,LC}
       - renesas,r9a07g054-cpg # RZ/V2L
+      - renesas,r9a08g045-cpg # RZ/G3S
       - renesas,r9a09g011-cpg # RZ/V2M
 
   reg:
diff --git a/include/dt-bindings/clock/r9a08g045-cpg.h b/include/dt-bindings/clock/r9a08g045-cpg.h
new file mode 100644
index 000000000000..410725b778a8
--- /dev/null
+++ b/include/dt-bindings/clock/r9a08g045-cpg.h
@@ -0,0 +1,242 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_CLOCK_R9A08G045_CPG_H__
+#define __DT_BINDINGS_CLOCK_R9A08G045_CPG_H__
+
+#include <dt-bindings/clock/renesas-cpg-mssr.h>
+
+/* R9A08G045 CPG Core Clocks */
+#define R9A08G045_CLK_I			0
+#define R9A08G045_CLK_I2		1
+#define R9A08G045_CLK_I3		2
+#define R9A08G045_CLK_S0		3
+#define R9A08G045_CLK_SPI0		4
+#define R9A08G045_CLK_SPI1		5
+#define R9A08G045_CLK_SD0		6
+#define R9A08G045_CLK_SD1		7
+#define R9A08G045_CLK_SD2		8
+#define R9A08G045_CLK_M0		9
+#define R9A08G045_CLK_HP		10
+#define R9A08G045_CLK_TSU		11
+#define R9A08G045_CLK_ZT		12
+#define R9A08G045_CLK_P0		13
+#define R9A08G045_CLK_P1		14
+#define R9A08G045_CLK_P2		15
+#define R9A08G045_CLK_P3		16
+#define R9A08G045_CLK_P4		17
+#define R9A08G045_CLK_P5		18
+#define R9A08G045_CLK_AT		19
+#define R9A08G045_CLK_OC0		20
+#define R9A08G045_CLK_OC1		21
+#define R9A08G045_OSCCLK		22
+#define R9A08G045_OSCCLK2		23
+#define R9A08G045_SWD			24
+
+/* R9A08G045 Module Clocks */
+#define R9A08G045_OCTA_ACLK		0
+#define R9A08G045_OCTA_MCLK		1
+#define R9A08G045_CA55_SCLK		2
+#define R9A08G045_CA55_PCLK		3
+#define R9A08G045_CA55_ATCLK		4
+#define R9A08G045_CA55_GICCLK		5
+#define R9A08G045_CA55_PERICLK		6
+#define R9A08G045_CA55_ACLK		7
+#define R9A08G045_CA55_TSCLK		8
+#define R9A08G045_SRAM_ACPU_ACLK0	9
+#define R9A08G045_SRAM_ACPU_ACLK1	10
+#define R9A08G045_SRAM_ACPU_ACLK2	11
+#define R9A08G045_GIC600_GICCLK		12
+#define R9A08G045_IA55_CLK		13
+#define R9A08G045_IA55_PCLK		14
+#define R9A08G045_MHU_PCLK		15
+#define R9A08G045_SYC_CNT_CLK		16
+#define R9A08G045_DMAC_ACLK		17
+#define R9A08G045_DMAC_PCLK		18
+#define R9A08G045_OSTM0_PCLK		19
+#define R9A08G045_OSTM1_PCLK		20
+#define R9A08G045_OSTM2_PCLK		21
+#define R9A08G045_OSTM3_PCLK		22
+#define R9A08G045_OSTM4_PCLK		23
+#define R9A08G045_OSTM5_PCLK		24
+#define R9A08G045_OSTM6_PCLK		25
+#define R9A08G045_OSTM7_PCLK		26
+#define R9A08G045_MTU_X_MCK_MTU3	27
+#define R9A08G045_POE3_CLKM_POE		28
+#define R9A08G045_GPT_PCLK		29
+#define R9A08G045_POEG_A_CLKP		30
+#define R9A08G045_POEG_B_CLKP		31
+#define R9A08G045_POEG_C_CLKP		32
+#define R9A08G045_POEG_D_CLKP		33
+#define R9A08G045_WDT0_PCLK		34
+#define R9A08G045_WDT0_CLK		35
+#define R9A08G045_WDT1_PCLK		36
+#define R9A08G045_WDT1_CLK		37
+#define R9A08G045_WDT2_PCLK		38
+#define R9A08G045_WDT2_CLK		39
+#define R9A08G045_SPI_HCLK		40
+#define R9A08G045_SPI_ACLK		41
+#define R9A08G045_SPI_CLK		42
+#define R9A08G045_SPI_CLKX2		43
+#define R9A08G045_SDHI0_IMCLK		44
+#define R9A08G045_SDHI0_IMCLK2		45
+#define R9A08G045_SDHI0_CLK_HS		46
+#define R9A08G045_SDHI0_ACLK		47
+#define R9A08G045_SDHI1_IMCLK		48
+#define R9A08G045_SDHI1_IMCLK2		49
+#define R9A08G045_SDHI1_CLK_HS		50
+#define R9A08G045_SDHI1_ACLK		51
+#define R9A08G045_SDHI2_IMCLK		52
+#define R9A08G045_SDHI2_IMCLK2		53
+#define R9A08G045_SDHI2_CLK_HS		54
+#define R9A08G045_SDHI2_ACLK		55
+#define R9A08G045_SSI0_PCLK2		56
+#define R9A08G045_SSI0_PCLK_SFR		57
+#define R9A08G045_SSI1_PCLK2		58
+#define R9A08G045_SSI1_PCLK_SFR		59
+#define R9A08G045_SSI2_PCLK2		60
+#define R9A08G045_SSI2_PCLK_SFR		61
+#define R9A08G045_SSI3_PCLK2		62
+#define R9A08G045_SSI3_PCLK_SFR		63
+#define R9A08G045_SRC_CLKP		64
+#define R9A08G045_USB_U2H0_HCLK		65
+#define R9A08G045_USB_U2H1_HCLK		66
+#define R9A08G045_USB_U2P_EXR_CPUCLK	67
+#define R9A08G045_USB_PCLK		68
+#define R9A08G045_ETH0_CLK_AXI		69
+#define R9A08G045_ETH0_CLK_CHI		70
+#define R9A08G045_ETH0_REFCLK		71
+#define R9A08G045_ETH1_CLK_AXI		72
+#define R9A08G045_ETH1_CLK_CHI		73
+#define R9A08G045_ETH1_REFCLK		74
+#define R9A08G045_I2C0_PCLK		75
+#define R9A08G045_I2C1_PCLK		76
+#define R9A08G045_I2C2_PCLK		77
+#define R9A08G045_I2C3_PCLK		78
+#define R9A08G045_SCIF0_CLK_PCK		79
+#define R9A08G045_SCIF1_CLK_PCK		80
+#define R9A08G045_SCIF2_CLK_PCK		81
+#define R9A08G045_SCIF3_CLK_PCK		82
+#define R9A08G045_SCIF4_CLK_PCK		83
+#define R9A08G045_SCIF5_CLK_PCK		84
+#define R9A08G045_SCI0_CLKP		85
+#define R9A08G045_SCI1_CLKP		86
+#define R9A08G045_IRDA_CLKP		87
+#define R9A08G045_RSPI0_CLKB		88
+#define R9A08G045_RSPI1_CLKB		89
+#define R9A08G045_RSPI2_CLKB		90
+#define R9A08G045_RSPI3_CLKB		91
+#define R9A08G045_RSPI4_CLKB		92
+#define R9A08G045_CANFD_PCLK		93
+#define R9A08G045_CANFD_CLK_RAM		94
+#define R9A08G045_GPIO_HCLK		95
+#define R9A08G045_ADC_ADCLK		96
+#define R9A08G045_ADC_PCLK		97
+#define R9A08G045_TSU_PCLK		98
+#define R9A08G045_PDM_PCLK		99
+#define R9A08G045_PDM_CCLK		100
+#define R9A08G045_PCI_ACLK		101
+#define R9A08G045_PCI_CLKL1PM		102
+#define R9A08G045_SPDIF_PCLK		103
+#define R9A08G045_I3C_PCLK		104
+#define R9A08G045_I3C_TCLK		105
+#define R9A08G045_VBAT_BCLK		106
+
+/* R9A08G045 Resets */
+#define R9A08G045_CA55_RST_1_0		0
+#define R9A08G045_CA55_RST_3_0		1
+#define R9A08G045_CA55_RST_4		2
+#define R9A08G045_CA55_RST_5		3
+#define R9A08G045_CA55_RST_6		4
+#define R9A08G045_CA55_RST_7		5
+#define R9A08G045_CA55_RST_8		6
+#define R9A08G045_CA55_RST_9		7
+#define R9A08G045_CA55_RST_10		8
+#define R9A08G045_CA55_RST_11		9
+#define R9A08G045_CA55_RST_12		10
+#define R9A08G045_SRAM_ACPU_ARESETN0	11
+#define R9A08G045_SRAM_ACPU_ARESETN1	12
+#define R9A08G045_SRAM_ACPU_ARESETN2	13
+#define R9A08G045_GIC600_GICRESET_N	14
+#define R9A08G045_GIC600_DBG_GICRESET_N	15
+#define R9A08G045_IA55_RESETN		16
+#define R9A08G045_MHU_RESETN		17
+#define R9A08G045_DMAC_ARESETN		18
+#define R9A08G045_DMAC_RST_ASYNC	19
+#define R9A08G045_SYC_RESETN		20
+#define R9A08G045_OSTM0_PRESETZ		21
+#define R9A08G045_OSTM1_PRESETZ		22
+#define R9A08G045_OSTM2_PRESETZ		23
+#define R9A08G045_OSTM3_PRESETZ		24
+#define R9A08G045_OSTM4_PRESETZ		25
+#define R9A08G045_OSTM5_PRESETZ		26
+#define R9A08G045_OSTM6_PRESETZ		27
+#define R9A08G045_OSTM7_PRESETZ		28
+#define R9A08G045_MTU_X_PRESET_MTU3	29
+#define R9A08G045_POE3_RST_M_REG	30
+#define R9A08G045_GPT_RST_C		31
+#define R9A08G045_POEG_A_RST		32
+#define R9A08G045_POEG_B_RST		33
+#define R9A08G045_POEG_C_RST		34
+#define R9A08G045_POEG_D_RST		35
+#define R9A08G045_WDT0_PRESETN		36
+#define R9A08G045_WDT1_PRESETN		37
+#define R9A08G045_WDT2_PRESETN		38
+#define R9A08G045_SPI_HRESETN		39
+#define R9A08G045_SPI_ARESETN		40
+#define R9A08G045_SDHI0_IXRST		41
+#define R9A08G045_SDHI1_IXRST		42
+#define R9A08G045_SDHI2_IXRST		43
+#define R9A08G045_SSI0_RST_M2_REG	44
+#define R9A08G045_SSI1_RST_M2_REG	45
+#define R9A08G045_SSI2_RST_M2_REG	46
+#define R9A08G045_SSI3_RST_M2_REG	47
+#define R9A08G045_SRC_RST		48
+#define R9A08G045_USB_U2H0_HRESETN	49
+#define R9A08G045_USB_U2H1_HRESETN	50
+#define R9A08G045_USB_U2P_EXL_SYSRST	51
+#define R9A08G045_USB_PRESETN		52
+#define R9A08G045_ETH0_RST_HW_N		53
+#define R9A08G045_ETH1_RST_HW_N		54
+#define R9A08G045_I2C0_MRST		55
+#define R9A08G045_I2C1_MRST		56
+#define R9A08G045_I2C2_MRST		57
+#define R9A08G045_I2C3_MRST		58
+#define R9A08G045_SCIF0_RST_SYSTEM_N	59
+#define R9A08G045_SCIF1_RST_SYSTEM_N	60
+#define R9A08G045_SCIF2_RST_SYSTEM_N	61
+#define R9A08G045_SCIF3_RST_SYSTEM_N	62
+#define R9A08G045_SCIF4_RST_SYSTEM_N	63
+#define R9A08G045_SCIF5_RST_SYSTEM_N	64
+#define R9A08G045_SCI0_RST		65
+#define R9A08G045_SCI1_RST		66
+#define R9A08G045_IRDA_RST		67
+#define R9A08G045_RSPI0_RST		68
+#define R9A08G045_RSPI1_RST		69
+#define R9A08G045_RSPI2_RST		70
+#define R9A08G045_RSPI3_RST		71
+#define R9A08G045_RSPI4_RST		72
+#define R9A08G045_CANFD_RSTP_N		73
+#define R9A08G045_CANFD_RSTC_N		74
+#define R9A08G045_GPIO_RSTN		75
+#define R9A08G045_GPIO_PORT_RESETN	76
+#define R9A08G045_GPIO_SPARE_RESETN	77
+#define R9A08G045_ADC_PRESETN		78
+#define R9A08G045_ADC_ADRST_N		79
+#define R9A08G045_TSU_PRESETN		80
+#define R9A08G045_OCTA_ARESETN		81
+#define R9A08G045_PDM0_PRESETNT		82
+#define R9A08G045_PCI_ARESETN		83
+#define R9A08G045_PCI_RST_B		84
+#define R9A08G045_PCI_RST_GP_B		85
+#define R9A08G045_PCI_RST_PS_B		86
+#define R9A08G045_PCI_RST_RSM_B		87
+#define R9A08G045_PCI_RST_CFG_B		88
+#define R9A08G045_PCI_RST_LOAD_B	89
+#define R9A08G045_SPDIF_RST		90
+#define R9A08G045_I3C_TRESETN		91
+#define R9A08G045_I3C_PRESETN		92
+#define R9A08G045_VBAT_BRESETN		93
+
+#endif /* __DT_BINDINGS_CLOCK_R9A08G045_CPG_H__ */
-- 
2.39.2

[PATCH v2 12/28] dt-bindings: clock: renesas,rzg2l-cpg: document RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add documentation for RZ/G3S CPG. RZ/G3S CPG module is almost identical
with the one available in RZ/G2{L, UL} the exception being some core
clocks as follows:
- SD clock is composed by a mux and a divider and the divider
  has some limitation (div = 1 cannot be set if mux rate is 800MHz).
- there are 3 SD clocks
- OCTA and TSU clocks are specific to RZ/G3S
- PLL1/4/6 are specific to RZ/G3S with its own computation formula
Even with this RZ/G3S could use the same bindings as RZ/G2L.

Along with documentation bindings for the RZ/G3S (R9A08G045) Clock Pulse
Generator (CPG) core clocks, module clocks and resets were added.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
---

Changes in v2:
- collected Rob's tag
- squashed with
  [PATCH 21/37] dt-bindings: clock: add r9a08g045 CPG clocks and resets
  from v1
- updated commit message to reflect that bindings were also added to
  this patch
- removed R9A08G045_USB_SCLK
- @Geert: please note I haven't collected your Rb tag as I did the squash

 .../bindings/clock/renesas,rzg2l-cpg.yaml     |   1 +
 include/dt-bindings/clock/r9a08g045-cpg.h     | 242 ++++++++++++++++++
 2 files changed, 243 insertions(+)
 create mode 100644 include/dt-bindings/clock/r9a08g045-cpg.h

diff --git a/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml b/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml
index fe2fba18ae84..80a8c7114c31 100644
--- a/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml
+++ b/Documentation/devicetree/bindings/clock/renesas,rzg2l-cpg.yaml
@@ -27,6 +27,7 @@ properties:
       - renesas,r9a07g043-cpg # RZ/G2UL{Type-1,Type-2} and RZ/Five
       - renesas,r9a07g044-cpg # RZ/G2{L,LC}
       - renesas,r9a07g054-cpg # RZ/V2L
+      - renesas,r9a08g045-cpg # RZ/G3S
       - renesas,r9a09g011-cpg # RZ/V2M
 
   reg:
diff --git a/include/dt-bindings/clock/r9a08g045-cpg.h b/include/dt-bindings/clock/r9a08g045-cpg.h
new file mode 100644
index 000000000000..410725b778a8
--- /dev/null
+++ b/include/dt-bindings/clock/r9a08g045-cpg.h
@@ -0,0 +1,242 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+#ifndef __DT_BINDINGS_CLOCK_R9A08G045_CPG_H__
+#define __DT_BINDINGS_CLOCK_R9A08G045_CPG_H__
+
+#include <dt-bindings/clock/renesas-cpg-mssr.h>
+
+/* R9A08G045 CPG Core Clocks */
+#define R9A08G045_CLK_I			0
+#define R9A08G045_CLK_I2		1
+#define R9A08G045_CLK_I3		2
+#define R9A08G045_CLK_S0		3
+#define R9A08G045_CLK_SPI0		4
+#define R9A08G045_CLK_SPI1		5
+#define R9A08G045_CLK_SD0		6
+#define R9A08G045_CLK_SD1		7
+#define R9A08G045_CLK_SD2		8
+#define R9A08G045_CLK_M0		9
+#define R9A08G045_CLK_HP		10
+#define R9A08G045_CLK_TSU		11
+#define R9A08G045_CLK_ZT		12
+#define R9A08G045_CLK_P0		13
+#define R9A08G045_CLK_P1		14
+#define R9A08G045_CLK_P2		15
+#define R9A08G045_CLK_P3		16
+#define R9A08G045_CLK_P4		17
+#define R9A08G045_CLK_P5		18
+#define R9A08G045_CLK_AT		19
+#define R9A08G045_CLK_OC0		20
+#define R9A08G045_CLK_OC1		21
+#define R9A08G045_OSCCLK		22
+#define R9A08G045_OSCCLK2		23
+#define R9A08G045_SWD			24
+
+/* R9A08G045 Module Clocks */
+#define R9A08G045_OCTA_ACLK		0
+#define R9A08G045_OCTA_MCLK		1
+#define R9A08G045_CA55_SCLK		2
+#define R9A08G045_CA55_PCLK		3
+#define R9A08G045_CA55_ATCLK		4
+#define R9A08G045_CA55_GICCLK		5
+#define R9A08G045_CA55_PERICLK		6
+#define R9A08G045_CA55_ACLK		7
+#define R9A08G045_CA55_TSCLK		8
+#define R9A08G045_SRAM_ACPU_ACLK0	9
+#define R9A08G045_SRAM_ACPU_ACLK1	10
+#define R9A08G045_SRAM_ACPU_ACLK2	11
+#define R9A08G045_GIC600_GICCLK		12
+#define R9A08G045_IA55_CLK		13
+#define R9A08G045_IA55_PCLK		14
+#define R9A08G045_MHU_PCLK		15
+#define R9A08G045_SYC_CNT_CLK		16
+#define R9A08G045_DMAC_ACLK		17
+#define R9A08G045_DMAC_PCLK		18
+#define R9A08G045_OSTM0_PCLK		19
+#define R9A08G045_OSTM1_PCLK		20
+#define R9A08G045_OSTM2_PCLK		21
+#define R9A08G045_OSTM3_PCLK		22
+#define R9A08G045_OSTM4_PCLK		23
+#define R9A08G045_OSTM5_PCLK		24
+#define R9A08G045_OSTM6_PCLK		25
+#define R9A08G045_OSTM7_PCLK		26
+#define R9A08G045_MTU_X_MCK_MTU3	27
+#define R9A08G045_POE3_CLKM_POE		28
+#define R9A08G045_GPT_PCLK		29
+#define R9A08G045_POEG_A_CLKP		30
+#define R9A08G045_POEG_B_CLKP		31
+#define R9A08G045_POEG_C_CLKP		32
+#define R9A08G045_POEG_D_CLKP		33
+#define R9A08G045_WDT0_PCLK		34
+#define R9A08G045_WDT0_CLK		35
+#define R9A08G045_WDT1_PCLK		36
+#define R9A08G045_WDT1_CLK		37
+#define R9A08G045_WDT2_PCLK		38
+#define R9A08G045_WDT2_CLK		39
+#define R9A08G045_SPI_HCLK		40
+#define R9A08G045_SPI_ACLK		41
+#define R9A08G045_SPI_CLK		42
+#define R9A08G045_SPI_CLKX2		43
+#define R9A08G045_SDHI0_IMCLK		44
+#define R9A08G045_SDHI0_IMCLK2		45
+#define R9A08G045_SDHI0_CLK_HS		46
+#define R9A08G045_SDHI0_ACLK		47
+#define R9A08G045_SDHI1_IMCLK		48
+#define R9A08G045_SDHI1_IMCLK2		49
+#define R9A08G045_SDHI1_CLK_HS		50
+#define R9A08G045_SDHI1_ACLK		51
+#define R9A08G045_SDHI2_IMCLK		52
+#define R9A08G045_SDHI2_IMCLK2		53
+#define R9A08G045_SDHI2_CLK_HS		54
+#define R9A08G045_SDHI2_ACLK		55
+#define R9A08G045_SSI0_PCLK2		56
+#define R9A08G045_SSI0_PCLK_SFR		57
+#define R9A08G045_SSI1_PCLK2		58
+#define R9A08G045_SSI1_PCLK_SFR		59
+#define R9A08G045_SSI2_PCLK2		60
+#define R9A08G045_SSI2_PCLK_SFR		61
+#define R9A08G045_SSI3_PCLK2		62
+#define R9A08G045_SSI3_PCLK_SFR		63
+#define R9A08G045_SRC_CLKP		64
+#define R9A08G045_USB_U2H0_HCLK		65
+#define R9A08G045_USB_U2H1_HCLK		66
+#define R9A08G045_USB_U2P_EXR_CPUCLK	67
+#define R9A08G045_USB_PCLK		68
+#define R9A08G045_ETH0_CLK_AXI		69
+#define R9A08G045_ETH0_CLK_CHI		70
+#define R9A08G045_ETH0_REFCLK		71
+#define R9A08G045_ETH1_CLK_AXI		72
+#define R9A08G045_ETH1_CLK_CHI		73
+#define R9A08G045_ETH1_REFCLK		74
+#define R9A08G045_I2C0_PCLK		75
+#define R9A08G045_I2C1_PCLK		76
+#define R9A08G045_I2C2_PCLK		77
+#define R9A08G045_I2C3_PCLK		78
+#define R9A08G045_SCIF0_CLK_PCK		79
+#define R9A08G045_SCIF1_CLK_PCK		80
+#define R9A08G045_SCIF2_CLK_PCK		81
+#define R9A08G045_SCIF3_CLK_PCK		82
+#define R9A08G045_SCIF4_CLK_PCK		83
+#define R9A08G045_SCIF5_CLK_PCK		84
+#define R9A08G045_SCI0_CLKP		85
+#define R9A08G045_SCI1_CLKP		86
+#define R9A08G045_IRDA_CLKP		87
+#define R9A08G045_RSPI0_CLKB		88
+#define R9A08G045_RSPI1_CLKB		89
+#define R9A08G045_RSPI2_CLKB		90
+#define R9A08G045_RSPI3_CLKB		91
+#define R9A08G045_RSPI4_CLKB		92
+#define R9A08G045_CANFD_PCLK		93
+#define R9A08G045_CANFD_CLK_RAM		94
+#define R9A08G045_GPIO_HCLK		95
+#define R9A08G045_ADC_ADCLK		96
+#define R9A08G045_ADC_PCLK		97
+#define R9A08G045_TSU_PCLK		98
+#define R9A08G045_PDM_PCLK		99
+#define R9A08G045_PDM_CCLK		100
+#define R9A08G045_PCI_ACLK		101
+#define R9A08G045_PCI_CLKL1PM		102
+#define R9A08G045_SPDIF_PCLK		103
+#define R9A08G045_I3C_PCLK		104
+#define R9A08G045_I3C_TCLK		105
+#define R9A08G045_VBAT_BCLK		106
+
+/* R9A08G045 Resets */
+#define R9A08G045_CA55_RST_1_0		0
+#define R9A08G045_CA55_RST_3_0		1
+#define R9A08G045_CA55_RST_4		2
+#define R9A08G045_CA55_RST_5		3
+#define R9A08G045_CA55_RST_6		4
+#define R9A08G045_CA55_RST_7		5
+#define R9A08G045_CA55_RST_8		6
+#define R9A08G045_CA55_RST_9		7
+#define R9A08G045_CA55_RST_10		8
+#define R9A08G045_CA55_RST_11		9
+#define R9A08G045_CA55_RST_12		10
+#define R9A08G045_SRAM_ACPU_ARESETN0	11
+#define R9A08G045_SRAM_ACPU_ARESETN1	12
+#define R9A08G045_SRAM_ACPU_ARESETN2	13
+#define R9A08G045_GIC600_GICRESET_N	14
+#define R9A08G045_GIC600_DBG_GICRESET_N	15
+#define R9A08G045_IA55_RESETN		16
+#define R9A08G045_MHU_RESETN		17
+#define R9A08G045_DMAC_ARESETN		18
+#define R9A08G045_DMAC_RST_ASYNC	19
+#define R9A08G045_SYC_RESETN		20
+#define R9A08G045_OSTM0_PRESETZ		21
+#define R9A08G045_OSTM1_PRESETZ		22
+#define R9A08G045_OSTM2_PRESETZ		23
+#define R9A08G045_OSTM3_PRESETZ		24
+#define R9A08G045_OSTM4_PRESETZ		25
+#define R9A08G045_OSTM5_PRESETZ		26
+#define R9A08G045_OSTM6_PRESETZ		27
+#define R9A08G045_OSTM7_PRESETZ		28
+#define R9A08G045_MTU_X_PRESET_MTU3	29
+#define R9A08G045_POE3_RST_M_REG	30
+#define R9A08G045_GPT_RST_C		31
+#define R9A08G045_POEG_A_RST		32
+#define R9A08G045_POEG_B_RST		33
+#define R9A08G045_POEG_C_RST		34
+#define R9A08G045_POEG_D_RST		35
+#define R9A08G045_WDT0_PRESETN		36
+#define R9A08G045_WDT1_PRESETN		37
+#define R9A08G045_WDT2_PRESETN		38
+#define R9A08G045_SPI_HRESETN		39
+#define R9A08G045_SPI_ARESETN		40
+#define R9A08G045_SDHI0_IXRST		41
+#define R9A08G045_SDHI1_IXRST		42
+#define R9A08G045_SDHI2_IXRST		43
+#define R9A08G045_SSI0_RST_M2_REG	44
+#define R9A08G045_SSI1_RST_M2_REG	45
+#define R9A08G045_SSI2_RST_M2_REG	46
+#define R9A08G045_SSI3_RST_M2_REG	47
+#define R9A08G045_SRC_RST		48
+#define R9A08G045_USB_U2H0_HRESETN	49
+#define R9A08G045_USB_U2H1_HRESETN	50
+#define R9A08G045_USB_U2P_EXL_SYSRST	51
+#define R9A08G045_USB_PRESETN		52
+#define R9A08G045_ETH0_RST_HW_N		53
+#define R9A08G045_ETH1_RST_HW_N		54
+#define R9A08G045_I2C0_MRST		55
+#define R9A08G045_I2C1_MRST		56
+#define R9A08G045_I2C2_MRST		57
+#define R9A08G045_I2C3_MRST		58
+#define R9A08G045_SCIF0_RST_SYSTEM_N	59
+#define R9A08G045_SCIF1_RST_SYSTEM_N	60
+#define R9A08G045_SCIF2_RST_SYSTEM_N	61
+#define R9A08G045_SCIF3_RST_SYSTEM_N	62
+#define R9A08G045_SCIF4_RST_SYSTEM_N	63
+#define R9A08G045_SCIF5_RST_SYSTEM_N	64
+#define R9A08G045_SCI0_RST		65
+#define R9A08G045_SCI1_RST		66
+#define R9A08G045_IRDA_RST		67
+#define R9A08G045_RSPI0_RST		68
+#define R9A08G045_RSPI1_RST		69
+#define R9A08G045_RSPI2_RST		70
+#define R9A08G045_RSPI3_RST		71
+#define R9A08G045_RSPI4_RST		72
+#define R9A08G045_CANFD_RSTP_N		73
+#define R9A08G045_CANFD_RSTC_N		74
+#define R9A08G045_GPIO_RSTN		75
+#define R9A08G045_GPIO_PORT_RESETN	76
+#define R9A08G045_GPIO_SPARE_RESETN	77
+#define R9A08G045_ADC_PRESETN		78
+#define R9A08G045_ADC_ADRST_N		79
+#define R9A08G045_TSU_PRESETN		80
+#define R9A08G045_OCTA_ARESETN		81
+#define R9A08G045_PDM0_PRESETNT		82
+#define R9A08G045_PCI_ARESETN		83
+#define R9A08G045_PCI_RST_B		84
+#define R9A08G045_PCI_RST_GP_B		85
+#define R9A08G045_PCI_RST_PS_B		86
+#define R9A08G045_PCI_RST_RSM_B		87
+#define R9A08G045_PCI_RST_CFG_B		88
+#define R9A08G045_PCI_RST_LOAD_B	89
+#define R9A08G045_SPDIF_RST		90
+#define R9A08G045_I3C_TRESETN		91
+#define R9A08G045_I3C_PRESETN		92
+#define R9A08G045_VBAT_BRESETN		93
+
+#endif /* __DT_BINDINGS_CLOCK_R9A08G045_CPG_H__ */
-- 
2.39.2


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[PATCH v2 13/28] clk: renesas: add minimal boot support for RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add minimal clock and reset support for RZ/G3S SoC to be able to boot
Linux from SD Card/eMMC. This includes necessary core clocks for booting
and GIC, SCIF, GPIO, SD0 mod clocks and resets.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- used RZ/G3S specific definition for CPG_CLKDIVSTATUS register
- removed CLK_PLL3_DIV2_2, CLK_SD0_DIV, CLK_S0_DIV2
- added space after { and before } in array initializations
- s/indexes/indices/g
- s/.osc/OSC and moved it in core output clocks section
- s/.osc2/OSC2 and moved it in core output clock section
- s/SD0_DIV4/.sd0_div4

 drivers/clk/renesas/Kconfig         |   7 +-
 drivers/clk/renesas/Makefile        |   1 +
 drivers/clk/renesas/r9a08g045-cpg.c | 213 ++++++++++++++++++++++++++++
 drivers/clk/renesas/rzg2l-cpg.c     |   6 +
 drivers/clk/renesas/rzg2l-cpg.h     |   1 +
 5 files changed, 227 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/renesas/r9a08g045-cpg.c

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 37632a0659d8..69396e197959 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -37,6 +37,7 @@ config CLK_RENESAS
 	select CLK_R9A07G043 if ARCH_R9A07G043
 	select CLK_R9A07G044 if ARCH_R9A07G044
 	select CLK_R9A07G054 if ARCH_R9A07G054
+	select CLK_R9A08G045 if ARCH_R9A08G045
 	select CLK_R9A09G011 if ARCH_R9A09G011
 	select CLK_SH73A0 if ARCH_SH73A0
 
@@ -179,6 +180,10 @@ config CLK_R9A07G054
 	bool "RZ/V2L clock support" if COMPILE_TEST
 	select CLK_RZG2L
 
+config CLK_R9A08G045
+	bool "RZ/G3S clock support" if COMPILE_TEST
+	select CLK_RZG2L
+
 config CLK_R9A09G011
 	bool "RZ/V2M clock support" if COMPILE_TEST
 	select CLK_RZG2L
@@ -215,7 +220,7 @@ config CLK_RCAR_USB2_CLOCK_SEL
 	  This is a driver for R-Car USB2 clock selector
 
 config CLK_RZG2L
-	bool "Renesas RZ/{G2L,G2UL,V2L} family clock support" if COMPILE_TEST
+	bool "Renesas RZ/{G2L,G2UL,G3S,V2L} family clock support" if COMPILE_TEST
 	select RESET_CONTROLLER
 
 # Generic
diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index de907623fe3f..879a07d445f9 100644
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_CLK_R9A06G032)		+= r9a06g032-clocks.o
 obj-$(CONFIG_CLK_R9A07G043)		+= r9a07g043-cpg.o
 obj-$(CONFIG_CLK_R9A07G044)		+= r9a07g044-cpg.o
 obj-$(CONFIG_CLK_R9A07G054)		+= r9a07g044-cpg.o
+obj-$(CONFIG_CLK_R9A08G045)		+= r9a08g045-cpg.o
 obj-$(CONFIG_CLK_R9A09G011)		+= r9a09g011-cpg.o
 obj-$(CONFIG_CLK_SH73A0)		+= clk-sh73a0.o
 
diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
new file mode 100644
index 000000000000..6e4ac0860694
--- /dev/null
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RZ/G3S CPG driver
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/clock/r9a08g045-cpg.h>
+
+#include "rzg2l-cpg.h"
+
+/* RZ/G3S Specific registers. */
+#define G3S_CPG_PL2_DDIV		(0x204)
+#define G3S_CPG_SDHI_DDIV		(0x218)
+#define G3S_CPG_PLL_DSEL		(0x240)
+#define G3S_CPG_SDHI_DSEL		(0x244)
+#define G3S_CLKDIVSTATUS		(0x280)
+#define G3S_CLKSELSTATUS		(0x284)
+
+/* RZ/G3S Specific division configuration.  */
+#define G3S_DIVPL2B		DDIV_PACK(G3S_CPG_PL2_DDIV, 4, 3)
+#define G3S_DIV_SDHI0		DDIV_PACK(G3S_CPG_SDHI_DDIV, 0, 1)
+
+/* RZ/G3S Clock status configuration. */
+#define G3S_DIVPL1A_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 0, 1)
+#define G3S_DIVPL2B_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 5, 1)
+#define G3S_DIVPL3A_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 8, 1)
+#define G3S_DIVPL3B_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 9, 1)
+#define G3S_DIVPL3C_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 10, 1)
+#define G3S_DIV_SDHI0_STS	DDIV_PACK(G3S_CLKDIVSTATUS, 24, 1)
+
+#define G3S_SEL_PLL4_STS	SEL_PLL_PACK(G3S_CLKSELSTATUS, 6, 1)
+#define G3S_SEL_SDHI0_STS	SEL_PLL_PACK(G3S_CLKSELSTATUS, 16, 1)
+
+/* RZ/G3S Specific clocks select. */
+#define G3S_SEL_PLL4		SEL_PLL_PACK(G3S_CPG_PLL_DSEL, 6, 1)
+#define G3S_SEL_SDHI0		SEL_PLL_PACK(G3S_CPG_SDHI_DSEL, 0, 2)
+
+/* PLL 1/4/6 configuration registers macro. */
+#define G3S_PLL146_CONF(clk1, clk2)	((clk1) << 22 | (clk2) << 12)
+
+#define DEF_G3S_MUX(_name, _id, _conf, _parent_names, _mux_flags, _clk_flags) \
+	DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = (_conf), \
+		 .parent_names = (_parent_names), \
+		 .num_parents = ARRAY_SIZE((_parent_names)), \
+		 .mux_flags = CLK_MUX_HIWORD_MASK | (_mux_flags), \
+		 .flag = (_clk_flags))
+
+enum clk_ids {
+	/* Core Clock Outputs exported to DT */
+	LAST_DT_CORE_CLK = R9A08G045_SWD,
+
+	/* External Input Clocks */
+	CLK_EXTAL,
+
+	/* Internal Core Clocks */
+	CLK_OSC_DIV1000,
+	CLK_PLL1,
+	CLK_PLL2,
+	CLK_PLL2_DIV2,
+	CLK_PLL2_DIV2_8,
+	CLK_PLL2_DIV6,
+	CLK_PLL3,
+	CLK_PLL3_DIV2,
+	CLK_PLL3_DIV2_4,
+	CLK_PLL3_DIV2_8,
+	CLK_PLL3_DIV6,
+	CLK_PLL4,
+	CLK_PLL6,
+	CLK_PLL6_DIV2,
+	CLK_SEL_SDHI0,
+	CLK_SEL_PLL4,
+	CLK_P1_DIV2,
+	CLK_P3_DIV2,
+	CLK_SD0_DIV4,
+
+	/* Module Clocks */
+	MOD_CLK_BASE,
+};
+
+/* Divider tables */
+static const struct clk_div_table dtable_1_2[] = {
+	{ 0, 1 },
+	{ 1, 2 },
+	{ 0, 0 },
+};
+
+static const struct clk_div_table dtable_1_8[] = {
+	{ 0, 1 },
+	{ 1, 2 },
+	{ 2, 4 },
+	{ 3, 8 },
+	{ 0, 0 },
+};
+
+static const struct clk_div_table dtable_1_32[] = {
+	{ 0, 1 },
+	{ 1, 2 },
+	{ 2, 4 },
+	{ 3, 8 },
+	{ 4, 32 },
+	{ 0, 0 },
+};
+
+/* Mux clock names tables. */
+static const char * const sel_sdhi[] = { ".pll2_div2", ".pll6", ".pll2_div6" };
+static const char * const sel_pll4[] = { ".osc_div1000", ".pll4" };
+
+/* Mux clock indices tables. */
+static const u32 mtable_sd[] = { 0, 2, 3 };
+static const u32 mtable_pll4[] = { 0, 1 };
+
+static const struct cpg_core_clk r9a08g045_core_clks[] __initconst = {
+	/* External Clock Inputs */
+	DEF_INPUT("extal", CLK_EXTAL),
+
+	/* Internal Core Clocks */
+	DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
+	DEF_G3S_PLL(".pll1", CLK_PLL1, CLK_EXTAL, G3S_PLL146_CONF(0x4, 0x8)),
+	DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 200, 3),
+	DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 200, 3),
+	DEF_FIXED(".pll4", CLK_PLL4, CLK_EXTAL, 100, 3),
+	DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6),
+	DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
+	DEF_FIXED(".pll2_div2_8", CLK_PLL2_DIV2_8, CLK_PLL2_DIV2, 1, 8),
+	DEF_FIXED(".pll2_div6", CLK_PLL2_DIV6, CLK_PLL2, 1, 6),
+	DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
+	DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4),
+	DEF_FIXED(".pll3_div2_8", CLK_PLL3_DIV2_8, CLK_PLL3_DIV2, 1, 8),
+	DEF_FIXED(".pll3_div6", CLK_PLL3_DIV6, CLK_PLL3, 1, 6),
+	DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 1, 2),
+	DEF_SD_MUX(".sel_sd0", CLK_SEL_SDHI0, G3S_SEL_SDHI0, G3S_SEL_SDHI0_STS, sel_sdhi,
+		   mtable_sd, 0, NULL),
+	DEF_SD_MUX(".sel_pll4", CLK_SEL_PLL4, G3S_SEL_PLL4, G3S_SEL_PLL4_STS, sel_pll4,
+		   mtable_pll4, CLK_SET_PARENT_GATE, NULL),
+
+	/* Core output clk */
+	DEF_G3S_DIV("I", R9A08G045_CLK_I, CLK_PLL1, DIVPL1A, G3S_DIVPL1A_STS, dtable_1_8,
+		    0, 0, NULL),
+	DEF_G3S_DIV("P0", R9A08G045_CLK_P0, CLK_PLL2_DIV2_8, G3S_DIVPL2B, G3S_DIVPL2B_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_G3S_DIV("SD0", R9A08G045_CLK_SD0, CLK_SEL_SDHI0, G3S_DIV_SDHI0, G3S_DIV_SDHI0_STS,
+		    dtable_1_2, 800000000UL, CLK_SET_RATE_PARENT, rzg3s_cpg_div_clk_notifier),
+	DEF_FIXED(".sd0_div4", CLK_SD0_DIV4, R9A08G045_CLK_SD0, 1, 4),
+	DEF_FIXED("M0", R9A08G045_CLK_M0, CLK_PLL3_DIV2_4, 1, 1),
+	DEF_G3S_DIV("P1", R9A08G045_CLK_P1, CLK_PLL3_DIV2_4, DIVPL3A, G3S_DIVPL3A_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_FIXED("P1_DIV2", CLK_P1_DIV2, R9A08G045_CLK_P1, 1, 2),
+	DEF_G3S_DIV("P2", R9A08G045_CLK_P2, CLK_PLL3_DIV2_8, DIVPL3B, G3S_DIVPL3B_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_G3S_DIV("P3", R9A08G045_CLK_P3, CLK_PLL3_DIV2_4, DIVPL3C, G3S_DIVPL3C_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_FIXED("P3_DIV2", CLK_P3_DIV2, R9A08G045_CLK_P3, 1, 2),
+	DEF_FIXED("S0", R9A08G045_CLK_S0, CLK_SEL_PLL4, 1, 2),
+	DEF_FIXED("OSC", R9A08G045_OSCCLK, CLK_EXTAL, 1, 1),
+	DEF_FIXED("OSC2", R9A08G045_OSCCLK2, CLK_EXTAL, 1, 3),
+};
+
+static const struct rzg2l_mod_clk r9a08g045_mod_clks[] = {
+	DEF_MOD("gic_gicclk",		R9A08G045_GIC600_GICCLK, R9A08G045_CLK_P1, 0x514, 0),
+	DEF_MOD("ia55_clk",		R9A08G045_IA55_CLK, R9A08G045_CLK_P1, 0x518, 1),
+	DEF_MOD("dmac_aclk",		R9A08G045_DMAC_ACLK, R9A08G045_CLK_P3, 0x52c, 0),
+	DEF_MOD("sdhi0_imclk",		R9A08G045_SDHI0_IMCLK, CLK_SD0_DIV4, 0x554, 0),
+	DEF_MOD("sdhi0_imclk2",		R9A08G045_SDHI0_IMCLK2, CLK_SD0_DIV4, 0x554, 1),
+	DEF_MOD("sdhi0_clk_hs",		R9A08G045_SDHI0_CLK_HS, R9A08G045_CLK_SD0, 0x554, 2),
+	DEF_MOD("sdhi0_aclk",		R9A08G045_SDHI0_ACLK, R9A08G045_CLK_P1, 0x554, 3),
+	DEF_MOD("scif0_clk_pck",	R9A08G045_SCIF0_CLK_PCK, R9A08G045_CLK_P0, 0x584, 0),
+	DEF_MOD("gpio_hclk",		R9A08G045_GPIO_HCLK, R9A08G045_OSCCLK, 0x598, 0),
+};
+
+static const struct rzg2l_reset r9a08g045_resets[] = {
+	DEF_RST(R9A08G045_GIC600_GICRESET_N, 0x814, 0),
+	DEF_RST(R9A08G045_GIC600_DBG_GICRESET_N, 0x814, 1),
+	DEF_RST(R9A08G045_SDHI0_IXRST, 0x854, 0),
+	DEF_RST(R9A08G045_SCIF0_RST_SYSTEM_N, 0x884, 0),
+	DEF_RST(R9A08G045_GPIO_RSTN, 0x898, 0),
+	DEF_RST(R9A08G045_GPIO_PORT_RESETN, 0x898, 1),
+	DEF_RST(R9A08G045_GPIO_SPARE_RESETN, 0x898, 2),
+};
+
+static const unsigned int r9a08g045_crit_mod_clks[] __initconst = {
+	MOD_CLK_BASE + R9A08G045_GIC600_GICCLK,
+	MOD_CLK_BASE + R9A08G045_IA55_CLK,
+	MOD_CLK_BASE + R9A08G045_DMAC_ACLK,
+};
+
+const struct rzg2l_cpg_info r9a08g045_cpg_info = {
+	/* Core Clocks */
+	.core_clks = r9a08g045_core_clks,
+	.num_core_clks = ARRAY_SIZE(r9a08g045_core_clks),
+	.last_dt_core_clk = LAST_DT_CORE_CLK,
+	.num_total_core_clks = MOD_CLK_BASE,
+
+	/* Critical Module Clocks */
+	.crit_mod_clks = r9a08g045_crit_mod_clks,
+	.num_crit_mod_clks = ARRAY_SIZE(r9a08g045_crit_mod_clks),
+
+	/* Module Clocks */
+	.mod_clks = r9a08g045_mod_clks,
+	.num_mod_clks = ARRAY_SIZE(r9a08g045_mod_clks),
+	.num_hw_mod_clks = R9A08G045_VBAT_BCLK + 1,
+
+	/* Resets */
+	.resets = r9a08g045_resets,
+	.num_resets = R9A08G045_VBAT_BRESETN + 1, /* Last reset ID + 1 */
+
+	.has_clk_mon_regs = true,
+};
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 3080e9391f71..bf49b40a3b63 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -1728,6 +1728,12 @@ static const struct of_device_id rzg2l_cpg_match[] = {
 		.data = &r9a07g054_cpg_info,
 	},
 #endif
+#ifdef CONFIG_CLK_R9A08G045
+	{
+		.compatible = "renesas,r9a08g045-cpg",
+		.data = &r9a08g045_cpg_info,
+	},
+#endif
 #ifdef CONFIG_CLK_R9A09G011
 	{
 		.compatible = "renesas,r9a09g011-cpg",
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 8312972cc496..7112320f26e2 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -282,6 +282,7 @@ struct rzg2l_cpg_info {
 extern const struct rzg2l_cpg_info r9a07g043_cpg_info;
 extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
 extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
+extern const struct rzg2l_cpg_info r9a08g045_cpg_info;
 extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
 
 int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
-- 
2.39.2

[PATCH v2 13/28] clk: renesas: add minimal boot support for RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add minimal clock and reset support for RZ/G3S SoC to be able to boot
Linux from SD Card/eMMC. This includes necessary core clocks for booting
and GIC, SCIF, GPIO, SD0 mod clocks and resets.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- used RZ/G3S specific definition for CPG_CLKDIVSTATUS register
- removed CLK_PLL3_DIV2_2, CLK_SD0_DIV, CLK_S0_DIV2
- added space after { and before } in array initializations
- s/indexes/indices/g
- s/.osc/OSC and moved it in core output clocks section
- s/.osc2/OSC2 and moved it in core output clock section
- s/SD0_DIV4/.sd0_div4

 drivers/clk/renesas/Kconfig         |   7 +-
 drivers/clk/renesas/Makefile        |   1 +
 drivers/clk/renesas/r9a08g045-cpg.c | 213 ++++++++++++++++++++++++++++
 drivers/clk/renesas/rzg2l-cpg.c     |   6 +
 drivers/clk/renesas/rzg2l-cpg.h     |   1 +
 5 files changed, 227 insertions(+), 1 deletion(-)
 create mode 100644 drivers/clk/renesas/r9a08g045-cpg.c

diff --git a/drivers/clk/renesas/Kconfig b/drivers/clk/renesas/Kconfig
index 37632a0659d8..69396e197959 100644
--- a/drivers/clk/renesas/Kconfig
+++ b/drivers/clk/renesas/Kconfig
@@ -37,6 +37,7 @@ config CLK_RENESAS
 	select CLK_R9A07G043 if ARCH_R9A07G043
 	select CLK_R9A07G044 if ARCH_R9A07G044
 	select CLK_R9A07G054 if ARCH_R9A07G054
+	select CLK_R9A08G045 if ARCH_R9A08G045
 	select CLK_R9A09G011 if ARCH_R9A09G011
 	select CLK_SH73A0 if ARCH_SH73A0
 
@@ -179,6 +180,10 @@ config CLK_R9A07G054
 	bool "RZ/V2L clock support" if COMPILE_TEST
 	select CLK_RZG2L
 
+config CLK_R9A08G045
+	bool "RZ/G3S clock support" if COMPILE_TEST
+	select CLK_RZG2L
+
 config CLK_R9A09G011
 	bool "RZ/V2M clock support" if COMPILE_TEST
 	select CLK_RZG2L
@@ -215,7 +220,7 @@ config CLK_RCAR_USB2_CLOCK_SEL
 	  This is a driver for R-Car USB2 clock selector
 
 config CLK_RZG2L
-	bool "Renesas RZ/{G2L,G2UL,V2L} family clock support" if COMPILE_TEST
+	bool "Renesas RZ/{G2L,G2UL,G3S,V2L} family clock support" if COMPILE_TEST
 	select RESET_CONTROLLER
 
 # Generic
diff --git a/drivers/clk/renesas/Makefile b/drivers/clk/renesas/Makefile
index de907623fe3f..879a07d445f9 100644
--- a/drivers/clk/renesas/Makefile
+++ b/drivers/clk/renesas/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_CLK_R9A06G032)		+= r9a06g032-clocks.o
 obj-$(CONFIG_CLK_R9A07G043)		+= r9a07g043-cpg.o
 obj-$(CONFIG_CLK_R9A07G044)		+= r9a07g044-cpg.o
 obj-$(CONFIG_CLK_R9A07G054)		+= r9a07g044-cpg.o
+obj-$(CONFIG_CLK_R9A08G045)		+= r9a08g045-cpg.o
 obj-$(CONFIG_CLK_R9A09G011)		+= r9a09g011-cpg.o
 obj-$(CONFIG_CLK_SH73A0)		+= clk-sh73a0.o
 
diff --git a/drivers/clk/renesas/r9a08g045-cpg.c b/drivers/clk/renesas/r9a08g045-cpg.c
new file mode 100644
index 000000000000..6e4ac0860694
--- /dev/null
+++ b/drivers/clk/renesas/r9a08g045-cpg.c
@@ -0,0 +1,213 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RZ/G3S CPG driver
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+
+#include <dt-bindings/clock/r9a08g045-cpg.h>
+
+#include "rzg2l-cpg.h"
+
+/* RZ/G3S Specific registers. */
+#define G3S_CPG_PL2_DDIV		(0x204)
+#define G3S_CPG_SDHI_DDIV		(0x218)
+#define G3S_CPG_PLL_DSEL		(0x240)
+#define G3S_CPG_SDHI_DSEL		(0x244)
+#define G3S_CLKDIVSTATUS		(0x280)
+#define G3S_CLKSELSTATUS		(0x284)
+
+/* RZ/G3S Specific division configuration.  */
+#define G3S_DIVPL2B		DDIV_PACK(G3S_CPG_PL2_DDIV, 4, 3)
+#define G3S_DIV_SDHI0		DDIV_PACK(G3S_CPG_SDHI_DDIV, 0, 1)
+
+/* RZ/G3S Clock status configuration. */
+#define G3S_DIVPL1A_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 0, 1)
+#define G3S_DIVPL2B_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 5, 1)
+#define G3S_DIVPL3A_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 8, 1)
+#define G3S_DIVPL3B_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 9, 1)
+#define G3S_DIVPL3C_STS		DDIV_PACK(G3S_CLKDIVSTATUS, 10, 1)
+#define G3S_DIV_SDHI0_STS	DDIV_PACK(G3S_CLKDIVSTATUS, 24, 1)
+
+#define G3S_SEL_PLL4_STS	SEL_PLL_PACK(G3S_CLKSELSTATUS, 6, 1)
+#define G3S_SEL_SDHI0_STS	SEL_PLL_PACK(G3S_CLKSELSTATUS, 16, 1)
+
+/* RZ/G3S Specific clocks select. */
+#define G3S_SEL_PLL4		SEL_PLL_PACK(G3S_CPG_PLL_DSEL, 6, 1)
+#define G3S_SEL_SDHI0		SEL_PLL_PACK(G3S_CPG_SDHI_DSEL, 0, 2)
+
+/* PLL 1/4/6 configuration registers macro. */
+#define G3S_PLL146_CONF(clk1, clk2)	((clk1) << 22 | (clk2) << 12)
+
+#define DEF_G3S_MUX(_name, _id, _conf, _parent_names, _mux_flags, _clk_flags) \
+	DEF_TYPE(_name, _id, CLK_TYPE_MUX, .conf = (_conf), \
+		 .parent_names = (_parent_names), \
+		 .num_parents = ARRAY_SIZE((_parent_names)), \
+		 .mux_flags = CLK_MUX_HIWORD_MASK | (_mux_flags), \
+		 .flag = (_clk_flags))
+
+enum clk_ids {
+	/* Core Clock Outputs exported to DT */
+	LAST_DT_CORE_CLK = R9A08G045_SWD,
+
+	/* External Input Clocks */
+	CLK_EXTAL,
+
+	/* Internal Core Clocks */
+	CLK_OSC_DIV1000,
+	CLK_PLL1,
+	CLK_PLL2,
+	CLK_PLL2_DIV2,
+	CLK_PLL2_DIV2_8,
+	CLK_PLL2_DIV6,
+	CLK_PLL3,
+	CLK_PLL3_DIV2,
+	CLK_PLL3_DIV2_4,
+	CLK_PLL3_DIV2_8,
+	CLK_PLL3_DIV6,
+	CLK_PLL4,
+	CLK_PLL6,
+	CLK_PLL6_DIV2,
+	CLK_SEL_SDHI0,
+	CLK_SEL_PLL4,
+	CLK_P1_DIV2,
+	CLK_P3_DIV2,
+	CLK_SD0_DIV4,
+
+	/* Module Clocks */
+	MOD_CLK_BASE,
+};
+
+/* Divider tables */
+static const struct clk_div_table dtable_1_2[] = {
+	{ 0, 1 },
+	{ 1, 2 },
+	{ 0, 0 },
+};
+
+static const struct clk_div_table dtable_1_8[] = {
+	{ 0, 1 },
+	{ 1, 2 },
+	{ 2, 4 },
+	{ 3, 8 },
+	{ 0, 0 },
+};
+
+static const struct clk_div_table dtable_1_32[] = {
+	{ 0, 1 },
+	{ 1, 2 },
+	{ 2, 4 },
+	{ 3, 8 },
+	{ 4, 32 },
+	{ 0, 0 },
+};
+
+/* Mux clock names tables. */
+static const char * const sel_sdhi[] = { ".pll2_div2", ".pll6", ".pll2_div6" };
+static const char * const sel_pll4[] = { ".osc_div1000", ".pll4" };
+
+/* Mux clock indices tables. */
+static const u32 mtable_sd[] = { 0, 2, 3 };
+static const u32 mtable_pll4[] = { 0, 1 };
+
+static const struct cpg_core_clk r9a08g045_core_clks[] __initconst = {
+	/* External Clock Inputs */
+	DEF_INPUT("extal", CLK_EXTAL),
+
+	/* Internal Core Clocks */
+	DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
+	DEF_G3S_PLL(".pll1", CLK_PLL1, CLK_EXTAL, G3S_PLL146_CONF(0x4, 0x8)),
+	DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 200, 3),
+	DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 200, 3),
+	DEF_FIXED(".pll4", CLK_PLL4, CLK_EXTAL, 100, 3),
+	DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6),
+	DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
+	DEF_FIXED(".pll2_div2_8", CLK_PLL2_DIV2_8, CLK_PLL2_DIV2, 1, 8),
+	DEF_FIXED(".pll2_div6", CLK_PLL2_DIV6, CLK_PLL2, 1, 6),
+	DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
+	DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4),
+	DEF_FIXED(".pll3_div2_8", CLK_PLL3_DIV2_8, CLK_PLL3_DIV2, 1, 8),
+	DEF_FIXED(".pll3_div6", CLK_PLL3_DIV6, CLK_PLL3, 1, 6),
+	DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 1, 2),
+	DEF_SD_MUX(".sel_sd0", CLK_SEL_SDHI0, G3S_SEL_SDHI0, G3S_SEL_SDHI0_STS, sel_sdhi,
+		   mtable_sd, 0, NULL),
+	DEF_SD_MUX(".sel_pll4", CLK_SEL_PLL4, G3S_SEL_PLL4, G3S_SEL_PLL4_STS, sel_pll4,
+		   mtable_pll4, CLK_SET_PARENT_GATE, NULL),
+
+	/* Core output clk */
+	DEF_G3S_DIV("I", R9A08G045_CLK_I, CLK_PLL1, DIVPL1A, G3S_DIVPL1A_STS, dtable_1_8,
+		    0, 0, NULL),
+	DEF_G3S_DIV("P0", R9A08G045_CLK_P0, CLK_PLL2_DIV2_8, G3S_DIVPL2B, G3S_DIVPL2B_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_G3S_DIV("SD0", R9A08G045_CLK_SD0, CLK_SEL_SDHI0, G3S_DIV_SDHI0, G3S_DIV_SDHI0_STS,
+		    dtable_1_2, 800000000UL, CLK_SET_RATE_PARENT, rzg3s_cpg_div_clk_notifier),
+	DEF_FIXED(".sd0_div4", CLK_SD0_DIV4, R9A08G045_CLK_SD0, 1, 4),
+	DEF_FIXED("M0", R9A08G045_CLK_M0, CLK_PLL3_DIV2_4, 1, 1),
+	DEF_G3S_DIV("P1", R9A08G045_CLK_P1, CLK_PLL3_DIV2_4, DIVPL3A, G3S_DIVPL3A_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_FIXED("P1_DIV2", CLK_P1_DIV2, R9A08G045_CLK_P1, 1, 2),
+	DEF_G3S_DIV("P2", R9A08G045_CLK_P2, CLK_PLL3_DIV2_8, DIVPL3B, G3S_DIVPL3B_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_G3S_DIV("P3", R9A08G045_CLK_P3, CLK_PLL3_DIV2_4, DIVPL3C, G3S_DIVPL3C_STS,
+		    dtable_1_32, 0, 0, NULL),
+	DEF_FIXED("P3_DIV2", CLK_P3_DIV2, R9A08G045_CLK_P3, 1, 2),
+	DEF_FIXED("S0", R9A08G045_CLK_S0, CLK_SEL_PLL4, 1, 2),
+	DEF_FIXED("OSC", R9A08G045_OSCCLK, CLK_EXTAL, 1, 1),
+	DEF_FIXED("OSC2", R9A08G045_OSCCLK2, CLK_EXTAL, 1, 3),
+};
+
+static const struct rzg2l_mod_clk r9a08g045_mod_clks[] = {
+	DEF_MOD("gic_gicclk",		R9A08G045_GIC600_GICCLK, R9A08G045_CLK_P1, 0x514, 0),
+	DEF_MOD("ia55_clk",		R9A08G045_IA55_CLK, R9A08G045_CLK_P1, 0x518, 1),
+	DEF_MOD("dmac_aclk",		R9A08G045_DMAC_ACLK, R9A08G045_CLK_P3, 0x52c, 0),
+	DEF_MOD("sdhi0_imclk",		R9A08G045_SDHI0_IMCLK, CLK_SD0_DIV4, 0x554, 0),
+	DEF_MOD("sdhi0_imclk2",		R9A08G045_SDHI0_IMCLK2, CLK_SD0_DIV4, 0x554, 1),
+	DEF_MOD("sdhi0_clk_hs",		R9A08G045_SDHI0_CLK_HS, R9A08G045_CLK_SD0, 0x554, 2),
+	DEF_MOD("sdhi0_aclk",		R9A08G045_SDHI0_ACLK, R9A08G045_CLK_P1, 0x554, 3),
+	DEF_MOD("scif0_clk_pck",	R9A08G045_SCIF0_CLK_PCK, R9A08G045_CLK_P0, 0x584, 0),
+	DEF_MOD("gpio_hclk",		R9A08G045_GPIO_HCLK, R9A08G045_OSCCLK, 0x598, 0),
+};
+
+static const struct rzg2l_reset r9a08g045_resets[] = {
+	DEF_RST(R9A08G045_GIC600_GICRESET_N, 0x814, 0),
+	DEF_RST(R9A08G045_GIC600_DBG_GICRESET_N, 0x814, 1),
+	DEF_RST(R9A08G045_SDHI0_IXRST, 0x854, 0),
+	DEF_RST(R9A08G045_SCIF0_RST_SYSTEM_N, 0x884, 0),
+	DEF_RST(R9A08G045_GPIO_RSTN, 0x898, 0),
+	DEF_RST(R9A08G045_GPIO_PORT_RESETN, 0x898, 1),
+	DEF_RST(R9A08G045_GPIO_SPARE_RESETN, 0x898, 2),
+};
+
+static const unsigned int r9a08g045_crit_mod_clks[] __initconst = {
+	MOD_CLK_BASE + R9A08G045_GIC600_GICCLK,
+	MOD_CLK_BASE + R9A08G045_IA55_CLK,
+	MOD_CLK_BASE + R9A08G045_DMAC_ACLK,
+};
+
+const struct rzg2l_cpg_info r9a08g045_cpg_info = {
+	/* Core Clocks */
+	.core_clks = r9a08g045_core_clks,
+	.num_core_clks = ARRAY_SIZE(r9a08g045_core_clks),
+	.last_dt_core_clk = LAST_DT_CORE_CLK,
+	.num_total_core_clks = MOD_CLK_BASE,
+
+	/* Critical Module Clocks */
+	.crit_mod_clks = r9a08g045_crit_mod_clks,
+	.num_crit_mod_clks = ARRAY_SIZE(r9a08g045_crit_mod_clks),
+
+	/* Module Clocks */
+	.mod_clks = r9a08g045_mod_clks,
+	.num_mod_clks = ARRAY_SIZE(r9a08g045_mod_clks),
+	.num_hw_mod_clks = R9A08G045_VBAT_BCLK + 1,
+
+	/* Resets */
+	.resets = r9a08g045_resets,
+	.num_resets = R9A08G045_VBAT_BRESETN + 1, /* Last reset ID + 1 */
+
+	.has_clk_mon_regs = true,
+};
diff --git a/drivers/clk/renesas/rzg2l-cpg.c b/drivers/clk/renesas/rzg2l-cpg.c
index 3080e9391f71..bf49b40a3b63 100644
--- a/drivers/clk/renesas/rzg2l-cpg.c
+++ b/drivers/clk/renesas/rzg2l-cpg.c
@@ -1728,6 +1728,12 @@ static const struct of_device_id rzg2l_cpg_match[] = {
 		.data = &r9a07g054_cpg_info,
 	},
 #endif
+#ifdef CONFIG_CLK_R9A08G045
+	{
+		.compatible = "renesas,r9a08g045-cpg",
+		.data = &r9a08g045_cpg_info,
+	},
+#endif
 #ifdef CONFIG_CLK_R9A09G011
 	{
 		.compatible = "renesas,r9a09g011-cpg",
diff --git a/drivers/clk/renesas/rzg2l-cpg.h b/drivers/clk/renesas/rzg2l-cpg.h
index 8312972cc496..7112320f26e2 100644
--- a/drivers/clk/renesas/rzg2l-cpg.h
+++ b/drivers/clk/renesas/rzg2l-cpg.h
@@ -282,6 +282,7 @@ struct rzg2l_cpg_info {
 extern const struct rzg2l_cpg_info r9a07g043_cpg_info;
 extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
 extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
+extern const struct rzg2l_cpg_info r9a08g045_cpg_info;
 extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
 
 int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
-- 
2.39.2


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[PATCH v2 14/28] pinctrl: renesas: rzg2l: index all registers based on port offset

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

To get address that needs to be read/write for specific port
functionalities the P(), PM(), PMC(), PFC(), PIN(), IOLH() IEN(), ISEL()
macros are used. Some of these macros received as argument the hardware
port identifier, some hardware port offset address (e.g. ISEL() received
port identifier, IOLH() received port offset address). This makes hard to
extend the current driver for SoCs were port identifiers are not continuous
in memory map of pin controller. This is the case for RZ/G3S pin controller
were ports are mapped as follows:

port offset    port identifier
-----------    ---------------
0x20           P0
0x21           P5
0x22           P6
0x23           P11
0x24           P12
0x25           P13
0x26           P14
0x27           P15
0x28           P16
0x29           P17
0x2a           P18
0x30           P1
0x31           P2
0x32           P3
0x33           P4
0x34           P7
0x35           P8
0x36           P8
0x37           P10

To make this achievable change all the above macros used to get the address
of a port register for specific port functionality based on port hardware
address. Shortly, all the above macros will get as argument the port
offset address listed in the above table.

With this RZG2L_SINGLE_PIN_GET_PORT_OFFSET(), RZG2L_PIN_ID_TO_PORT_OFFSET()
and RZG2L_GPIO_PORT_GET_INDEX() were replaced by
RZG2L_PIN_CFG_TO_PORT_OFFSET(), RZG2L_SINGLE_PIN_GET_CFGS() and
RZG2L_GPIO_PORT_GET_CFGS() were replaced by RZG2L_PIN_CFG_TO_CAPS().

Also rzg2l_pinctrl_set_pfc_mode() don't need port argument anymore.
Also rzg2l_gpio_direction_input() and rzg2l_gpio_direction_output() don't
need to translate port and bit locally as this can be done by
rzg2l_gpio_set_direction().

To use the same naming for port, bit/pin and register offset the
port_offset variable names in different places was replaced by variable
named off and there is no need to initialize anymore cfg and bit in
different code places.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---

Changes in v2:
- mentioned in commit description about the replacement of
  RZG2L_GPIO_PORT_GET_INDEX() with RZG2L_PIN_CFG_TO_PORT_OFFSET()
- moved variable declaration inside for()
- got rid of local variable and used directly RZG2L_PIN_ID_TO_PORT() in
  debug message from rzg2l_pinctrl_set_mux() function
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 183 ++++++++++++------------
 1 file changed, 95 insertions(+), 88 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 03b36c6b2b6d..96fd829131bd 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -74,8 +74,6 @@
  */
 #define RZG2L_GPIO_PORT_PACK(n, a, f)	(((n) << 28) | ((a) << 20) | (f))
 #define RZG2L_GPIO_PORT_GET_PINCNT(x)	(((x) & GENMASK(30, 28)) >> 28)
-#define RZG2L_GPIO_PORT_GET_INDEX(x)	(((x) & GENMASK(26, 20)) >> 20)
-#define RZG2L_GPIO_PORT_GET_CFGS(x)	((x) & GENMASK(19, 0))
 
 /*
  * BIT(31) indicates dedicated pin, p is the register index while
@@ -85,18 +83,21 @@
 #define RZG2L_SINGLE_PIN		BIT(31)
 #define RZG2L_SINGLE_PIN_PACK(p, b, f)	(RZG2L_SINGLE_PIN | \
 					 ((p) << 24) | ((b) << 20) | (f))
-#define RZG2L_SINGLE_PIN_GET_PORT_OFFSET(x)	(((x) & GENMASK(30, 24)) >> 24)
 #define RZG2L_SINGLE_PIN_GET_BIT(x)	(((x) & GENMASK(22, 20)) >> 20)
-#define RZG2L_SINGLE_PIN_GET_CFGS(x)	((x) & GENMASK(19, 0))
-
-#define P(n)			(0x0000 + 0x10 + (n))
-#define PM(n)			(0x0100 + 0x20 + (n) * 2)
-#define PMC(n)			(0x0200 + 0x10 + (n))
-#define PFC(n)			(0x0400 + 0x40 + (n) * 4)
-#define PIN(n)			(0x0800 + 0x10 + (n))
-#define IOLH(n)			(0x1000 + (n) * 8)
-#define IEN(n)			(0x1800 + (n) * 8)
-#define ISEL(n)			(0x2c80 + (n) * 8)
+
+#define RZG2L_PIN_CFG_TO_CAPS(cfg)		((cfg) & GENMASK(19, 0))
+#define RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg)	((cfg) & RZG2L_SINGLE_PIN ? \
+						(((cfg) & GENMASK(30, 24)) >> 24) : \
+						(((cfg) & GENMASK(26, 20)) >> 20))
+
+#define P(off)			(0x0000 + (off))
+#define PM(off)			(0x0100 + (off) * 2)
+#define PMC(off)		(0x0200 + (off))
+#define PFC(off)		(0x0400 + (off) * 4)
+#define PIN(off)		(0x0800 + (off))
+#define IOLH(off)		(0x1000 + (off) * 8)
+#define IEN(off)		(0x1800 + (off) * 8)
+#define ISEL(off)		(0x2C00 + (off) * 8)
 #define PWPR			(0x3014)
 #define SD_CH(n)		(0x3000 + (n) * 4)
 #define QSPI			(0x3008)
@@ -117,7 +118,6 @@
 #define PM_OUTPUT		0x2
 
 #define RZG2L_PIN_ID_TO_PORT(id)	((id) / RZG2L_PINS_PER_PORT)
-#define RZG2L_PIN_ID_TO_PORT_OFFSET(id)	(RZG2L_PIN_ID_TO_PORT(id) + 0x10)
 #define RZG2L_PIN_ID_TO_PIN(id)		((id) % RZG2L_PINS_PER_PORT)
 
 #define RZG2L_TINT_MAX_INTERRUPT	32
@@ -161,7 +161,7 @@ static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
 static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
 
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
-				       u8 port, u8 pin, u8 func)
+				       u8 pin, u8 off, u8 func)
 {
 	unsigned long flags;
 	u32 reg;
@@ -169,30 +169,30 @@ static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 	spin_lock_irqsave(&pctrl->lock, flags);
 
 	/* Set pin to 'Non-use (Hi-Z input protection)'  */
-	reg = readw(pctrl->base + PM(port));
+	reg = readw(pctrl->base + PM(off));
 	reg &= ~(PM_MASK << (pin * 2));
-	writew(reg, pctrl->base + PM(port));
+	writew(reg, pctrl->base + PM(off));
 
 	/* Temporarily switch to GPIO mode with PMC register */
-	reg = readb(pctrl->base + PMC(port));
-	writeb(reg & ~BIT(pin), pctrl->base + PMC(port));
+	reg = readb(pctrl->base + PMC(off));
+	writeb(reg & ~BIT(pin), pctrl->base + PMC(off));
 
 	/* Set the PWPR register to allow PFC register to write */
 	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
 	writel(PWPR_PFCWE, pctrl->base + PWPR);  /* B0WI=0, PFCWE=1 */
 
 	/* Select Pin function mode with PFC register */
-	reg = readl(pctrl->base + PFC(port));
+	reg = readl(pctrl->base + PFC(off));
 	reg &= ~(PFC_MASK << (pin * 4));
-	writel(reg | (func << (pin * 4)), pctrl->base + PFC(port));
+	writel(reg | (func << (pin * 4)), pctrl->base + PFC(off));
 
 	/* Set the PWPR register to be write-protected */
 	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
 	writel(PWPR_B0WI, pctrl->base + PWPR);  /* B0WI=1, PFCWE=0 */
 
 	/* Switch to Peripheral pin function with PMC register */
-	reg = readb(pctrl->base + PMC(port));
-	writeb(reg | BIT(pin), pctrl->base + PMC(port));
+	reg = readb(pctrl->base + PMC(off));
+	writeb(reg | BIT(pin), pctrl->base + PMC(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 };
@@ -202,9 +202,11 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 				 unsigned int group_selector)
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	const struct pinctrl_pin_desc *pin_desc;
+	unsigned int *psel_val, *pin_data;
 	struct function_desc *func;
-	unsigned int i, *psel_val;
 	struct group_desc *group;
+	u32 pin, off;
 	int *pins;
 
 	func = pinmux_generic_get_function(pctldev, func_selector);
@@ -217,12 +219,17 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 	psel_val = func->data;
 	pins = group->pins;
 
-	for (i = 0; i < group->num_pins; i++) {
-		dev_dbg(pctrl->dev, "port:%u pin: %u PSEL:%u\n",
-			RZG2L_PIN_ID_TO_PORT(pins[i]), RZG2L_PIN_ID_TO_PIN(pins[i]),
-			psel_val[i]);
-		rzg2l_pinctrl_set_pfc_mode(pctrl, RZG2L_PIN_ID_TO_PORT(pins[i]),
-					   RZG2L_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
+	for (unsigned int i = 0; i < group->num_pins; i++) {
+		pin_desc = &pctrl->desc.pins[pins[i]];
+		pin_data = pin_desc->drv_data;
+
+		pin = RZG2L_PIN_ID_TO_PIN(pins[i]);
+		off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+
+		dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
+			RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i]);
+
+		rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i]);
 	}
 
 	return 0;
@@ -468,14 +475,14 @@ static int rzg2l_validate_gpio_pin(struct rzg2l_pinctrl *pctrl,
 				   u32 cfg, u32 port, u8 bit)
 {
 	u8 pincount = RZG2L_GPIO_PORT_GET_PINCNT(cfg);
-	u32 port_index = RZG2L_GPIO_PORT_GET_INDEX(cfg);
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg);
 	u32 data;
 
 	if (bit >= pincount || port >= pctrl->data->n_port_pins)
 		return -EINVAL;
 
 	data = pctrl->data->port_pin_configs[port];
-	if (port_index != RZG2L_GPIO_PORT_GET_INDEX(data))
+	if (off != RZG2L_PIN_CFG_TO_PORT_OFFSET(data))
 		return -EINVAL;
 
 	return 0;
@@ -525,20 +532,17 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 	unsigned int arg = 0;
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port_offset;
-	u32 cfg = 0;
-	u8 bit = 0;
+	u32 off, cfg;
+	u8 bit;
 
 	if (!pin_data)
 		return -EINVAL;
 
+	off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data);
 	if (*pin_data & RZG2L_SINGLE_PIN) {
-		port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data);
-		cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
 		bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
 	} else {
-		cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data);
-		port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin);
 		bit = RZG2L_PIN_ID_TO_PIN(_pin);
 
 		if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
@@ -549,7 +553,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 	case PIN_CONFIG_INPUT_ENABLE:
 		if (!(cfg & PIN_CFG_IEN))
 			return -EINVAL;
-		arg = rzg2l_read_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK);
+		arg = rzg2l_read_pin_config(pctrl, IEN(off), bit, IEN_MASK);
 		if (!arg)
 			return -EINVAL;
 		break;
@@ -579,7 +583,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		if (!(cfg & PIN_CFG_IOLH_A))
 			return -EINVAL;
 
-		index = rzg2l_read_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK);
+		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
 		arg = iolh_groupa_mA[index];
 		break;
 	}
@@ -590,7 +594,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		if (!(cfg & PIN_CFG_IOLH_B))
 			return -EINVAL;
 
-		index = rzg2l_read_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK);
+		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
 		arg = iolh_groupb_oi[index];
 		break;
 	}
@@ -615,21 +619,18 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 	enum pin_config_param param;
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port_offset;
 	unsigned int i;
-	u32 cfg = 0;
-	u8 bit = 0;
+	u32 cfg, off;
+	u8 bit;
 
 	if (!pin_data)
 		return -EINVAL;
 
+	off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data);
 	if (*pin_data & RZG2L_SINGLE_PIN) {
-		port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data);
-		cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
 		bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
 	} else {
-		cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data);
-		port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin);
 		bit = RZG2L_PIN_ID_TO_PIN(_pin);
 
 		if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
@@ -646,7 +647,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IEN))
 				return -EINVAL;
 
-			rzg2l_rmw_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK, !!arg);
+			rzg2l_rmw_pin_config(pctrl, IEN(off), bit, IEN_MASK, !!arg);
 			break;
 		}
 
@@ -687,7 +688,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (index >= ARRAY_SIZE(iolh_groupa_mA))
 				return -EINVAL;
 
-			rzg2l_rmw_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK, index);
+			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
 			break;
 		}
 
@@ -705,7 +706,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (index >= ARRAY_SIZE(iolh_groupb_oi))
 				return -EINVAL;
 
-			rzg2l_rmw_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK, index);
+			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
 			break;
 		}
 
@@ -795,7 +796,9 @@ static const struct pinconf_ops rzg2l_pinctrl_confops = {
 static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	unsigned long flags;
 	u8 reg8;
@@ -808,28 +811,32 @@ static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
 	spin_lock_irqsave(&pctrl->lock, flags);
 
 	/* Select GPIO mode in PMC Register */
-	reg8 = readb(pctrl->base + PMC(port));
+	reg8 = readb(pctrl->base + PMC(off));
 	reg8 &= ~BIT(bit);
-	writeb(reg8, pctrl->base + PMC(port));
+	writeb(reg8, pctrl->base + PMC(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 
 	return 0;
 }
 
-static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 port,
-				     u8 bit, bool output)
+static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 offset,
+				     bool output)
 {
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	unsigned long flags;
 	u16 reg16;
 
 	spin_lock_irqsave(&pctrl->lock, flags);
 
-	reg16 = readw(pctrl->base + PM(port));
+	reg16 = readw(pctrl->base + PM(off));
 	reg16 &= ~(PM_MASK << (bit * 2));
 
 	reg16 |= (output ? PM_OUTPUT : PM_INPUT) << (bit * 2);
-	writew(reg16, pctrl->base + PM(port));
+	writew(reg16, pctrl->base + PM(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
@@ -837,13 +844,15 @@ static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 port,
 static int rzg2l_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 
-	if (!(readb(pctrl->base + PMC(port)) & BIT(bit))) {
+	if (!(readb(pctrl->base + PMC(off)) & BIT(bit))) {
 		u16 reg16;
 
-		reg16 = readw(pctrl->base + PM(port));
+		reg16 = readw(pctrl->base + PM(off));
 		reg16 = (reg16 >> (bit * 2)) & PM_MASK;
 		if (reg16 == PM_OUTPUT)
 			return GPIO_LINE_DIRECTION_OUT;
@@ -856,10 +865,8 @@ static int rzg2l_gpio_direction_input(struct gpio_chip *chip,
 				      unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
-	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 
-	rzg2l_gpio_set_direction(pctrl, port, bit, false);
+	rzg2l_gpio_set_direction(pctrl, offset, false);
 
 	return 0;
 }
@@ -868,19 +875,21 @@ static void rzg2l_gpio_set(struct gpio_chip *chip, unsigned int offset,
 			   int value)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	unsigned long flags;
 	u8 reg8;
 
 	spin_lock_irqsave(&pctrl->lock, flags);
 
-	reg8 = readb(pctrl->base + P(port));
+	reg8 = readb(pctrl->base + P(off));
 
 	if (value)
-		writeb(reg8 | BIT(bit), pctrl->base + P(port));
+		writeb(reg8 | BIT(bit), pctrl->base + P(off));
 	else
-		writeb(reg8 & ~BIT(bit), pctrl->base + P(port));
+		writeb(reg8 & ~BIT(bit), pctrl->base + P(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
@@ -889,11 +898,9 @@ static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
 				       unsigned int offset, int value)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
-	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 
 	rzg2l_gpio_set(chip, offset, value);
-	rzg2l_gpio_set_direction(pctrl, port, bit, true);
+	rzg2l_gpio_set_direction(pctrl, offset, true);
 
 	return 0;
 }
@@ -901,17 +908,19 @@ static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
 static int rzg2l_gpio_get(struct gpio_chip *chip, unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	u16 reg16;
 
-	reg16 = readw(pctrl->base + PM(port));
+	reg16 = readw(pctrl->base + PM(off));
 	reg16 = (reg16 >> (bit * 2)) & PM_MASK;
 
 	if (reg16 == PM_INPUT)
-		return !!(readb(pctrl->base + PIN(port)) & BIT(bit));
+		return !!(readb(pctrl->base + PIN(off)) & BIT(bit));
 	else if (reg16 == PM_OUTPUT)
-		return !!(readb(pctrl->base + P(port)) & BIT(bit));
+		return !!(readb(pctrl->base + P(off)) & BIT(bit));
 	else
 		return -EINVAL;
 }
@@ -1170,17 +1179,16 @@ static void rzg2l_gpio_irq_disable(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
 	unsigned int hwirq = irqd_to_hwirq(d);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[hwirq];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	u8 bit = RZG2L_PIN_ID_TO_PIN(hwirq);
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port;
-	u8 bit;
 
 	irq_chip_disable_parent(d);
 
-	port = RZG2L_PIN_ID_TO_PORT(hwirq);
-	bit = RZG2L_PIN_ID_TO_PIN(hwirq);
-
-	addr = pctrl->base + ISEL(port);
+	addr = pctrl->base + ISEL(off);
 	if (bit >= 4) {
 		bit -= 4;
 		addr += 4;
@@ -1198,17 +1206,16 @@ static void rzg2l_gpio_irq_enable(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
 	unsigned int hwirq = irqd_to_hwirq(d);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[hwirq];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	u8 bit = RZG2L_PIN_ID_TO_PIN(hwirq);
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port;
-	u8 bit;
 
 	gpiochip_enable_irq(gc, hwirq);
 
-	port = RZG2L_PIN_ID_TO_PORT(hwirq);
-	bit = RZG2L_PIN_ID_TO_PIN(hwirq);
-
-	addr = pctrl->base + ISEL(port);
+	addr = pctrl->base + ISEL(off);
 	if (bit >= 4) {
 		bit -= 4;
 		addr += 4;
-- 
2.39.2

[PATCH v2 14/28] pinctrl: renesas: rzg2l: index all registers based on port offset

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

To get address that needs to be read/write for specific port
functionalities the P(), PM(), PMC(), PFC(), PIN(), IOLH() IEN(), ISEL()
macros are used. Some of these macros received as argument the hardware
port identifier, some hardware port offset address (e.g. ISEL() received
port identifier, IOLH() received port offset address). This makes hard to
extend the current driver for SoCs were port identifiers are not continuous
in memory map of pin controller. This is the case for RZ/G3S pin controller
were ports are mapped as follows:

port offset    port identifier
-----------    ---------------
0x20           P0
0x21           P5
0x22           P6
0x23           P11
0x24           P12
0x25           P13
0x26           P14
0x27           P15
0x28           P16
0x29           P17
0x2a           P18
0x30           P1
0x31           P2
0x32           P3
0x33           P4
0x34           P7
0x35           P8
0x36           P8
0x37           P10

To make this achievable change all the above macros used to get the address
of a port register for specific port functionality based on port hardware
address. Shortly, all the above macros will get as argument the port
offset address listed in the above table.

With this RZG2L_SINGLE_PIN_GET_PORT_OFFSET(), RZG2L_PIN_ID_TO_PORT_OFFSET()
and RZG2L_GPIO_PORT_GET_INDEX() were replaced by
RZG2L_PIN_CFG_TO_PORT_OFFSET(), RZG2L_SINGLE_PIN_GET_CFGS() and
RZG2L_GPIO_PORT_GET_CFGS() were replaced by RZG2L_PIN_CFG_TO_CAPS().

Also rzg2l_pinctrl_set_pfc_mode() don't need port argument anymore.
Also rzg2l_gpio_direction_input() and rzg2l_gpio_direction_output() don't
need to translate port and bit locally as this can be done by
rzg2l_gpio_set_direction().

To use the same naming for port, bit/pin and register offset the
port_offset variable names in different places was replaced by variable
named off and there is no need to initialize anymore cfg and bit in
different code places.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---

Changes in v2:
- mentioned in commit description about the replacement of
  RZG2L_GPIO_PORT_GET_INDEX() with RZG2L_PIN_CFG_TO_PORT_OFFSET()
- moved variable declaration inside for()
- got rid of local variable and used directly RZG2L_PIN_ID_TO_PORT() in
  debug message from rzg2l_pinctrl_set_mux() function
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 183 ++++++++++++------------
 1 file changed, 95 insertions(+), 88 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 03b36c6b2b6d..96fd829131bd 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -74,8 +74,6 @@
  */
 #define RZG2L_GPIO_PORT_PACK(n, a, f)	(((n) << 28) | ((a) << 20) | (f))
 #define RZG2L_GPIO_PORT_GET_PINCNT(x)	(((x) & GENMASK(30, 28)) >> 28)
-#define RZG2L_GPIO_PORT_GET_INDEX(x)	(((x) & GENMASK(26, 20)) >> 20)
-#define RZG2L_GPIO_PORT_GET_CFGS(x)	((x) & GENMASK(19, 0))
 
 /*
  * BIT(31) indicates dedicated pin, p is the register index while
@@ -85,18 +83,21 @@
 #define RZG2L_SINGLE_PIN		BIT(31)
 #define RZG2L_SINGLE_PIN_PACK(p, b, f)	(RZG2L_SINGLE_PIN | \
 					 ((p) << 24) | ((b) << 20) | (f))
-#define RZG2L_SINGLE_PIN_GET_PORT_OFFSET(x)	(((x) & GENMASK(30, 24)) >> 24)
 #define RZG2L_SINGLE_PIN_GET_BIT(x)	(((x) & GENMASK(22, 20)) >> 20)
-#define RZG2L_SINGLE_PIN_GET_CFGS(x)	((x) & GENMASK(19, 0))
-
-#define P(n)			(0x0000 + 0x10 + (n))
-#define PM(n)			(0x0100 + 0x20 + (n) * 2)
-#define PMC(n)			(0x0200 + 0x10 + (n))
-#define PFC(n)			(0x0400 + 0x40 + (n) * 4)
-#define PIN(n)			(0x0800 + 0x10 + (n))
-#define IOLH(n)			(0x1000 + (n) * 8)
-#define IEN(n)			(0x1800 + (n) * 8)
-#define ISEL(n)			(0x2c80 + (n) * 8)
+
+#define RZG2L_PIN_CFG_TO_CAPS(cfg)		((cfg) & GENMASK(19, 0))
+#define RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg)	((cfg) & RZG2L_SINGLE_PIN ? \
+						(((cfg) & GENMASK(30, 24)) >> 24) : \
+						(((cfg) & GENMASK(26, 20)) >> 20))
+
+#define P(off)			(0x0000 + (off))
+#define PM(off)			(0x0100 + (off) * 2)
+#define PMC(off)		(0x0200 + (off))
+#define PFC(off)		(0x0400 + (off) * 4)
+#define PIN(off)		(0x0800 + (off))
+#define IOLH(off)		(0x1000 + (off) * 8)
+#define IEN(off)		(0x1800 + (off) * 8)
+#define ISEL(off)		(0x2C00 + (off) * 8)
 #define PWPR			(0x3014)
 #define SD_CH(n)		(0x3000 + (n) * 4)
 #define QSPI			(0x3008)
@@ -117,7 +118,6 @@
 #define PM_OUTPUT		0x2
 
 #define RZG2L_PIN_ID_TO_PORT(id)	((id) / RZG2L_PINS_PER_PORT)
-#define RZG2L_PIN_ID_TO_PORT_OFFSET(id)	(RZG2L_PIN_ID_TO_PORT(id) + 0x10)
 #define RZG2L_PIN_ID_TO_PIN(id)		((id) % RZG2L_PINS_PER_PORT)
 
 #define RZG2L_TINT_MAX_INTERRUPT	32
@@ -161,7 +161,7 @@ static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
 static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
 
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
-				       u8 port, u8 pin, u8 func)
+				       u8 pin, u8 off, u8 func)
 {
 	unsigned long flags;
 	u32 reg;
@@ -169,30 +169,30 @@ static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 	spin_lock_irqsave(&pctrl->lock, flags);
 
 	/* Set pin to 'Non-use (Hi-Z input protection)'  */
-	reg = readw(pctrl->base + PM(port));
+	reg = readw(pctrl->base + PM(off));
 	reg &= ~(PM_MASK << (pin * 2));
-	writew(reg, pctrl->base + PM(port));
+	writew(reg, pctrl->base + PM(off));
 
 	/* Temporarily switch to GPIO mode with PMC register */
-	reg = readb(pctrl->base + PMC(port));
-	writeb(reg & ~BIT(pin), pctrl->base + PMC(port));
+	reg = readb(pctrl->base + PMC(off));
+	writeb(reg & ~BIT(pin), pctrl->base + PMC(off));
 
 	/* Set the PWPR register to allow PFC register to write */
 	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
 	writel(PWPR_PFCWE, pctrl->base + PWPR);  /* B0WI=0, PFCWE=1 */
 
 	/* Select Pin function mode with PFC register */
-	reg = readl(pctrl->base + PFC(port));
+	reg = readl(pctrl->base + PFC(off));
 	reg &= ~(PFC_MASK << (pin * 4));
-	writel(reg | (func << (pin * 4)), pctrl->base + PFC(port));
+	writel(reg | (func << (pin * 4)), pctrl->base + PFC(off));
 
 	/* Set the PWPR register to be write-protected */
 	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
 	writel(PWPR_B0WI, pctrl->base + PWPR);  /* B0WI=1, PFCWE=0 */
 
 	/* Switch to Peripheral pin function with PMC register */
-	reg = readb(pctrl->base + PMC(port));
-	writeb(reg | BIT(pin), pctrl->base + PMC(port));
+	reg = readb(pctrl->base + PMC(off));
+	writeb(reg | BIT(pin), pctrl->base + PMC(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 };
@@ -202,9 +202,11 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 				 unsigned int group_selector)
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	const struct pinctrl_pin_desc *pin_desc;
+	unsigned int *psel_val, *pin_data;
 	struct function_desc *func;
-	unsigned int i, *psel_val;
 	struct group_desc *group;
+	u32 pin, off;
 	int *pins;
 
 	func = pinmux_generic_get_function(pctldev, func_selector);
@@ -217,12 +219,17 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 	psel_val = func->data;
 	pins = group->pins;
 
-	for (i = 0; i < group->num_pins; i++) {
-		dev_dbg(pctrl->dev, "port:%u pin: %u PSEL:%u\n",
-			RZG2L_PIN_ID_TO_PORT(pins[i]), RZG2L_PIN_ID_TO_PIN(pins[i]),
-			psel_val[i]);
-		rzg2l_pinctrl_set_pfc_mode(pctrl, RZG2L_PIN_ID_TO_PORT(pins[i]),
-					   RZG2L_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
+	for (unsigned int i = 0; i < group->num_pins; i++) {
+		pin_desc = &pctrl->desc.pins[pins[i]];
+		pin_data = pin_desc->drv_data;
+
+		pin = RZG2L_PIN_ID_TO_PIN(pins[i]);
+		off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+
+		dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
+			RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i]);
+
+		rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i]);
 	}
 
 	return 0;
@@ -468,14 +475,14 @@ static int rzg2l_validate_gpio_pin(struct rzg2l_pinctrl *pctrl,
 				   u32 cfg, u32 port, u8 bit)
 {
 	u8 pincount = RZG2L_GPIO_PORT_GET_PINCNT(cfg);
-	u32 port_index = RZG2L_GPIO_PORT_GET_INDEX(cfg);
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(cfg);
 	u32 data;
 
 	if (bit >= pincount || port >= pctrl->data->n_port_pins)
 		return -EINVAL;
 
 	data = pctrl->data->port_pin_configs[port];
-	if (port_index != RZG2L_GPIO_PORT_GET_INDEX(data))
+	if (off != RZG2L_PIN_CFG_TO_PORT_OFFSET(data))
 		return -EINVAL;
 
 	return 0;
@@ -525,20 +532,17 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 	unsigned int arg = 0;
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port_offset;
-	u32 cfg = 0;
-	u8 bit = 0;
+	u32 off, cfg;
+	u8 bit;
 
 	if (!pin_data)
 		return -EINVAL;
 
+	off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data);
 	if (*pin_data & RZG2L_SINGLE_PIN) {
-		port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data);
-		cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
 		bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
 	} else {
-		cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data);
-		port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin);
 		bit = RZG2L_PIN_ID_TO_PIN(_pin);
 
 		if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
@@ -549,7 +553,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 	case PIN_CONFIG_INPUT_ENABLE:
 		if (!(cfg & PIN_CFG_IEN))
 			return -EINVAL;
-		arg = rzg2l_read_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK);
+		arg = rzg2l_read_pin_config(pctrl, IEN(off), bit, IEN_MASK);
 		if (!arg)
 			return -EINVAL;
 		break;
@@ -579,7 +583,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		if (!(cfg & PIN_CFG_IOLH_A))
 			return -EINVAL;
 
-		index = rzg2l_read_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK);
+		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
 		arg = iolh_groupa_mA[index];
 		break;
 	}
@@ -590,7 +594,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		if (!(cfg & PIN_CFG_IOLH_B))
 			return -EINVAL;
 
-		index = rzg2l_read_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK);
+		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
 		arg = iolh_groupb_oi[index];
 		break;
 	}
@@ -615,21 +619,18 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 	enum pin_config_param param;
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port_offset;
 	unsigned int i;
-	u32 cfg = 0;
-	u8 bit = 0;
+	u32 cfg, off;
+	u8 bit;
 
 	if (!pin_data)
 		return -EINVAL;
 
+	off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	cfg = RZG2L_PIN_CFG_TO_CAPS(*pin_data);
 	if (*pin_data & RZG2L_SINGLE_PIN) {
-		port_offset = RZG2L_SINGLE_PIN_GET_PORT_OFFSET(*pin_data);
-		cfg = RZG2L_SINGLE_PIN_GET_CFGS(*pin_data);
 		bit = RZG2L_SINGLE_PIN_GET_BIT(*pin_data);
 	} else {
-		cfg = RZG2L_GPIO_PORT_GET_CFGS(*pin_data);
-		port_offset = RZG2L_PIN_ID_TO_PORT_OFFSET(_pin);
 		bit = RZG2L_PIN_ID_TO_PIN(_pin);
 
 		if (rzg2l_validate_gpio_pin(pctrl, *pin_data, RZG2L_PIN_ID_TO_PORT(_pin), bit))
@@ -646,7 +647,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IEN))
 				return -EINVAL;
 
-			rzg2l_rmw_pin_config(pctrl, IEN(port_offset), bit, IEN_MASK, !!arg);
+			rzg2l_rmw_pin_config(pctrl, IEN(off), bit, IEN_MASK, !!arg);
 			break;
 		}
 
@@ -687,7 +688,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (index >= ARRAY_SIZE(iolh_groupa_mA))
 				return -EINVAL;
 
-			rzg2l_rmw_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK, index);
+			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
 			break;
 		}
 
@@ -705,7 +706,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (index >= ARRAY_SIZE(iolh_groupb_oi))
 				return -EINVAL;
 
-			rzg2l_rmw_pin_config(pctrl, IOLH(port_offset), bit, IOLH_MASK, index);
+			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
 			break;
 		}
 
@@ -795,7 +796,9 @@ static const struct pinconf_ops rzg2l_pinctrl_confops = {
 static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	unsigned long flags;
 	u8 reg8;
@@ -808,28 +811,32 @@ static int rzg2l_gpio_request(struct gpio_chip *chip, unsigned int offset)
 	spin_lock_irqsave(&pctrl->lock, flags);
 
 	/* Select GPIO mode in PMC Register */
-	reg8 = readb(pctrl->base + PMC(port));
+	reg8 = readb(pctrl->base + PMC(off));
 	reg8 &= ~BIT(bit);
-	writeb(reg8, pctrl->base + PMC(port));
+	writeb(reg8, pctrl->base + PMC(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 
 	return 0;
 }
 
-static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 port,
-				     u8 bit, bool output)
+static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 offset,
+				     bool output)
 {
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	unsigned long flags;
 	u16 reg16;
 
 	spin_lock_irqsave(&pctrl->lock, flags);
 
-	reg16 = readw(pctrl->base + PM(port));
+	reg16 = readw(pctrl->base + PM(off));
 	reg16 &= ~(PM_MASK << (bit * 2));
 
 	reg16 |= (output ? PM_OUTPUT : PM_INPUT) << (bit * 2);
-	writew(reg16, pctrl->base + PM(port));
+	writew(reg16, pctrl->base + PM(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
@@ -837,13 +844,15 @@ static void rzg2l_gpio_set_direction(struct rzg2l_pinctrl *pctrl, u32 port,
 static int rzg2l_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 
-	if (!(readb(pctrl->base + PMC(port)) & BIT(bit))) {
+	if (!(readb(pctrl->base + PMC(off)) & BIT(bit))) {
 		u16 reg16;
 
-		reg16 = readw(pctrl->base + PM(port));
+		reg16 = readw(pctrl->base + PM(off));
 		reg16 = (reg16 >> (bit * 2)) & PM_MASK;
 		if (reg16 == PM_OUTPUT)
 			return GPIO_LINE_DIRECTION_OUT;
@@ -856,10 +865,8 @@ static int rzg2l_gpio_direction_input(struct gpio_chip *chip,
 				      unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
-	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 
-	rzg2l_gpio_set_direction(pctrl, port, bit, false);
+	rzg2l_gpio_set_direction(pctrl, offset, false);
 
 	return 0;
 }
@@ -868,19 +875,21 @@ static void rzg2l_gpio_set(struct gpio_chip *chip, unsigned int offset,
 			   int value)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	unsigned long flags;
 	u8 reg8;
 
 	spin_lock_irqsave(&pctrl->lock, flags);
 
-	reg8 = readb(pctrl->base + P(port));
+	reg8 = readb(pctrl->base + P(off));
 
 	if (value)
-		writeb(reg8 | BIT(bit), pctrl->base + P(port));
+		writeb(reg8 | BIT(bit), pctrl->base + P(off));
 	else
-		writeb(reg8 & ~BIT(bit), pctrl->base + P(port));
+		writeb(reg8 & ~BIT(bit), pctrl->base + P(off));
 
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
@@ -889,11 +898,9 @@ static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
 				       unsigned int offset, int value)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
-	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 
 	rzg2l_gpio_set(chip, offset, value);
-	rzg2l_gpio_set_direction(pctrl, port, bit, true);
+	rzg2l_gpio_set_direction(pctrl, offset, true);
 
 	return 0;
 }
@@ -901,17 +908,19 @@ static int rzg2l_gpio_direction_output(struct gpio_chip *chip,
 static int rzg2l_gpio_get(struct gpio_chip *chip, unsigned int offset)
 {
 	struct rzg2l_pinctrl *pctrl = gpiochip_get_data(chip);
-	u32 port = RZG2L_PIN_ID_TO_PORT(offset);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[offset];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 	u8 bit = RZG2L_PIN_ID_TO_PIN(offset);
 	u16 reg16;
 
-	reg16 = readw(pctrl->base + PM(port));
+	reg16 = readw(pctrl->base + PM(off));
 	reg16 = (reg16 >> (bit * 2)) & PM_MASK;
 
 	if (reg16 == PM_INPUT)
-		return !!(readb(pctrl->base + PIN(port)) & BIT(bit));
+		return !!(readb(pctrl->base + PIN(off)) & BIT(bit));
 	else if (reg16 == PM_OUTPUT)
-		return !!(readb(pctrl->base + P(port)) & BIT(bit));
+		return !!(readb(pctrl->base + P(off)) & BIT(bit));
 	else
 		return -EINVAL;
 }
@@ -1170,17 +1179,16 @@ static void rzg2l_gpio_irq_disable(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
 	unsigned int hwirq = irqd_to_hwirq(d);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[hwirq];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	u8 bit = RZG2L_PIN_ID_TO_PIN(hwirq);
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port;
-	u8 bit;
 
 	irq_chip_disable_parent(d);
 
-	port = RZG2L_PIN_ID_TO_PORT(hwirq);
-	bit = RZG2L_PIN_ID_TO_PIN(hwirq);
-
-	addr = pctrl->base + ISEL(port);
+	addr = pctrl->base + ISEL(off);
 	if (bit >= 4) {
 		bit -= 4;
 		addr += 4;
@@ -1198,17 +1206,16 @@ static void rzg2l_gpio_irq_enable(struct irq_data *d)
 	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
 	struct rzg2l_pinctrl *pctrl = container_of(gc, struct rzg2l_pinctrl, gpio_chip);
 	unsigned int hwirq = irqd_to_hwirq(d);
+	const struct pinctrl_pin_desc *pin_desc = &pctrl->desc.pins[hwirq];
+	unsigned int *pin_data = pin_desc->drv_data;
+	u32 off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
+	u8 bit = RZG2L_PIN_ID_TO_PIN(hwirq);
 	unsigned long flags;
 	void __iomem *addr;
-	u32 port;
-	u8 bit;
 
 	gpiochip_enable_irq(gc, hwirq);
 
-	port = RZG2L_PIN_ID_TO_PORT(hwirq);
-	bit = RZG2L_PIN_ID_TO_PIN(hwirq);
-
-	addr = pctrl->base + ISEL(port);
+	addr = pctrl->base + ISEL(off);
 	if (bit >= 4) {
 		bit -= 4;
 		addr += 4;
-- 
2.39.2


_______________________________________________
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[PATCH v2 15/28] pinctrl: renesas: rzg2l: adapt for different SD/PWPR register offsets

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

SD, PWPR power registers have different offsets b/w RZ/G2L and RZ/G3S.
Commit adds a per SoC configuration data structure that is initialized with
proper register offset for individual SoCs. The struct rzg2l_hwcfg will be
further extended in next commits.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 52 ++++++++++++++++++++-----
 1 file changed, 42 insertions(+), 10 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 96fd829131bd..7256d99fd552 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -98,8 +98,7 @@
 #define IOLH(off)		(0x1000 + (off) * 8)
 #define IEN(off)		(0x1800 + (off) * 8)
 #define ISEL(off)		(0x2C00 + (off) * 8)
-#define PWPR			(0x3014)
-#define SD_CH(n)		(0x3000 + (n) * 4)
+#define SD_CH(off, ch)		((off) + (ch) * 4)
 #define QSPI			(0x3008)
 
 #define PVDD_1800		1	/* I/O domain voltage <= 1.8V */
@@ -124,6 +123,24 @@
 #define RZG2L_TINT_IRQ_START_INDEX	9
 #define RZG2L_PACK_HWIRQ(t, i)		(((t) << 16) | (i))
 
+/**
+ * struct rzg2l_register_offsets - specific register offsets
+ * @pwpr: PWPR register offset
+ * @sd_ch: SD_CH register offset
+ */
+struct rzg2l_register_offsets {
+	u16 pwpr;
+	u16 sd_ch;
+};
+
+/**
+ * struct rzg2l_hwcfg - hardware configuration data structure
+ * @regs: hardware specific register offsets
+ */
+struct rzg2l_hwcfg {
+	const struct rzg2l_register_offsets regs;
+};
+
 struct rzg2l_dedicated_configs {
 	const char *name;
 	u32 config;
@@ -136,6 +153,7 @@ struct rzg2l_pinctrl_data {
 	const struct rzg2l_dedicated_configs *dedicated_pins;
 	unsigned int n_port_pins;
 	unsigned int n_dedicated_pins;
+	const struct rzg2l_hwcfg *hwcfg;
 };
 
 struct rzg2l_pinctrl {
@@ -163,6 +181,7 @@ static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
+	const struct rzg2l_register_offsets *regs = &pctrl->data->hwcfg->regs;
 	unsigned long flags;
 	u32 reg;
 
@@ -178,8 +197,8 @@ static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 	writeb(reg & ~BIT(pin), pctrl->base + PMC(off));
 
 	/* Set the PWPR register to allow PFC register to write */
-	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
-	writel(PWPR_PFCWE, pctrl->base + PWPR);  /* B0WI=0, PFCWE=1 */
+	writel(0x0, pctrl->base + regs->pwpr);		/* B0WI=0, PFCWE=0 */
+	writel(PWPR_PFCWE, pctrl->base + regs->pwpr);	/* B0WI=0, PFCWE=1 */
 
 	/* Select Pin function mode with PFC register */
 	reg = readl(pctrl->base + PFC(off));
@@ -187,8 +206,8 @@ static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 	writel(reg | (func << (pin * 4)), pctrl->base + PFC(off));
 
 	/* Set the PWPR register to be write-protected */
-	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
-	writel(PWPR_B0WI, pctrl->base + PWPR);  /* B0WI=1, PFCWE=0 */
+	writel(0x0, pctrl->base + regs->pwpr);		/* B0WI=0, PFCWE=0 */
+	writel(PWPR_B0WI, pctrl->base + regs->pwpr);	/* B0WI=1, PFCWE=0 */
 
 	/* Switch to Peripheral pin function with PMC register */
 	reg = readb(pctrl->base + PMC(off));
@@ -527,6 +546,8 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	enum pin_config_param param = pinconf_to_config_param(*config);
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
 	unsigned int *pin_data = pin->drv_data;
 	unsigned int arg = 0;
@@ -562,9 +583,9 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		u32 pwr_reg = 0x0;
 
 		if (cfg & PIN_CFG_IO_VMC_SD0)
-			pwr_reg = SD_CH(0);
+			pwr_reg = SD_CH(regs->sd_ch, 0);
 		else if (cfg & PIN_CFG_IO_VMC_SD1)
-			pwr_reg = SD_CH(1);
+			pwr_reg = SD_CH(regs->sd_ch, 1);
 		else if (cfg & PIN_CFG_IO_VMC_QSPI)
 			pwr_reg = QSPI;
 		else
@@ -616,6 +637,8 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
 	unsigned int *pin_data = pin->drv_data;
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
 	enum pin_config_param param;
 	unsigned long flags;
 	void __iomem *addr;
@@ -659,9 +682,9 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 				return -EINVAL;
 
 			if (cfg & PIN_CFG_IO_VMC_SD0)
-				pwr_reg = SD_CH(0);
+				pwr_reg = SD_CH(regs->sd_ch, 0);
 			else if (cfg & PIN_CFG_IO_VMC_SD1)
-				pwr_reg = SD_CH(1);
+				pwr_reg = SD_CH(regs->sd_ch, 1);
 			else if (cfg & PIN_CFG_IO_VMC_QSPI)
 				pwr_reg = QSPI;
 			else
@@ -1531,6 +1554,13 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct rzg2l_hwcfg rzg2l_hwcfg = {
+	.regs = {
+		.pwpr = 0x3014,
+		.sd_ch = 0x3000,
+	},
+};
+
 static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.port_pins = rzg2l_gpio_names,
 	.port_pin_configs = r9a07g043_gpio_configs,
@@ -1538,6 +1568,7 @@ static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.dedicated_pins = rzg2l_dedicated_pins.common,
 	.n_port_pins = ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT,
 	.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common),
+	.hwcfg = &rzg2l_hwcfg,
 };
 
 static struct rzg2l_pinctrl_data r9a07g044_data = {
@@ -1548,6 +1579,7 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
 	.n_port_pins = ARRAY_SIZE(r9a07g044_gpio_configs) * RZG2L_PINS_PER_PORT,
 	.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common) +
 		ARRAY_SIZE(rzg2l_dedicated_pins.rzg2l_pins),
+	.hwcfg = &rzg2l_hwcfg,
 };
 
 static const struct of_device_id rzg2l_pinctrl_of_table[] = {
-- 
2.39.2

[PATCH v2 15/28] pinctrl: renesas: rzg2l: adapt for different SD/PWPR register offsets

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

SD, PWPR power registers have different offsets b/w RZ/G2L and RZ/G3S.
Commit adds a per SoC configuration data structure that is initialized with
proper register offset for individual SoCs. The struct rzg2l_hwcfg will be
further extended in next commits.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 52 ++++++++++++++++++++-----
 1 file changed, 42 insertions(+), 10 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 96fd829131bd..7256d99fd552 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -98,8 +98,7 @@
 #define IOLH(off)		(0x1000 + (off) * 8)
 #define IEN(off)		(0x1800 + (off) * 8)
 #define ISEL(off)		(0x2C00 + (off) * 8)
-#define PWPR			(0x3014)
-#define SD_CH(n)		(0x3000 + (n) * 4)
+#define SD_CH(off, ch)		((off) + (ch) * 4)
 #define QSPI			(0x3008)
 
 #define PVDD_1800		1	/* I/O domain voltage <= 1.8V */
@@ -124,6 +123,24 @@
 #define RZG2L_TINT_IRQ_START_INDEX	9
 #define RZG2L_PACK_HWIRQ(t, i)		(((t) << 16) | (i))
 
+/**
+ * struct rzg2l_register_offsets - specific register offsets
+ * @pwpr: PWPR register offset
+ * @sd_ch: SD_CH register offset
+ */
+struct rzg2l_register_offsets {
+	u16 pwpr;
+	u16 sd_ch;
+};
+
+/**
+ * struct rzg2l_hwcfg - hardware configuration data structure
+ * @regs: hardware specific register offsets
+ */
+struct rzg2l_hwcfg {
+	const struct rzg2l_register_offsets regs;
+};
+
 struct rzg2l_dedicated_configs {
 	const char *name;
 	u32 config;
@@ -136,6 +153,7 @@ struct rzg2l_pinctrl_data {
 	const struct rzg2l_dedicated_configs *dedicated_pins;
 	unsigned int n_port_pins;
 	unsigned int n_dedicated_pins;
+	const struct rzg2l_hwcfg *hwcfg;
 };
 
 struct rzg2l_pinctrl {
@@ -163,6 +181,7 @@ static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
+	const struct rzg2l_register_offsets *regs = &pctrl->data->hwcfg->regs;
 	unsigned long flags;
 	u32 reg;
 
@@ -178,8 +197,8 @@ static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 	writeb(reg & ~BIT(pin), pctrl->base + PMC(off));
 
 	/* Set the PWPR register to allow PFC register to write */
-	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
-	writel(PWPR_PFCWE, pctrl->base + PWPR);  /* B0WI=0, PFCWE=1 */
+	writel(0x0, pctrl->base + regs->pwpr);		/* B0WI=0, PFCWE=0 */
+	writel(PWPR_PFCWE, pctrl->base + regs->pwpr);	/* B0WI=0, PFCWE=1 */
 
 	/* Select Pin function mode with PFC register */
 	reg = readl(pctrl->base + PFC(off));
@@ -187,8 +206,8 @@ static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 	writel(reg | (func << (pin * 4)), pctrl->base + PFC(off));
 
 	/* Set the PWPR register to be write-protected */
-	writel(0x0, pctrl->base + PWPR);        /* B0WI=0, PFCWE=0 */
-	writel(PWPR_B0WI, pctrl->base + PWPR);  /* B0WI=1, PFCWE=0 */
+	writel(0x0, pctrl->base + regs->pwpr);		/* B0WI=0, PFCWE=0 */
+	writel(PWPR_B0WI, pctrl->base + regs->pwpr);	/* B0WI=1, PFCWE=0 */
 
 	/* Switch to Peripheral pin function with PMC register */
 	reg = readb(pctrl->base + PMC(off));
@@ -527,6 +546,8 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	enum pin_config_param param = pinconf_to_config_param(*config);
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
 	unsigned int *pin_data = pin->drv_data;
 	unsigned int arg = 0;
@@ -562,9 +583,9 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 		u32 pwr_reg = 0x0;
 
 		if (cfg & PIN_CFG_IO_VMC_SD0)
-			pwr_reg = SD_CH(0);
+			pwr_reg = SD_CH(regs->sd_ch, 0);
 		else if (cfg & PIN_CFG_IO_VMC_SD1)
-			pwr_reg = SD_CH(1);
+			pwr_reg = SD_CH(regs->sd_ch, 1);
 		else if (cfg & PIN_CFG_IO_VMC_QSPI)
 			pwr_reg = QSPI;
 		else
@@ -616,6 +637,8 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
 	unsigned int *pin_data = pin->drv_data;
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
 	enum pin_config_param param;
 	unsigned long flags;
 	void __iomem *addr;
@@ -659,9 +682,9 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 				return -EINVAL;
 
 			if (cfg & PIN_CFG_IO_VMC_SD0)
-				pwr_reg = SD_CH(0);
+				pwr_reg = SD_CH(regs->sd_ch, 0);
 			else if (cfg & PIN_CFG_IO_VMC_SD1)
-				pwr_reg = SD_CH(1);
+				pwr_reg = SD_CH(regs->sd_ch, 1);
 			else if (cfg & PIN_CFG_IO_VMC_QSPI)
 				pwr_reg = QSPI;
 			else
@@ -1531,6 +1554,13 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static const struct rzg2l_hwcfg rzg2l_hwcfg = {
+	.regs = {
+		.pwpr = 0x3014,
+		.sd_ch = 0x3000,
+	},
+};
+
 static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.port_pins = rzg2l_gpio_names,
 	.port_pin_configs = r9a07g043_gpio_configs,
@@ -1538,6 +1568,7 @@ static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.dedicated_pins = rzg2l_dedicated_pins.common,
 	.n_port_pins = ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT,
 	.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common),
+	.hwcfg = &rzg2l_hwcfg,
 };
 
 static struct rzg2l_pinctrl_data r9a07g044_data = {
@@ -1548,6 +1579,7 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
 	.n_port_pins = ARRAY_SIZE(r9a07g044_gpio_configs) * RZG2L_PINS_PER_PORT,
 	.n_dedicated_pins = ARRAY_SIZE(rzg2l_dedicated_pins.common) +
 		ARRAY_SIZE(rzg2l_dedicated_pins.rzg2l_pins),
+	.hwcfg = &rzg2l_hwcfg,
 };
 
 static const struct of_device_id rzg2l_pinctrl_of_table[] = {
-- 
2.39.2


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[PATCH v2 16/28] pinctrl: renesas: rzg2l: adapt function number for RZ/G3S

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

On RZ/G3S PFC register allow setting 8 functions for individual ports
(function1 to function8). For function1 register need to be configured
with 0, for function8 register need to be configured with 7.
We cannot use zero based addressing when requesting functions from
different code places as documentation (RZG3S_pinfunction_List_r1.0.xlsx)
states explicitly that function0 is GPIO.

For this add a new member to struct rzg2l_hwcfg that will keep the
offset that need to be substracted before applying a value to PFC register.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- in commit description mentioned that function0 is GPIO
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 7256d99fd552..73d8a84af04a 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -136,9 +136,11 @@ struct rzg2l_register_offsets {
 /**
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
+ * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
+	u8 func_base;
 };
 
 struct rzg2l_dedicated_configs {
@@ -221,6 +223,7 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 				 unsigned int group_selector)
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
 	const struct pinctrl_pin_desc *pin_desc;
 	unsigned int *psel_val, *pin_data;
 	struct function_desc *func;
@@ -246,9 +249,9 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 		off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 
 		dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
-			RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i]);
+			RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i] - hwcfg->func_base);
 
-		rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i]);
+		rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i] - hwcfg->func_base);
 	}
 
 	return 0;
-- 
2.39.2

[PATCH v2 16/28] pinctrl: renesas: rzg2l: adapt function number for RZ/G3S

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

On RZ/G3S PFC register allow setting 8 functions for individual ports
(function1 to function8). For function1 register need to be configured
with 0, for function8 register need to be configured with 7.
We cannot use zero based addressing when requesting functions from
different code places as documentation (RZG3S_pinfunction_List_r1.0.xlsx)
states explicitly that function0 is GPIO.

For this add a new member to struct rzg2l_hwcfg that will keep the
offset that need to be substracted before applying a value to PFC register.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- in commit description mentioned that function0 is GPIO
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 7256d99fd552..73d8a84af04a 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -136,9 +136,11 @@ struct rzg2l_register_offsets {
 /**
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
+ * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
+	u8 func_base;
 };
 
 struct rzg2l_dedicated_configs {
@@ -221,6 +223,7 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 				 unsigned int group_selector)
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
 	const struct pinctrl_pin_desc *pin_desc;
 	unsigned int *psel_val, *pin_data;
 	struct function_desc *func;
@@ -246,9 +249,9 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 		off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);
 
 		dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
-			RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i]);
+			RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i] - hwcfg->func_base);
 
-		rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i]);
+		rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i] - hwcfg->func_base);
 	}
 
 	return 0;
-- 
2.39.2


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[PATCH v2 17/28] pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Move drive strength and output impedance values to SoC specific
configuration data structure (struct rzg2l_hwcfg). This allows extending
the drive strength support for RZ/G3S. Along with this the DS values
were converted to uA for simple integration with RZ/G3S support.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- s/indexes/indices in code documentation
- s/micro amps/uA in code documentation
- added RZG2L_IOLH_MAX_DS_ENTRIES for "+ 4" statements in code
- changed struct rzg2l_hwcfg::iolh_groupb_oi[] size to 4 to avoid
  oversize it in next commits when RZG2L_IOLH_IDX_MAX will be increased
  and thus avoiding issues when executing
  "if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))" in
  rzg2l_pinctrl_pinconf_set()
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 42 ++++++++++++++++++-------
 1 file changed, 31 insertions(+), 11 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 73d8a84af04a..2afc9a34ffa3 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -133,13 +133,30 @@ struct rzg2l_register_offsets {
 	u16 sd_ch;
 };
 
+/**
+ * enum rzg2l_iolh_index - starting indices in IOLH specific arrays
+ * @RZG2L_IOLH_IDX_3V3: starting index for 3V3 power source
+ * @RZG2L_IOLH_IDX_MAX: maximum index
+ */
+enum rzg2l_iolh_index {
+	RZG2L_IOLH_IDX_3V3 = 0,
+	RZG2L_IOLH_IDX_MAX = 4,
+};
+
+/* Maximum number of driver strength entries per power source. */
+#define RZG2L_IOLH_MAX_DS_ENTRIES	(4)
+
 /**
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
+ * @iolh_groupa_ua: IOLH group A uA specific values
+ * @iolh_groupb_oi: IOLH group B output impedance specific values
  * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
+	u16 iolh_groupa_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupb_oi[4];
 	u8 func_base;
 };
 
@@ -177,9 +194,6 @@ struct rzg2l_pinctrl {
 	struct mutex			mutex; /* serialize adding groups and functions */
 };
 
-static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
-static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
-
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
@@ -608,7 +622,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
-		arg = iolh_groupa_mA[index];
+		arg = hwcfg->iolh_groupa_ua[index + RZG2L_IOLH_IDX_3V3] / 1000;
 		break;
 	}
 
@@ -619,7 +633,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
-		arg = iolh_groupb_oi[index];
+		arg = hwcfg->iolh_groupb_oi[index];
 		break;
 	}
 
@@ -707,11 +721,12 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_A))
 				return -EINVAL;
 
-			for (index = 0; index < ARRAY_SIZE(iolh_groupa_mA); index++) {
-				if (arg == iolh_groupa_mA[index])
+			for (index = RZG2L_IOLH_IDX_3V3;
+			     index < RZG2L_IOLH_IDX_3V3 + RZG2L_IOLH_MAX_DS_ENTRIES; index++) {
+				if (arg == (hwcfg->iolh_groupa_ua[index] / 1000))
 					break;
 			}
-			if (index >= ARRAY_SIZE(iolh_groupa_mA))
+			if (index == (RZG2L_IOLH_IDX_3V3 + RZG2L_IOLH_MAX_DS_ENTRIES))
 				return -EINVAL;
 
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
@@ -725,11 +740,11 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_B))
 				return -EINVAL;
 
-			for (index = 0; index < ARRAY_SIZE(iolh_groupb_oi); index++) {
-				if (arg == iolh_groupb_oi[index])
+			for (index = 0; index < ARRAY_SIZE(hwcfg->iolh_groupb_oi); index++) {
+				if (arg == hwcfg->iolh_groupb_oi[index])
 					break;
 			}
-			if (index >= ARRAY_SIZE(iolh_groupb_oi))
+			if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))
 				return -EINVAL;
 
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
@@ -1562,6 +1577,11 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
 		.pwpr = 0x3014,
 		.sd_ch = 0x3000,
 	},
+	.iolh_groupa_ua = {
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 2000, 4000, 8000, 12000,
+	},
+	.iolh_groupb_oi = { 100, 66, 50, 33, },
 };
 
 static struct rzg2l_pinctrl_data r9a07g043_data = {
-- 
2.39.2

[PATCH v2 17/28] pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Move drive strength and output impedance values to SoC specific
configuration data structure (struct rzg2l_hwcfg). This allows extending
the drive strength support for RZ/G3S. Along with this the DS values
were converted to uA for simple integration with RZ/G3S support.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- s/indexes/indices in code documentation
- s/micro amps/uA in code documentation
- added RZG2L_IOLH_MAX_DS_ENTRIES for "+ 4" statements in code
- changed struct rzg2l_hwcfg::iolh_groupb_oi[] size to 4 to avoid
  oversize it in next commits when RZG2L_IOLH_IDX_MAX will be increased
  and thus avoiding issues when executing
  "if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))" in
  rzg2l_pinctrl_pinconf_set()
- collected tags

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 42 ++++++++++++++++++-------
 1 file changed, 31 insertions(+), 11 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 73d8a84af04a..2afc9a34ffa3 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -133,13 +133,30 @@ struct rzg2l_register_offsets {
 	u16 sd_ch;
 };
 
+/**
+ * enum rzg2l_iolh_index - starting indices in IOLH specific arrays
+ * @RZG2L_IOLH_IDX_3V3: starting index for 3V3 power source
+ * @RZG2L_IOLH_IDX_MAX: maximum index
+ */
+enum rzg2l_iolh_index {
+	RZG2L_IOLH_IDX_3V3 = 0,
+	RZG2L_IOLH_IDX_MAX = 4,
+};
+
+/* Maximum number of driver strength entries per power source. */
+#define RZG2L_IOLH_MAX_DS_ENTRIES	(4)
+
 /**
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
+ * @iolh_groupa_ua: IOLH group A uA specific values
+ * @iolh_groupb_oi: IOLH group B output impedance specific values
  * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
+	u16 iolh_groupa_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupb_oi[4];
 	u8 func_base;
 };
 
@@ -177,9 +194,6 @@ struct rzg2l_pinctrl {
 	struct mutex			mutex; /* serialize adding groups and functions */
 };
 
-static const unsigned int iolh_groupa_mA[] = { 2, 4, 8, 12 };
-static const unsigned int iolh_groupb_oi[] = { 100, 66, 50, 33 };
-
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
@@ -608,7 +622,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
-		arg = iolh_groupa_mA[index];
+		arg = hwcfg->iolh_groupa_ua[index + RZG2L_IOLH_IDX_3V3] / 1000;
 		break;
 	}
 
@@ -619,7 +633,7 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
-		arg = iolh_groupb_oi[index];
+		arg = hwcfg->iolh_groupb_oi[index];
 		break;
 	}
 
@@ -707,11 +721,12 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_A))
 				return -EINVAL;
 
-			for (index = 0; index < ARRAY_SIZE(iolh_groupa_mA); index++) {
-				if (arg == iolh_groupa_mA[index])
+			for (index = RZG2L_IOLH_IDX_3V3;
+			     index < RZG2L_IOLH_IDX_3V3 + RZG2L_IOLH_MAX_DS_ENTRIES; index++) {
+				if (arg == (hwcfg->iolh_groupa_ua[index] / 1000))
 					break;
 			}
-			if (index >= ARRAY_SIZE(iolh_groupa_mA))
+			if (index == (RZG2L_IOLH_IDX_3V3 + RZG2L_IOLH_MAX_DS_ENTRIES))
 				return -EINVAL;
 
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
@@ -725,11 +740,11 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			if (!(cfg & PIN_CFG_IOLH_B))
 				return -EINVAL;
 
-			for (index = 0; index < ARRAY_SIZE(iolh_groupb_oi); index++) {
-				if (arg == iolh_groupb_oi[index])
+			for (index = 0; index < ARRAY_SIZE(hwcfg->iolh_groupb_oi); index++) {
+				if (arg == hwcfg->iolh_groupb_oi[index])
 					break;
 			}
-			if (index >= ARRAY_SIZE(iolh_groupb_oi))
+			if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))
 				return -EINVAL;
 
 			rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, index);
@@ -1562,6 +1577,11 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
 		.pwpr = 0x3014,
 		.sd_ch = 0x3000,
 	},
+	.iolh_groupa_ua = {
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 2000, 4000, 8000, 12000,
+	},
+	.iolh_groupb_oi = { 100, 66, 50, 33, },
 };
 
 static struct rzg2l_pinctrl_data r9a07g043_data = {
-- 
2.39.2


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[PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

RZ/G3S supports different drive strength values for different power sources
and pin groups (A, B, C). On each group there could be up to 4 drive
strength values per power source. Available power sources are 1v8, 2v5,
3v3. Drive strength values are fine tuned than what was previously
available on the driver thus the necessity of having micro-amp support.
As drive strength and power source values are linked together the
hardware setup for these was moved at the end of
rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
values.

The drive strength values are expected to be initialized though SoC
specific hardware configuration data structure.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- s/strenght/strength, s/togheter/together in commit description
- got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
  value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
- removed spinlock in rzg2l_[sg]et_power_source()
- introduced caps_to_pwr_reg() and simplified the code in
  rzg2l_[sg]et_power_source()
- changed return type of rzg2l_iolh_ua_to_val() to int and return
  -EINVAL on failure cases
- s/rzg2l_ds_supported/rzg2l_ds_is_supported
- inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
  strength and power source to hardware registers and thus simplified the
  code
- used devm_kcalloc() instead of devm_kzalloc()
- adderessed the rest of the review comments

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 323 ++++++++++++++++++++----
 1 file changed, 272 insertions(+), 51 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 2afc9a34ffa3..8b74838510ad 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -55,6 +55,8 @@
 #define PIN_CFG_FILONOFF		BIT(10)
 #define PIN_CFG_FILNUM			BIT(11)
 #define PIN_CFG_FILCLKSEL		BIT(12)
+#define PIN_CFG_IOLH_C			BIT(13)
+#define PIN_CFG_SOFT_PS			BIT(14)
 
 #define RZG2L_MPXED_PIN_FUNCS		(PIN_CFG_IOLH_A | \
 					 PIN_CFG_SR | \
@@ -135,12 +137,16 @@ struct rzg2l_register_offsets {
 
 /**
  * enum rzg2l_iolh_index - starting indices in IOLH specific arrays
+ * @RZG2L_IOLH_IDX_1V8: starting index for 1V8 power source
+ * @RZG2L_IOLH_IDX_2V5: starting index for 2V5 power source
  * @RZG2L_IOLH_IDX_3V3: starting index for 3V3 power source
  * @RZG2L_IOLH_IDX_MAX: maximum index
  */
 enum rzg2l_iolh_index {
-	RZG2L_IOLH_IDX_3V3 = 0,
-	RZG2L_IOLH_IDX_MAX = 4,
+	RZG2L_IOLH_IDX_1V8 = 0,
+	RZG2L_IOLH_IDX_2V5 = 4,
+	RZG2L_IOLH_IDX_3V3 = 8,
+	RZG2L_IOLH_IDX_MAX = 12,
 };
 
 /* Maximum number of driver strength entries per power source. */
@@ -150,13 +156,19 @@ enum rzg2l_iolh_index {
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
  * @iolh_groupa_ua: IOLH group A uA specific values
+ * @iolh_groupb_ua: IOLH group B uA specific values
+ * @iolh_groupc_ua: IOLH group C uA specific values
  * @iolh_groupb_oi: IOLH group B output impedance specific values
+ * @drive_strength_ua: drive strength in uA is supported (otherwise mA is supported)
  * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
 	u16 iolh_groupa_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupb_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupc_ua[RZG2L_IOLH_IDX_MAX];
 	u16 iolh_groupb_oi[4];
+	bool drive_strength_ua;
 	u8 func_base;
 };
 
@@ -175,6 +187,16 @@ struct rzg2l_pinctrl_data {
 	const struct rzg2l_hwcfg *hwcfg;
 };
 
+/**
+ * struct rzg2l_pinctrl_pin_settings - pin data
+ * @power_source: power source
+ * @drive_strength_ua: drive strength (in micro amps)
+ */
+struct rzg2l_pinctrl_pin_settings {
+	u16 power_source;
+	u16 drive_strength_ua;
+};
+
 struct rzg2l_pinctrl {
 	struct pinctrl_dev		*pctl;
 	struct pinctrl_desc		desc;
@@ -192,8 +214,12 @@ struct rzg2l_pinctrl {
 
 	spinlock_t			lock; /* lock read/write registers */
 	struct mutex			mutex; /* serialize adding groups and functions */
+
+	struct rzg2l_pinctrl_pin_settings *settings;
 };
 
+static const u16 available_ps[] = { 1800, 2500, 3300 };
+
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
@@ -557,6 +583,156 @@ static void rzg2l_rmw_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset,
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
 
+static int rzg2l_caps_to_pwr_reg(const struct rzg2l_register_offsets *regs, u32 caps)
+{
+	if (caps & PIN_CFG_IO_VMC_SD0)
+		return SD_CH(regs->sd_ch, 0);
+	if (caps & PIN_CFG_IO_VMC_SD1)
+		return SD_CH(regs->sd_ch, 1);
+	if (caps & PIN_CFG_IO_VMC_QSPI)
+		return QSPI;
+
+	return -EINVAL;
+}
+
+static int rzg2l_get_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps)
+{
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
+	int pwr_reg;
+
+	if (caps & PIN_CFG_SOFT_PS)
+		return pctrl->settings[pin].power_source;
+
+	pwr_reg = rzg2l_caps_to_pwr_reg(regs, caps);
+	if (pwr_reg == -EINVAL)
+		return -EINVAL;
+
+	return (readl(pctrl->base + pwr_reg) & PVDD_MASK) ? 1800 : 3300;
+}
+
+static int rzg2l_set_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps, u32 ps)
+{
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
+	int pwr_reg;
+
+	if (caps & PIN_CFG_SOFT_PS) {
+		pctrl->settings[pin].power_source = ps;
+		return 0;
+	}
+
+	pwr_reg = rzg2l_caps_to_pwr_reg(regs, caps);
+	if (pwr_reg == -EINVAL)
+		return -EINVAL;
+
+	writel((ps == 1800) ? PVDD_1800 : PVDD_3300, pctrl->base + pwr_reg);
+	pctrl->settings[pin].power_source = ps;
+
+	return 0;
+}
+
+static bool rzg2l_ps_is_supported(u16 ps)
+{
+	u8 i;
+
+	for (i = 0; i < ARRAY_SIZE(available_ps); i++) {
+		if (available_ps[i] == ps)
+			return true;
+	}
+
+	return false;
+}
+
+static enum rzg2l_iolh_index rzg2l_ps_to_iolh_idx(u16 ps)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(available_ps); i++) {
+		if (available_ps[i] == ps)
+			break;
+	}
+
+	/*
+	 * We multiply with RZG2L_IOLH_MAX_DS_ENTRIES as we have
+	 * RZG2L_IOLH_MAX_DS_ENTRIES DS values per power source
+	 */
+	return i * RZG2L_IOLH_MAX_DS_ENTRIES;
+}
+
+static u16 rzg2l_iolh_val_to_ua(const struct rzg2l_hwcfg *hwcfg, u32 caps, u8 val)
+{
+	if (caps & PIN_CFG_IOLH_A)
+		return hwcfg->iolh_groupa_ua[val];
+
+	if (caps & PIN_CFG_IOLH_B)
+		return hwcfg->iolh_groupb_ua[val];
+
+	if (caps & PIN_CFG_IOLH_C)
+		return hwcfg->iolh_groupc_ua[val];
+
+	/* Should not happen. */
+	return 0;
+}
+
+static int rzg2l_iolh_ua_to_val(const struct rzg2l_hwcfg *hwcfg, u32 caps,
+				enum rzg2l_iolh_index ps_index, u16 ua)
+{
+	const u16 *array = NULL;
+	u16 i;
+
+	if (caps & PIN_CFG_IOLH_A)
+		array = &hwcfg->iolh_groupa_ua[ps_index];
+
+	if (caps & PIN_CFG_IOLH_B)
+		array = &hwcfg->iolh_groupb_ua[ps_index];
+
+	if (caps & PIN_CFG_IOLH_C)
+		array = &hwcfg->iolh_groupc_ua[ps_index];
+
+	if (!array)
+		return -EINVAL;
+
+	for (i = 0; i < RZG2L_IOLH_MAX_DS_ENTRIES; i++) {
+		if (array[i] == ua)
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+static bool rzg2l_ds_is_supported(struct rzg2l_pinctrl *pctrl, u32 caps,
+				  enum rzg2l_iolh_index iolh_idx,
+				  u16 ds)
+{
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const u16 *array = NULL;
+	u16 i;
+
+	if (caps & PIN_CFG_IOLH_A)
+		array = hwcfg->iolh_groupa_ua;
+
+	if (caps & PIN_CFG_IOLH_B)
+		array = hwcfg->iolh_groupb_ua;
+
+	if (caps & PIN_CFG_IOLH_C)
+		array = hwcfg->iolh_groupc_ua;
+
+	/* Should not happen. */
+	if (!array)
+		return false;
+
+	if (!array[iolh_idx])
+		return false;
+
+	for (i = 0; i < RZG2L_IOLH_MAX_DS_ENTRIES; i++) {
+		if (array[iolh_idx + i] == ds)
+			return true;
+	}
+
+	return false;
+}
+
 static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 				     unsigned int _pin,
 				     unsigned long *config)
@@ -564,13 +740,11 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	enum pin_config_param param = pinconf_to_config_param(*config);
 	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
-	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
 	unsigned int *pin_data = pin->drv_data;
 	unsigned int arg = 0;
-	unsigned long flags;
-	void __iomem *addr;
 	u32 off, cfg;
+	int ret;
 	u8 bit;
 
 	if (!pin_data)
@@ -596,40 +770,49 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 		break;
 
-	case PIN_CONFIG_POWER_SOURCE: {
-		u32 pwr_reg = 0x0;
-
-		if (cfg & PIN_CFG_IO_VMC_SD0)
-			pwr_reg = SD_CH(regs->sd_ch, 0);
-		else if (cfg & PIN_CFG_IO_VMC_SD1)
-			pwr_reg = SD_CH(regs->sd_ch, 1);
-		else if (cfg & PIN_CFG_IO_VMC_QSPI)
-			pwr_reg = QSPI;
-		else
-			return -EINVAL;
-
-		spin_lock_irqsave(&pctrl->lock, flags);
-		addr = pctrl->base + pwr_reg;
-		arg = (readl(addr) & PVDD_MASK) ? 1800 : 3300;
-		spin_unlock_irqrestore(&pctrl->lock, flags);
+	case PIN_CONFIG_POWER_SOURCE:
+		ret = rzg2l_get_power_source(pctrl, _pin, cfg);
+		if (ret < 0)
+			return ret;
+		arg = ret;
 		break;
-	}
 
 	case PIN_CONFIG_DRIVE_STRENGTH: {
 		unsigned int index;
 
-		if (!(cfg & PIN_CFG_IOLH_A))
+		if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
+		/*
+		 * Drive strenght mA is supported only by group A and only
+		 * for 3V3 port source.
+		 */
 		arg = hwcfg->iolh_groupa_ua[index + RZG2L_IOLH_IDX_3V3] / 1000;
 		break;
 	}
 
+	case PIN_CONFIG_DRIVE_STRENGTH_UA: {
+		enum rzg2l_iolh_index iolh_idx;
+		u8 val;
+
+		if (!(cfg & (PIN_CFG_IOLH_A | PIN_CFG_IOLH_B | PIN_CFG_IOLH_C)) ||
+		    !hwcfg->drive_strength_ua)
+			return -EINVAL;
+
+		ret = rzg2l_get_power_source(pctrl, _pin, cfg);
+		if (ret < 0)
+			return ret;
+		iolh_idx = rzg2l_ps_to_iolh_idx(ret);
+		val = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
+		arg = rzg2l_iolh_val_to_ua(hwcfg, cfg, iolh_idx + val);
+		break;
+	}
+
 	case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
 		unsigned int index;
 
-		if (!(cfg & PIN_CFG_IOLH_B))
+		if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
@@ -653,14 +836,13 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
-	unsigned int *pin_data = pin->drv_data;
 	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
-	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
+	struct rzg2l_pinctrl_pin_settings settings = pctrl->settings[_pin];
+	unsigned int *pin_data = pin->drv_data;
 	enum pin_config_param param;
-	unsigned long flags;
-	void __iomem *addr;
 	unsigned int i;
 	u32 cfg, off;
+	int ret;
 	u8 bit;
 
 	if (!pin_data)
@@ -691,34 +873,15 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 		}
 
-		case PIN_CONFIG_POWER_SOURCE: {
-			unsigned int mV = pinconf_to_config_argument(_configs[i]);
-			u32 pwr_reg = 0x0;
-
-			if (mV != 1800 && mV != 3300)
-				return -EINVAL;
-
-			if (cfg & PIN_CFG_IO_VMC_SD0)
-				pwr_reg = SD_CH(regs->sd_ch, 0);
-			else if (cfg & PIN_CFG_IO_VMC_SD1)
-				pwr_reg = SD_CH(regs->sd_ch, 1);
-			else if (cfg & PIN_CFG_IO_VMC_QSPI)
-				pwr_reg = QSPI;
-			else
-				return -EINVAL;
-
-			addr = pctrl->base + pwr_reg;
-			spin_lock_irqsave(&pctrl->lock, flags);
-			writel((mV == 1800) ? PVDD_1800 : PVDD_3300, addr);
-			spin_unlock_irqrestore(&pctrl->lock, flags);
+		case PIN_CONFIG_POWER_SOURCE:
+			settings.power_source = pinconf_to_config_argument(_configs[i]);
 			break;
-		}
 
 		case PIN_CONFIG_DRIVE_STRENGTH: {
 			unsigned int arg = pinconf_to_config_argument(_configs[i]);
 			unsigned int index;
 
-			if (!(cfg & PIN_CFG_IOLH_A))
+			if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
 				return -EINVAL;
 
 			for (index = RZG2L_IOLH_IDX_3V3;
@@ -733,11 +896,19 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 		}
 
+		case PIN_CONFIG_DRIVE_STRENGTH_UA:
+			if (!(cfg & (PIN_CFG_IOLH_A | PIN_CFG_IOLH_B | PIN_CFG_IOLH_C)) ||
+			    !hwcfg->drive_strength_ua)
+				return -EINVAL;
+
+			settings.drive_strength_ua = pinconf_to_config_argument(_configs[i]);
+			break;
+
 		case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
 			unsigned int arg = pinconf_to_config_argument(_configs[i]);
 			unsigned int index;
 
-			if (!(cfg & PIN_CFG_IOLH_B))
+			if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
 				return -EINVAL;
 
 			for (index = 0; index < ARRAY_SIZE(hwcfg->iolh_groupb_oi); index++) {
@@ -756,6 +927,39 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 		}
 	}
 
+	/* Apply power source. */
+	if (settings.power_source != pctrl->settings[_pin].power_source) {
+		ret = rzg2l_ps_is_supported(settings.power_source);
+		if (!ret)
+			return -EINVAL;
+
+		/* Apply power source. */
+		ret = rzg2l_set_power_source(pctrl, _pin, cfg, settings.power_source);
+		if (ret)
+			return ret;
+	}
+
+	/* Apply drive strength. */
+	if (settings.drive_strength_ua != pctrl->settings[_pin].drive_strength_ua) {
+		enum rzg2l_iolh_index iolh_idx;
+		int val;
+
+		iolh_idx = rzg2l_ps_to_iolh_idx(settings.power_source);
+		ret = rzg2l_ds_is_supported(pctrl, cfg, iolh_idx,
+					    settings.drive_strength_ua);
+		if (!ret)
+			return -EINVAL;
+
+		/* Get register value for this PS/DS tuple. */
+		val = rzg2l_iolh_ua_to_val(hwcfg, cfg, iolh_idx, settings.drive_strength_ua);
+		if (val == -EINVAL)
+			return -EINVAL;
+
+		/* Apply drive strength. */
+		rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, val);
+		pctrl->settings[_pin].drive_strength_ua = settings.drive_strength_ua;
+	}
+
 	return 0;
 }
 
@@ -1463,6 +1667,7 @@ static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
 
 static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
 {
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
 	struct pinctrl_pin_desc *pins;
 	unsigned int i, j;
 	u32 *pin_data;
@@ -1505,6 +1710,22 @@ static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
 		pins[index].drv_data = &pin_data[index];
 	}
 
+	pctrl->settings = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pctrl->settings),
+				       GFP_KERNEL);
+	if (!pctrl->settings)
+		return -ENOMEM;
+
+	for (i = 0; hwcfg->drive_strength_ua && i < pctrl->desc.npins; i++) {
+		if (pin_data[i] & PIN_CFG_SOFT_PS) {
+			pctrl->settings[i].power_source = 3300;
+		} else {
+			ret = rzg2l_get_power_source(pctrl, i, pin_data[i]);
+			if (ret < 0)
+				continue;
+			pctrl->settings[i].power_source = ret;
+		}
+	}
+
 	ret = devm_pinctrl_register_and_init(pctrl->dev, &pctrl->desc, pctrl,
 					     &pctrl->pctl);
 	if (ret) {
-- 
2.39.2

[PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

RZ/G3S supports different drive strength values for different power sources
and pin groups (A, B, C). On each group there could be up to 4 drive
strength values per power source. Available power sources are 1v8, 2v5,
3v3. Drive strength values are fine tuned than what was previously
available on the driver thus the necessity of having micro-amp support.
As drive strength and power source values are linked together the
hardware setup for these was moved at the end of
rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
values.

The drive strength values are expected to be initialized though SoC
specific hardware configuration data structure.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- s/strenght/strength, s/togheter/together in commit description
- got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
  value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
- removed spinlock in rzg2l_[sg]et_power_source()
- introduced caps_to_pwr_reg() and simplified the code in
  rzg2l_[sg]et_power_source()
- changed return type of rzg2l_iolh_ua_to_val() to int and return
  -EINVAL on failure cases
- s/rzg2l_ds_supported/rzg2l_ds_is_supported
- inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
  strength and power source to hardware registers and thus simplified the
  code
- used devm_kcalloc() instead of devm_kzalloc()
- adderessed the rest of the review comments

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 323 ++++++++++++++++++++----
 1 file changed, 272 insertions(+), 51 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 2afc9a34ffa3..8b74838510ad 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -55,6 +55,8 @@
 #define PIN_CFG_FILONOFF		BIT(10)
 #define PIN_CFG_FILNUM			BIT(11)
 #define PIN_CFG_FILCLKSEL		BIT(12)
+#define PIN_CFG_IOLH_C			BIT(13)
+#define PIN_CFG_SOFT_PS			BIT(14)
 
 #define RZG2L_MPXED_PIN_FUNCS		(PIN_CFG_IOLH_A | \
 					 PIN_CFG_SR | \
@@ -135,12 +137,16 @@ struct rzg2l_register_offsets {
 
 /**
  * enum rzg2l_iolh_index - starting indices in IOLH specific arrays
+ * @RZG2L_IOLH_IDX_1V8: starting index for 1V8 power source
+ * @RZG2L_IOLH_IDX_2V5: starting index for 2V5 power source
  * @RZG2L_IOLH_IDX_3V3: starting index for 3V3 power source
  * @RZG2L_IOLH_IDX_MAX: maximum index
  */
 enum rzg2l_iolh_index {
-	RZG2L_IOLH_IDX_3V3 = 0,
-	RZG2L_IOLH_IDX_MAX = 4,
+	RZG2L_IOLH_IDX_1V8 = 0,
+	RZG2L_IOLH_IDX_2V5 = 4,
+	RZG2L_IOLH_IDX_3V3 = 8,
+	RZG2L_IOLH_IDX_MAX = 12,
 };
 
 /* Maximum number of driver strength entries per power source. */
@@ -150,13 +156,19 @@ enum rzg2l_iolh_index {
  * struct rzg2l_hwcfg - hardware configuration data structure
  * @regs: hardware specific register offsets
  * @iolh_groupa_ua: IOLH group A uA specific values
+ * @iolh_groupb_ua: IOLH group B uA specific values
+ * @iolh_groupc_ua: IOLH group C uA specific values
  * @iolh_groupb_oi: IOLH group B output impedance specific values
+ * @drive_strength_ua: drive strength in uA is supported (otherwise mA is supported)
  * @func_base: base number for port function (see register PFC)
  */
 struct rzg2l_hwcfg {
 	const struct rzg2l_register_offsets regs;
 	u16 iolh_groupa_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupb_ua[RZG2L_IOLH_IDX_MAX];
+	u16 iolh_groupc_ua[RZG2L_IOLH_IDX_MAX];
 	u16 iolh_groupb_oi[4];
+	bool drive_strength_ua;
 	u8 func_base;
 };
 
@@ -175,6 +187,16 @@ struct rzg2l_pinctrl_data {
 	const struct rzg2l_hwcfg *hwcfg;
 };
 
+/**
+ * struct rzg2l_pinctrl_pin_settings - pin data
+ * @power_source: power source
+ * @drive_strength_ua: drive strength (in micro amps)
+ */
+struct rzg2l_pinctrl_pin_settings {
+	u16 power_source;
+	u16 drive_strength_ua;
+};
+
 struct rzg2l_pinctrl {
 	struct pinctrl_dev		*pctl;
 	struct pinctrl_desc		desc;
@@ -192,8 +214,12 @@ struct rzg2l_pinctrl {
 
 	spinlock_t			lock; /* lock read/write registers */
 	struct mutex			mutex; /* serialize adding groups and functions */
+
+	struct rzg2l_pinctrl_pin_settings *settings;
 };
 
+static const u16 available_ps[] = { 1800, 2500, 3300 };
+
 static void rzg2l_pinctrl_set_pfc_mode(struct rzg2l_pinctrl *pctrl,
 				       u8 pin, u8 off, u8 func)
 {
@@ -557,6 +583,156 @@ static void rzg2l_rmw_pin_config(struct rzg2l_pinctrl *pctrl, u32 offset,
 	spin_unlock_irqrestore(&pctrl->lock, flags);
 }
 
+static int rzg2l_caps_to_pwr_reg(const struct rzg2l_register_offsets *regs, u32 caps)
+{
+	if (caps & PIN_CFG_IO_VMC_SD0)
+		return SD_CH(regs->sd_ch, 0);
+	if (caps & PIN_CFG_IO_VMC_SD1)
+		return SD_CH(regs->sd_ch, 1);
+	if (caps & PIN_CFG_IO_VMC_QSPI)
+		return QSPI;
+
+	return -EINVAL;
+}
+
+static int rzg2l_get_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps)
+{
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
+	int pwr_reg;
+
+	if (caps & PIN_CFG_SOFT_PS)
+		return pctrl->settings[pin].power_source;
+
+	pwr_reg = rzg2l_caps_to_pwr_reg(regs, caps);
+	if (pwr_reg == -EINVAL)
+		return -EINVAL;
+
+	return (readl(pctrl->base + pwr_reg) & PVDD_MASK) ? 1800 : 3300;
+}
+
+static int rzg2l_set_power_source(struct rzg2l_pinctrl *pctrl, u32 pin, u32 caps, u32 ps)
+{
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
+	int pwr_reg;
+
+	if (caps & PIN_CFG_SOFT_PS) {
+		pctrl->settings[pin].power_source = ps;
+		return 0;
+	}
+
+	pwr_reg = rzg2l_caps_to_pwr_reg(regs, caps);
+	if (pwr_reg == -EINVAL)
+		return -EINVAL;
+
+	writel((ps == 1800) ? PVDD_1800 : PVDD_3300, pctrl->base + pwr_reg);
+	pctrl->settings[pin].power_source = ps;
+
+	return 0;
+}
+
+static bool rzg2l_ps_is_supported(u16 ps)
+{
+	u8 i;
+
+	for (i = 0; i < ARRAY_SIZE(available_ps); i++) {
+		if (available_ps[i] == ps)
+			return true;
+	}
+
+	return false;
+}
+
+static enum rzg2l_iolh_index rzg2l_ps_to_iolh_idx(u16 ps)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(available_ps); i++) {
+		if (available_ps[i] == ps)
+			break;
+	}
+
+	/*
+	 * We multiply with RZG2L_IOLH_MAX_DS_ENTRIES as we have
+	 * RZG2L_IOLH_MAX_DS_ENTRIES DS values per power source
+	 */
+	return i * RZG2L_IOLH_MAX_DS_ENTRIES;
+}
+
+static u16 rzg2l_iolh_val_to_ua(const struct rzg2l_hwcfg *hwcfg, u32 caps, u8 val)
+{
+	if (caps & PIN_CFG_IOLH_A)
+		return hwcfg->iolh_groupa_ua[val];
+
+	if (caps & PIN_CFG_IOLH_B)
+		return hwcfg->iolh_groupb_ua[val];
+
+	if (caps & PIN_CFG_IOLH_C)
+		return hwcfg->iolh_groupc_ua[val];
+
+	/* Should not happen. */
+	return 0;
+}
+
+static int rzg2l_iolh_ua_to_val(const struct rzg2l_hwcfg *hwcfg, u32 caps,
+				enum rzg2l_iolh_index ps_index, u16 ua)
+{
+	const u16 *array = NULL;
+	u16 i;
+
+	if (caps & PIN_CFG_IOLH_A)
+		array = &hwcfg->iolh_groupa_ua[ps_index];
+
+	if (caps & PIN_CFG_IOLH_B)
+		array = &hwcfg->iolh_groupb_ua[ps_index];
+
+	if (caps & PIN_CFG_IOLH_C)
+		array = &hwcfg->iolh_groupc_ua[ps_index];
+
+	if (!array)
+		return -EINVAL;
+
+	for (i = 0; i < RZG2L_IOLH_MAX_DS_ENTRIES; i++) {
+		if (array[i] == ua)
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+static bool rzg2l_ds_is_supported(struct rzg2l_pinctrl *pctrl, u32 caps,
+				  enum rzg2l_iolh_index iolh_idx,
+				  u16 ds)
+{
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
+	const u16 *array = NULL;
+	u16 i;
+
+	if (caps & PIN_CFG_IOLH_A)
+		array = hwcfg->iolh_groupa_ua;
+
+	if (caps & PIN_CFG_IOLH_B)
+		array = hwcfg->iolh_groupb_ua;
+
+	if (caps & PIN_CFG_IOLH_C)
+		array = hwcfg->iolh_groupc_ua;
+
+	/* Should not happen. */
+	if (!array)
+		return false;
+
+	if (!array[iolh_idx])
+		return false;
+
+	for (i = 0; i < RZG2L_IOLH_MAX_DS_ENTRIES; i++) {
+		if (array[iolh_idx + i] == ds)
+			return true;
+	}
+
+	return false;
+}
+
 static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 				     unsigned int _pin,
 				     unsigned long *config)
@@ -564,13 +740,11 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	enum pin_config_param param = pinconf_to_config_param(*config);
 	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
-	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
 	unsigned int *pin_data = pin->drv_data;
 	unsigned int arg = 0;
-	unsigned long flags;
-	void __iomem *addr;
 	u32 off, cfg;
+	int ret;
 	u8 bit;
 
 	if (!pin_data)
@@ -596,40 +770,49 @@ static int rzg2l_pinctrl_pinconf_get(struct pinctrl_dev *pctldev,
 			return -EINVAL;
 		break;
 
-	case PIN_CONFIG_POWER_SOURCE: {
-		u32 pwr_reg = 0x0;
-
-		if (cfg & PIN_CFG_IO_VMC_SD0)
-			pwr_reg = SD_CH(regs->sd_ch, 0);
-		else if (cfg & PIN_CFG_IO_VMC_SD1)
-			pwr_reg = SD_CH(regs->sd_ch, 1);
-		else if (cfg & PIN_CFG_IO_VMC_QSPI)
-			pwr_reg = QSPI;
-		else
-			return -EINVAL;
-
-		spin_lock_irqsave(&pctrl->lock, flags);
-		addr = pctrl->base + pwr_reg;
-		arg = (readl(addr) & PVDD_MASK) ? 1800 : 3300;
-		spin_unlock_irqrestore(&pctrl->lock, flags);
+	case PIN_CONFIG_POWER_SOURCE:
+		ret = rzg2l_get_power_source(pctrl, _pin, cfg);
+		if (ret < 0)
+			return ret;
+		arg = ret;
 		break;
-	}
 
 	case PIN_CONFIG_DRIVE_STRENGTH: {
 		unsigned int index;
 
-		if (!(cfg & PIN_CFG_IOLH_A))
+		if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
+		/*
+		 * Drive strenght mA is supported only by group A and only
+		 * for 3V3 port source.
+		 */
 		arg = hwcfg->iolh_groupa_ua[index + RZG2L_IOLH_IDX_3V3] / 1000;
 		break;
 	}
 
+	case PIN_CONFIG_DRIVE_STRENGTH_UA: {
+		enum rzg2l_iolh_index iolh_idx;
+		u8 val;
+
+		if (!(cfg & (PIN_CFG_IOLH_A | PIN_CFG_IOLH_B | PIN_CFG_IOLH_C)) ||
+		    !hwcfg->drive_strength_ua)
+			return -EINVAL;
+
+		ret = rzg2l_get_power_source(pctrl, _pin, cfg);
+		if (ret < 0)
+			return ret;
+		iolh_idx = rzg2l_ps_to_iolh_idx(ret);
+		val = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
+		arg = rzg2l_iolh_val_to_ua(hwcfg, cfg, iolh_idx + val);
+		break;
+	}
+
 	case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
 		unsigned int index;
 
-		if (!(cfg & PIN_CFG_IOLH_B))
+		if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
 			return -EINVAL;
 
 		index = rzg2l_read_pin_config(pctrl, IOLH(off), bit, IOLH_MASK);
@@ -653,14 +836,13 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 {
 	struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
 	const struct pinctrl_pin_desc *pin = &pctrl->desc.pins[_pin];
-	unsigned int *pin_data = pin->drv_data;
 	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
-	const struct rzg2l_register_offsets *regs = &hwcfg->regs;
+	struct rzg2l_pinctrl_pin_settings settings = pctrl->settings[_pin];
+	unsigned int *pin_data = pin->drv_data;
 	enum pin_config_param param;
-	unsigned long flags;
-	void __iomem *addr;
 	unsigned int i;
 	u32 cfg, off;
+	int ret;
 	u8 bit;
 
 	if (!pin_data)
@@ -691,34 +873,15 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 		}
 
-		case PIN_CONFIG_POWER_SOURCE: {
-			unsigned int mV = pinconf_to_config_argument(_configs[i]);
-			u32 pwr_reg = 0x0;
-
-			if (mV != 1800 && mV != 3300)
-				return -EINVAL;
-
-			if (cfg & PIN_CFG_IO_VMC_SD0)
-				pwr_reg = SD_CH(regs->sd_ch, 0);
-			else if (cfg & PIN_CFG_IO_VMC_SD1)
-				pwr_reg = SD_CH(regs->sd_ch, 1);
-			else if (cfg & PIN_CFG_IO_VMC_QSPI)
-				pwr_reg = QSPI;
-			else
-				return -EINVAL;
-
-			addr = pctrl->base + pwr_reg;
-			spin_lock_irqsave(&pctrl->lock, flags);
-			writel((mV == 1800) ? PVDD_1800 : PVDD_3300, addr);
-			spin_unlock_irqrestore(&pctrl->lock, flags);
+		case PIN_CONFIG_POWER_SOURCE:
+			settings.power_source = pinconf_to_config_argument(_configs[i]);
 			break;
-		}
 
 		case PIN_CONFIG_DRIVE_STRENGTH: {
 			unsigned int arg = pinconf_to_config_argument(_configs[i]);
 			unsigned int index;
 
-			if (!(cfg & PIN_CFG_IOLH_A))
+			if (!(cfg & PIN_CFG_IOLH_A) || hwcfg->drive_strength_ua)
 				return -EINVAL;
 
 			for (index = RZG2L_IOLH_IDX_3V3;
@@ -733,11 +896,19 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 		}
 
+		case PIN_CONFIG_DRIVE_STRENGTH_UA:
+			if (!(cfg & (PIN_CFG_IOLH_A | PIN_CFG_IOLH_B | PIN_CFG_IOLH_C)) ||
+			    !hwcfg->drive_strength_ua)
+				return -EINVAL;
+
+			settings.drive_strength_ua = pinconf_to_config_argument(_configs[i]);
+			break;
+
 		case PIN_CONFIG_OUTPUT_IMPEDANCE_OHMS: {
 			unsigned int arg = pinconf_to_config_argument(_configs[i]);
 			unsigned int index;
 
-			if (!(cfg & PIN_CFG_IOLH_B))
+			if (!(cfg & PIN_CFG_IOLH_B) || !hwcfg->iolh_groupb_oi[0])
 				return -EINVAL;
 
 			for (index = 0; index < ARRAY_SIZE(hwcfg->iolh_groupb_oi); index++) {
@@ -756,6 +927,39 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 		}
 	}
 
+	/* Apply power source. */
+	if (settings.power_source != pctrl->settings[_pin].power_source) {
+		ret = rzg2l_ps_is_supported(settings.power_source);
+		if (!ret)
+			return -EINVAL;
+
+		/* Apply power source. */
+		ret = rzg2l_set_power_source(pctrl, _pin, cfg, settings.power_source);
+		if (ret)
+			return ret;
+	}
+
+	/* Apply drive strength. */
+	if (settings.drive_strength_ua != pctrl->settings[_pin].drive_strength_ua) {
+		enum rzg2l_iolh_index iolh_idx;
+		int val;
+
+		iolh_idx = rzg2l_ps_to_iolh_idx(settings.power_source);
+		ret = rzg2l_ds_is_supported(pctrl, cfg, iolh_idx,
+					    settings.drive_strength_ua);
+		if (!ret)
+			return -EINVAL;
+
+		/* Get register value for this PS/DS tuple. */
+		val = rzg2l_iolh_ua_to_val(hwcfg, cfg, iolh_idx, settings.drive_strength_ua);
+		if (val == -EINVAL)
+			return -EINVAL;
+
+		/* Apply drive strength. */
+		rzg2l_rmw_pin_config(pctrl, IOLH(off), bit, IOLH_MASK, val);
+		pctrl->settings[_pin].drive_strength_ua = settings.drive_strength_ua;
+	}
+
 	return 0;
 }
 
@@ -1463,6 +1667,7 @@ static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
 
 static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
 {
+	const struct rzg2l_hwcfg *hwcfg = pctrl->data->hwcfg;
 	struct pinctrl_pin_desc *pins;
 	unsigned int i, j;
 	u32 *pin_data;
@@ -1505,6 +1710,22 @@ static int rzg2l_pinctrl_register(struct rzg2l_pinctrl *pctrl)
 		pins[index].drv_data = &pin_data[index];
 	}
 
+	pctrl->settings = devm_kcalloc(pctrl->dev, pctrl->desc.npins, sizeof(*pctrl->settings),
+				       GFP_KERNEL);
+	if (!pctrl->settings)
+		return -ENOMEM;
+
+	for (i = 0; hwcfg->drive_strength_ua && i < pctrl->desc.npins; i++) {
+		if (pin_data[i] & PIN_CFG_SOFT_PS) {
+			pctrl->settings[i].power_source = 3300;
+		} else {
+			ret = rzg2l_get_power_source(pctrl, i, pin_data[i]);
+			if (ret < 0)
+				continue;
+			pctrl->settings[i].power_source = ret;
+		}
+	}
+
 	ret = devm_pinctrl_register_and_init(pctrl->dev, &pctrl->desc, pctrl,
 					     &pctrl->pctl);
 	if (ret) {
-- 
2.39.2


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[PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Set additionalProperties: false.

Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- this patch is new in v2 and added as suggested by Rob

 .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
index 4782f96feb7e..eb726770f571 100644
--- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
@@ -106,8 +106,7 @@ additionalProperties:
         line-name: true
 
     - type: object
-      additionalProperties:
-        $ref: "#/additionalProperties/anyOf/0"
+      additionalProperties: false
 
 allOf:
   - $ref: pinctrl.yaml#
-- 
2.39.2

[PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Set additionalProperties: false.

Suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- this patch is new in v2 and added as suggested by Rob

 .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
index 4782f96feb7e..eb726770f571 100644
--- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
@@ -106,8 +106,7 @@ additionalProperties:
         line-name: true
 
     - type: object
-      additionalProperties:
-        $ref: "#/additionalProperties/anyOf/0"
+      additionalProperties: false
 
 allOf:
   - $ref: pinctrl.yaml#
-- 
2.39.2


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[PATCH v2 20/28] dt-bindings: pinctrl: renesas: document RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add documentation for pin controller found on RZ/G3S (R9A08G045) SoC.
Compared with RZ/G2{L,UL} RZ/G3S has 82 general-purpose IOs, no slew
rate and output impedance support and more values for drive strength
which needs to be expressed in microamp.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- defined drive-strength-microamp as general and make if/then schema to
  not allow specific properties depending on compatible

 .../pinctrl/renesas,rzg2l-pinctrl.yaml        | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
index eb726770f571..86228ba69aab 100644
--- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
@@ -25,6 +25,7 @@ properties:
           - enum:
               - renesas,r9a07g043-pinctrl # RZ/G2UL{Type-1,Type-2} and RZ/Five
               - renesas,r9a07g044-pinctrl # RZ/G2{L,LC}
+              - renesas,r9a08g045-pinctrl # RZ/G3S
 
       - items:
           - enum:
@@ -78,6 +79,21 @@ additionalProperties:
         - $ref: pincfg-node.yaml#
         - $ref: pinmux-node.yaml#
 
+        - if:
+            properties:
+              compatible:
+                contains:
+                  enum:
+                    - renesas,r9a08g045-pinctrl
+          then:
+            properties:
+              drive-strength: false
+              output-impedance-ohms: false
+              slew-rate: false
+          else:
+            properties:
+              drive-strength-microamp: false
+
       description:
         Pin controller client devices use pin configuration subnodes (children
         and grandchildren) for desired pin configuration.
@@ -92,6 +108,10 @@ additionalProperties:
         pins: true
         drive-strength:
           enum: [ 2, 4, 8, 12 ]
+        drive-strength-microamp:
+          enum: [ 1900, 2200, 4000, 4400, 4500, 4700, 5200, 5300, 5700,
+                  5800, 6000, 6050, 6100, 6550, 6800, 7000, 8000, 9000,
+                  10000 ]
         output-impedance-ohms:
           enum: [ 33, 50, 66, 100 ]
         power-source:
-- 
2.39.2

[PATCH v2 20/28] dt-bindings: pinctrl: renesas: document RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add documentation for pin controller found on RZ/G3S (R9A08G045) SoC.
Compared with RZ/G2{L,UL} RZ/G3S has 82 general-purpose IOs, no slew
rate and output impedance support and more values for drive strength
which needs to be expressed in microamp.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- defined drive-strength-microamp as general and make if/then schema to
  not allow specific properties depending on compatible

 .../pinctrl/renesas,rzg2l-pinctrl.yaml        | 20 +++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
index eb726770f571..86228ba69aab 100644
--- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
@@ -25,6 +25,7 @@ properties:
           - enum:
               - renesas,r9a07g043-pinctrl # RZ/G2UL{Type-1,Type-2} and RZ/Five
               - renesas,r9a07g044-pinctrl # RZ/G2{L,LC}
+              - renesas,r9a08g045-pinctrl # RZ/G3S
 
       - items:
           - enum:
@@ -78,6 +79,21 @@ additionalProperties:
         - $ref: pincfg-node.yaml#
         - $ref: pinmux-node.yaml#
 
+        - if:
+            properties:
+              compatible:
+                contains:
+                  enum:
+                    - renesas,r9a08g045-pinctrl
+          then:
+            properties:
+              drive-strength: false
+              output-impedance-ohms: false
+              slew-rate: false
+          else:
+            properties:
+              drive-strength-microamp: false
+
       description:
         Pin controller client devices use pin configuration subnodes (children
         and grandchildren) for desired pin configuration.
@@ -92,6 +108,10 @@ additionalProperties:
         pins: true
         drive-strength:
           enum: [ 2, 4, 8, 12 ]
+        drive-strength-microamp:
+          enum: [ 1900, 2200, 4000, 4400, 4500, 4700, 5200, 5300, 5700,
+                  5800, 6000, 6050, 6100, 6550, 6800, 7000, 8000, 9000,
+                  10000 ]
         output-impedance-ohms:
           enum: [ 33, 50, 66, 100 ]
         power-source:
-- 
2.39.2


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH v2 21/28] pinctrl: renesas: rzg2l: add support for RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add basic support for RZ/G3S to be able to boot from SD card, have a
running console port and use GPIOs. RZ/G3S has 82 general-purpose IO
ports. Support for the remaining pin functions (e.g. Ethernet, XSPI)
will be added along with controller specific support.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- dropped [RZG2L_IOLH_IDX_2V5 ... RZG2L_IOLH_IDX_3V3 - 1] =
  RZG2L_INVALID_IOLH_VAL initializations from v1 as these are not needed
  anymore with the new code adjustements
- added BUILD_BUG_ON() for r9a08g045_gpio_configs[] in
  rzg2l_pinctrl_probe()

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 126 +++++++++++++++++++++++-
 1 file changed, 124 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 8b74838510ad..57af2db445e1 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -58,13 +58,19 @@
 #define PIN_CFG_IOLH_C			BIT(13)
 #define PIN_CFG_SOFT_PS			BIT(14)
 
-#define RZG2L_MPXED_PIN_FUNCS		(PIN_CFG_IOLH_A | \
-					 PIN_CFG_SR | \
+#define RZG2L_MPXED_COMMON_PIN_FUNCS(group) \
+					(PIN_CFG_IOLH_##group | \
 					 PIN_CFG_PUPD | \
 					 PIN_CFG_FILONOFF | \
 					 PIN_CFG_FILNUM | \
 					 PIN_CFG_FILCLKSEL)
 
+#define RZG2L_MPXED_PIN_FUNCS		(RZG2L_MPXED_COMMON_PIN_FUNCS(A) | \
+					 PIN_CFG_SR)
+
+#define RZG3S_MPXED_PIN_FUNCS(group)	(RZG2L_MPXED_COMMON_PIN_FUNCS(group) | \
+					 PIN_CFG_SOFT_PS)
+
 #define RZG2L_MPXED_ETH_PIN_FUNCS(x)	((x) | \
 					 PIN_CFG_FILONOFF | \
 					 PIN_CFG_FILNUM | \
@@ -1313,6 +1319,36 @@ static const u32 r9a07g043_gpio_configs[] = {
 	RZG2L_GPIO_PORT_PACK(6, 0x22, RZG2L_MPXED_PIN_FUNCS),
 };
 
+static const u32 r9a08g045_gpio_configs[] = {
+	RZG2L_GPIO_PORT_PACK(4, 0x20, RZG3S_MPXED_PIN_FUNCS(A)),			/* P0  */
+	RZG2L_GPIO_PORT_PACK(5, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P1 */
+	RZG2L_GPIO_PORT_PACK(4, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P2 */
+	RZG2L_GPIO_PORT_PACK(4, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P3 */
+	RZG2L_GPIO_PORT_PACK(6, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P4 */
+	RZG2L_GPIO_PORT_PACK(5, 0x21, RZG3S_MPXED_PIN_FUNCS(A)),			/* P5  */
+	RZG2L_GPIO_PORT_PACK(5, 0x22, RZG3S_MPXED_PIN_FUNCS(A)),			/* P6  */
+	RZG2L_GPIO_PORT_PACK(5, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P7 */
+	RZG2L_GPIO_PORT_PACK(5, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P8 */
+	RZG2L_GPIO_PORT_PACK(4, 0x36, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P9 */
+	RZG2L_GPIO_PORT_PACK(5, 0x37, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P10 */
+	RZG2L_GPIO_PORT_PACK(4, 0x23, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN),		/* P11  */
+	RZG2L_GPIO_PORT_PACK(2, 0x24, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN),		/* P12  */
+	RZG2L_GPIO_PORT_PACK(5, 0x25, RZG3S_MPXED_PIN_FUNCS(A)),			/* P13  */
+	RZG2L_GPIO_PORT_PACK(3, 0x26, RZG3S_MPXED_PIN_FUNCS(A)),			/* P14  */
+	RZG2L_GPIO_PORT_PACK(4, 0x27, RZG3S_MPXED_PIN_FUNCS(A)),			/* P15  */
+	RZG2L_GPIO_PORT_PACK(2, 0x28, RZG3S_MPXED_PIN_FUNCS(A)),			/* P16  */
+	RZG2L_GPIO_PORT_PACK(4, 0x29, RZG3S_MPXED_PIN_FUNCS(A)),			/* P17  */
+	RZG2L_GPIO_PORT_PACK(6, 0x2a, RZG3S_MPXED_PIN_FUNCS(A)),			/* P18 */
+};
+
 static const struct {
 	struct rzg2l_dedicated_configs common[35];
 	struct rzg2l_dedicated_configs rzg2l_pins[7];
@@ -1399,6 +1435,46 @@ static const struct {
 	}
 };
 
+static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
+	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
+						PIN_CFG_FILCLKSEL)) },
+	{ "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_IOLH_A | PIN_CFG_IEN |
+						      PIN_CFG_SOFT_PS)) },
+	{ "TDO", RZG2L_SINGLE_PIN_PACK(0x1, 1, (PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS)) },
+	{ "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0x6, 0, PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS) },
+	{ "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x10, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x10, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						     PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x10, 2, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x11, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x11, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x11, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x11, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x11, 4, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x11, 5, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x11, 6, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x11, 7, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x12, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x12, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						     PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x13, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x13, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x13, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x13, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+};
+
 static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_data *data)
 {
 	unsigned int gpioint;
@@ -1760,6 +1836,9 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)
 	BUILD_BUG_ON(ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT >
 		     ARRAY_SIZE(rzg2l_gpio_names));
 
+	BUILD_BUG_ON(ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT >
+		     ARRAY_SIZE(rzg2l_gpio_names));
+
 	pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
 	if (!pctrl)
 		return -ENOMEM;
@@ -1805,6 +1884,35 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
 	.iolh_groupb_oi = { 100, 66, 50, 33, },
 };
 
+static const struct rzg2l_hwcfg rzg3s_hwcfg = {
+	.regs = {
+		.pwpr = 0x3000,
+		.sd_ch = 0x3004,
+	},
+	.iolh_groupa_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 2200, 4400, 9000, 10000,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 1900, 4000, 8000, 9000,
+	},
+	.iolh_groupb_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 7000, 8000, 9000, 10000,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 4000, 6000, 8000, 9000,
+	},
+	.iolh_groupc_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 5200, 6000, 6550, 6800,
+		/* 2v5 source */
+		[RZG2L_IOLH_IDX_2V5] = 4700, 5300, 5800, 6100,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 4500, 5200, 5700, 6050,
+	},
+	.drive_strength_ua = true,
+	.func_base = 1,
+};
+
 static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.port_pins = rzg2l_gpio_names,
 	.port_pin_configs = r9a07g043_gpio_configs,
@@ -1826,6 +1934,16 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
 	.hwcfg = &rzg2l_hwcfg,
 };
 
+static struct rzg2l_pinctrl_data r9a08g045_data = {
+	.port_pins = rzg2l_gpio_names,
+	.port_pin_configs = r9a08g045_gpio_configs,
+	.n_ports = ARRAY_SIZE(r9a08g045_gpio_configs),
+	.dedicated_pins = rzg3s_dedicated_pins,
+	.n_port_pins = ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT,
+	.n_dedicated_pins = ARRAY_SIZE(rzg3s_dedicated_pins),
+	.hwcfg = &rzg3s_hwcfg,
+};
+
 static const struct of_device_id rzg2l_pinctrl_of_table[] = {
 	{
 		.compatible = "renesas,r9a07g043-pinctrl",
@@ -1835,6 +1953,10 @@ static const struct of_device_id rzg2l_pinctrl_of_table[] = {
 		.compatible = "renesas,r9a07g044-pinctrl",
 		.data = &r9a07g044_data,
 	},
+	{
+		.compatible = "renesas,r9a08g045-pinctrl",
+		.data = &r9a08g045_data,
+	},
 	{ /* sentinel */ }
 };
 
-- 
2.39.2

[PATCH v2 21/28] pinctrl: renesas: rzg2l: add support for RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add basic support for RZ/G3S to be able to boot from SD card, have a
running console port and use GPIOs. RZ/G3S has 82 general-purpose IO
ports. Support for the remaining pin functions (e.g. Ethernet, XSPI)
will be added along with controller specific support.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- dropped [RZG2L_IOLH_IDX_2V5 ... RZG2L_IOLH_IDX_3V3 - 1] =
  RZG2L_INVALID_IOLH_VAL initializations from v1 as these are not needed
  anymore with the new code adjustements
- added BUILD_BUG_ON() for r9a08g045_gpio_configs[] in
  rzg2l_pinctrl_probe()

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 126 +++++++++++++++++++++++-
 1 file changed, 124 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 8b74838510ad..57af2db445e1 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -58,13 +58,19 @@
 #define PIN_CFG_IOLH_C			BIT(13)
 #define PIN_CFG_SOFT_PS			BIT(14)
 
-#define RZG2L_MPXED_PIN_FUNCS		(PIN_CFG_IOLH_A | \
-					 PIN_CFG_SR | \
+#define RZG2L_MPXED_COMMON_PIN_FUNCS(group) \
+					(PIN_CFG_IOLH_##group | \
 					 PIN_CFG_PUPD | \
 					 PIN_CFG_FILONOFF | \
 					 PIN_CFG_FILNUM | \
 					 PIN_CFG_FILCLKSEL)
 
+#define RZG2L_MPXED_PIN_FUNCS		(RZG2L_MPXED_COMMON_PIN_FUNCS(A) | \
+					 PIN_CFG_SR)
+
+#define RZG3S_MPXED_PIN_FUNCS(group)	(RZG2L_MPXED_COMMON_PIN_FUNCS(group) | \
+					 PIN_CFG_SOFT_PS)
+
 #define RZG2L_MPXED_ETH_PIN_FUNCS(x)	((x) | \
 					 PIN_CFG_FILONOFF | \
 					 PIN_CFG_FILNUM | \
@@ -1313,6 +1319,36 @@ static const u32 r9a07g043_gpio_configs[] = {
 	RZG2L_GPIO_PORT_PACK(6, 0x22, RZG2L_MPXED_PIN_FUNCS),
 };
 
+static const u32 r9a08g045_gpio_configs[] = {
+	RZG2L_GPIO_PORT_PACK(4, 0x20, RZG3S_MPXED_PIN_FUNCS(A)),			/* P0  */
+	RZG2L_GPIO_PORT_PACK(5, 0x30, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P1 */
+	RZG2L_GPIO_PORT_PACK(4, 0x31, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P2 */
+	RZG2L_GPIO_PORT_PACK(4, 0x32, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P3 */
+	RZG2L_GPIO_PORT_PACK(6, 0x33, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH0)),	/* P4 */
+	RZG2L_GPIO_PORT_PACK(5, 0x21, RZG3S_MPXED_PIN_FUNCS(A)),			/* P5  */
+	RZG2L_GPIO_PORT_PACK(5, 0x22, RZG3S_MPXED_PIN_FUNCS(A)),			/* P6  */
+	RZG2L_GPIO_PORT_PACK(5, 0x34, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P7 */
+	RZG2L_GPIO_PORT_PACK(5, 0x35, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P8 */
+	RZG2L_GPIO_PORT_PACK(4, 0x36, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P9 */
+	RZG2L_GPIO_PORT_PACK(5, 0x37, RZG2L_MPXED_ETH_PIN_FUNCS(PIN_CFG_IOLH_C |
+								PIN_CFG_IO_VMC_ETH1)),	/* P10 */
+	RZG2L_GPIO_PORT_PACK(4, 0x23, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN),		/* P11  */
+	RZG2L_GPIO_PORT_PACK(2, 0x24, RZG3S_MPXED_PIN_FUNCS(B) | PIN_CFG_IEN),		/* P12  */
+	RZG2L_GPIO_PORT_PACK(5, 0x25, RZG3S_MPXED_PIN_FUNCS(A)),			/* P13  */
+	RZG2L_GPIO_PORT_PACK(3, 0x26, RZG3S_MPXED_PIN_FUNCS(A)),			/* P14  */
+	RZG2L_GPIO_PORT_PACK(4, 0x27, RZG3S_MPXED_PIN_FUNCS(A)),			/* P15  */
+	RZG2L_GPIO_PORT_PACK(2, 0x28, RZG3S_MPXED_PIN_FUNCS(A)),			/* P16  */
+	RZG2L_GPIO_PORT_PACK(4, 0x29, RZG3S_MPXED_PIN_FUNCS(A)),			/* P17  */
+	RZG2L_GPIO_PORT_PACK(6, 0x2a, RZG3S_MPXED_PIN_FUNCS(A)),			/* P18 */
+};
+
 static const struct {
 	struct rzg2l_dedicated_configs common[35];
 	struct rzg2l_dedicated_configs rzg2l_pins[7];
@@ -1399,6 +1435,46 @@ static const struct {
 	}
 };
 
+static const struct rzg2l_dedicated_configs rzg3s_dedicated_pins[] = {
+	{ "NMI", RZG2L_SINGLE_PIN_PACK(0x0, 0, (PIN_CFG_FILONOFF | PIN_CFG_FILNUM |
+						PIN_CFG_FILCLKSEL)) },
+	{ "TMS/SWDIO", RZG2L_SINGLE_PIN_PACK(0x1, 0, (PIN_CFG_IOLH_A | PIN_CFG_IEN |
+						      PIN_CFG_SOFT_PS)) },
+	{ "TDO", RZG2L_SINGLE_PIN_PACK(0x1, 1, (PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS)) },
+	{ "WDTOVF_PERROUT#", RZG2L_SINGLE_PIN_PACK(0x6, 0, PIN_CFG_IOLH_A | PIN_CFG_SOFT_PS) },
+	{ "SD0_CLK", RZG2L_SINGLE_PIN_PACK(0x10, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_CMD", RZG2L_SINGLE_PIN_PACK(0x10, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						     PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_RST#", RZG2L_SINGLE_PIN_PACK(0x10, 2, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA0", RZG2L_SINGLE_PIN_PACK(0x11, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA1", RZG2L_SINGLE_PIN_PACK(0x11, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA2", RZG2L_SINGLE_PIN_PACK(0x11, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA3", RZG2L_SINGLE_PIN_PACK(0x11, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA4", RZG2L_SINGLE_PIN_PACK(0x11, 4, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA5", RZG2L_SINGLE_PIN_PACK(0x11, 5, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA6", RZG2L_SINGLE_PIN_PACK(0x11, 6, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD0_DATA7", RZG2L_SINGLE_PIN_PACK(0x11, 7, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD0)) },
+	{ "SD1_CLK", RZG2L_SINGLE_PIN_PACK(0x12, 0, (PIN_CFG_IOLH_B | PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_CMD", RZG2L_SINGLE_PIN_PACK(0x12, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						     PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA0", RZG2L_SINGLE_PIN_PACK(0x13, 0, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA1", RZG2L_SINGLE_PIN_PACK(0x13, 1, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA2", RZG2L_SINGLE_PIN_PACK(0x13, 2, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+	{ "SD1_DATA3", RZG2L_SINGLE_PIN_PACK(0x13, 3, (PIN_CFG_IOLH_B | PIN_CFG_IEN |
+						       PIN_CFG_IO_VMC_SD1)) },
+};
+
 static int rzg2l_gpio_get_gpioint(unsigned int virq, const struct rzg2l_pinctrl_data *data)
 {
 	unsigned int gpioint;
@@ -1760,6 +1836,9 @@ static int rzg2l_pinctrl_probe(struct platform_device *pdev)
 	BUILD_BUG_ON(ARRAY_SIZE(r9a07g043_gpio_configs) * RZG2L_PINS_PER_PORT >
 		     ARRAY_SIZE(rzg2l_gpio_names));
 
+	BUILD_BUG_ON(ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT >
+		     ARRAY_SIZE(rzg2l_gpio_names));
+
 	pctrl = devm_kzalloc(&pdev->dev, sizeof(*pctrl), GFP_KERNEL);
 	if (!pctrl)
 		return -ENOMEM;
@@ -1805,6 +1884,35 @@ static const struct rzg2l_hwcfg rzg2l_hwcfg = {
 	.iolh_groupb_oi = { 100, 66, 50, 33, },
 };
 
+static const struct rzg2l_hwcfg rzg3s_hwcfg = {
+	.regs = {
+		.pwpr = 0x3000,
+		.sd_ch = 0x3004,
+	},
+	.iolh_groupa_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 2200, 4400, 9000, 10000,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 1900, 4000, 8000, 9000,
+	},
+	.iolh_groupb_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 7000, 8000, 9000, 10000,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 4000, 6000, 8000, 9000,
+	},
+	.iolh_groupc_ua = {
+		/* 1v8 power source */
+		[RZG2L_IOLH_IDX_1V8] = 5200, 6000, 6550, 6800,
+		/* 2v5 source */
+		[RZG2L_IOLH_IDX_2V5] = 4700, 5300, 5800, 6100,
+		/* 3v3 power source */
+		[RZG2L_IOLH_IDX_3V3] = 4500, 5200, 5700, 6050,
+	},
+	.drive_strength_ua = true,
+	.func_base = 1,
+};
+
 static struct rzg2l_pinctrl_data r9a07g043_data = {
 	.port_pins = rzg2l_gpio_names,
 	.port_pin_configs = r9a07g043_gpio_configs,
@@ -1826,6 +1934,16 @@ static struct rzg2l_pinctrl_data r9a07g044_data = {
 	.hwcfg = &rzg2l_hwcfg,
 };
 
+static struct rzg2l_pinctrl_data r9a08g045_data = {
+	.port_pins = rzg2l_gpio_names,
+	.port_pin_configs = r9a08g045_gpio_configs,
+	.n_ports = ARRAY_SIZE(r9a08g045_gpio_configs),
+	.dedicated_pins = rzg3s_dedicated_pins,
+	.n_port_pins = ARRAY_SIZE(r9a08g045_gpio_configs) * RZG2L_PINS_PER_PORT,
+	.n_dedicated_pins = ARRAY_SIZE(rzg3s_dedicated_pins),
+	.hwcfg = &rzg3s_hwcfg,
+};
+
 static const struct of_device_id rzg2l_pinctrl_of_table[] = {
 	{
 		.compatible = "renesas,r9a07g043-pinctrl",
@@ -1835,6 +1953,10 @@ static const struct of_device_id rzg2l_pinctrl_of_table[] = {
 		.compatible = "renesas,r9a07g044-pinctrl",
 		.data = &r9a07g044_data,
 	},
+	{
+		.compatible = "renesas,r9a08g045-pinctrl",
+		.data = &r9a08g045_data,
+	},
 	{ /* sentinel */ }
 };
 
-- 
2.39.2


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[PATCH v2 22/28] arm64: dts: renesas: add initial DTSI for RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial DTSI for RZ/G3S SoC. Files in commit has the following
meaning:
r9a08g045.dtsi		RZ/G3S family SoC common parts
r9a08g045s33.dtsi	RZ/G3S R0A08G045S33 SoC specific parts

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    | 139 ++++++++++++++++++
 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi |  14 ++
 2 files changed, 153 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi

diff --git a/arch/arm64/boot/dts/renesas/r9a08g045.dtsi b/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
new file mode 100644
index 000000000000..7971e44a5a0a
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G3S SoC
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/r9a08g045-cpg.h>
+
+/ {
+	compatible = "renesas,r9a08g045";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a55";
+			reg = <0>;
+			device_type = "cpu";
+			#cooling-cells = <2>;
+			next-level-cache = <&L3_CA55>;
+			enable-method = "psci";
+			clocks = <&cpg CPG_CORE R9A08G045_CLK_I>;
+		};
+
+		L3_CA55: cache-controller-0 {
+			compatible = "cache";
+			cache-unified;
+			cache-size = <0x40000>;
+		};
+	};
+
+	extal_clk: extal-clk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		/* This value must be overridden by the board. */
+		clock-frequency = <0>;
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		interrupt-parent = <&gic>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		scif0: serial@1004b800 {
+			compatible = "renesas,scif-r9a08g045", "renesas,scif-r9a07g044";
+			reg = <0 0x1004b800 0 0x400>;
+			interrupts = <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 322 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 323 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "eri", "rxi", "txi",
+					  "bri", "dri", "tei";
+			clocks = <&cpg CPG_MOD R9A08G045_SCIF0_CLK_PCK>;
+			clock-names = "fck";
+			power-domains = <&cpg>;
+			resets = <&cpg R9A08G045_SCIF0_RST_SYSTEM_N>;
+			status = "disabled";
+		};
+
+		cpg: clock-controller@11010000 {
+			compatible = "renesas,r9a08g045-cpg";
+			reg = <0 0x11010000 0 0x10000>;
+			clocks = <&extal_clk>;
+			clock-names = "extal";
+			#clock-cells = <2>;
+			#reset-cells = <1>;
+			#power-domain-cells = <0>;
+		};
+
+		sysc: system-controller@11020000 {
+			compatible = "renesas,r9a08g045-sysc";
+			reg = <0 0x11020000 0 0x10000>;
+			interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "lpm_int", "ca55stbydone_int",
+					  "cm33stbyr_int", "ca55_deny";
+			status = "disabled";
+		};
+
+		pinctrl: pinctrl@11030000 {
+			compatible = "renesas,r9a08g045-pinctrl";
+			reg = <0 0x11030000 0 0x10000>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			gpio-ranges = <&pinctrl 0 0 152>;
+			clocks = <&cpg CPG_MOD R9A08G045_GPIO_HCLK>;
+			power-domains = <&cpg>;
+			resets = <&cpg R9A08G045_GPIO_RSTN>,
+				 <&cpg R9A08G045_GPIO_PORT_RESETN>,
+				 <&cpg R9A08G045_GPIO_SPARE_RESETN>;
+		};
+
+		sdhi0: mmc@11c00000  {
+			compatible = "renesas,sdhi-r9a08g045", "renesas,rcar-gen3-sdhi";
+			reg = <0x0 0x11c00000 0 0x10000>;
+			interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD R9A08G045_SDHI0_IMCLK>,
+				 <&cpg CPG_MOD R9A08G045_SDHI0_CLK_HS>,
+				 <&cpg CPG_MOD R9A08G045_SDHI0_IMCLK2>,
+				 <&cpg CPG_MOD R9A08G045_SDHI0_ACLK>;
+			clock-names = "core", "clkh", "cd", "aclk";
+			resets = <&cpg R9A08G045_SDHI0_IXRST>;
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		gic: interrupt-controller@12400000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x0 0x12400000 0 0x40000>,
+			      <0x0 0x12440000 0 0x60000>;
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts-extended = <&gic GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+				      <&gic GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+				      <&gic GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+				      <&gic GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
diff --git a/arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi b/arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi
new file mode 100644
index 000000000000..3351f26c7a2a
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G3S R9A08G045S33 SoC specific part
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+
+#include "r9a08g045.dtsi"
+
+/ {
+	compatible = "renesas,r9a08g045s33", "renesas,r9a08g045";
+};
-- 
2.39.2

[PATCH v2 22/28] arm64: dts: renesas: add initial DTSI for RZ/G3S SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial DTSI for RZ/G3S SoC. Files in commit has the following
meaning:
r9a08g045.dtsi		RZ/G3S family SoC common parts
r9a08g045s33.dtsi	RZ/G3S R0A08G045S33 SoC specific parts

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 arch/arm64/boot/dts/renesas/r9a08g045.dtsi    | 139 ++++++++++++++++++
 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi |  14 ++
 2 files changed, 153 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045.dtsi
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi

diff --git a/arch/arm64/boot/dts/renesas/r9a08g045.dtsi b/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
new file mode 100644
index 000000000000..7971e44a5a0a
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a08g045.dtsi
@@ -0,0 +1,139 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G3S SoC
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/r9a08g045-cpg.h>
+
+/ {
+	compatible = "renesas,r9a08g045";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu0: cpu@0 {
+			compatible = "arm,cortex-a55";
+			reg = <0>;
+			device_type = "cpu";
+			#cooling-cells = <2>;
+			next-level-cache = <&L3_CA55>;
+			enable-method = "psci";
+			clocks = <&cpg CPG_CORE R9A08G045_CLK_I>;
+		};
+
+		L3_CA55: cache-controller-0 {
+			compatible = "cache";
+			cache-unified;
+			cache-size = <0x40000>;
+		};
+	};
+
+	extal_clk: extal-clk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		/* This value must be overridden by the board. */
+		clock-frequency = <0>;
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		interrupt-parent = <&gic>;
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		scif0: serial@1004b800 {
+			compatible = "renesas,scif-r9a08g045", "renesas,scif-r9a07g044";
+			reg = <0 0x1004b800 0 0x400>;
+			interrupts = <GIC_SPI 320 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 322 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 323 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 321 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 324 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "eri", "rxi", "txi",
+					  "bri", "dri", "tei";
+			clocks = <&cpg CPG_MOD R9A08G045_SCIF0_CLK_PCK>;
+			clock-names = "fck";
+			power-domains = <&cpg>;
+			resets = <&cpg R9A08G045_SCIF0_RST_SYSTEM_N>;
+			status = "disabled";
+		};
+
+		cpg: clock-controller@11010000 {
+			compatible = "renesas,r9a08g045-cpg";
+			reg = <0 0x11010000 0 0x10000>;
+			clocks = <&extal_clk>;
+			clock-names = "extal";
+			#clock-cells = <2>;
+			#reset-cells = <1>;
+			#power-domain-cells = <0>;
+		};
+
+		sysc: system-controller@11020000 {
+			compatible = "renesas,r9a08g045-sysc";
+			reg = <0 0x11020000 0 0x10000>;
+			interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 42 IRQ_TYPE_LEVEL_HIGH>;
+			interrupt-names = "lpm_int", "ca55stbydone_int",
+					  "cm33stbyr_int", "ca55_deny";
+			status = "disabled";
+		};
+
+		pinctrl: pinctrl@11030000 {
+			compatible = "renesas,r9a08g045-pinctrl";
+			reg = <0 0x11030000 0 0x10000>;
+			gpio-controller;
+			#gpio-cells = <2>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+			gpio-ranges = <&pinctrl 0 0 152>;
+			clocks = <&cpg CPG_MOD R9A08G045_GPIO_HCLK>;
+			power-domains = <&cpg>;
+			resets = <&cpg R9A08G045_GPIO_RSTN>,
+				 <&cpg R9A08G045_GPIO_PORT_RESETN>,
+				 <&cpg R9A08G045_GPIO_SPARE_RESETN>;
+		};
+
+		sdhi0: mmc@11c00000  {
+			compatible = "renesas,sdhi-r9a08g045", "renesas,rcar-gen3-sdhi";
+			reg = <0x0 0x11c00000 0 0x10000>;
+			interrupts = <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD R9A08G045_SDHI0_IMCLK>,
+				 <&cpg CPG_MOD R9A08G045_SDHI0_CLK_HS>,
+				 <&cpg CPG_MOD R9A08G045_SDHI0_IMCLK2>,
+				 <&cpg CPG_MOD R9A08G045_SDHI0_ACLK>;
+			clock-names = "core", "clkh", "cd", "aclk";
+			resets = <&cpg R9A08G045_SDHI0_IXRST>;
+			power-domains = <&cpg>;
+			status = "disabled";
+		};
+
+		gic: interrupt-controller@12400000 {
+			compatible = "arm,gic-v3";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x0 0x12400000 0 0x40000>,
+			      <0x0 0x12440000 0 0x60000>;
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_LOW>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupts-extended = <&gic GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+				      <&gic GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+				      <&gic GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+				      <&gic GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+	};
+};
diff --git a/arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi b/arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi
new file mode 100644
index 000000000000..3351f26c7a2a
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a08g045s33.dtsi
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G3S R9A08G045S33 SoC specific part
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+
+#include "r9a08g045.dtsi"
+
+/ {
+	compatible = "renesas,r9a08g045s33", "renesas,r9a08g045";
+};
-- 
2.39.2


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[PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document Renesas RZ/G3S SMARC SoM board which is based on RZ/G3S
(R9A08G045S33) SoC.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- this patch is new in v2 and added as suggested by Geert

 Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
index 822faf081e84..31d0539bb168 100644
--- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
+++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
@@ -480,6 +480,12 @@ properties:
               - renesas,r9a08g045s33 # PCIe support
           - const: renesas,r9a08g045
 
+      - description: RZ/G3S SMARC Module (SoM)
+        items:
+          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC Module (SoM)
+          - const: renesas,r9a08g045s33 # PCIe support
+          - const: renesas,r9a08g045
+
 additionalProperties: true
 
 ...
-- 
2.39.2

[PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document Renesas RZ/G3S SMARC SoM board which is based on RZ/G3S
(R9A08G045S33) SoC.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- this patch is new in v2 and added as suggested by Geert

 Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
index 822faf081e84..31d0539bb168 100644
--- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
+++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
@@ -480,6 +480,12 @@ properties:
               - renesas,r9a08g045s33 # PCIe support
           - const: renesas,r9a08g045
 
+      - description: RZ/G3S SMARC Module (SoM)
+        items:
+          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC Module (SoM)
+          - const: renesas,r9a08g045s33 # PCIe support
+          - const: renesas,r9a08g045
+
 additionalProperties: true
 
 ...
-- 
2.39.2


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[PATCH v2 24/28] arm64: dts: renesas: rzg3l-smarc-som: add initial support for RZ/G3S SMARC SoM

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial support for RZ/G3S SMARC SoM. The following devices available
on SoM were added to this initial device tree:

- RZ/G3S SoC: Renesas R9A08G045S33GBG
- Clock Generator (only 24MHz output): Renesas 5L35023B
- 1GiB LPDDR4 SDRAM: Micron MT53D512M16D1DS-046
- 64GB eMMC Flash (though SD ch0): Micron MTFC64GBCAQTC

SD channel 0 of RZ/G3S is connected to an uSD card interface
and an eMMC. The selection b/w them is done though a hardware switch.
The DT will select b/w uSD and eMMC though SW_SD0_DEV_SEL build flag.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- s/Carrier-II SoM/SoM in patch title
- listed in commit description only devices addressed by this initial dtsi
- s/8G LPDDR4/1GiB LPDDR4 in commit description
- removed sd0-pwr-en-hog node and use specific GPIO in vcc_sdhi0 regulator
- added SoM compatible:
  compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";

 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     | 142 ++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
new file mode 100644
index 000000000000..185ca8289a35
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the R9A08G045S33 SMARC Carrier-II's SoM board.
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+/*
+ * Signals of SW_CONFIG switches:
+ * @SW_SD0_DEV_SEL:
+ *	0 - SD0 is connected to eMMC
+ *	1 - SD0 is connected to uSD0 card
+ */
+#define SW_SD0_DEV_SEL	1
+
+/ {
+	compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";
+
+	aliases {
+		mmc0 = &sdhi0;
+	};
+
+	chosen {
+		bootargs = "ignore_loglevel";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@48000000 {
+		device-type = "memory";
+		/* First 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x38000000>;
+	};
+
+	vcc_sdhi0: regulator0 {
+		compatible = "regulator-fixed";
+		regulator-name = "SDHI0 Vcc";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpios = <&pinctrl RZG2L_GPIO(2, 1) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+#if SW_SD0_DEV_SEL
+	vccq_sdhi0: regulator1 {
+		compatible = "regulator-gpio";
+		regulator-name = "SDHI0 VccQ";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		gpios = <&pinctrl RZG2L_GPIO(2, 2) GPIO_ACTIVE_HIGH>;
+		gpios-states = <1>;
+		states = <3300000 1>, <1800000 0>;
+	};
+#else
+	reg_1p8v: regulator1 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+#endif
+};
+
+&extal_clk {
+	clock-frequency = <24000000>;
+};
+
+#if SW_SD0_DEV_SEL
+/* SD0 slot */
+&sdhi0 {
+	pinctrl-0 = <&sdhi0_pins>;
+	pinctrl-1 = <&sdhi0_uhs_pins>;
+	pinctrl-names = "default", "state_uhs";
+	vmmc-supply = <&vcc_sdhi0>;
+	vqmmc-supply = <&vccq_sdhi0>;
+	bus-width = <4>;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	max-frequency = <125000000>;
+	status = "okay";
+};
+#else
+/* eMMC */
+&sdhi0 {
+	pinctrl-0 = <&sdhi0_emmc_pins>;
+	pinctrl-1 = <&sdhi0_emmc_pins>;
+	pinctrl-names = "default", "state_uhs";
+	vmmc-supply = <&vcc_sdhi0>;
+	vqmmc-supply = <&reg_1p8v>;
+	bus-width = <8>;
+	mmc-hs200-1_8v;
+	non-removable;
+	fixed-emmc-driver-type = <1>;
+	max-frequency = <125000000>;
+	status = "okay";
+};
+#endif
+
+&pinctrl {
+	sdhi0_pins: sd0 {
+		data {
+			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";
+			power-source = <3300>;
+		};
+
+		ctrl {
+			pins = "SD0_CLK", "SD0_CMD";
+			power-source = <3300>;
+		};
+
+		cd {
+			pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* SD0_CD */
+		};
+	};
+
+	sdhi0_uhs_pins: sd0-uhs {
+		data {
+			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";
+			power-source = <1800>;
+		};
+
+		ctrl {
+			pins = "SD0_CLK", "SD0_CMD";
+			power-source = <1800>;
+		};
+
+		cd {
+			pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* SD0_CD */
+		};
+	};
+
+	sdhi0_emmc_pins: sd0-emmc {
+		pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3",
+		       "SD0_DATA4", "SD0_DATA5", "SD0_DATA6", "SD0_DATA7",
+		       "SD0_CLK", "SD0_CMD", "SD0_RST#";
+		power-source = <1800>;
+	};
+};
-- 
2.39.2

[PATCH v2 24/28] arm64: dts: renesas: rzg3l-smarc-som: add initial support for RZ/G3S SMARC SoM

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial support for RZ/G3S SMARC SoM. The following devices available
on SoM were added to this initial device tree:

- RZ/G3S SoC: Renesas R9A08G045S33GBG
- Clock Generator (only 24MHz output): Renesas 5L35023B
- 1GiB LPDDR4 SDRAM: Micron MT53D512M16D1DS-046
- 64GB eMMC Flash (though SD ch0): Micron MTFC64GBCAQTC

SD channel 0 of RZ/G3S is connected to an uSD card interface
and an eMMC. The selection b/w them is done though a hardware switch.
The DT will select b/w uSD and eMMC though SW_SD0_DEV_SEL build flag.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- s/Carrier-II SoM/SoM in patch title
- listed in commit description only devices addressed by this initial dtsi
- s/8G LPDDR4/1GiB LPDDR4 in commit description
- removed sd0-pwr-en-hog node and use specific GPIO in vcc_sdhi0 regulator
- added SoM compatible:
  compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";

 .../boot/dts/renesas/rzg3s-smarc-som.dtsi     | 142 ++++++++++++++++++
 1 file changed, 142 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
new file mode 100644
index 000000000000..185ca8289a35
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc-som.dtsi
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the R9A08G045S33 SMARC Carrier-II's SoM board.
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+/*
+ * Signals of SW_CONFIG switches:
+ * @SW_SD0_DEV_SEL:
+ *	0 - SD0 is connected to eMMC
+ *	1 - SD0 is connected to uSD0 card
+ */
+#define SW_SD0_DEV_SEL	1
+
+/ {
+	compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";
+
+	aliases {
+		mmc0 = &sdhi0;
+	};
+
+	chosen {
+		bootargs = "ignore_loglevel";
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory@48000000 {
+		device-type = "memory";
+		/* First 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x38000000>;
+	};
+
+	vcc_sdhi0: regulator0 {
+		compatible = "regulator-fixed";
+		regulator-name = "SDHI0 Vcc";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpios = <&pinctrl RZG2L_GPIO(2, 1) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+#if SW_SD0_DEV_SEL
+	vccq_sdhi0: regulator1 {
+		compatible = "regulator-gpio";
+		regulator-name = "SDHI0 VccQ";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		gpios = <&pinctrl RZG2L_GPIO(2, 2) GPIO_ACTIVE_HIGH>;
+		gpios-states = <1>;
+		states = <3300000 1>, <1800000 0>;
+	};
+#else
+	reg_1p8v: regulator1 {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+#endif
+};
+
+&extal_clk {
+	clock-frequency = <24000000>;
+};
+
+#if SW_SD0_DEV_SEL
+/* SD0 slot */
+&sdhi0 {
+	pinctrl-0 = <&sdhi0_pins>;
+	pinctrl-1 = <&sdhi0_uhs_pins>;
+	pinctrl-names = "default", "state_uhs";
+	vmmc-supply = <&vcc_sdhi0>;
+	vqmmc-supply = <&vccq_sdhi0>;
+	bus-width = <4>;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	max-frequency = <125000000>;
+	status = "okay";
+};
+#else
+/* eMMC */
+&sdhi0 {
+	pinctrl-0 = <&sdhi0_emmc_pins>;
+	pinctrl-1 = <&sdhi0_emmc_pins>;
+	pinctrl-names = "default", "state_uhs";
+	vmmc-supply = <&vcc_sdhi0>;
+	vqmmc-supply = <&reg_1p8v>;
+	bus-width = <8>;
+	mmc-hs200-1_8v;
+	non-removable;
+	fixed-emmc-driver-type = <1>;
+	max-frequency = <125000000>;
+	status = "okay";
+};
+#endif
+
+&pinctrl {
+	sdhi0_pins: sd0 {
+		data {
+			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";
+			power-source = <3300>;
+		};
+
+		ctrl {
+			pins = "SD0_CLK", "SD0_CMD";
+			power-source = <3300>;
+		};
+
+		cd {
+			pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* SD0_CD */
+		};
+	};
+
+	sdhi0_uhs_pins: sd0-uhs {
+		data {
+			pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3";
+			power-source = <1800>;
+		};
+
+		ctrl {
+			pins = "SD0_CLK", "SD0_CMD";
+			power-source = <1800>;
+		};
+
+		cd {
+			pinmux = <RZG2L_PORT_PINMUX(0, 0, 1)>; /* SD0_CD */
+		};
+	};
+
+	sdhi0_emmc_pins: sd0-emmc {
+		pins = "SD0_DATA0", "SD0_DATA1", "SD0_DATA2", "SD0_DATA3",
+		       "SD0_DATA4", "SD0_DATA5", "SD0_DATA6", "SD0_DATA7",
+		       "SD0_CLK", "SD0_CMD", "SD0_RST#";
+		power-source = <1800>;
+	};
+};
-- 
2.39.2


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[PATCH v2 25/28] arm64: dts: renesas: rzg3s-smarc: add initial device tree for RZ SMARC Carrier-II Board

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial device tree for RZ SMARC Carrier-II. At the moment it
contains only serial interface.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- inversed the pin naming

 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi | 28 ++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
new file mode 100644
index 000000000000..e7073a09ed2e
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ SMARC Carrier-II Board.
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+/ {
+	aliases {
+		serial0 = &scif0;
+	};
+};
+
+&pinctrl {
+	scif0_pins: scif0 {
+		pinmux = <RZG2L_PORT_PINMUX(6, 3, 1)>, /* RXD */
+			 <RZG2L_PORT_PINMUX(6, 4, 1)>; /* TXD */
+	};
+};
+
+&scif0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&scif0_pins>;
+	status = "okay";
+};
-- 
2.39.2

[PATCH v2 25/28] arm64: dts: renesas: rzg3s-smarc: add initial device tree for RZ SMARC Carrier-II Board

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial device tree for RZ SMARC Carrier-II. At the moment it
contains only serial interface.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- inversed the pin naming

 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi | 28 ++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi

diff --git a/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
new file mode 100644
index 000000000000..e7073a09ed2e
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg3s-smarc.dtsi
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ SMARC Carrier-II Board.
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
+
+/ {
+	aliases {
+		serial0 = &scif0;
+	};
+};
+
+&pinctrl {
+	scif0_pins: scif0 {
+		pinmux = <RZG2L_PORT_PINMUX(6, 3, 1)>, /* RXD */
+			 <RZG2L_PORT_PINMUX(6, 4, 1)>; /* TXD */
+	};
+};
+
+&scif0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&scif0_pins>;
+	status = "okay";
+};
-- 
2.39.2


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[PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document Renesas SMARC Carrier-II EVK board which is based on RZ/G3S
SMARC SoM. The SMARC Carrier-II EVK consists of RZ/G3S SoM module and
SMARC Carrier-II carrier board, the SoM module sits on top of carrier
board.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- this patch is new in v2

 Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
index 31d0539bb168..594a7d7a6ee4 100644
--- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
+++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
@@ -486,6 +486,13 @@ properties:
           - const: renesas,r9a08g045s33 # PCIe support
           - const: renesas,r9a08g045
 
+      - description: RZ SMARC Carrier-II Evaluation Kit
+        items:
+          - const: renesas,smarc2-evk # RZ SMARC Carrier-II EVK
+          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC SoM
+          - const: renesas,r9a08g045s33 # PCIe support
+          - const: renesas,r9a08g045
+
 additionalProperties: true
 
 ...
-- 
2.39.2

[PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Document Renesas SMARC Carrier-II EVK board which is based on RZ/G3S
SMARC SoM. The SMARC Carrier-II EVK consists of RZ/G3S SoM module and
SMARC Carrier-II carrier board, the SoM module sits on top of carrier
board.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- this patch is new in v2

 Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
index 31d0539bb168..594a7d7a6ee4 100644
--- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
+++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
@@ -486,6 +486,13 @@ properties:
           - const: renesas,r9a08g045s33 # PCIe support
           - const: renesas,r9a08g045
 
+      - description: RZ SMARC Carrier-II Evaluation Kit
+        items:
+          - const: renesas,smarc2-evk # RZ SMARC Carrier-II EVK
+          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC SoM
+          - const: renesas,r9a08g045s33 # PCIe support
+          - const: renesas,r9a08g045
+
 additionalProperties: true
 
 ...
-- 
2.39.2


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[PATCH v2 27/28] arm64: dts: renesas: r9a08g045s33-smarc: add initial device tree for RZ/G3S SMARC EVK board

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial device tree for RZ/G3S SMARC EVK board.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- modified compatible
- @Geert: I haven't added you Rb tag as I've added
  "renesas,rzg3s-smarcm" to the compatible list

 arch/arm64/boot/dts/renesas/Makefile            |  2 ++
 .../boot/dts/renesas/r9a08g045s33-smarc.dts     | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 7114cbbd8713..254983ca56a1 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -86,6 +86,8 @@ dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc-cru-csi-ov5645.dtbo
 dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-smarc-cru-csi-ov5645.dtbo
 
+dtb-$(CONFIG_ARCH_R9A08G045) += r9a08g045s33-smarc.dtb
+
 dtb-$(CONFIG_ARCH_R9A09G011) += r9a09g011-v2mevk2.dtb
 
 dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts b/arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts
new file mode 100644
index 000000000000..7d775d10a97e
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G3S SMARC EVK board
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+
+#include "r9a08g045s33.dtsi"
+#include "rzg3s-smarc-som.dtsi"
+#include "rzg3s-smarc.dtsi"
+
+/ {
+	model = "Renesas SMARC EVK version 2 based on r9a08g045s33";
+	compatible = "renesas,smarc2-evk", "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";
+};
-- 
2.39.2

[PATCH v2 27/28] arm64: dts: renesas: r9a08g045s33-smarc: add initial device tree for RZ/G3S SMARC EVK board

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Add initial device tree for RZ/G3S SMARC EVK board.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---

Changes in v2:
- modified compatible
- @Geert: I haven't added you Rb tag as I've added
  "renesas,rzg3s-smarcm" to the compatible list

 arch/arm64/boot/dts/renesas/Makefile            |  2 ++
 .../boot/dts/renesas/r9a08g045s33-smarc.dts     | 17 +++++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 7114cbbd8713..254983ca56a1 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -86,6 +86,8 @@ dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc-cru-csi-ov5645.dtbo
 dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-smarc-cru-csi-ov5645.dtbo
 
+dtb-$(CONFIG_ARCH_R9A08G045) += r9a08g045s33-smarc.dtb
+
 dtb-$(CONFIG_ARCH_R9A09G011) += r9a09g011-v2mevk2.dtb
 
 dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts b/arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts
new file mode 100644
index 000000000000..7d775d10a97e
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r9a08g045s33-smarc.dts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the RZ/G3S SMARC EVK board
+ *
+ * Copyright (C) 2023 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+
+#include "r9a08g045s33.dtsi"
+#include "rzg3s-smarc-som.dtsi"
+#include "rzg3s-smarc.dtsi"
+
+/ {
+	model = "Renesas SMARC EVK version 2 based on r9a08g045s33";
+	compatible = "renesas,smarc2-evk", "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";
+};
-- 
2.39.2


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[PATCH v2 28/28] arm64: defconfig: enable RZ/G3S (R9A08G045) SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Enable config flag for Renesas RZ/G3S (R9A08G045) SoC.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 66bfbef73324..07011114eef8 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1341,6 +1341,7 @@ CONFIG_ARCH_R8A774B1=y
 CONFIG_ARCH_R9A07G043=y
 CONFIG_ARCH_R9A07G044=y
 CONFIG_ARCH_R9A07G054=y
+CONFIG_ARCH_R9A08G045=y
 CONFIG_ARCH_R9A09G011=y
 CONFIG_ROCKCHIP_IODOMAIN=y
 CONFIG_ROCKCHIP_PM_DOMAINS=y
-- 
2.39.2

[PATCH v2 28/28] arm64: defconfig: enable RZ/G3S (R9A08G045) SoC

[Claudiu]

From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Enable config flag for Renesas RZ/G3S (R9A08G045) SoC.

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- collected tags

 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 66bfbef73324..07011114eef8 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -1341,6 +1341,7 @@ CONFIG_ARCH_R8A774B1=y
 CONFIG_ARCH_R9A07G043=y
 CONFIG_ARCH_R9A07G044=y
 CONFIG_ARCH_R9A07G054=y
+CONFIG_ARCH_R9A08G045=y
 CONFIG_ARCH_R9A09G011=y
 CONFIG_ROCKCHIP_IODOMAIN=y
 CONFIG_ROCKCHIP_PM_DOMAINS=y
-- 
2.39.2


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Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Paul Barker]

[-- Attachment #1.1.1: Type: text/plain, Size: 956 bytes --]

On 29/09/2023 06:39, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> RZ/G3S supports different drive strength values for different power sources
> and pin groups (A, B, C). On each group there could be up to 4 drive
> strength values per power source. Available power sources are 1v8, 2v5,
> 3v3. Drive strength values are fine tuned than what was previously

Should this be "are more fine tuned" or "are less fine tuned"?

> available on the driver thus the necessity of having micro-amp support.
> As drive strength and power source values are linked together the
> hardware setup for these was moved at the end of
> rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
> values.
> 
> The drive strength values are expected to be initialized though SoC
> specific hardware configuration data structure.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Thanks,
Paul

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Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Paul Barker]

[-- Attachment #1.1.1.1: Type: text/plain, Size: 956 bytes --]

On 29/09/2023 06:39, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> RZ/G3S supports different drive strength values for different power sources
> and pin groups (A, B, C). On each group there could be up to 4 drive
> strength values per power source. Available power sources are 1v8, 2v5,
> 3v3. Drive strength values are fine tuned than what was previously

Should this be "are more fine tuned" or "are less fine tuned"?

> available on the driver thus the necessity of having micro-amp support.
> As drive strength and power source values are linked together the
> hardware setup for these was moved at the end of
> rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
> values.
> 
> The drive strength values are expected to be initialized though SoC
> specific hardware configuration data structure.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Thanks,
Paul

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Re: [PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK

[Conor Dooley]

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On Fri, Sep 29, 2023 at 08:39:13AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Document Renesas SMARC Carrier-II EVK board which is based on RZ/G3S
> SMARC SoM. The SMARC Carrier-II EVK consists of RZ/G3S SoM module and
> SMARC Carrier-II carrier board, the SoM module sits on top of carrier
> board.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
> 
> Changes in v2:
> - this patch is new in v2
> 
>  Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> index 31d0539bb168..594a7d7a6ee4 100644
> --- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> @@ -486,6 +486,13 @@ properties:
>            - const: renesas,r9a08g045s33 # PCIe support
>            - const: renesas,r9a08g045
>  
> +      - description: RZ SMARC Carrier-II Evaluation Kit
> +        items:
> +          - const: renesas,smarc2-evk # RZ SMARC Carrier-II EVK
> +          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC SoM
> +          - const: renesas,r9a08g045s33 # PCIe support
> +          - const: renesas,r9a08g045
> +
>  additionalProperties: true
>  
>  ...
> -- 
> 2.39.2
> 

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Re: [PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK

[Conor Dooley]

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On Fri, Sep 29, 2023 at 08:39:13AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Document Renesas SMARC Carrier-II EVK board which is based on RZ/G3S
> SMARC SoM. The SMARC Carrier-II EVK consists of RZ/G3S SoM module and
> SMARC Carrier-II carrier board, the SoM module sits on top of carrier
> board.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
> 
> Changes in v2:
> - this patch is new in v2
> 
>  Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> index 31d0539bb168..594a7d7a6ee4 100644
> --- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> @@ -486,6 +486,13 @@ properties:
>            - const: renesas,r9a08g045s33 # PCIe support
>            - const: renesas,r9a08g045
>  
> +      - description: RZ SMARC Carrier-II Evaluation Kit
> +        items:
> +          - const: renesas,smarc2-evk # RZ SMARC Carrier-II EVK
> +          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC SoM
> +          - const: renesas,r9a08g045s33 # PCIe support
> +          - const: renesas,r9a08g045
> +
>  additionalProperties: true
>  
>  ...
> -- 
> 2.39.2
> 

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Re: [PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM

[Conor Dooley]

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On Fri, Sep 29, 2023 at 08:39:10AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Document Renesas RZ/G3S SMARC SoM board which is based on RZ/G3S
> (R9A08G045S33) SoC.
> 
> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
> 
> Changes in v2:
> - this patch is new in v2 and added as suggested by Geert
> 
>  Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> index 822faf081e84..31d0539bb168 100644
> --- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> @@ -480,6 +480,12 @@ properties:
>                - renesas,r9a08g045s33 # PCIe support
>            - const: renesas,r9a08g045
>  
> +      - description: RZ/G3S SMARC Module (SoM)
> +        items:
> +          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC Module (SoM)
> +          - const: renesas,r9a08g045s33 # PCIe support
> +          - const: renesas,r9a08g045
> +
>  additionalProperties: true
>  
>  ...
> -- 
> 2.39.2
> 

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Re: [PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM

[Conor Dooley]

[-- Attachment #1.1: Type: text/plain, Size: 1392 bytes --]

On Fri, Sep 29, 2023 at 08:39:10AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Document Renesas RZ/G3S SMARC SoM board which is based on RZ/G3S
> (R9A08G045S33) SoC.
> 
> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
> 
> Changes in v2:
> - this patch is new in v2 and added as suggested by Geert
> 
>  Documentation/devicetree/bindings/soc/renesas/renesas.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> index 822faf081e84..31d0539bb168 100644
> --- a/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> +++ b/Documentation/devicetree/bindings/soc/renesas/renesas.yaml
> @@ -480,6 +480,12 @@ properties:
>                - renesas,r9a08g045s33 # PCIe support
>            - const: renesas,r9a08g045
>  
> +      - description: RZ/G3S SMARC Module (SoM)
> +        items:
> +          - const: renesas,rzg3s-smarcm # RZ/G3S SMARC Module (SoM)
> +          - const: renesas,r9a08g045s33 # PCIe support
> +          - const: renesas,r9a08g045
> +
>  additionalProperties: true
>  
>  ...
> -- 
> 2.39.2
> 

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Re: [PATCH v2 20/28] dt-bindings: pinctrl: renesas: document RZ/G3S SoC

[Conor Dooley]

[-- Attachment #1: Type: text/plain, Size: 2694 bytes --]

On Fri, Sep 29, 2023 at 08:39:07AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Add documentation for pin controller found on RZ/G3S (R9A08G045) SoC.
> Compared with RZ/G2{L,UL} RZ/G3S has 82 general-purpose IOs, no slew
> rate and output impedance support and more values for drive strength
> which needs to be expressed in microamp.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
> 
> Changes in v2:
> - defined drive-strength-microamp as general and make if/then schema to
>   not allow specific properties depending on compatible
> 
>  .../pinctrl/renesas,rzg2l-pinctrl.yaml        | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> index eb726770f571..86228ba69aab 100644
> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> @@ -25,6 +25,7 @@ properties:
>            - enum:
>                - renesas,r9a07g043-pinctrl # RZ/G2UL{Type-1,Type-2} and RZ/Five
>                - renesas,r9a07g044-pinctrl # RZ/G2{L,LC}
> +              - renesas,r9a08g045-pinctrl # RZ/G3S
>  
>        - items:
>            - enum:
> @@ -78,6 +79,21 @@ additionalProperties:
>          - $ref: pincfg-node.yaml#
>          - $ref: pinmux-node.yaml#
>  
> +        - if:
> +            properties:
> +              compatible:
> +                contains:
> +                  enum:
> +                    - renesas,r9a08g045-pinctrl
> +          then:
> +            properties:
> +              drive-strength: false
> +              output-impedance-ohms: false
> +              slew-rate: false
> +          else:
> +            properties:
> +              drive-strength-microamp: false
> +
>        description:
>          Pin controller client devices use pin configuration subnodes (children
>          and grandchildren) for desired pin configuration.
> @@ -92,6 +108,10 @@ additionalProperties:
>          pins: true
>          drive-strength:
>            enum: [ 2, 4, 8, 12 ]
> +        drive-strength-microamp:
> +          enum: [ 1900, 2200, 4000, 4400, 4500, 4700, 5200, 5300, 5700,
> +                  5800, 6000, 6050, 6100, 6550, 6800, 7000, 8000, 9000,
> +                  10000 ]
>          output-impedance-ohms:
>            enum: [ 33, 50, 66, 100 ]
>          power-source:
> -- 
> 2.39.2
> 

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Re: [PATCH v2 20/28] dt-bindings: pinctrl: renesas: document RZ/G3S SoC

[Conor Dooley]

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On Fri, Sep 29, 2023 at 08:39:07AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Add documentation for pin controller found on RZ/G3S (R9A08G045) SoC.
> Compared with RZ/G2{L,UL} RZ/G3S has 82 general-purpose IOs, no slew
> rate and output impedance support and more values for drive strength
> which needs to be expressed in microamp.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> ---
> 
> Changes in v2:
> - defined drive-strength-microamp as general and make if/then schema to
>   not allow specific properties depending on compatible
> 
>  .../pinctrl/renesas,rzg2l-pinctrl.yaml        | 20 +++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> index eb726770f571..86228ba69aab 100644
> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> @@ -25,6 +25,7 @@ properties:
>            - enum:
>                - renesas,r9a07g043-pinctrl # RZ/G2UL{Type-1,Type-2} and RZ/Five
>                - renesas,r9a07g044-pinctrl # RZ/G2{L,LC}
> +              - renesas,r9a08g045-pinctrl # RZ/G3S
>  
>        - items:
>            - enum:
> @@ -78,6 +79,21 @@ additionalProperties:
>          - $ref: pincfg-node.yaml#
>          - $ref: pinmux-node.yaml#
>  
> +        - if:
> +            properties:
> +              compatible:
> +                contains:
> +                  enum:
> +                    - renesas,r9a08g045-pinctrl
> +          then:
> +            properties:
> +              drive-strength: false
> +              output-impedance-ohms: false
> +              slew-rate: false
> +          else:
> +            properties:
> +              drive-strength-microamp: false
> +
>        description:
>          Pin controller client devices use pin configuration subnodes (children
>          and grandchildren) for desired pin configuration.
> @@ -92,6 +108,10 @@ additionalProperties:
>          pins: true
>          drive-strength:
>            enum: [ 2, 4, 8, 12 ]
> +        drive-strength-microamp:
> +          enum: [ 1900, 2200, 4000, 4400, 4500, 4700, 5200, 5300, 5700,
> +                  5800, 6000, 6050, 6100, 6550, 6800, 7000, 8000, 9000,
> +                  10000 ]
>          output-impedance-ohms:
>            enum: [ 33, 50, 66, 100 ]
>          power-source:
> -- 
> 2.39.2
> 

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Re: [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[Conor Dooley]

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On Fri, Sep 29, 2023 at 08:39:06AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Set additionalProperties: false.
> 
> Suggested-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
> 
> Changes in v2:
> - this patch is new in v2 and added as suggested by Rob
> 
>  .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> index 4782f96feb7e..eb726770f571 100644
> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> @@ -106,8 +106,7 @@ additionalProperties:
>          line-name: true
>  
>      - type: object
> -      additionalProperties:
> -        $ref: "#/additionalProperties/anyOf/0"

I have no clue what this original version was doing, I figure it
resolves to an empty list or something, and therefore acts just like
false?

New version looks a lot more normal..

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> +      additionalProperties: false
>  
>  allOf:
>    - $ref: pinctrl.yaml#
> -- 
> 2.39.2
> 

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Re: [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[Conor Dooley]

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On Fri, Sep 29, 2023 at 08:39:06AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Set additionalProperties: false.
> 
> Suggested-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
> 
> Changes in v2:
> - this patch is new in v2 and added as suggested by Rob
> 
>  .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> index 4782f96feb7e..eb726770f571 100644
> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> @@ -106,8 +106,7 @@ additionalProperties:
>          line-name: true
>  
>      - type: object
> -      additionalProperties:
> -        $ref: "#/additionalProperties/anyOf/0"

I have no clue what this original version was doing, I figure it
resolves to an empty list or something, and therefore acts just like
false?

New version looks a lot more normal..

Acked-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> +      additionalProperties: false
>  
>  allOf:
>    - $ref: pinctrl.yaml#
> -- 
> 2.39.2
> 

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Re: [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[Rob Herring]

On Fri, Sep 29, 2023 at 08:39:06AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Set additionalProperties: false.
> 
> Suggested-by: Rob Herring <robh@kernel.org>

I did?

> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
> 
> Changes in v2:
> - this patch is new in v2 and added as suggested by Rob
> 
>  .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> index 4782f96feb7e..eb726770f571 100644
> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> @@ -106,8 +106,7 @@ additionalProperties:
>          line-name: true
>  
>      - type: object
> -      additionalProperties:
> -        $ref: "#/additionalProperties/anyOf/0"
> +      additionalProperties: false

With no properties defined, this only allows an empty node which is 
probably not what you want. It's the other anyOf entry that needed it, 
but I already sent a fix which Linus applied.

Rob

Re: [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[Rob Herring]

On Fri, Sep 29, 2023 at 08:39:06AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> 
> Set additionalProperties: false.
> 
> Suggested-by: Rob Herring <robh@kernel.org>

I did?

> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
> 
> Changes in v2:
> - this patch is new in v2 and added as suggested by Rob
> 
>  .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> index 4782f96feb7e..eb726770f571 100644
> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
> @@ -106,8 +106,7 @@ additionalProperties:
>          line-name: true
>  
>      - type: object
> -      additionalProperties:
> -        $ref: "#/additionalProperties/anyOf/0"
> +      additionalProperties: false

With no properties defined, this only allows an empty node which is 
probably not what you want. It's the other anyOf entry that needed it, 
but I already sent a fix which Linus applied.

Rob

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Re: [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[claudiu beznea]

On 02.10.2023 17:50, Rob Herring wrote:
> On Fri, Sep 29, 2023 at 08:39:06AM +0300, Claudiu wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> Set additionalProperties: false.
>>
>> Suggested-by: Rob Herring <robh@kernel.org>
> 
> I did?

It is what I've understood from this:

https://patchwork.kernel.org/project/linux-renesas-soc/patch/20230912045157.177966-30-claudiu.beznea.uj@bp.renesas.com/

> 
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - this patch is new in v2 and added as suggested by Rob
>>
>>  .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
>>  1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
>> index 4782f96feb7e..eb726770f571 100644
>> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
>> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
>> @@ -106,8 +106,7 @@ additionalProperties:
>>          line-name: true
>>  
>>      - type: object
>> -      additionalProperties:
>> -        $ref: "#/additionalProperties/anyOf/0"
>> +      additionalProperties: false
> 
> With no properties defined, this only allows an empty node which is 
> probably not what you want. It's the other anyOf entry that needed it, 
> but I already sent a fix which Linus applied.

Thanks!

> 
> Rob

Re: [PATCH v2 19/28] dt-bindings: pinctrl: renesas: set additionalProperties: false

[claudiu beznea]

On 02.10.2023 17:50, Rob Herring wrote:
> On Fri, Sep 29, 2023 at 08:39:06AM +0300, Claudiu wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> Set additionalProperties: false.
>>
>> Suggested-by: Rob Herring <robh@kernel.org>
> 
> I did?

It is what I've understood from this:

https://patchwork.kernel.org/project/linux-renesas-soc/patch/20230912045157.177966-30-claudiu.beznea.uj@bp.renesas.com/

> 
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - this patch is new in v2 and added as suggested by Rob
>>
>>  .../devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml     | 3 +--
>>  1 file changed, 1 insertion(+), 2 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
>> index 4782f96feb7e..eb726770f571 100644
>> --- a/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
>> +++ b/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml
>> @@ -106,8 +106,7 @@ additionalProperties:
>>          line-name: true
>>  
>>      - type: object
>> -      additionalProperties:
>> -        $ref: "#/additionalProperties/anyOf/0"
>> +      additionalProperties: false
> 
> With no properties defined, this only allows an empty node which is 
> probably not what you want. It's the other anyOf entry that needed it, 
> but I already sent a fix which Linus applied.

Thanks!

> 
> Rob

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Re: [PATCH v2 02/28] clk: renesas: rzg2l: wait for status bit of SD mux before continuing

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Hardware user manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf,
> chapter 7.4.7 Procedure for Switching Clocks by the Dynamic Switching
> Frequency Selectors) specifies that we need to check CPG_PL2SDHI_DSEL for
> SD clock switching status.
>
> Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - initialized msk

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 02/28] clk: renesas: rzg2l: wait for status bit of SD mux before continuing

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Hardware user manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf,
> chapter 7.4.7 Procedure for Switching Clocks by the Dynamic Switching
> Frequency Selectors) specifies that we need to check CPG_PL2SDHI_DSEL for
> SD clock switching status.
>
> Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - initialized msk

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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Re: [PATCH v2 03/28] clk: renesas: rzg2l: lock around writes to mux register

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> SD MUX output (SD0) is further divided by 4 in G2{L, UL}. The divided
> clock is SD0_DIV4. SD0_DIV4 is registered with CLK_SET_RATE_PARENT which
> means a rate request for it is propagated to the MUX and could reach
> rzg2l_cpg_sd_clk_mux_set_parent() concurrently with the users of SD0.
> Add proper locking to avoid concurrent access on SD MUX set rate
> registers.
>
> Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - adapted delay_us to 10us
> - adapted CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US to 200us; tested
>   with this adjustements on RZ/G3S and RZ/G2L SoCs

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 03/28] clk: renesas: rzg2l: lock around writes to mux register

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> SD MUX output (SD0) is further divided by 4 in G2{L, UL}. The divided
> clock is SD0_DIV4. SD0_DIV4 is registered with CLK_SET_RATE_PARENT which
> means a rate request for it is propagated to the MUX and could reach
> rzg2l_cpg_sd_clk_mux_set_parent() concurrently with the users of SD0.
> Add proper locking to avoid concurrent access on SD MUX set rate
> registers.
>
> Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - adapted delay_us to 10us
> - adapted CPG_SDHI_CLK_SWITCH_STATUS_TIMEOUT_US to 200us; tested
>   with this adjustements on RZ/G3S and RZ/G2L SoCs

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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Re: [PATCH v2 04/28] clk: renesas: rzg2l: trust value returned by hardware

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Initial value of CPG_PL2SDHI_DSEL bits 0..1 or 4..6 is 01b. Hardware user's
> manual (r01uh0914ej0130-rzg2l-rzg2lc.pdf) specifies that setting 0 is
> prohibited. The rzg2l_cpg_sd_clk_mux_get_parent() should just read
> CPG_PL2SDHI_DSEL, trust the value and return the proper clock parent index
> based on the read value. Do this.
>
> Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - Used "return val ? val - 1 : 0;"

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 04/28] clk: renesas: rzg2l: trust value returned by hardware

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Initial value of CPG_PL2SDHI_DSEL bits 0..1 or 4..6 is 01b. Hardware user's
> manual (r01uh0914ej0130-rzg2l-rzg2lc.pdf) specifies that setting 0 is
> prohibited. The rzg2l_cpg_sd_clk_mux_get_parent() should just read
> CPG_PL2SDHI_DSEL, trust the value and return the proper clock parent index
> based on the read value. Do this.
>
> Fixes: eaff33646f4cb ("clk: renesas: rzg2l: Add SDHI clk mux support")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - Used "return val ? val - 1 : 0;"

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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Re: [PATCH v2 05/28] clk: renesas: rzg2l: fix computation formula

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> According to hardware manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf)
> the computation formula for PLL rate is as follows:
>
> Fout = ((m + k/65536) * Fin) / (p * 2^s)
>
> and k has values in range [-32768, 32767]. Dividing k by 65536 with
> integer variables leads all the time to zero. Thus we may have slight
> differences b/w what has been set vs. what is displayed. Thus,
> get rid of this and decompose the formula before dividing k by 65536.
>
> Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - used mul_u64_u32_shr()

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c
> @@ -695,18 +695,18 @@ static unsigned long rzg2l_cpg_pll_clk_recalc_rate(struct clk_hw *hw,
>         struct pll_clk *pll_clk = to_pll(hw);
>         struct rzg2l_cpg_priv *priv = pll_clk->priv;
>         unsigned int val1, val2;
> -       unsigned int mult = 1;
> -       unsigned int div = 1;
> +       u64 rate;
>
>         if (pll_clk->type != CLK_TYPE_SAM_PLL)
>                 return parent_rate;
>
>         val1 = readl(priv->base + GET_REG_SAMPLL_CLK1(pll_clk->conf));
>         val2 = readl(priv->base + GET_REG_SAMPLL_CLK2(pll_clk->conf));
> -       mult = MDIV(val1) + KDIV(val1) / 65536;
> -       div = PDIV(val1) << SDIV(val2);
>
> -       return DIV_ROUND_CLOSEST_ULL((u64)parent_rate * mult, div);
> +       rate = mul_u64_u32_shr(parent_rate, (MDIV(val1) << 16) + (s16)KDIV(val1),

As KDIV() is always a signed number, I will move the cast to s16 to
the definition of KDIV() while applying.

> +                              16 + SDIV(val2));
> +
> +       return DIV_ROUND_CLOSEST_ULL(rate, PDIV(val1));
>  }
>
>  static const struct clk_ops rzg2l_cpg_pll_ops = {

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 05/28] clk: renesas: rzg2l: fix computation formula

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> According to hardware manual of RZ/G2L (r01uh0914ej0130-rzg2l-rzg2lc.pdf)
> the computation formula for PLL rate is as follows:
>
> Fout = ((m + k/65536) * Fin) / (p * 2^s)
>
> and k has values in range [-32768, 32767]. Dividing k by 65536 with
> integer variables leads all the time to zero. Thus we may have slight
> differences b/w what has been set vs. what is displayed. Thus,
> get rid of this and decompose the formula before dividing k by 65536.
>
> Fixes: ef3c613ccd68a ("clk: renesas: Add CPG core wrapper for RZ/G2L SoC")
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - used mul_u64_u32_shr()

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c
> @@ -695,18 +695,18 @@ static unsigned long rzg2l_cpg_pll_clk_recalc_rate(struct clk_hw *hw,
>         struct pll_clk *pll_clk = to_pll(hw);
>         struct rzg2l_cpg_priv *priv = pll_clk->priv;
>         unsigned int val1, val2;
> -       unsigned int mult = 1;
> -       unsigned int div = 1;
> +       u64 rate;
>
>         if (pll_clk->type != CLK_TYPE_SAM_PLL)
>                 return parent_rate;
>
>         val1 = readl(priv->base + GET_REG_SAMPLL_CLK1(pll_clk->conf));
>         val2 = readl(priv->base + GET_REG_SAMPLL_CLK2(pll_clk->conf));
> -       mult = MDIV(val1) + KDIV(val1) / 65536;
> -       div = PDIV(val1) << SDIV(val2);
>
> -       return DIV_ROUND_CLOSEST_ULL((u64)parent_rate * mult, div);
> +       rate = mul_u64_u32_shr(parent_rate, (MDIV(val1) << 16) + (s16)KDIV(val1),

As KDIV() is always a signed number, I will move the cast to s16 to
the definition of KDIV() while applying.

> +                              16 + SDIV(val2));
> +
> +       return DIV_ROUND_CLOSEST_ULL(rate, PDIV(val1));
>  }
>
>  static const struct clk_ops rzg2l_cpg_pll_ops = {

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 06/28] clk: renesas: rzg2l: remove critical area

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> spinlock in rzg2l_mod_clock_endisable() is intended to protect the accesses
> to hardware register. There is no need to protect the instructions that set
> temporary variable which will be then written to register. With this only
> one write to one clock register is executed thus locking/unlocking rmw_lock
> is removed.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - removed also the spinlock
> - s/reduce/remove in patch title

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 06/28] clk: renesas: rzg2l: remove critical area

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> spinlock in rzg2l_mod_clock_endisable() is intended to protect the accesses
> to hardware register. There is no need to protect the instructions that set
> temporary variable which will be then written to register. With this only
> one write to one clock register is executed thus locking/unlocking rmw_lock
> is removed.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - removed also the spinlock
> - s/reduce/remove in patch title

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 07/28] clk: renesas: rzg2l: add support for RZ/G3S PLL

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add support for reading the frequency of PLL1/4/6 available on RZ/G3S.
> The computation formula for PLL frequency is as follows:
> Fout = (nir + nfr / 4096) * Fin / (mr * pr)
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - added GENMASK() defines for DIV_P, DIV_M, DIV_NI, DIV_NF
> - used mul_u64_u32_shr() as suggested by Geert on v1
> - s/CLK_TYPE_G3S_SAM_PLL/CLK_TYPE_G3S_PLL/g

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 07/28] clk: renesas: rzg2l: add support for RZ/G3S PLL

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add support for reading the frequency of PLL1/4/6 available on RZ/G3S.
> The computation formula for PLL frequency is as follows:
> Fout = (nir + nfr / 4096) * Fin / (mr * pr)
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - added GENMASK() defines for DIV_P, DIV_M, DIV_NI, DIV_NF
> - used mul_u64_u32_shr() as suggested by Geert on v1
> - s/CLK_TYPE_G3S_SAM_PLL/CLK_TYPE_G3S_PLL/g

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 08/28] clk: renesas: rzg2l: add struct clk_hw_data

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add clk_hw_data struct that keeps the core part of a clock data. The
> sd_hw_data embeds a member of type struct clk_hw_data along with other
> members (in the next commits). This commit prepares the field for
> refactoring the SD MUX clock driver.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Thanks, will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 08/28] clk: renesas: rzg2l: add struct clk_hw_data

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add clk_hw_data struct that keeps the core part of a clock data. The
> sd_hw_data embeds a member of type struct clk_hw_data along with other
> members (in the next commits). This commit prepares the field for
> refactoring the SD MUX clock driver.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Thanks, will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 09/28] clk: renesas: rzg2l: remove CPG_SDHI_DSEL from generic header

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Remove CPG_SDHI_DSEL and its bits from generic header as RZ/G3S has
> different offset register and bits for this, thus avoid mixing them.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - s/form/from in commit description
> - removed "G2UL_" prefix from macros' names
> - collected tags

Thanks, will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 09/28] clk: renesas: rzg2l: remove CPG_SDHI_DSEL from generic header

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Remove CPG_SDHI_DSEL and its bits from generic header as RZ/G3S has
> different offset register and bits for this, thus avoid mixing them.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - s/form/from in commit description
> - removed "G2UL_" prefix from macros' names
> - collected tags

Thanks, will queue in renesas-clk-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 10/28] clk: renesas: rzg2l: refactor sd mux driver

[Geert Uytterhoeven]

Hi Claudiu,

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Refactor SD MUX driver to be able to reuse the same code on RZ/G3S.
> RZ/G2{L, UL} has a limitation with regards to switching the clock source
> for SD MUX (MUX clock source has to be switched to 266MHz before switching
> b/w 533MHz and 400MHz). This limitation has been introduced as a clock
> notifier that is registered on platform based initialization data thus the
> SD MUX code could be reused on RZ/G3S.
>
> As both RZ/G2{L, UL} and RZ/G3S has specific bits in specific registers
> to check if the clock switching has been done, this configuration (register
> offset, register bits and bits width) is now passed though
> struct cpg_core_clk::sconf (status configuration) from platform specific
> initialization code.
>
> Along with struct cpg_core_clk::sconf the mux table indices are also
> passed from platform specific initialization code.
>
> Also, mux flags are now passed to DEF_SD_MUX() as they will be later
> used by RZ/G3S.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - s/indexes/indices in commit description
> - mentioned in commit description that mux flags can now be passed to
>   driver though DEF_SD_MUX() macro
> - removed SoC specific names from macros' names
> - added spaces after { and before } when initializing arrays
> - preserved the order of .[gs]set_parent() API definitions for simpler
>   diff b/w versions
> - removed SD_MUX_NOTIF macro

Thanks for the update!

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c

> @@ -142,6 +146,77 @@ static void rzg2l_cpg_del_clk_provider(void *data)
>         of_clk_del_provider(data);
>  }
>
> +/* Must be called in atomic context. */
> +static int rzg2l_cpg_wait_clk_update_done(void __iomem *base, u32 conf)
> +{
> +       u32 bitmask = GENMASK(GET_WIDTH(conf) - 1, 0) << GET_SHIFT(conf);
> +       u32 off = GET_REG_OFFSET(conf);
> +       u32 val;
> +
> +       return readl_poll_timeout_atomic(base + off, val, !(val & bitmask), 10, 200);
> +}
> +
> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event,
> +                                 void *data)
> +{
> +       struct clk_notifier_data *cnd = data;
> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
> +       const u32 clk_src_266 = 3;
> +       unsigned long flags;
> +       u32 bitmask;
> +       int ret;
> +
> +       if (event != PRE_RATE_CHANGE || (cnd->new_rate / MEGA == 266))
> +               return 0;

include/linux/clk.h:

 * PRE_RATE_CHANGE - called immediately before the clk rate is changed,
 *     to indicate that the rate change will proceed.  Drivers must
 *     immediately terminate any operations that will be affected by the
 *     rate change.  Callbacks may either return NOTIFY_DONE, NOTIFY_OK,
 *     NOTIFY_STOP or NOTIFY_BAD.

> +
> +       spin_lock_irqsave(&priv->rmw_lock, flags);
> +
> +       /*
> +        * As per the HW manual, we should not directly switch from 533 MHz to
> +        * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
> +        * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
> +        * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
> +        * (400 MHz)).
> +        * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
> +        * switching register is prohibited.
> +        * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
> +        * the index to value mapping is done by adding 1 to the index.
> +        */
> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
> +       writel(bitmask | (clk_src_266 << shift), priv->base + off);
> +
> +       /* Wait for the update done. */
> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
> +
> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
> +
> +       if (ret)
> +               dev_err(priv->dev, "failed to switch to safe clk source\n");
> +
> +       return ret;

Likewise.

> +}

>
>  static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
>         .determine_rate = __clk_mux_determine_rate_closest,
> -       .set_parent     = rzg2l_cpg_sd_clk_mux_set_parent,
> -       .get_parent     = rzg2l_cpg_sd_clk_mux_get_parent,
> +       .set_parent     = rzg2l_cpg_sd_mux_clk_set_parent,
> +       .get_parent     = rzg2l_cpg_sd_mux_clk_get_parent,

Please keep the old names, for consistency with
__clk_mux_determine_rate_closest() and drivers/clk/clk-mux.c, and to
reduce the diff.

Any existing inconsistent use of "clk_mux" vs. "mux_clk" can be resolved
later with a separate patch, if anyone cares.

> --- a/drivers/clk/renesas/rzg2l-cpg.h
> +++ b/drivers/clk/renesas/rzg2l-cpg.h

> @@ -272,4 +276,6 @@ extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
>  extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
>  extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
>
> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);

rzg2l_cpg_sd_clk_mux_notifier()?

> +
>  #endif

The rest LGTM.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 10/28] clk: renesas: rzg2l: refactor sd mux driver

[Geert Uytterhoeven]

Hi Claudiu,

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Refactor SD MUX driver to be able to reuse the same code on RZ/G3S.
> RZ/G2{L, UL} has a limitation with regards to switching the clock source
> for SD MUX (MUX clock source has to be switched to 266MHz before switching
> b/w 533MHz and 400MHz). This limitation has been introduced as a clock
> notifier that is registered on platform based initialization data thus the
> SD MUX code could be reused on RZ/G3S.
>
> As both RZ/G2{L, UL} and RZ/G3S has specific bits in specific registers
> to check if the clock switching has been done, this configuration (register
> offset, register bits and bits width) is now passed though
> struct cpg_core_clk::sconf (status configuration) from platform specific
> initialization code.
>
> Along with struct cpg_core_clk::sconf the mux table indices are also
> passed from platform specific initialization code.
>
> Also, mux flags are now passed to DEF_SD_MUX() as they will be later
> used by RZ/G3S.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - s/indexes/indices in commit description
> - mentioned in commit description that mux flags can now be passed to
>   driver though DEF_SD_MUX() macro
> - removed SoC specific names from macros' names
> - added spaces after { and before } when initializing arrays
> - preserved the order of .[gs]set_parent() API definitions for simpler
>   diff b/w versions
> - removed SD_MUX_NOTIF macro

Thanks for the update!

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c

> @@ -142,6 +146,77 @@ static void rzg2l_cpg_del_clk_provider(void *data)
>         of_clk_del_provider(data);
>  }
>
> +/* Must be called in atomic context. */
> +static int rzg2l_cpg_wait_clk_update_done(void __iomem *base, u32 conf)
> +{
> +       u32 bitmask = GENMASK(GET_WIDTH(conf) - 1, 0) << GET_SHIFT(conf);
> +       u32 off = GET_REG_OFFSET(conf);
> +       u32 val;
> +
> +       return readl_poll_timeout_atomic(base + off, val, !(val & bitmask), 10, 200);
> +}
> +
> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event,
> +                                 void *data)
> +{
> +       struct clk_notifier_data *cnd = data;
> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
> +       const u32 clk_src_266 = 3;
> +       unsigned long flags;
> +       u32 bitmask;
> +       int ret;
> +
> +       if (event != PRE_RATE_CHANGE || (cnd->new_rate / MEGA == 266))
> +               return 0;

include/linux/clk.h:

 * PRE_RATE_CHANGE - called immediately before the clk rate is changed,
 *     to indicate that the rate change will proceed.  Drivers must
 *     immediately terminate any operations that will be affected by the
 *     rate change.  Callbacks may either return NOTIFY_DONE, NOTIFY_OK,
 *     NOTIFY_STOP or NOTIFY_BAD.

> +
> +       spin_lock_irqsave(&priv->rmw_lock, flags);
> +
> +       /*
> +        * As per the HW manual, we should not directly switch from 533 MHz to
> +        * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
> +        * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
> +        * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
> +        * (400 MHz)).
> +        * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
> +        * switching register is prohibited.
> +        * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
> +        * the index to value mapping is done by adding 1 to the index.
> +        */
> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
> +       writel(bitmask | (clk_src_266 << shift), priv->base + off);
> +
> +       /* Wait for the update done. */
> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
> +
> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
> +
> +       if (ret)
> +               dev_err(priv->dev, "failed to switch to safe clk source\n");
> +
> +       return ret;

Likewise.

> +}

>
>  static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
>         .determine_rate = __clk_mux_determine_rate_closest,
> -       .set_parent     = rzg2l_cpg_sd_clk_mux_set_parent,
> -       .get_parent     = rzg2l_cpg_sd_clk_mux_get_parent,
> +       .set_parent     = rzg2l_cpg_sd_mux_clk_set_parent,
> +       .get_parent     = rzg2l_cpg_sd_mux_clk_get_parent,

Please keep the old names, for consistency with
__clk_mux_determine_rate_closest() and drivers/clk/clk-mux.c, and to
reduce the diff.

Any existing inconsistent use of "clk_mux" vs. "mux_clk" can be resolved
later with a separate patch, if anyone cares.

> --- a/drivers/clk/renesas/rzg2l-cpg.h
> +++ b/drivers/clk/renesas/rzg2l-cpg.h

> @@ -272,4 +276,6 @@ extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
>  extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
>  extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
>
> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);

rzg2l_cpg_sd_clk_mux_notifier()?

> +
>  #endif

The rest LGTM.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[Geert Uytterhoeven]

Hi Claudiu,

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
> by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
> The divider has some limitation for SDHI and OCTA clocks:
> - SD div cannot be 1 if parent rate is 800MHz
> - OCTA div cannot be 1 if parent rate is 400MHz
> For these clocks a notifier could be registered from platform specific
> clock driver and proper actions are taken before clock rate is changed,
> if needed.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - removed DIV_NOTIF macro

Thanks for the update!

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c
> @@ -91,6 +91,22 @@ struct sd_mux_hw_data {
>
>  #define to_sd_mux_hw_data(_hw) container_of(_hw, struct sd_mux_hw_data, hw_data)
>
> +/**
> + * struct div_hw_data - divider clock hardware data
> + * @hw_data: clock hw data
> + * @dtable: pointer to divider table
> + * @invalid_rate: invalid rate for divider
> + * @width: divider width
> + */
> +struct div_hw_data {
> +       struct clk_hw_data hw_data;
> +       const struct clk_div_table *dtable;
> +       unsigned long invalid_rate;
> +       u32 width;
> +};
> +
> +#define to_div_hw_data(_hw)    container_of(_hw, struct div_hw_data, hw_data)
> +
>  struct rzg2l_pll5_param {
>         u32 pl5_fracin;
>         u8 pl5_refdiv;
> @@ -200,6 +216,54 @@ int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event
>         return ret;
>  }
>
> +int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event,
> +                              void *data)
> +{
> +       struct clk_notifier_data *cnd = data;
> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
> +       u32 bitmask = GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
> +       unsigned long flags;
> +       int ret = 0;
> +       u32 val;
> +
> +       if (event != PRE_RATE_CHANGE || !div_hw_data->invalid_rate ||
> +           div_hw_data->invalid_rate % cnd->new_rate)
> +               return 0;

NOTIFY_DONE for event != PRE_RATE_CHANGE
NOTIFY_OK for the other cases

> +
> +       spin_lock_irqsave(&priv->rmw_lock, flags);
> +
> +       val = readl(priv->base + off);
> +       val >>= shift;
> +       val &= bitmask;
> +
> +       /*
> +        * There are different constraints for the user of this notifiers as follows:
> +        * 1/ SD div cannot be 1 (val == 0) if parent rate is 800MHz
> +        * 2/ OCTA div cannot be 1 (val == 0) if parent rate is 400MHz
> +        * As SD can have only one parent having 800MHz and OCTA div can have
> +        * only one parent having 400MHz we took into account the parent rate
> +        * at the beginning of function (by checking invalid_rate % new_rate).
> +        * Now it is time to check the hardware divider and update it accordingly.
> +        */
> +       if (!val) {
> +               writel(((bitmask << shift) << 16) | BIT(shift), priv->base + off);

Haven't you exchanged the (single) write-enable bit and the (multi-bit)
division ratio setting?  According to the docs, the write-enable bit
is at 16 + shift, while the division ratio is at shift.

Also, using bitmask as the division ratio means the maximum value
that fits in the bitfield, which would be a prohibited setting in case
of DIV_OCTA.

Now, looking at rzg3s_div_clk_set_rate() below, perhaps you just wanted
to set the ratio to value to 1, but used the wrong size for bitmask?

> +               /* Wait for the update done. */
> +               ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
> +       }
> +
> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
> +
> +       if (ret)
> +               dev_err(priv->dev, "Failed to downgrade the div\n");

and return NOTIFY_BAD

> +
> +       return ret;

NOTIFY_OK

> +}
> +
>  static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
>                                    struct rzg2l_cpg_priv *priv)
>  {
> @@ -217,6 +281,146 @@ static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk
>         return clk_notifier_register(hw->clk, nb);
>  }
>
> +static unsigned long rzg3s_div_clk_recalc_rate(struct clk_hw *hw,
> +                                              unsigned long parent_rate)
> +{
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 val;
> +
> +       val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
> +       val >>= GET_SHIFT(clk_hw_data->conf);
> +       val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
> +
> +       return divider_recalc_rate(hw, parent_rate, val, div_hw_data->dtable,
> +                                  CLK_DIVIDER_ROUND_CLOSEST, div_hw_data->width);
> +}
> +
> +static bool rzg3s_div_clk_is_rate_valid(const unsigned long invalid_rate, unsigned long rate)
> +{
> +       if (invalid_rate && rate >= invalid_rate)
> +               return false;
> +
> +       return true;
> +}
> +
> +static long rzg3s_div_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +                                    unsigned long *parent_rate)
> +{
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       long round_rate;
> +
> +       round_rate = divider_round_rate(hw, rate, parent_rate, div_hw_data->dtable,
> +                                       div_hw_data->width, CLK_DIVIDER_ROUND_CLOSEST);
> +
> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, round_rate))
> +               return -EINVAL;

Shouldn't this return the closest rate that is actually supported instead?

> +
> +       return round_rate;
> +}

But please implement .determine_rate() instead of .round_rate() in
new drivers.

> +
> +static int rzg3s_div_clk_set_rate(struct clk_hw *hw, unsigned long rate,
> +                                 unsigned long parent_rate)
> +{
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
> +       unsigned long flags;
> +       u32 bitmask, val;
> +       int ret;
> +
> +       /*
> +        * Some dividers cannot support some rates:
> +        * - SD div cannot support 800 MHz when parent is @800MHz and div = 1
> +        * - OCTA div cannot support 400 MHz when parent is @400MHz and div = 1
> +        * Check these scenarios.
> +        */
> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, rate))
> +               return -EINVAL;

Can this actually happen? Wouldn't the notifier have prevented us from
getting here?

> +
> +       val = divider_get_val(rate, parent_rate, div_hw_data->dtable, div_hw_data->width,
> +                             CLK_DIVIDER_ROUND_CLOSEST);
> +
> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;

Is bitmask the (single) write-enable bit?

If yes, that should be BIT(16 + shift), and the variable should be
renamed to reflect that.

I guess there should be a general "#define CPG_WEN BIT(16)", then you
can simply use

    writel((CPG_WEN | val) << shift, ...);

> +
> +       spin_lock_irqsave(&priv->rmw_lock, flags);
> +       writel(bitmask | (val << shift), priv->base + off);
> +       /* Wait for the update done. */
> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
> +
> +       return ret;
> +}
> +
> +static const struct clk_ops rzg3s_div_clk_ops = {
> +       .recalc_rate = rzg3s_div_clk_recalc_rate,
> +       .round_rate = rzg3s_div_clk_round_rate,
> +       .set_rate = rzg3s_div_clk_set_rate,
> +};
> +
> +static struct clk * __init
> +rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
> +                          void __iomem *base, struct rzg2l_cpg_priv *priv)
> +{
> +       struct div_hw_data *div_hw_data;
> +       struct clk_init_data init = {};
> +       const struct clk_div_table *clkt;
> +       struct clk_hw *clk_hw;
> +       const struct clk *parent;
> +       const char *parent_name;
> +       u32 max;
> +       int ret;
> +
> +       parent = clks[core->parent & 0xffff];
> +       if (IS_ERR(parent))
> +               return ERR_CAST(parent);
> +
> +       parent_name = __clk_get_name(parent);
> +
> +       div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
> +       if (!div_hw_data)
> +               return ERR_PTR(-ENOMEM);
> +
> +       init.name = core->name;
> +       init.flags = core->flag;
> +       init.ops = &rzg3s_div_clk_ops;
> +       init.parent_names = &parent_name;
> +       init.num_parents = 1;
> +
> +       /* Get the maximum divider to retrieve div width. */
> +       for (clkt = core->dtable; clkt->div; clkt++) {
> +               if (max < clkt->div)

"max" is used uninitialized

> +                       max = clkt->div;
> +       }
> +
> +       div_hw_data->hw_data.priv = priv;
> +       div_hw_data->hw_data.conf = core->conf;
> +       div_hw_data->hw_data.sconf = core->sconf;
> +       div_hw_data->dtable = core->dtable;
> +       div_hw_data->invalid_rate = core->invalid_rate;
> +       div_hw_data->width = fls(max) - 1;

Isn't that
> +
> +       clk_hw = &div_hw_data->hw_data.hw;
> +       clk_hw->init = &init;
> +
> +       ret = devm_clk_hw_register(priv->dev, clk_hw);
> +       if (ret)
> +               return ERR_PTR(ret);
> +
> +       ret = rzg2l_register_notifier(clk_hw, core, priv);
> +       if (ret) {
> +               dev_err(priv->dev, "Failed to register notifier for %s\n",
> +                       core->name);
> +               return ERR_PTR(ret);
> +       }
> +
> +       return clk_hw->clk;
> +}

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[Geert Uytterhoeven]

Hi Claudiu,

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
> by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
> The divider has some limitation for SDHI and OCTA clocks:
> - SD div cannot be 1 if parent rate is 800MHz
> - OCTA div cannot be 1 if parent rate is 400MHz
> For these clocks a notifier could be registered from platform specific
> clock driver and proper actions are taken before clock rate is changed,
> if needed.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - removed DIV_NOTIF macro

Thanks for the update!

> --- a/drivers/clk/renesas/rzg2l-cpg.c
> +++ b/drivers/clk/renesas/rzg2l-cpg.c
> @@ -91,6 +91,22 @@ struct sd_mux_hw_data {
>
>  #define to_sd_mux_hw_data(_hw) container_of(_hw, struct sd_mux_hw_data, hw_data)
>
> +/**
> + * struct div_hw_data - divider clock hardware data
> + * @hw_data: clock hw data
> + * @dtable: pointer to divider table
> + * @invalid_rate: invalid rate for divider
> + * @width: divider width
> + */
> +struct div_hw_data {
> +       struct clk_hw_data hw_data;
> +       const struct clk_div_table *dtable;
> +       unsigned long invalid_rate;
> +       u32 width;
> +};
> +
> +#define to_div_hw_data(_hw)    container_of(_hw, struct div_hw_data, hw_data)
> +
>  struct rzg2l_pll5_param {
>         u32 pl5_fracin;
>         u8 pl5_refdiv;
> @@ -200,6 +216,54 @@ int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event
>         return ret;
>  }
>
> +int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event,
> +                              void *data)
> +{
> +       struct clk_notifier_data *cnd = data;
> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
> +       u32 bitmask = GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
> +       unsigned long flags;
> +       int ret = 0;
> +       u32 val;
> +
> +       if (event != PRE_RATE_CHANGE || !div_hw_data->invalid_rate ||
> +           div_hw_data->invalid_rate % cnd->new_rate)
> +               return 0;

NOTIFY_DONE for event != PRE_RATE_CHANGE
NOTIFY_OK for the other cases

> +
> +       spin_lock_irqsave(&priv->rmw_lock, flags);
> +
> +       val = readl(priv->base + off);
> +       val >>= shift;
> +       val &= bitmask;
> +
> +       /*
> +        * There are different constraints for the user of this notifiers as follows:
> +        * 1/ SD div cannot be 1 (val == 0) if parent rate is 800MHz
> +        * 2/ OCTA div cannot be 1 (val == 0) if parent rate is 400MHz
> +        * As SD can have only one parent having 800MHz and OCTA div can have
> +        * only one parent having 400MHz we took into account the parent rate
> +        * at the beginning of function (by checking invalid_rate % new_rate).
> +        * Now it is time to check the hardware divider and update it accordingly.
> +        */
> +       if (!val) {
> +               writel(((bitmask << shift) << 16) | BIT(shift), priv->base + off);

Haven't you exchanged the (single) write-enable bit and the (multi-bit)
division ratio setting?  According to the docs, the write-enable bit
is at 16 + shift, while the division ratio is at shift.

Also, using bitmask as the division ratio means the maximum value
that fits in the bitfield, which would be a prohibited setting in case
of DIV_OCTA.

Now, looking at rzg3s_div_clk_set_rate() below, perhaps you just wanted
to set the ratio to value to 1, but used the wrong size for bitmask?

> +               /* Wait for the update done. */
> +               ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
> +       }
> +
> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
> +
> +       if (ret)
> +               dev_err(priv->dev, "Failed to downgrade the div\n");

and return NOTIFY_BAD

> +
> +       return ret;

NOTIFY_OK

> +}
> +
>  static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
>                                    struct rzg2l_cpg_priv *priv)
>  {
> @@ -217,6 +281,146 @@ static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk
>         return clk_notifier_register(hw->clk, nb);
>  }
>
> +static unsigned long rzg3s_div_clk_recalc_rate(struct clk_hw *hw,
> +                                              unsigned long parent_rate)
> +{
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 val;
> +
> +       val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
> +       val >>= GET_SHIFT(clk_hw_data->conf);
> +       val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
> +
> +       return divider_recalc_rate(hw, parent_rate, val, div_hw_data->dtable,
> +                                  CLK_DIVIDER_ROUND_CLOSEST, div_hw_data->width);
> +}
> +
> +static bool rzg3s_div_clk_is_rate_valid(const unsigned long invalid_rate, unsigned long rate)
> +{
> +       if (invalid_rate && rate >= invalid_rate)
> +               return false;
> +
> +       return true;
> +}
> +
> +static long rzg3s_div_clk_round_rate(struct clk_hw *hw, unsigned long rate,
> +                                    unsigned long *parent_rate)
> +{
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       long round_rate;
> +
> +       round_rate = divider_round_rate(hw, rate, parent_rate, div_hw_data->dtable,
> +                                       div_hw_data->width, CLK_DIVIDER_ROUND_CLOSEST);
> +
> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, round_rate))
> +               return -EINVAL;

Shouldn't this return the closest rate that is actually supported instead?

> +
> +       return round_rate;
> +}

But please implement .determine_rate() instead of .round_rate() in
new drivers.

> +
> +static int rzg3s_div_clk_set_rate(struct clk_hw *hw, unsigned long rate,
> +                                 unsigned long parent_rate)
> +{
> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
> +       unsigned long flags;
> +       u32 bitmask, val;
> +       int ret;
> +
> +       /*
> +        * Some dividers cannot support some rates:
> +        * - SD div cannot support 800 MHz when parent is @800MHz and div = 1
> +        * - OCTA div cannot support 400 MHz when parent is @400MHz and div = 1
> +        * Check these scenarios.
> +        */
> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, rate))
> +               return -EINVAL;

Can this actually happen? Wouldn't the notifier have prevented us from
getting here?

> +
> +       val = divider_get_val(rate, parent_rate, div_hw_data->dtable, div_hw_data->width,
> +                             CLK_DIVIDER_ROUND_CLOSEST);
> +
> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;

Is bitmask the (single) write-enable bit?

If yes, that should be BIT(16 + shift), and the variable should be
renamed to reflect that.

I guess there should be a general "#define CPG_WEN BIT(16)", then you
can simply use

    writel((CPG_WEN | val) << shift, ...);

> +
> +       spin_lock_irqsave(&priv->rmw_lock, flags);
> +       writel(bitmask | (val << shift), priv->base + off);
> +       /* Wait for the update done. */
> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
> +
> +       return ret;
> +}
> +
> +static const struct clk_ops rzg3s_div_clk_ops = {
> +       .recalc_rate = rzg3s_div_clk_recalc_rate,
> +       .round_rate = rzg3s_div_clk_round_rate,
> +       .set_rate = rzg3s_div_clk_set_rate,
> +};
> +
> +static struct clk * __init
> +rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
> +                          void __iomem *base, struct rzg2l_cpg_priv *priv)
> +{
> +       struct div_hw_data *div_hw_data;
> +       struct clk_init_data init = {};
> +       const struct clk_div_table *clkt;
> +       struct clk_hw *clk_hw;
> +       const struct clk *parent;
> +       const char *parent_name;
> +       u32 max;
> +       int ret;
> +
> +       parent = clks[core->parent & 0xffff];
> +       if (IS_ERR(parent))
> +               return ERR_CAST(parent);
> +
> +       parent_name = __clk_get_name(parent);
> +
> +       div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
> +       if (!div_hw_data)
> +               return ERR_PTR(-ENOMEM);
> +
> +       init.name = core->name;
> +       init.flags = core->flag;
> +       init.ops = &rzg3s_div_clk_ops;
> +       init.parent_names = &parent_name;
> +       init.num_parents = 1;
> +
> +       /* Get the maximum divider to retrieve div width. */
> +       for (clkt = core->dtable; clkt->div; clkt++) {
> +               if (max < clkt->div)

"max" is used uninitialized

> +                       max = clkt->div;
> +       }
> +
> +       div_hw_data->hw_data.priv = priv;
> +       div_hw_data->hw_data.conf = core->conf;
> +       div_hw_data->hw_data.sconf = core->sconf;
> +       div_hw_data->dtable = core->dtable;
> +       div_hw_data->invalid_rate = core->invalid_rate;
> +       div_hw_data->width = fls(max) - 1;

Isn't that
> +
> +       clk_hw = &div_hw_data->hw_data.hw;
> +       clk_hw->init = &init;
> +
> +       ret = devm_clk_hw_register(priv->dev, clk_hw);
> +       if (ret)
> +               return ERR_PTR(ret);
> +
> +       ret = rzg2l_register_notifier(clk_hw, core, priv);
> +       if (ret) {
> +               dev_err(priv->dev, "Failed to register notifier for %s\n",
> +                       core->name);
> +               return ERR_PTR(ret);
> +       }
> +
> +       return clk_hw->clk;
> +}

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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Re: [PATCH v2 12/28] dt-bindings: clock: renesas,rzg2l-cpg: document RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add documentation for RZ/G3S CPG. RZ/G3S CPG module is almost identical
> with the one available in RZ/G2{L, UL} the exception being some core
> clocks as follows:
> - SD clock is composed by a mux and a divider and the divider
>   has some limitation (div = 1 cannot be set if mux rate is 800MHz).
> - there are 3 SD clocks
> - OCTA and TSU clocks are specific to RZ/G3S
> - PLL1/4/6 are specific to RZ/G3S with its own computation formula
> Even with this RZ/G3S could use the same bindings as RZ/G2L.
>
> Along with documentation bindings for the RZ/G3S (R9A08G045) Clock Pulse
> Generator (CPG) core clocks, module clocks and resets were added.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Acked-by: Rob Herring <robh@kernel.org>
> ---
>
> Changes in v2:
> - collected Rob's tag
> - squashed with
>   [PATCH 21/37] dt-bindings: clock: add r9a08g045 CPG clocks and resets
>   from v1
> - updated commit message to reflect that bindings were also added to
>   this patch
> - removed R9A08G045_USB_SCLK
> - @Geert: please note I haven't collected your Rb tag as I did the squash

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in a branch shared by renesas-clk and renesas-dts for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 12/28] dt-bindings: clock: renesas,rzg2l-cpg: document RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add documentation for RZ/G3S CPG. RZ/G3S CPG module is almost identical
> with the one available in RZ/G2{L, UL} the exception being some core
> clocks as follows:
> - SD clock is composed by a mux and a divider and the divider
>   has some limitation (div = 1 cannot be set if mux rate is 800MHz).
> - there are 3 SD clocks
> - OCTA and TSU clocks are specific to RZ/G3S
> - PLL1/4/6 are specific to RZ/G3S with its own computation formula
> Even with this RZ/G3S could use the same bindings as RZ/G2L.
>
> Along with documentation bindings for the RZ/G3S (R9A08G045) Clock Pulse
> Generator (CPG) core clocks, module clocks and resets were added.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Acked-by: Rob Herring <robh@kernel.org>
> ---
>
> Changes in v2:
> - collected Rob's tag
> - squashed with
>   [PATCH 21/37] dt-bindings: clock: add r9a08g045 CPG clocks and resets
>   from v1
> - updated commit message to reflect that bindings were also added to
>   this patch
> - removed R9A08G045_USB_SCLK
> - @Geert: please note I haven't collected your Rb tag as I did the squash

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in a branch shared by renesas-clk and renesas-dts for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 13/28] clk: renesas: add minimal boot support for RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add minimal clock and reset support for RZ/G3S SoC to be able to boot
> Linux from SD Card/eMMC. This includes necessary core clocks for booting
> and GIC, SCIF, GPIO, SD0 mod clocks and resets.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - used RZ/G3S specific definition for CPG_CLKDIVSTATUS register
> - removed CLK_PLL3_DIV2_2, CLK_SD0_DIV, CLK_S0_DIV2
> - added space after { and before } in array initializations
> - s/indexes/indices/g
> - s/.osc/OSC and moved it in core output clocks section
> - s/.osc2/OSC2 and moved it in core output clock section
> - s/SD0_DIV4/.sd0_div4

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 13/28] clk: renesas: add minimal boot support for RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add minimal clock and reset support for RZ/G3S SoC to be able to boot
> Linux from SD Card/eMMC. This includes necessary core clocks for booting
> and GIC, SCIF, GPIO, SD0 mod clocks and resets.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - used RZ/G3S specific definition for CPG_CLKDIVSTATUS register
> - removed CLK_PLL3_DIV2_2, CLK_SD0_DIV, CLK_S0_DIV2
> - added space after { and before } in array initializations
> - s/indexes/indices/g
> - s/.osc/OSC and moved it in core output clocks section
> - s/.osc2/OSC2 and moved it in core output clock section
> - s/SD0_DIV4/.sd0_div4

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 14/28] pinctrl: renesas: rzg2l: index all registers based on port offset

[Geert Uytterhoeven]

Hi Claudiu,

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> To get address that needs to be read/write for specific port
> functionalities the P(), PM(), PMC(), PFC(), PIN(), IOLH() IEN(), ISEL()
> macros are used. Some of these macros received as argument the hardware
> port identifier, some hardware port offset address (e.g. ISEL() received
> port identifier, IOLH() received port offset address). This makes hard to
> extend the current driver for SoCs were port identifiers are not continuous
> in memory map of pin controller. This is the case for RZ/G3S pin controller
> were ports are mapped as follows:
>
> port offset    port identifier
> -----------    ---------------
> 0x20           P0
> 0x21           P5
> 0x22           P6
> 0x23           P11
> 0x24           P12
> 0x25           P13
> 0x26           P14
> 0x27           P15
> 0x28           P16
> 0x29           P17
> 0x2a           P18
> 0x30           P1
> 0x31           P2
> 0x32           P3
> 0x33           P4
> 0x34           P7
> 0x35           P8
> 0x36           P8
> 0x37           P10
>
> To make this achievable change all the above macros used to get the address
> of a port register for specific port functionality based on port hardware
> address. Shortly, all the above macros will get as argument the port
> offset address listed in the above table.
>
> With this RZG2L_SINGLE_PIN_GET_PORT_OFFSET(), RZG2L_PIN_ID_TO_PORT_OFFSET()
> and RZG2L_GPIO_PORT_GET_INDEX() were replaced by
> RZG2L_PIN_CFG_TO_PORT_OFFSET(), RZG2L_SINGLE_PIN_GET_CFGS() and
> RZG2L_GPIO_PORT_GET_CFGS() were replaced by RZG2L_PIN_CFG_TO_CAPS().
>
> Also rzg2l_pinctrl_set_pfc_mode() don't need port argument anymore.
> Also rzg2l_gpio_direction_input() and rzg2l_gpio_direction_output() don't
> need to translate port and bit locally as this can be done by
> rzg2l_gpio_set_direction().
>
> To use the same naming for port, bit/pin and register offset the
> port_offset variable names in different places was replaced by variable
> named off and there is no need to initialize anymore cfg and bit in
> different code places.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
>
> Changes in v2:
> - mentioned in commit description about the replacement of
>   RZG2L_GPIO_PORT_GET_INDEX() with RZG2L_PIN_CFG_TO_PORT_OFFSET()
> - moved variable declaration inside for()
> - got rid of local variable and used directly RZG2L_PIN_ID_TO_PORT() in
>   debug message from rzg2l_pinctrl_set_mux() function
> - collected tags

Thanks for the update! Sill queue in renesas-pinctrl-for-v6.7.

> --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> @@ -202,9 +202,11 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
>                                  unsigned int group_selector)
>  {
>         struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> +       const struct pinctrl_pin_desc *pin_desc;
> +       unsigned int *psel_val, *pin_data;
>         struct function_desc *func;
> -       unsigned int i, *psel_val;
>         struct group_desc *group;
> +       u32 pin, off;
>         int *pins;
>
>         func = pinmux_generic_get_function(pctldev, func_selector);
> @@ -217,12 +219,17 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
>         psel_val = func->data;
>         pins = group->pins;
>
> -       for (i = 0; i < group->num_pins; i++) {
> -               dev_dbg(pctrl->dev, "port:%u pin: %u PSEL:%u\n",
> -                       RZG2L_PIN_ID_TO_PORT(pins[i]), RZG2L_PIN_ID_TO_PIN(pins[i]),
> -                       psel_val[i]);
> -               rzg2l_pinctrl_set_pfc_mode(pctrl, RZG2L_PIN_ID_TO_PORT(pins[i]),
> -                                          RZG2L_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
> +       for (unsigned int i = 0; i < group->num_pins; i++) {
> +               pin_desc = &pctrl->desc.pins[pins[i]];
> +               pin_data = pin_desc->drv_data;
> +
> +               pin = RZG2L_PIN_ID_TO_PIN(pins[i]);
> +               off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);

In my comments on v1, I actually meant to combine these assignments
to variables with the variable declarations.  I will handle that while applying.

> +
> +               dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
> +                       RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i]);
> +
> +               rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i]);
>         }
>
>         return 0;

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 14/28] pinctrl: renesas: rzg2l: index all registers based on port offset

[Geert Uytterhoeven]

Hi Claudiu,

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> To get address that needs to be read/write for specific port
> functionalities the P(), PM(), PMC(), PFC(), PIN(), IOLH() IEN(), ISEL()
> macros are used. Some of these macros received as argument the hardware
> port identifier, some hardware port offset address (e.g. ISEL() received
> port identifier, IOLH() received port offset address). This makes hard to
> extend the current driver for SoCs were port identifiers are not continuous
> in memory map of pin controller. This is the case for RZ/G3S pin controller
> were ports are mapped as follows:
>
> port offset    port identifier
> -----------    ---------------
> 0x20           P0
> 0x21           P5
> 0x22           P6
> 0x23           P11
> 0x24           P12
> 0x25           P13
> 0x26           P14
> 0x27           P15
> 0x28           P16
> 0x29           P17
> 0x2a           P18
> 0x30           P1
> 0x31           P2
> 0x32           P3
> 0x33           P4
> 0x34           P7
> 0x35           P8
> 0x36           P8
> 0x37           P10
>
> To make this achievable change all the above macros used to get the address
> of a port register for specific port functionality based on port hardware
> address. Shortly, all the above macros will get as argument the port
> offset address listed in the above table.
>
> With this RZG2L_SINGLE_PIN_GET_PORT_OFFSET(), RZG2L_PIN_ID_TO_PORT_OFFSET()
> and RZG2L_GPIO_PORT_GET_INDEX() were replaced by
> RZG2L_PIN_CFG_TO_PORT_OFFSET(), RZG2L_SINGLE_PIN_GET_CFGS() and
> RZG2L_GPIO_PORT_GET_CFGS() were replaced by RZG2L_PIN_CFG_TO_CAPS().
>
> Also rzg2l_pinctrl_set_pfc_mode() don't need port argument anymore.
> Also rzg2l_gpio_direction_input() and rzg2l_gpio_direction_output() don't
> need to translate port and bit locally as this can be done by
> rzg2l_gpio_set_direction().
>
> To use the same naming for port, bit/pin and register offset the
> port_offset variable names in different places was replaced by variable
> named off and there is no need to initialize anymore cfg and bit in
> different code places.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
>
> Changes in v2:
> - mentioned in commit description about the replacement of
>   RZG2L_GPIO_PORT_GET_INDEX() with RZG2L_PIN_CFG_TO_PORT_OFFSET()
> - moved variable declaration inside for()
> - got rid of local variable and used directly RZG2L_PIN_ID_TO_PORT() in
>   debug message from rzg2l_pinctrl_set_mux() function
> - collected tags

Thanks for the update! Sill queue in renesas-pinctrl-for-v6.7.

> --- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> +++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
> @@ -202,9 +202,11 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
>                                  unsigned int group_selector)
>  {
>         struct rzg2l_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
> +       const struct pinctrl_pin_desc *pin_desc;
> +       unsigned int *psel_val, *pin_data;
>         struct function_desc *func;
> -       unsigned int i, *psel_val;
>         struct group_desc *group;
> +       u32 pin, off;
>         int *pins;
>
>         func = pinmux_generic_get_function(pctldev, func_selector);
> @@ -217,12 +219,17 @@ static int rzg2l_pinctrl_set_mux(struct pinctrl_dev *pctldev,
>         psel_val = func->data;
>         pins = group->pins;
>
> -       for (i = 0; i < group->num_pins; i++) {
> -               dev_dbg(pctrl->dev, "port:%u pin: %u PSEL:%u\n",
> -                       RZG2L_PIN_ID_TO_PORT(pins[i]), RZG2L_PIN_ID_TO_PIN(pins[i]),
> -                       psel_val[i]);
> -               rzg2l_pinctrl_set_pfc_mode(pctrl, RZG2L_PIN_ID_TO_PORT(pins[i]),
> -                                          RZG2L_PIN_ID_TO_PIN(pins[i]), psel_val[i]);
> +       for (unsigned int i = 0; i < group->num_pins; i++) {
> +               pin_desc = &pctrl->desc.pins[pins[i]];
> +               pin_data = pin_desc->drv_data;
> +
> +               pin = RZG2L_PIN_ID_TO_PIN(pins[i]);
> +               off = RZG2L_PIN_CFG_TO_PORT_OFFSET(*pin_data);

In my comments on v1, I actually meant to combine these assignments
to variables with the variable declarations.  I will handle that while applying.

> +
> +               dev_dbg(pctrl->dev, "port:%u pin: %u off:%x PSEL:%u\n",
> +                       RZG2L_PIN_ID_TO_PORT(pins[i]), pin, off, psel_val[i]);
> +
> +               rzg2l_pinctrl_set_pfc_mode(pctrl, pin, off, psel_val[i]);
>         }
>
>         return 0;

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
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Re: [PATCH v2 15/28] pinctrl: renesas: rzg2l: adapt for different SD/PWPR register offsets

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> SD, PWPR power registers have different offsets b/w RZ/G2L and RZ/G3S.
> Commit adds a per SoC configuration data structure that is initialized with
> proper register offset for individual SoCs. The struct rzg2l_hwcfg will be
> further extended in next commits.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Thanks, will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 15/28] pinctrl: renesas: rzg2l: adapt for different SD/PWPR register offsets

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> SD, PWPR power registers have different offsets b/w RZ/G2L and RZ/G3S.
> Commit adds a per SoC configuration data structure that is initialized with
> proper register offset for individual SoCs. The struct rzg2l_hwcfg will be
> further extended in next commits.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Thanks, will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 16/28] pinctrl: renesas: rzg2l: adapt function number for RZ/G3S

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> On RZ/G3S PFC register allow setting 8 functions for individual ports
> (function1 to function8). For function1 register need to be configured
> with 0, for function8 register need to be configured with 7.
> We cannot use zero based addressing when requesting functions from
> different code places as documentation (RZG3S_pinfunction_List_r1.0.xlsx)
> states explicitly that function0 is GPIO.
>
> For this add a new member to struct rzg2l_hwcfg that will keep the
> offset that need to be substracted before applying a value to PFC register.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - in commit description mentioned that function0 is GPIO
> - collected tags

Thanks, will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 16/28] pinctrl: renesas: rzg2l: adapt function number for RZ/G3S

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> On RZ/G3S PFC register allow setting 8 functions for individual ports
> (function1 to function8). For function1 register need to be configured
> with 0, for function8 register need to be configured with 7.
> We cannot use zero based addressing when requesting functions from
> different code places as documentation (RZG3S_pinfunction_List_r1.0.xlsx)
> states explicitly that function0 is GPIO.
>
> For this add a new member to struct rzg2l_hwcfg that will keep the
> offset that need to be substracted before applying a value to PFC register.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - in commit description mentioned that function0 is GPIO
> - collected tags

Thanks, will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> RZ/G3S supports different drive strength values for different power sources
> and pin groups (A, B, C). On each group there could be up to 4 drive
> strength values per power source. Available power sources are 1v8, 2v5,
> 3v3. Drive strength values are fine tuned than what was previously
> available on the driver thus the necessity of having micro-amp support.
> As drive strength and power source values are linked together the
> hardware setup for these was moved at the end of
> rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
> values.
>
> The drive strength values are expected to be initialized though SoC
> specific hardware configuration data structure.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - s/strenght/strength, s/togheter/together in commit description
> - got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
>   value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
> - removed spinlock in rzg2l_[sg]et_power_source()
> - introduced caps_to_pwr_reg() and simplified the code in
>   rzg2l_[sg]et_power_source()
> - changed return type of rzg2l_iolh_ua_to_val() to int and return
>   -EINVAL on failure cases
> - s/rzg2l_ds_supported/rzg2l_ds_is_supported
> - inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
>   strength and power source to hardware registers and thus simplified the
>   code
> - used devm_kcalloc() instead of devm_kzalloc()
> - adderessed the rest of the review comments

Thanks, will queue in renesas-pinctrl-for-v6.7, with Paul's comment
addresses.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> RZ/G3S supports different drive strength values for different power sources
> and pin groups (A, B, C). On each group there could be up to 4 drive
> strength values per power source. Available power sources are 1v8, 2v5,
> 3v3. Drive strength values are fine tuned than what was previously
> available on the driver thus the necessity of having micro-amp support.
> As drive strength and power source values are linked together the
> hardware setup for these was moved at the end of
> rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
> values.
>
> The drive strength values are expected to be initialized though SoC
> specific hardware configuration data structure.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - s/strenght/strength, s/togheter/together in commit description
> - got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
>   value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
> - removed spinlock in rzg2l_[sg]et_power_source()
> - introduced caps_to_pwr_reg() and simplified the code in
>   rzg2l_[sg]et_power_source()
> - changed return type of rzg2l_iolh_ua_to_val() to int and return
>   -EINVAL on failure cases
> - s/rzg2l_ds_supported/rzg2l_ds_is_supported
> - inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
>   strength and power source to hardware registers and thus simplified the
>   code
> - used devm_kcalloc() instead of devm_kzalloc()
> - adderessed the rest of the review comments

Thanks, will queue in renesas-pinctrl-for-v6.7, with Paul's comment
addresses.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 17/28] pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Move drive strength and output impedance values to SoC specific
> configuration data structure (struct rzg2l_hwcfg). This allows extending
> the drive strength support for RZ/G3S. Along with this the DS values
> were converted to uA for simple integration with RZ/G3S support.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - s/indexes/indices in code documentation
> - s/micro amps/uA in code documentation
> - added RZG2L_IOLH_MAX_DS_ENTRIES for "+ 4" statements in code
> - changed struct rzg2l_hwcfg::iolh_groupb_oi[] size to 4 to avoid
>   oversize it in next commits when RZG2L_IOLH_IDX_MAX will be increased
>   and thus avoiding issues when executing
>   "if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))" in
>   rzg2l_pinctrl_pinconf_set()
> - collected tags

Thanks, will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 17/28] pinctrl: renesas: rzg2l: move ds and oi to SoC specific configuration

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Move drive strength and output impedance values to SoC specific
> configuration data structure (struct rzg2l_hwcfg). This allows extending
> the drive strength support for RZ/G3S. Along with this the DS values
> were converted to uA for simple integration with RZ/G3S support.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - s/indexes/indices in code documentation
> - s/micro amps/uA in code documentation
> - added RZG2L_IOLH_MAX_DS_ENTRIES for "+ 4" statements in code
> - changed struct rzg2l_hwcfg::iolh_groupb_oi[] size to 4 to avoid
>   oversize it in next commits when RZG2L_IOLH_IDX_MAX will be increased
>   and thus avoiding issues when executing
>   "if (index == ARRAY_SIZE(hwcfg->iolh_groupb_oi))" in
>   rzg2l_pinctrl_pinconf_set()
> - collected tags

Thanks, will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 20/28] dt-bindings: pinctrl: renesas: document RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add documentation for pin controller found on RZ/G3S (R9A08G045) SoC.
> Compared with RZ/G2{L,UL} RZ/G3S has 82 general-purpose IOs, no slew
> rate and output impedance support and more values for drive strength
> which needs to be expressed in microamp.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - defined drive-strength-microamp as general and make if/then schema to
>   not allow specific properties depending on compatible

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 20/28] dt-bindings: pinctrl: renesas: document RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add documentation for pin controller found on RZ/G3S (R9A08G045) SoC.
> Compared with RZ/G2{L,UL} RZ/G3S has 82 general-purpose IOs, no slew
> rate and output impedance support and more values for drive strength
> which needs to be expressed in microamp.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - defined drive-strength-microamp as general and make if/then schema to
>   not allow specific properties depending on compatible

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
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Re: [PATCH v2 21/28] pinctrl: renesas: rzg2l: add support for RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add basic support for RZ/G3S to be able to boot from SD card, have a
> running console port and use GPIOs. RZ/G3S has 82 general-purpose IO
> ports. Support for the remaining pin functions (e.g. Ethernet, XSPI)
> will be added along with controller specific support.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - dropped [RZG2L_IOLH_IDX_2V5 ... RZG2L_IOLH_IDX_3V3 - 1] =
>   RZG2L_INVALID_IOLH_VAL initializations from v1 as these are not needed
>   anymore with the new code adjustements
> - added BUILD_BUG_ON() for r9a08g045_gpio_configs[] in
>   rzg2l_pinctrl_probe()

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 21/28] pinctrl: renesas: rzg2l: add support for RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add basic support for RZ/G3S to be able to boot from SD card, have a
> running console port and use GPIOs. RZ/G3S has 82 general-purpose IO
> ports. Support for the remaining pin functions (e.g. Ethernet, XSPI)
> will be added along with controller specific support.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - dropped [RZG2L_IOLH_IDX_2V5 ... RZG2L_IOLH_IDX_3V3 - 1] =
>   RZG2L_INVALID_IOLH_VAL initializations from v1 as these are not needed
>   anymore with the new code adjustements
> - added BUILD_BUG_ON() for r9a08g045_gpio_configs[] in
>   rzg2l_pinctrl_probe()

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-pinctrl-for-v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Document Renesas RZ/G3S SMARC SoM board which is based on RZ/G3S
> (R9A08G045S33) SoC.
>
> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - this patch is new in v2 and added as suggested by Geert

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 23/28] dt-bindings: arm: renesas: document RZ/G3S SMARC SoM

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Document Renesas RZ/G3S SMARC SoM board which is based on RZ/G3S
> (R9A08G045S33) SoC.
>
> Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - this patch is new in v2 and added as suggested by Geert

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 22/28] arm64: dts: renesas: add initial DTSI for RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial DTSI for RZ/G3S SoC. Files in commit has the following
> meaning:
> r9a08g045.dtsi          RZ/G3S family SoC common parts
> r9a08g045s33.dtsi       RZ/G3S R0A08G045S33 SoC specific parts
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Thanks, will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 22/28] arm64: dts: renesas: add initial DTSI for RZ/G3S SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial DTSI for RZ/G3S SoC. Files in commit has the following
> meaning:
> r9a08g045.dtsi          RZ/G3S family SoC common parts
> r9a08g045s33.dtsi       RZ/G3S R0A08G045S33 SoC specific parts
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Thanks, will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
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Re: [PATCH v2 24/28] arm64: dts: renesas: rzg3l-smarc-som: add initial support for RZ/G3S SMARC SoM

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial support for RZ/G3S SMARC SoM. The following devices available
> on SoM were added to this initial device tree:
>
> - RZ/G3S SoC: Renesas R9A08G045S33GBG
> - Clock Generator (only 24MHz output): Renesas 5L35023B
> - 1GiB LPDDR4 SDRAM: Micron MT53D512M16D1DS-046
> - 64GB eMMC Flash (though SD ch0): Micron MTFC64GBCAQTC
>
> SD channel 0 of RZ/G3S is connected to an uSD card interface
> and an eMMC. The selection b/w them is done though a hardware switch.
> The DT will select b/w uSD and eMMC though SW_SD0_DEV_SEL build flag.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - s/Carrier-II SoM/SoM in patch title
> - listed in commit description only devices addressed by this initial dtsi
> - s/8G LPDDR4/1GiB LPDDR4 in commit description
> - removed sd0-pwr-en-hog node and use specific GPIO in vcc_sdhi0 regulator
> - added SoM compatible:
>   compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 24/28] arm64: dts: renesas: rzg3l-smarc-som: add initial support for RZ/G3S SMARC SoM

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial support for RZ/G3S SMARC SoM. The following devices available
> on SoM were added to this initial device tree:
>
> - RZ/G3S SoC: Renesas R9A08G045S33GBG
> - Clock Generator (only 24MHz output): Renesas 5L35023B
> - 1GiB LPDDR4 SDRAM: Micron MT53D512M16D1DS-046
> - 64GB eMMC Flash (though SD ch0): Micron MTFC64GBCAQTC
>
> SD channel 0 of RZ/G3S is connected to an uSD card interface
> and an eMMC. The selection b/w them is done though a hardware switch.
> The DT will select b/w uSD and eMMC though SW_SD0_DEV_SEL build flag.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - s/Carrier-II SoM/SoM in patch title
> - listed in commit description only devices addressed by this initial dtsi
> - s/8G LPDDR4/1GiB LPDDR4 in commit description
> - removed sd0-pwr-en-hog node and use specific GPIO in vcc_sdhi0 regulator
> - added SoM compatible:
>   compatible = "renesas,rzg3s-smarcm", "renesas,r9a08g045s33", "renesas,r9a08g045";

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 25/28] arm64: dts: renesas: rzg3s-smarc: add initial device tree for RZ SMARC Carrier-II Board

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial device tree for RZ SMARC Carrier-II. At the moment it
> contains only serial interface.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - inversed the pin naming

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 25/28] arm64: dts: renesas: rzg3s-smarc: add initial device tree for RZ SMARC Carrier-II Board

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial device tree for RZ SMARC Carrier-II. At the moment it
> contains only serial interface.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - inversed the pin naming

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Document Renesas SMARC Carrier-II EVK board which is based on RZ/G3S
> SMARC SoM. The SMARC Carrier-II EVK consists of RZ/G3S SoM module and
> SMARC Carrier-II carrier board, the SoM module sits on top of carrier
> board.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - this patch is new in v2

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 26/28] dt-bindings: arm: renesas: document SMARC Carrier-II EVK

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Document Renesas SMARC Carrier-II EVK board which is based on RZ/G3S
> SMARC SoM. The SMARC Carrier-II EVK consists of RZ/G3S SoM module and
> SMARC Carrier-II carrier board, the SoM module sits on top of carrier
> board.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - this patch is new in v2

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 27/28] arm64: dts: renesas: r9a08g045s33-smarc: add initial device tree for RZ/G3S SMARC EVK board

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial device tree for RZ/G3S SMARC EVK board.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - modified compatible
> - @Geert: I haven't added you Rb tag as I've added
>   "renesas,rzg3s-smarcm" to the compatible list

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 27/28] arm64: dts: renesas: r9a08g045s33-smarc: add initial device tree for RZ/G3S SMARC EVK board

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Add initial device tree for RZ/G3S SMARC EVK board.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
>
> Changes in v2:
> - modified compatible
> - @Geert: I haven't added you Rb tag as I've added
>   "renesas,rzg3s-smarcm" to the compatible list

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 28/28] arm64: defconfig: enable RZ/G3S (R9A08G045) SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Enable config flag for Renesas RZ/G3S (R9A08G045) SoC.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 28/28] arm64: defconfig: enable RZ/G3S (R9A08G045) SoC

[Geert Uytterhoeven]

On Fri, Sep 29, 2023 at 7:40 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> Enable config flag for Renesas RZ/G3S (R9A08G045) SoC.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:
> - collected tags

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.7.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

Re: [PATCH v2 10/28] clk: renesas: rzg2l: refactor sd mux driver

[claudiu beznea]

Hi, Geert,

On 04.10.2023 14:30, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> Refactor SD MUX driver to be able to reuse the same code on RZ/G3S.
>> RZ/G2{L, UL} has a limitation with regards to switching the clock source
>> for SD MUX (MUX clock source has to be switched to 266MHz before switching
>> b/w 533MHz and 400MHz). This limitation has been introduced as a clock
>> notifier that is registered on platform based initialization data thus the
>> SD MUX code could be reused on RZ/G3S.
>>
>> As both RZ/G2{L, UL} and RZ/G3S has specific bits in specific registers
>> to check if the clock switching has been done, this configuration (register
>> offset, register bits and bits width) is now passed though
>> struct cpg_core_clk::sconf (status configuration) from platform specific
>> initialization code.
>>
>> Along with struct cpg_core_clk::sconf the mux table indices are also
>> passed from platform specific initialization code.
>>
>> Also, mux flags are now passed to DEF_SD_MUX() as they will be later
>> used by RZ/G3S.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - s/indexes/indices in commit description
>> - mentioned in commit description that mux flags can now be passed to
>>   driver though DEF_SD_MUX() macro
>> - removed SoC specific names from macros' names
>> - added spaces after { and before } when initializing arrays
>> - preserved the order of .[gs]set_parent() API definitions for simpler
>>   diff b/w versions
>> - removed SD_MUX_NOTIF macro
> 
> Thanks for the update!
> 
>> --- a/drivers/clk/renesas/rzg2l-cpg.c
>> +++ b/drivers/clk/renesas/rzg2l-cpg.c
> 
>> @@ -142,6 +146,77 @@ static void rzg2l_cpg_del_clk_provider(void *data)
>>         of_clk_del_provider(data);
>>  }
>>
>> +/* Must be called in atomic context. */
>> +static int rzg2l_cpg_wait_clk_update_done(void __iomem *base, u32 conf)
>> +{
>> +       u32 bitmask = GENMASK(GET_WIDTH(conf) - 1, 0) << GET_SHIFT(conf);
>> +       u32 off = GET_REG_OFFSET(conf);
>> +       u32 val;
>> +
>> +       return readl_poll_timeout_atomic(base + off, val, !(val & bitmask), 10, 200);
>> +}
>> +
>> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event,
>> +                                 void *data)
>> +{
>> +       struct clk_notifier_data *cnd = data;
>> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
>> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
>> +       const u32 clk_src_266 = 3;
>> +       unsigned long flags;
>> +       u32 bitmask;
>> +       int ret;
>> +
>> +       if (event != PRE_RATE_CHANGE || (cnd->new_rate / MEGA == 266))
>> +               return 0;
> 
> include/linux/clk.h:
> 
>  * PRE_RATE_CHANGE - called immediately before the clk rate is changed,
>  *     to indicate that the rate change will proceed.  Drivers must
>  *     immediately terminate any operations that will be affected by the
>  *     rate change.  Callbacks may either return NOTIFY_DONE, NOTIFY_OK,
>  *     NOTIFY_STOP or NOTIFY_BAD.

Indeed I missed these.

> 
>> +
>> +       spin_lock_irqsave(&priv->rmw_lock, flags);
>> +
>> +       /*
>> +        * As per the HW manual, we should not directly switch from 533 MHz to
>> +        * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
>> +        * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
>> +        * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
>> +        * (400 MHz)).
>> +        * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
>> +        * switching register is prohibited.
>> +        * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
>> +        * the index to value mapping is done by adding 1 to the index.
>> +        */
>> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
>> +       writel(bitmask | (clk_src_266 << shift), priv->base + off);
>> +
>> +       /* Wait for the update done. */
>> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
>> +
>> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
>> +
>> +       if (ret)
>> +               dev_err(priv->dev, "failed to switch to safe clk source\n");
>> +
>> +       return ret;
> 
> Likewise.
> 
>> +}
> 
>>
>>  static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
>>         .determine_rate = __clk_mux_determine_rate_closest,
>> -       .set_parent     = rzg2l_cpg_sd_clk_mux_set_parent,
>> -       .get_parent     = rzg2l_cpg_sd_clk_mux_get_parent,
>> +       .set_parent     = rzg2l_cpg_sd_mux_clk_set_parent,
>> +       .get_parent     = rzg2l_cpg_sd_mux_clk_get_parent,
> 
> Please keep the old names, for consistency with
> __clk_mux_determine_rate_closest() and drivers/clk/clk-mux.c, and to
> reduce the diff.
> 
> Any existing inconsistent use of "clk_mux" vs. "mux_clk" can be resolved
> later with a separate patch, if anyone cares.

ok

> 
>> --- a/drivers/clk/renesas/rzg2l-cpg.h
>> +++ b/drivers/clk/renesas/rzg2l-cpg.h
> 
>> @@ -272,4 +276,6 @@ extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
>>  extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
>>  extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
>>
>> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
> 
> rzg2l_cpg_sd_clk_mux_notifier()?

ok

> 
>> +
>>  #endif
> 
> The rest LGTM.
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

Re: [PATCH v2 10/28] clk: renesas: rzg2l: refactor sd mux driver

[claudiu beznea]

Hi, Geert,

On 04.10.2023 14:30, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> Refactor SD MUX driver to be able to reuse the same code on RZ/G3S.
>> RZ/G2{L, UL} has a limitation with regards to switching the clock source
>> for SD MUX (MUX clock source has to be switched to 266MHz before switching
>> b/w 533MHz and 400MHz). This limitation has been introduced as a clock
>> notifier that is registered on platform based initialization data thus the
>> SD MUX code could be reused on RZ/G3S.
>>
>> As both RZ/G2{L, UL} and RZ/G3S has specific bits in specific registers
>> to check if the clock switching has been done, this configuration (register
>> offset, register bits and bits width) is now passed though
>> struct cpg_core_clk::sconf (status configuration) from platform specific
>> initialization code.
>>
>> Along with struct cpg_core_clk::sconf the mux table indices are also
>> passed from platform specific initialization code.
>>
>> Also, mux flags are now passed to DEF_SD_MUX() as they will be later
>> used by RZ/G3S.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - s/indexes/indices in commit description
>> - mentioned in commit description that mux flags can now be passed to
>>   driver though DEF_SD_MUX() macro
>> - removed SoC specific names from macros' names
>> - added spaces after { and before } when initializing arrays
>> - preserved the order of .[gs]set_parent() API definitions for simpler
>>   diff b/w versions
>> - removed SD_MUX_NOTIF macro
> 
> Thanks for the update!
> 
>> --- a/drivers/clk/renesas/rzg2l-cpg.c
>> +++ b/drivers/clk/renesas/rzg2l-cpg.c
> 
>> @@ -142,6 +146,77 @@ static void rzg2l_cpg_del_clk_provider(void *data)
>>         of_clk_del_provider(data);
>>  }
>>
>> +/* Must be called in atomic context. */
>> +static int rzg2l_cpg_wait_clk_update_done(void __iomem *base, u32 conf)
>> +{
>> +       u32 bitmask = GENMASK(GET_WIDTH(conf) - 1, 0) << GET_SHIFT(conf);
>> +       u32 off = GET_REG_OFFSET(conf);
>> +       u32 val;
>> +
>> +       return readl_poll_timeout_atomic(base + off, val, !(val & bitmask), 10, 200);
>> +}
>> +
>> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event,
>> +                                 void *data)
>> +{
>> +       struct clk_notifier_data *cnd = data;
>> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
>> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
>> +       const u32 clk_src_266 = 3;
>> +       unsigned long flags;
>> +       u32 bitmask;
>> +       int ret;
>> +
>> +       if (event != PRE_RATE_CHANGE || (cnd->new_rate / MEGA == 266))
>> +               return 0;
> 
> include/linux/clk.h:
> 
>  * PRE_RATE_CHANGE - called immediately before the clk rate is changed,
>  *     to indicate that the rate change will proceed.  Drivers must
>  *     immediately terminate any operations that will be affected by the
>  *     rate change.  Callbacks may either return NOTIFY_DONE, NOTIFY_OK,
>  *     NOTIFY_STOP or NOTIFY_BAD.

Indeed I missed these.

> 
>> +
>> +       spin_lock_irqsave(&priv->rmw_lock, flags);
>> +
>> +       /*
>> +        * As per the HW manual, we should not directly switch from 533 MHz to
>> +        * 400 MHz and vice versa. To change the setting from 2’b01 (533 MHz)
>> +        * to 2’b10 (400 MHz) or vice versa, Switch to 2’b11 (266 MHz) first,
>> +        * and then switch to the target setting (2’b01 (533 MHz) or 2’b10
>> +        * (400 MHz)).
>> +        * Setting a value of '0' to the SEL_SDHI0_SET or SEL_SDHI1_SET clock
>> +        * switching register is prohibited.
>> +        * The clock mux has 3 input clocks(533 MHz, 400 MHz, and 266 MHz), and
>> +        * the index to value mapping is done by adding 1 to the index.
>> +        */
>> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
>> +       writel(bitmask | (clk_src_266 << shift), priv->base + off);
>> +
>> +       /* Wait for the update done. */
>> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
>> +
>> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
>> +
>> +       if (ret)
>> +               dev_err(priv->dev, "failed to switch to safe clk source\n");
>> +
>> +       return ret;
> 
> Likewise.
> 
>> +}
> 
>>
>>  static const struct clk_ops rzg2l_cpg_sd_clk_mux_ops = {
>>         .determine_rate = __clk_mux_determine_rate_closest,
>> -       .set_parent     = rzg2l_cpg_sd_clk_mux_set_parent,
>> -       .get_parent     = rzg2l_cpg_sd_clk_mux_get_parent,
>> +       .set_parent     = rzg2l_cpg_sd_mux_clk_set_parent,
>> +       .get_parent     = rzg2l_cpg_sd_mux_clk_get_parent,
> 
> Please keep the old names, for consistency with
> __clk_mux_determine_rate_closest() and drivers/clk/clk-mux.c, and to
> reduce the diff.
> 
> Any existing inconsistent use of "clk_mux" vs. "mux_clk" can be resolved
> later with a separate patch, if anyone cares.

ok

> 
>> --- a/drivers/clk/renesas/rzg2l-cpg.h
>> +++ b/drivers/clk/renesas/rzg2l-cpg.h
> 
>> @@ -272,4 +276,6 @@ extern const struct rzg2l_cpg_info r9a07g044_cpg_info;
>>  extern const struct rzg2l_cpg_info r9a07g054_cpg_info;
>>  extern const struct rzg2l_cpg_info r9a09g011_cpg_info;
>>
>> +int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event, void *data);
> 
> rzg2l_cpg_sd_clk_mux_notifier()?

ok

> 
>> +
>>  #endif
> 
> The rest LGTM.
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                 -- Linus Torvalds

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Re: [PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[claudiu beznea]

Hi, Geert,

On 04.10.2023 15:30, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
>> by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
>> The divider has some limitation for SDHI and OCTA clocks:
>> - SD div cannot be 1 if parent rate is 800MHz
>> - OCTA div cannot be 1 if parent rate is 400MHz
>> For these clocks a notifier could be registered from platform specific
>> clock driver and proper actions are taken before clock rate is changed,
>> if needed.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - removed DIV_NOTIF macro
> 
> Thanks for the update!
> 
>> --- a/drivers/clk/renesas/rzg2l-cpg.c
>> +++ b/drivers/clk/renesas/rzg2l-cpg.c
>> @@ -91,6 +91,22 @@ struct sd_mux_hw_data {
>>
>>  #define to_sd_mux_hw_data(_hw) container_of(_hw, struct sd_mux_hw_data, hw_data)
>>
>> +/**
>> + * struct div_hw_data - divider clock hardware data
>> + * @hw_data: clock hw data
>> + * @dtable: pointer to divider table
>> + * @invalid_rate: invalid rate for divider
>> + * @width: divider width
>> + */
>> +struct div_hw_data {
>> +       struct clk_hw_data hw_data;
>> +       const struct clk_div_table *dtable;
>> +       unsigned long invalid_rate;
>> +       u32 width;
>> +};
>> +
>> +#define to_div_hw_data(_hw)    container_of(_hw, struct div_hw_data, hw_data)
>> +
>>  struct rzg2l_pll5_param {
>>         u32 pl5_fracin;
>>         u8 pl5_refdiv;
>> @@ -200,6 +216,54 @@ int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event
>>         return ret;
>>  }
>>
>> +int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event,
>> +                              void *data)
>> +{
>> +       struct clk_notifier_data *cnd = data;
>> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
>> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
>> +       u32 bitmask = GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
>> +       unsigned long flags;
>> +       int ret = 0;
>> +       u32 val;
>> +
>> +       if (event != PRE_RATE_CHANGE || !div_hw_data->invalid_rate ||
>> +           div_hw_data->invalid_rate % cnd->new_rate)
>> +               return 0;
> 
> NOTIFY_DONE for event != PRE_RATE_CHANGE
> NOTIFY_OK for the other cases

Sure!

> 
>> +
>> +       spin_lock_irqsave(&priv->rmw_lock, flags);
>> +
>> +       val = readl(priv->base + off);
>> +       val >>= shift;
>> +       val &= bitmask;
>> +
>> +       /*
>> +        * There are different constraints for the user of this notifiers as follows:
>> +        * 1/ SD div cannot be 1 (val == 0) if parent rate is 800MHz
>> +        * 2/ OCTA div cannot be 1 (val == 0) if parent rate is 400MHz
>> +        * As SD can have only one parent having 800MHz and OCTA div can have
>> +        * only one parent having 400MHz we took into account the parent rate
>> +        * at the beginning of function (by checking invalid_rate % new_rate).
>> +        * Now it is time to check the hardware divider and update it accordingly.
>> +        */
>> +       if (!val) {
>> +               writel(((bitmask << shift) << 16) | BIT(shift), priv->base + off);
> 
> Haven't you exchanged the (single) write-enable bit and the (multi-bit)
> division ratio setting?  According to the docs, the write-enable bit
> is at 16 + shift, while the division ratio is at shift.

Indeed, I messed this up. Though, I've tested quite some use cases and they
all worked... I'll review this anyway, thanks for pointing it up.

> 
> Also, using bitmask as the division ratio means the maximum value
> that fits in the bitfield, which would be a prohibited setting in case
> of DIV_OCTA.
> 
> Now, looking at rzg3s_div_clk_set_rate() below, perhaps you just wanted
> to set the ratio to value to 1, but used the wrong size for bitmask?

Yes, the idea was to set a safe divider.

> 
>> +               /* Wait for the update done. */
>> +               ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
>> +       }
>> +
>> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
>> +
>> +       if (ret)
>> +               dev_err(priv->dev, "Failed to downgrade the div\n");
> 
> and return NOTIFY_BAD

Sure!

> 
>> +
>> +       return ret;
> 
> NOTIFY_OK

Sure!

> 
>> +}
>> +
>>  static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
>>                                    struct rzg2l_cpg_priv *priv)
>>  {
>> @@ -217,6 +281,146 @@ static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk
>>         return clk_notifier_register(hw->clk, nb);
>>  }
>>
>> +static unsigned long rzg3s_div_clk_recalc_rate(struct clk_hw *hw,
>> +                                              unsigned long parent_rate)
>> +{
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 val;
>> +
>> +       val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
>> +       val >>= GET_SHIFT(clk_hw_data->conf);
>> +       val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
>> +
>> +       return divider_recalc_rate(hw, parent_rate, val, div_hw_data->dtable,
>> +                                  CLK_DIVIDER_ROUND_CLOSEST, div_hw_data->width);
>> +}
>> +
>> +static bool rzg3s_div_clk_is_rate_valid(const unsigned long invalid_rate, unsigned long rate)
>> +{
>> +       if (invalid_rate && rate >= invalid_rate)
>> +               return false;
>> +
>> +       return true;
>> +}
>> +
>> +static long rzg3s_div_clk_round_rate(struct clk_hw *hw, unsigned long rate,
>> +                                    unsigned long *parent_rate)
>> +{
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       long round_rate;
>> +
>> +       round_rate = divider_round_rate(hw, rate, parent_rate, div_hw_data->dtable,
>> +                                       div_hw_data->width, CLK_DIVIDER_ROUND_CLOSEST);
>> +
>> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, round_rate))
>> +               return -EINVAL;
> 
> Shouldn't this return the closest rate that is actually supported instead?

The divider_round_rate() already choose it as the closest rate that it is
actually not supported, thus I chose to just return -EINVAL. I chose it
this way to use divider_round_rate(). Don't know if there is way around
this using divider_round_rate() I'll have a look.

> 
>> +
>> +       return round_rate;
>> +}
> 
> But please implement .determine_rate() instead of .round_rate() in
> new drivers.

Indeed, I missed this one.

> 
>> +
>> +static int rzg3s_div_clk_set_rate(struct clk_hw *hw, unsigned long rate,
>> +                                 unsigned long parent_rate)
>> +{
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
>> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
>> +       unsigned long flags;
>> +       u32 bitmask, val;
>> +       int ret;
>> +
>> +       /*
>> +        * Some dividers cannot support some rates:
>> +        * - SD div cannot support 800 MHz when parent is @800MHz and div = 1
>> +        * - OCTA div cannot support 400 MHz when parent is @400MHz and div = 1
>> +        * Check these scenarios.
>> +        */
>> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, rate))
>> +               return -EINVAL;
> 
> Can this actually happen? Wouldn't the notifier have prevented us from
> getting here?

I remember I added it here as a result of testing. I'll double check it.

> 
>> +
>> +       val = divider_get_val(rate, parent_rate, div_hw_data->dtable, div_hw_data->width,
>> +                             CLK_DIVIDER_ROUND_CLOSEST);
>> +
>> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
> 
> Is bitmask the (single) write-enable bit?
> 
> If yes, that should be BIT(16 + shift), and the variable should be
> renamed to reflect that.
> 
> I guess there should be a general "#define CPG_WEN BIT(16)", then you
> can simply use
> 
>     writel((CPG_WEN | val) << shift, ...);

OK.

> 
>> +
>> +       spin_lock_irqsave(&priv->rmw_lock, flags);
>> +       writel(bitmask | (val << shift), priv->base + off);
>> +       /* Wait for the update done. */
>> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
>> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
>> +
>> +       return ret;
>> +}
>> +
>> +static const struct clk_ops rzg3s_div_clk_ops = {
>> +       .recalc_rate = rzg3s_div_clk_recalc_rate,
>> +       .round_rate = rzg3s_div_clk_round_rate,
>> +       .set_rate = rzg3s_div_clk_set_rate,
>> +};
>> +
>> +static struct clk * __init
>> +rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
>> +                          void __iomem *base, struct rzg2l_cpg_priv *priv)
>> +{
>> +       struct div_hw_data *div_hw_data;
>> +       struct clk_init_data init = {};
>> +       const struct clk_div_table *clkt;
>> +       struct clk_hw *clk_hw;
>> +       const struct clk *parent;
>> +       const char *parent_name;
>> +       u32 max;
>> +       int ret;
>> +
>> +       parent = clks[core->parent & 0xffff];
>> +       if (IS_ERR(parent))
>> +               return ERR_CAST(parent);
>> +
>> +       parent_name = __clk_get_name(parent);
>> +
>> +       div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
>> +       if (!div_hw_data)
>> +               return ERR_PTR(-ENOMEM);
>> +
>> +       init.name = core->name;
>> +       init.flags = core->flag;
>> +       init.ops = &rzg3s_div_clk_ops;
>> +       init.parent_names = &parent_name;
>> +       init.num_parents = 1;
>> +
>> +       /* Get the maximum divider to retrieve div width. */
>> +       for (clkt = core->dtable; clkt->div; clkt++) {
>> +               if (max < clkt->div)
> 
> "max" is used uninitialized

Yes, you're right.

Thank you for your review,
Claudiu Beznea

> 
>> +                       max = clkt->div;
>> +       }
>> +
>> +       div_hw_data->hw_data.priv = priv;
>> +       div_hw_data->hw_data.conf = core->conf;
>> +       div_hw_data->hw_data.sconf = core->sconf;
>> +       div_hw_data->dtable = core->dtable;
>> +       div_hw_data->invalid_rate = core->invalid_rate;
>> +       div_hw_data->width = fls(max) - 1;
> 
> Isn't that
>> +
>> +       clk_hw = &div_hw_data->hw_data.hw;
>> +       clk_hw->init = &init;
>> +
>> +       ret = devm_clk_hw_register(priv->dev, clk_hw);
>> +       if (ret)
>> +               return ERR_PTR(ret);
>> +
>> +       ret = rzg2l_register_notifier(clk_hw, core, priv);
>> +       if (ret) {
>> +               dev_err(priv->dev, "Failed to register notifier for %s\n",
>> +                       core->name);
>> +               return ERR_PTR(ret);
>> +       }
>> +
>> +       return clk_hw->clk;
>> +}
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 

Re: [PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[claudiu beznea]

Hi, Geert,

On 04.10.2023 15:30, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
>> by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
>> The divider has some limitation for SDHI and OCTA clocks:
>> - SD div cannot be 1 if parent rate is 800MHz
>> - OCTA div cannot be 1 if parent rate is 400MHz
>> For these clocks a notifier could be registered from platform specific
>> clock driver and proper actions are taken before clock rate is changed,
>> if needed.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - removed DIV_NOTIF macro
> 
> Thanks for the update!
> 
>> --- a/drivers/clk/renesas/rzg2l-cpg.c
>> +++ b/drivers/clk/renesas/rzg2l-cpg.c
>> @@ -91,6 +91,22 @@ struct sd_mux_hw_data {
>>
>>  #define to_sd_mux_hw_data(_hw) container_of(_hw, struct sd_mux_hw_data, hw_data)
>>
>> +/**
>> + * struct div_hw_data - divider clock hardware data
>> + * @hw_data: clock hw data
>> + * @dtable: pointer to divider table
>> + * @invalid_rate: invalid rate for divider
>> + * @width: divider width
>> + */
>> +struct div_hw_data {
>> +       struct clk_hw_data hw_data;
>> +       const struct clk_div_table *dtable;
>> +       unsigned long invalid_rate;
>> +       u32 width;
>> +};
>> +
>> +#define to_div_hw_data(_hw)    container_of(_hw, struct div_hw_data, hw_data)
>> +
>>  struct rzg2l_pll5_param {
>>         u32 pl5_fracin;
>>         u8 pl5_refdiv;
>> @@ -200,6 +216,54 @@ int rzg2l_cpg_sd_mux_clk_notifier(struct notifier_block *nb, unsigned long event
>>         return ret;
>>  }
>>
>> +int rzg3s_cpg_div_clk_notifier(struct notifier_block *nb, unsigned long event,
>> +                              void *data)
>> +{
>> +       struct clk_notifier_data *cnd = data;
>> +       struct clk_hw *hw = __clk_get_hw(cnd->clk);
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
>> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
>> +       u32 bitmask = GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
>> +       unsigned long flags;
>> +       int ret = 0;
>> +       u32 val;
>> +
>> +       if (event != PRE_RATE_CHANGE || !div_hw_data->invalid_rate ||
>> +           div_hw_data->invalid_rate % cnd->new_rate)
>> +               return 0;
> 
> NOTIFY_DONE for event != PRE_RATE_CHANGE
> NOTIFY_OK for the other cases

Sure!

> 
>> +
>> +       spin_lock_irqsave(&priv->rmw_lock, flags);
>> +
>> +       val = readl(priv->base + off);
>> +       val >>= shift;
>> +       val &= bitmask;
>> +
>> +       /*
>> +        * There are different constraints for the user of this notifiers as follows:
>> +        * 1/ SD div cannot be 1 (val == 0) if parent rate is 800MHz
>> +        * 2/ OCTA div cannot be 1 (val == 0) if parent rate is 400MHz
>> +        * As SD can have only one parent having 800MHz and OCTA div can have
>> +        * only one parent having 400MHz we took into account the parent rate
>> +        * at the beginning of function (by checking invalid_rate % new_rate).
>> +        * Now it is time to check the hardware divider and update it accordingly.
>> +        */
>> +       if (!val) {
>> +               writel(((bitmask << shift) << 16) | BIT(shift), priv->base + off);
> 
> Haven't you exchanged the (single) write-enable bit and the (multi-bit)
> division ratio setting?  According to the docs, the write-enable bit
> is at 16 + shift, while the division ratio is at shift.

Indeed, I messed this up. Though, I've tested quite some use cases and they
all worked... I'll review this anyway, thanks for pointing it up.

> 
> Also, using bitmask as the division ratio means the maximum value
> that fits in the bitfield, which would be a prohibited setting in case
> of DIV_OCTA.
> 
> Now, looking at rzg3s_div_clk_set_rate() below, perhaps you just wanted
> to set the ratio to value to 1, but used the wrong size for bitmask?

Yes, the idea was to set a safe divider.

> 
>> +               /* Wait for the update done. */
>> +               ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
>> +       }
>> +
>> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
>> +
>> +       if (ret)
>> +               dev_err(priv->dev, "Failed to downgrade the div\n");
> 
> and return NOTIFY_BAD

Sure!

> 
>> +
>> +       return ret;
> 
> NOTIFY_OK

Sure!

> 
>> +}
>> +
>>  static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk *core,
>>                                    struct rzg2l_cpg_priv *priv)
>>  {
>> @@ -217,6 +281,146 @@ static int rzg2l_register_notifier(struct clk_hw *hw, const struct cpg_core_clk
>>         return clk_notifier_register(hw->clk, nb);
>>  }
>>
>> +static unsigned long rzg3s_div_clk_recalc_rate(struct clk_hw *hw,
>> +                                              unsigned long parent_rate)
>> +{
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 val;
>> +
>> +       val = readl(priv->base + GET_REG_OFFSET(clk_hw_data->conf));
>> +       val >>= GET_SHIFT(clk_hw_data->conf);
>> +       val &= GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0);
>> +
>> +       return divider_recalc_rate(hw, parent_rate, val, div_hw_data->dtable,
>> +                                  CLK_DIVIDER_ROUND_CLOSEST, div_hw_data->width);
>> +}
>> +
>> +static bool rzg3s_div_clk_is_rate_valid(const unsigned long invalid_rate, unsigned long rate)
>> +{
>> +       if (invalid_rate && rate >= invalid_rate)
>> +               return false;
>> +
>> +       return true;
>> +}
>> +
>> +static long rzg3s_div_clk_round_rate(struct clk_hw *hw, unsigned long rate,
>> +                                    unsigned long *parent_rate)
>> +{
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       long round_rate;
>> +
>> +       round_rate = divider_round_rate(hw, rate, parent_rate, div_hw_data->dtable,
>> +                                       div_hw_data->width, CLK_DIVIDER_ROUND_CLOSEST);
>> +
>> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, round_rate))
>> +               return -EINVAL;
> 
> Shouldn't this return the closest rate that is actually supported instead?

The divider_round_rate() already choose it as the closest rate that it is
actually not supported, thus I chose to just return -EINVAL. I chose it
this way to use divider_round_rate(). Don't know if there is way around
this using divider_round_rate() I'll have a look.

> 
>> +
>> +       return round_rate;
>> +}
> 
> But please implement .determine_rate() instead of .round_rate() in
> new drivers.

Indeed, I missed this one.

> 
>> +
>> +static int rzg3s_div_clk_set_rate(struct clk_hw *hw, unsigned long rate,
>> +                                 unsigned long parent_rate)
>> +{
>> +       struct clk_hw_data *clk_hw_data = to_clk_hw_data(hw);
>> +       struct div_hw_data *div_hw_data = to_div_hw_data(clk_hw_data);
>> +       struct rzg2l_cpg_priv *priv = clk_hw_data->priv;
>> +       u32 off = GET_REG_OFFSET(clk_hw_data->conf);
>> +       u32 shift = GET_SHIFT(clk_hw_data->conf);
>> +       unsigned long flags;
>> +       u32 bitmask, val;
>> +       int ret;
>> +
>> +       /*
>> +        * Some dividers cannot support some rates:
>> +        * - SD div cannot support 800 MHz when parent is @800MHz and div = 1
>> +        * - OCTA div cannot support 400 MHz when parent is @400MHz and div = 1
>> +        * Check these scenarios.
>> +        */
>> +       if (!rzg3s_div_clk_is_rate_valid(div_hw_data->invalid_rate, rate))
>> +               return -EINVAL;
> 
> Can this actually happen? Wouldn't the notifier have prevented us from
> getting here?

I remember I added it here as a result of testing. I'll double check it.

> 
>> +
>> +       val = divider_get_val(rate, parent_rate, div_hw_data->dtable, div_hw_data->width,
>> +                             CLK_DIVIDER_ROUND_CLOSEST);
>> +
>> +       bitmask = (GENMASK(GET_WIDTH(clk_hw_data->conf) - 1, 0) << shift) << 16;
> 
> Is bitmask the (single) write-enable bit?
> 
> If yes, that should be BIT(16 + shift), and the variable should be
> renamed to reflect that.
> 
> I guess there should be a general "#define CPG_WEN BIT(16)", then you
> can simply use
> 
>     writel((CPG_WEN | val) << shift, ...);

OK.

> 
>> +
>> +       spin_lock_irqsave(&priv->rmw_lock, flags);
>> +       writel(bitmask | (val << shift), priv->base + off);
>> +       /* Wait for the update done. */
>> +       ret = rzg2l_cpg_wait_clk_update_done(priv->base, clk_hw_data->sconf);
>> +       spin_unlock_irqrestore(&priv->rmw_lock, flags);
>> +
>> +       return ret;
>> +}
>> +
>> +static const struct clk_ops rzg3s_div_clk_ops = {
>> +       .recalc_rate = rzg3s_div_clk_recalc_rate,
>> +       .round_rate = rzg3s_div_clk_round_rate,
>> +       .set_rate = rzg3s_div_clk_set_rate,
>> +};
>> +
>> +static struct clk * __init
>> +rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
>> +                          void __iomem *base, struct rzg2l_cpg_priv *priv)
>> +{
>> +       struct div_hw_data *div_hw_data;
>> +       struct clk_init_data init = {};
>> +       const struct clk_div_table *clkt;
>> +       struct clk_hw *clk_hw;
>> +       const struct clk *parent;
>> +       const char *parent_name;
>> +       u32 max;
>> +       int ret;
>> +
>> +       parent = clks[core->parent & 0xffff];
>> +       if (IS_ERR(parent))
>> +               return ERR_CAST(parent);
>> +
>> +       parent_name = __clk_get_name(parent);
>> +
>> +       div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
>> +       if (!div_hw_data)
>> +               return ERR_PTR(-ENOMEM);
>> +
>> +       init.name = core->name;
>> +       init.flags = core->flag;
>> +       init.ops = &rzg3s_div_clk_ops;
>> +       init.parent_names = &parent_name;
>> +       init.num_parents = 1;
>> +
>> +       /* Get the maximum divider to retrieve div width. */
>> +       for (clkt = core->dtable; clkt->div; clkt++) {
>> +               if (max < clkt->div)
> 
> "max" is used uninitialized

Yes, you're right.

Thank you for your review,
Claudiu Beznea

> 
>> +                       max = clkt->div;
>> +       }
>> +
>> +       div_hw_data->hw_data.priv = priv;
>> +       div_hw_data->hw_data.conf = core->conf;
>> +       div_hw_data->hw_data.sconf = core->sconf;
>> +       div_hw_data->dtable = core->dtable;
>> +       div_hw_data->invalid_rate = core->invalid_rate;
>> +       div_hw_data->width = fls(max) - 1;
> 
> Isn't that
>> +
>> +       clk_hw = &div_hw_data->hw_data.hw;
>> +       clk_hw->init = &init;
>> +
>> +       ret = devm_clk_hw_register(priv->dev, clk_hw);
>> +       if (ret)
>> +               return ERR_PTR(ret);
>> +
>> +       ret = rzg2l_register_notifier(clk_hw, core, priv);
>> +       if (ret) {
>> +               dev_err(priv->dev, "Failed to register notifier for %s\n",
>> +                       core->name);
>> +               return ERR_PTR(ret);
>> +       }
>> +
>> +       return clk_hw->clk;
>> +}
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 

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Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[claudiu beznea]

On 04.10.2023 16:17, Geert Uytterhoeven wrote:
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> RZ/G3S supports different drive strength values for different power sources
>> and pin groups (A, B, C). On each group there could be up to 4 drive
>> strength values per power source. Available power sources are 1v8, 2v5,
>> 3v3. Drive strength values are fine tuned than what was previously
>> available on the driver thus the necessity of having micro-amp support.
>> As drive strength and power source values are linked together the
>> hardware setup for these was moved at the end of
>> rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
>> values.
>>
>> The drive strength values are expected to be initialized though SoC
>> specific hardware configuration data structure.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - s/strenght/strength, s/togheter/together in commit description
>> - got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
>>   value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
>> - removed spinlock in rzg2l_[sg]et_power_source()
>> - introduced caps_to_pwr_reg() and simplified the code in
>>   rzg2l_[sg]et_power_source()
>> - changed return type of rzg2l_iolh_ua_to_val() to int and return
>>   -EINVAL on failure cases
>> - s/rzg2l_ds_supported/rzg2l_ds_is_supported
>> - inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
>>   strength and power source to hardware registers and thus simplified the
>>   code
>> - used devm_kcalloc() instead of devm_kzalloc()
>> - adderessed the rest of the review comments
> 
> Thanks, will queue in renesas-pinctrl-for-v6.7, with Paul's comment
> addresses.

Thank you Geert and Paul!

> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 

Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[claudiu beznea]

On 04.10.2023 16:17, Geert Uytterhoeven wrote:
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>>
>> RZ/G3S supports different drive strength values for different power sources
>> and pin groups (A, B, C). On each group there could be up to 4 drive
>> strength values per power source. Available power sources are 1v8, 2v5,
>> 3v3. Drive strength values are fine tuned than what was previously
>> available on the driver thus the necessity of having micro-amp support.
>> As drive strength and power source values are linked together the
>> hardware setup for these was moved at the end of
>> rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
>> values.
>>
>> The drive strength values are expected to be initialized though SoC
>> specific hardware configuration data structure.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>> ---
>>
>> Changes in v2:
>> - s/strenght/strength, s/togheter/together in commit description
>> - got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
>>   value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
>> - removed spinlock in rzg2l_[sg]et_power_source()
>> - introduced caps_to_pwr_reg() and simplified the code in
>>   rzg2l_[sg]et_power_source()
>> - changed return type of rzg2l_iolh_ua_to_val() to int and return
>>   -EINVAL on failure cases
>> - s/rzg2l_ds_supported/rzg2l_ds_is_supported
>> - inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
>>   strength and power source to hardware registers and thus simplified the
>>   code
>> - used devm_kcalloc() instead of devm_kzalloc()
>> - adderessed the rest of the review comments
> 
> Thanks, will queue in renesas-pinctrl-for-v6.7, with Paul's comment
> addresses.

Thank you Geert and Paul!

> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 

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Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Geert Uytterhoeven]

On Wed, Oct 4, 2023 at 3:17 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> > From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> >
> > RZ/G3S supports different drive strength values for different power sources
> > and pin groups (A, B, C). On each group there could be up to 4 drive
> > strength values per power source. Available power sources are 1v8, 2v5,
> > 3v3. Drive strength values are fine tuned than what was previously
> > available on the driver thus the necessity of having micro-amp support.
> > As drive strength and power source values are linked together the
> > hardware setup for these was moved at the end of
> > rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
> > values.
> >
> > The drive strength values are expected to be initialized though SoC
> > specific hardware configuration data structure.
> >
> > Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> > ---
> >
> > Changes in v2:
> > - s/strenght/strength, s/togheter/together in commit description
> > - got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
> >   value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
> > - removed spinlock in rzg2l_[sg]et_power_source()
> > - introduced caps_to_pwr_reg() and simplified the code in
> >   rzg2l_[sg]et_power_source()
> > - changed return type of rzg2l_iolh_ua_to_val() to int and return
> >   -EINVAL on failure cases
> > - s/rzg2l_ds_supported/rzg2l_ds_is_supported
> > - inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
> >   strength and power source to hardware registers and thus simplified the
> >   code
> > - used devm_kcalloc() instead of devm_kzalloc()
> > - adderessed the rest of the review comments

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

> Thanks, will queue in renesas-pinctrl-for-v6.7, with Paul's comment
> addresses.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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Re: [PATCH v2 18/28] pinctrl: renesas: rzg2l: add support for different ds values on different groups

[Geert Uytterhoeven]

On Wed, Oct 4, 2023 at 3:17 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> > From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> >
> > RZ/G3S supports different drive strength values for different power sources
> > and pin groups (A, B, C). On each group there could be up to 4 drive
> > strength values per power source. Available power sources are 1v8, 2v5,
> > 3v3. Drive strength values are fine tuned than what was previously
> > available on the driver thus the necessity of having micro-amp support.
> > As drive strength and power source values are linked together the
> > hardware setup for these was moved at the end of
> > rzg2l_pinctrl_pinconf_set() to ensure proper validation of the new
> > values.
> >
> > The drive strength values are expected to be initialized though SoC
> > specific hardware configuration data structure.
> >
> > Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> > ---
> >
> > Changes in v2:
> > - s/strenght/strength, s/togheter/together in commit description
> > - got rid of RZG2L_INVALID_IOLH_VAL macro and consider zero as invalid
> >   value for entries in struct rzg2l_hwcfg::iolh_group[abc]_ua[] arrays
> > - removed spinlock in rzg2l_[sg]et_power_source()
> > - introduced caps_to_pwr_reg() and simplified the code in
> >   rzg2l_[sg]et_power_source()
> > - changed return type of rzg2l_iolh_ua_to_val() to int and return
> >   -EINVAL on failure cases
> > - s/rzg2l_ds_supported/rzg2l_ds_is_supported
> > - inverted the logic in rzg2l_pinctrl_pinconf_set() when applying drive
> >   strength and power source to hardware registers and thus simplified the
> >   code
> > - used devm_kcalloc() instead of devm_kzalloc()
> > - adderessed the rest of the review comments

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

> Thanks, will queue in renesas-pinctrl-for-v6.7, with Paul's comment
> addresses.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[Geert Uytterhoeven]

Hi Claudiu,

On Wed, Oct 4, 2023 at 2:30 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> > From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> >
> > Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
> > by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
> > The divider has some limitation for SDHI and OCTA clocks:
> > - SD div cannot be 1 if parent rate is 800MHz
> > - OCTA div cannot be 1 if parent rate is 400MHz
> > For these clocks a notifier could be registered from platform specific
> > clock driver and proper actions are taken before clock rate is changed,
> > if needed.
> >
> > Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> > ---
> >
> > Changes in v2:
> > - removed DIV_NOTIF macro

> > --- a/drivers/clk/renesas/rzg2l-cpg.c
> > +++ b/drivers/clk/renesas/rzg2l-cpg.c

> > +static struct clk * __init
> > +rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
> > +                          void __iomem *base, struct rzg2l_cpg_priv *priv)
> > +{
> > +       struct div_hw_data *div_hw_data;
> > +       struct clk_init_data init = {};
> > +       const struct clk_div_table *clkt;
> > +       struct clk_hw *clk_hw;
> > +       const struct clk *parent;
> > +       const char *parent_name;
> > +       u32 max;
> > +       int ret;
> > +
> > +       parent = clks[core->parent & 0xffff];
> > +       if (IS_ERR(parent))
> > +               return ERR_CAST(parent);
> > +
> > +       parent_name = __clk_get_name(parent);
> > +
> > +       div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
> > +       if (!div_hw_data)
> > +               return ERR_PTR(-ENOMEM);
> > +
> > +       init.name = core->name;
> > +       init.flags = core->flag;
> > +       init.ops = &rzg3s_div_clk_ops;
> > +       init.parent_names = &parent_name;
> > +       init.num_parents = 1;
> > +
> > +       /* Get the maximum divider to retrieve div width. */
> > +       for (clkt = core->dtable; clkt->div; clkt++) {
> > +               if (max < clkt->div)
>
> "max" is used uninitialized
>
> > +                       max = clkt->div;
> > +       }
> > +
> > +       div_hw_data->hw_data.priv = priv;
> > +       div_hw_data->hw_data.conf = core->conf;
> > +       div_hw_data->hw_data.sconf = core->sconf;
> > +       div_hw_data->dtable = core->dtable;
> > +       div_hw_data->invalid_rate = core->invalid_rate;
> > +       div_hw_data->width = fls(max) - 1;
>
> Isn't that

My apologies for not finishing my sentence; I wanted to write "Isn't
that identical to __fls(max)?".  But as the latter generates slightly
worse code, it's not worth making that change.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

Re: [PATCH v2 11/28] clk: renesas: rzg2l: add a divider clock for RZ/G3S

[Geert Uytterhoeven]

Hi Claudiu,

On Wed, Oct 4, 2023 at 2:30 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> On Fri, Sep 29, 2023 at 7:39 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> > From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> >
> > Add a divider clock driver for RZ/G3S. This will be used in RZ/G3S
> > by SDHI, SPI, OCTA, I, I2, I3, P0, P1, P2, P3 core clocks.
> > The divider has some limitation for SDHI and OCTA clocks:
> > - SD div cannot be 1 if parent rate is 800MHz
> > - OCTA div cannot be 1 if parent rate is 400MHz
> > For these clocks a notifier could be registered from platform specific
> > clock driver and proper actions are taken before clock rate is changed,
> > if needed.
> >
> > Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> > ---
> >
> > Changes in v2:
> > - removed DIV_NOTIF macro

> > --- a/drivers/clk/renesas/rzg2l-cpg.c
> > +++ b/drivers/clk/renesas/rzg2l-cpg.c

> > +static struct clk * __init
> > +rzg3s_cpg_div_clk_register(const struct cpg_core_clk *core, struct clk **clks,
> > +                          void __iomem *base, struct rzg2l_cpg_priv *priv)
> > +{
> > +       struct div_hw_data *div_hw_data;
> > +       struct clk_init_data init = {};
> > +       const struct clk_div_table *clkt;
> > +       struct clk_hw *clk_hw;
> > +       const struct clk *parent;
> > +       const char *parent_name;
> > +       u32 max;
> > +       int ret;
> > +
> > +       parent = clks[core->parent & 0xffff];
> > +       if (IS_ERR(parent))
> > +               return ERR_CAST(parent);
> > +
> > +       parent_name = __clk_get_name(parent);
> > +
> > +       div_hw_data = devm_kzalloc(priv->dev, sizeof(*div_hw_data), GFP_KERNEL);
> > +       if (!div_hw_data)
> > +               return ERR_PTR(-ENOMEM);
> > +
> > +       init.name = core->name;
> > +       init.flags = core->flag;
> > +       init.ops = &rzg3s_div_clk_ops;
> > +       init.parent_names = &parent_name;
> > +       init.num_parents = 1;
> > +
> > +       /* Get the maximum divider to retrieve div width. */
> > +       for (clkt = core->dtable; clkt->div; clkt++) {
> > +               if (max < clkt->div)
>
> "max" is used uninitialized
>
> > +                       max = clkt->div;
> > +       }
> > +
> > +       div_hw_data->hw_data.priv = priv;
> > +       div_hw_data->hw_data.conf = core->conf;
> > +       div_hw_data->hw_data.sconf = core->sconf;
> > +       div_hw_data->dtable = core->dtable;
> > +       div_hw_data->invalid_rate = core->invalid_rate;
> > +       div_hw_data->width = fls(max) - 1;
>
> Isn't that

My apologies for not finishing my sentence; I wanted to write "Isn't
that identical to __fls(max)?".  But as the latter generates slightly
worse code, it's not worth making that change.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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