[PATCH v7 0/3] clk: stm32h7: Add stm32h743 clock driver

[PATCH v7 0/3] clk: stm32h7: Add stm32h743 clock driver

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

v6:
  - rename clk_gate_is_enabled() in nxp lpc32xx driver.
  - add EXPORT_SYMBOL_GPL(clk_gate_is_enabled)

v5:
  - return bool instead int for enable_power_domain_write_protection()
  - add comment to explain use of CLK_OF_DECLARE_DRIVER()
  - add comment to explain why we can't use read_poll_timeout()
  - expose clk_gate_ops::is_enabled
  - use of __clk_mux_determine_rate & clk_gate_is_enabled to avoid wrapper
	function.

v4:
  - rename lock into stm32rcc_lock
  - don't use clk_readl() 
  - remove useless parentheses with GENMASK
  - fix parents of timer_x clocks
  - suppress pll configuration from DT
  - fix kbuild warning

v3:
  - fix compatible string "stm32h7-pll" into "st,stm32h7-pll"
  - fix bad parent name for mco2 clock
  - set CLK_SET_RATE_PARENT for ltdc clock
  - set CLK_IGNORE_UNUSED for pll1
  - disable power domain write protection on disable ops if needed


v2:
  - rename compatible string "stm32,pll" into "stm32h7-pll"
  - suppress "st,pllrge" property
  - suppress "st, frac-status" property
  - change management of "st,frac"  property
	0 : enable 0 pll integer mode 
	other values : enable pll in fractional mode (value is
	the fractional factor)

Gabriel Fernandez (3):
  clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()
  clk: gate: expose clk_gate_ops::is_enabled
  clk: stm32h7: Add stm32h743 clock driver

 .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
 drivers/clk/Makefile                               |    1 +
 drivers/clk/clk-gate.c                             |    3 +-
 drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
 drivers/clk/nxp/clk-lpc32xx.c                      |   12 +-
 include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
 include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
 include/linux/clk-provider.h                       |    1 +
 8 files changed, 1802 insertions(+), 7 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
 create mode 100644 drivers/clk/clk-stm32h7.c
 create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
 create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

-- 
1.9.1

[PATCH v7 0/3] clk: stm32h7: Add stm32h743 clock driver

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

v6:
  - rename clk_gate_is_enabled() in nxp lpc32xx driver.
  - add EXPORT_SYMBOL_GPL(clk_gate_is_enabled)

v5:
  - return bool instead int for enable_power_domain_write_protection()
  - add comment to explain use of CLK_OF_DECLARE_DRIVER()
  - add comment to explain why we can't use read_poll_timeout()
  - expose clk_gate_ops::is_enabled
  - use of __clk_mux_determine_rate & clk_gate_is_enabled to avoid wrapper
	function.

v4:
  - rename lock into stm32rcc_lock
  - don't use clk_readl() 
  - remove useless parentheses with GENMASK
  - fix parents of timer_x clocks
  - suppress pll configuration from DT
  - fix kbuild warning

v3:
  - fix compatible string "stm32h7-pll" into "st,stm32h7-pll"
  - fix bad parent name for mco2 clock
  - set CLK_SET_RATE_PARENT for ltdc clock
  - set CLK_IGNORE_UNUSED for pll1
  - disable power domain write protection on disable ops if needed


v2:
  - rename compatible string "stm32,pll" into "stm32h7-pll"
  - suppress "st,pllrge" property
  - suppress "st, frac-status" property
  - change management of "st,frac"  property
	0 : enable 0 pll integer mode 
	other values : enable pll in fractional mode (value is
	the fractional factor)

Gabriel Fernandez (3):
  clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()
  clk: gate: expose clk_gate_ops::is_enabled
  clk: stm32h7: Add stm32h743 clock driver

 .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
 drivers/clk/Makefile                               |    1 +
 drivers/clk/clk-gate.c                             |    3 +-
 drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
 drivers/clk/nxp/clk-lpc32xx.c                      |   12 +-
 include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
 include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
 include/linux/clk-provider.h                       |    1 +
 8 files changed, 1802 insertions(+), 7 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
 create mode 100644 drivers/clk/clk-stm32h7.c
 create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
 create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

-- 
1.9.1

[PATCH v7 0/3] clk: stm32h7: Add stm32h743 clock driver

[gabriel.fernandez at st.com]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

v6:
  - rename clk_gate_is_enabled() in nxp lpc32xx driver.
  - add EXPORT_SYMBOL_GPL(clk_gate_is_enabled)

v5:
  - return bool instead int for enable_power_domain_write_protection()
  - add comment to explain use of CLK_OF_DECLARE_DRIVER()
  - add comment to explain why we can't use read_poll_timeout()
  - expose clk_gate_ops::is_enabled
  - use of __clk_mux_determine_rate & clk_gate_is_enabled to avoid wrapper
	function.

v4:
  - rename lock into stm32rcc_lock
  - don't use clk_readl() 
  - remove useless parentheses with GENMASK
  - fix parents of timer_x clocks
  - suppress pll configuration from DT
  - fix kbuild warning

v3:
  - fix compatible string "stm32h7-pll" into "st,stm32h7-pll"
  - fix bad parent name for mco2 clock
  - set CLK_SET_RATE_PARENT for ltdc clock
  - set CLK_IGNORE_UNUSED for pll1
  - disable power domain write protection on disable ops if needed


v2:
  - rename compatible string "stm32,pll" into "stm32h7-pll"
  - suppress "st,pllrge" property
  - suppress "st, frac-status" property
  - change management of "st,frac"  property
	0 : enable 0 pll integer mode 
	other values : enable pll in fractional mode (value is
	the fractional factor)

Gabriel Fernandez (3):
  clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()
  clk: gate: expose clk_gate_ops::is_enabled
  clk: stm32h7: Add stm32h743 clock driver

 .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
 drivers/clk/Makefile                               |    1 +
 drivers/clk/clk-gate.c                             |    3 +-
 drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
 drivers/clk/nxp/clk-lpc32xx.c                      |   12 +-
 include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
 include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
 include/linux/clk-provider.h                       |    1 +
 8 files changed, 1802 insertions(+), 7 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
 create mode 100644 drivers/clk/clk-stm32h7.c
 create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
 create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

-- 
1.9.1

[PATCH v7 1/3] clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

We need to export clk_gate_is_enabled() from clk framework, then
to avoid compilation issue we have to rename clk_gate_is_enabled()
in NXP LPC32xx clock driver.
We changed all gate op with 'lpc32xx_' prefix:
lpc32xx_clk_gate_enable(),
lpc32xx_clk_gate_disable(),
lpc32xx_clk_gate_is_enabled().

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
---
 drivers/clk/nxp/clk-lpc32xx.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c
index 5b98ff9..7b359af 100644
--- a/drivers/clk/nxp/clk-lpc32xx.c
+++ b/drivers/clk/nxp/clk-lpc32xx.c
@@ -885,7 +885,7 @@ static unsigned long clk_usb_i2c_recalc_rate(struct clk_hw *hw,
 	.recalc_rate = clk_usb_i2c_recalc_rate,
 };
 
-static int clk_gate_enable(struct clk_hw *hw)
+static int lpc32xx_clk_gate_enable(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 mask = BIT(clk->bit_idx);
@@ -894,7 +894,7 @@ static int clk_gate_enable(struct clk_hw *hw)
 	return regmap_update_bits(clk_regmap, clk->reg, mask, val);
 }
 
-static void clk_gate_disable(struct clk_hw *hw)
+static void lpc32xx_clk_gate_disable(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 mask = BIT(clk->bit_idx);
@@ -903,7 +903,7 @@ static void clk_gate_disable(struct clk_hw *hw)
 	regmap_update_bits(clk_regmap, clk->reg, mask, val);
 }
 
-static int clk_gate_is_enabled(struct clk_hw *hw)
+static int lpc32xx_clk_gate_is_enabled(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 val;
@@ -916,9 +916,9 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
 }
 
 static const struct clk_ops lpc32xx_clk_gate_ops = {
-	.enable = clk_gate_enable,
-	.disable = clk_gate_disable,
-	.is_enabled = clk_gate_is_enabled,
+	.enable = lpc32xx_clk_gate_enable,
+	.disable = lpc32xx_clk_gate_disable,
+	.is_enabled = lpc32xx_clk_gate_is_enabled,
 };
 
 #define div_mask(width)	((1 << (width)) - 1)
-- 
1.9.1

[PATCH v7 1/3] clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

We need to export clk_gate_is_enabled() from clk framework, then
to avoid compilation issue we have to rename clk_gate_is_enabled()
in NXP LPC32xx clock driver.
We changed all gate op with 'lpc32xx_' prefix:
lpc32xx_clk_gate_enable(),
lpc32xx_clk_gate_disable(),
lpc32xx_clk_gate_is_enabled().

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
---
 drivers/clk/nxp/clk-lpc32xx.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c
index 5b98ff9..7b359af 100644
--- a/drivers/clk/nxp/clk-lpc32xx.c
+++ b/drivers/clk/nxp/clk-lpc32xx.c
@@ -885,7 +885,7 @@ static unsigned long clk_usb_i2c_recalc_rate(struct clk_hw *hw,
 	.recalc_rate = clk_usb_i2c_recalc_rate,
 };
 
-static int clk_gate_enable(struct clk_hw *hw)
+static int lpc32xx_clk_gate_enable(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 mask = BIT(clk->bit_idx);
@@ -894,7 +894,7 @@ static int clk_gate_enable(struct clk_hw *hw)
 	return regmap_update_bits(clk_regmap, clk->reg, mask, val);
 }
 
-static void clk_gate_disable(struct clk_hw *hw)
+static void lpc32xx_clk_gate_disable(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 mask = BIT(clk->bit_idx);
@@ -903,7 +903,7 @@ static void clk_gate_disable(struct clk_hw *hw)
 	regmap_update_bits(clk_regmap, clk->reg, mask, val);
 }
 
-static int clk_gate_is_enabled(struct clk_hw *hw)
+static int lpc32xx_clk_gate_is_enabled(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 val;
@@ -916,9 +916,9 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
 }
 
 static const struct clk_ops lpc32xx_clk_gate_ops = {
-	.enable = clk_gate_enable,
-	.disable = clk_gate_disable,
-	.is_enabled = clk_gate_is_enabled,
+	.enable = lpc32xx_clk_gate_enable,
+	.disable = lpc32xx_clk_gate_disable,
+	.is_enabled = lpc32xx_clk_gate_is_enabled,
 };
 
 #define div_mask(width)	((1 << (width)) - 1)
-- 
1.9.1

[PATCH v7 1/3] clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()

[gabriel.fernandez at st.com]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

We need to export clk_gate_is_enabled() from clk framework, then
to avoid compilation issue we have to rename clk_gate_is_enabled()
in NXP LPC32xx clock driver.
We changed all gate op with 'lpc32xx_' prefix:
lpc32xx_clk_gate_enable(),
lpc32xx_clk_gate_disable(),
lpc32xx_clk_gate_is_enabled().

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
---
 drivers/clk/nxp/clk-lpc32xx.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/clk/nxp/clk-lpc32xx.c b/drivers/clk/nxp/clk-lpc32xx.c
index 5b98ff9..7b359af 100644
--- a/drivers/clk/nxp/clk-lpc32xx.c
+++ b/drivers/clk/nxp/clk-lpc32xx.c
@@ -885,7 +885,7 @@ static unsigned long clk_usb_i2c_recalc_rate(struct clk_hw *hw,
 	.recalc_rate = clk_usb_i2c_recalc_rate,
 };
 
-static int clk_gate_enable(struct clk_hw *hw)
+static int lpc32xx_clk_gate_enable(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 mask = BIT(clk->bit_idx);
@@ -894,7 +894,7 @@ static int clk_gate_enable(struct clk_hw *hw)
 	return regmap_update_bits(clk_regmap, clk->reg, mask, val);
 }
 
-static void clk_gate_disable(struct clk_hw *hw)
+static void lpc32xx_clk_gate_disable(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 mask = BIT(clk->bit_idx);
@@ -903,7 +903,7 @@ static void clk_gate_disable(struct clk_hw *hw)
 	regmap_update_bits(clk_regmap, clk->reg, mask, val);
 }
 
-static int clk_gate_is_enabled(struct clk_hw *hw)
+static int lpc32xx_clk_gate_is_enabled(struct clk_hw *hw)
 {
 	struct lpc32xx_clk_gate *clk = to_lpc32xx_gate(hw);
 	u32 val;
@@ -916,9 +916,9 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
 }
 
 static const struct clk_ops lpc32xx_clk_gate_ops = {
-	.enable = clk_gate_enable,
-	.disable = clk_gate_disable,
-	.is_enabled = clk_gate_is_enabled,
+	.enable = lpc32xx_clk_gate_enable,
+	.disable = lpc32xx_clk_gate_disable,
+	.is_enabled = lpc32xx_clk_gate_is_enabled,
 };
 
 #define div_mask(width)	((1 << (width)) - 1)
-- 
1.9.1

[PATCH v7 2/3] clk: gate: expose clk_gate_ops::is_enabled

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch exposes clk_gate_ops::is_enabled as functions
that can be directly called and assigned in places like this so
we don't need wrapper functions that do nothing besides forward
the call.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Sugested by Stephen Boyd <sboyd@codeaurora.org>
---
 drivers/clk/clk-gate.c       | 3 ++-
 include/linux/clk-provider.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 4e0c054a..dd82485 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -86,7 +86,7 @@ static void clk_gate_disable(struct clk_hw *hw)
 	clk_gate_endisable(hw, 0);
 }
 
-static int clk_gate_is_enabled(struct clk_hw *hw)
+int clk_gate_is_enabled(struct clk_hw *hw)
 {
 	u32 reg;
 	struct clk_gate *gate = to_clk_gate(hw);
@@ -101,6 +101,7 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
 
 	return reg ? 1 : 0;
 }
+EXPORT_SYMBOL_GPL(clk_gate_is_enabled);
 
 const struct clk_ops clk_gate_ops = {
 	.enable = clk_gate_enable,
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index c59c625..e9587ab 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -343,6 +343,7 @@ struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name,
 		u8 clk_gate_flags, spinlock_t *lock);
 void clk_unregister_gate(struct clk *clk);
 void clk_hw_unregister_gate(struct clk_hw *hw);
+int clk_gate_is_enabled(struct clk_hw *hw);
 
 struct clk_div_table {
 	unsigned int	val;
-- 
1.9.1

[PATCH v7 2/3] clk: gate: expose clk_gate_ops::is_enabled

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch exposes clk_gate_ops::is_enabled as functions
that can be directly called and assigned in places like this so
we don't need wrapper functions that do nothing besides forward
the call.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Sugested by Stephen Boyd <sboyd@codeaurora.org>
---
 drivers/clk/clk-gate.c       | 3 ++-
 include/linux/clk-provider.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 4e0c054a..dd82485 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -86,7 +86,7 @@ static void clk_gate_disable(struct clk_hw *hw)
 	clk_gate_endisable(hw, 0);
 }
 
-static int clk_gate_is_enabled(struct clk_hw *hw)
+int clk_gate_is_enabled(struct clk_hw *hw)
 {
 	u32 reg;
 	struct clk_gate *gate = to_clk_gate(hw);
@@ -101,6 +101,7 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
 
 	return reg ? 1 : 0;
 }
+EXPORT_SYMBOL_GPL(clk_gate_is_enabled);
 
 const struct clk_ops clk_gate_ops = {
 	.enable = clk_gate_enable,
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index c59c625..e9587ab 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -343,6 +343,7 @@ struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name,
 		u8 clk_gate_flags, spinlock_t *lock);
 void clk_unregister_gate(struct clk *clk);
 void clk_hw_unregister_gate(struct clk_hw *hw);
+int clk_gate_is_enabled(struct clk_hw *hw);
 
 struct clk_div_table {
 	unsigned int	val;
-- 
1.9.1

[PATCH v7 2/3] clk: gate: expose clk_gate_ops::is_enabled

[gabriel.fernandez at st.com]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch exposes clk_gate_ops::is_enabled as functions
that can be directly called and assigned in places like this so
we don't need wrapper functions that do nothing besides forward
the call.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Sugested by Stephen Boyd <sboyd@codeaurora.org>
---
 drivers/clk/clk-gate.c       | 3 ++-
 include/linux/clk-provider.h | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 4e0c054a..dd82485 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -86,7 +86,7 @@ static void clk_gate_disable(struct clk_hw *hw)
 	clk_gate_endisable(hw, 0);
 }
 
-static int clk_gate_is_enabled(struct clk_hw *hw)
+int clk_gate_is_enabled(struct clk_hw *hw)
 {
 	u32 reg;
 	struct clk_gate *gate = to_clk_gate(hw);
@@ -101,6 +101,7 @@ static int clk_gate_is_enabled(struct clk_hw *hw)
 
 	return reg ? 1 : 0;
 }
+EXPORT_SYMBOL_GPL(clk_gate_is_enabled);
 
 const struct clk_ops clk_gate_ops = {
 	.enable = clk_gate_enable,
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index c59c625..e9587ab 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -343,6 +343,7 @@ struct clk_hw *clk_hw_register_gate(struct device *dev, const char *name,
 		u8 clk_gate_flags, spinlock_t *lock);
 void clk_unregister_gate(struct clk *clk);
 void clk_hw_unregister_gate(struct clk_hw *hw);
+int clk_gate_is_enabled(struct clk_hw *hw);
 
 struct clk_div_table {
 	unsigned int	val;
-- 
1.9.1

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch enables clocks for STM32H743 boards.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

for MFD changes:
Acked-by: Lee Jones <lee.jones@linaro.org>

for DT-Bindings
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
 drivers/clk/Makefile                               |    1 +
 drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
 include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
 include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
 5 files changed, 1793 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
 create mode 100644 drivers/clk/clk-stm32h7.c
 create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
 create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
new file mode 100644
index 0000000..442c50c
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
@@ -0,0 +1,82 @@
+STMicroelectronics STM32H7 Reset and Clock Controller
+=====================================================
+
+The RCC IP is both a reset and a clock controller.
+
+Please refer to clock-bindings.txt for common clock controller binding usage.
+Please also refer to reset.txt for common reset controller binding usage.
+
+Required properties:
+- compatible: Should be:
+  "st,stm32h743-rcc"
+
+- reg: should be register base and length as documented in the
+  datasheet
+
+- #reset-cells: 1, see below
+
+- #clock-cells : from common clock binding; shall be set to 1
+
+- clocks: External oscillator clock phandle
+  - high speed external clock signal (HSE)
+  - low speed external clock signal (LSE)
+  - external I2S clock (I2S_CKIN)
+
+Optional properties:
+- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
+  write protection (RTC clock).
+
+Example:
+
+	rcc: rcc@58024400 {
+		#reset-cells = <1>;
+		#clock-cells = <2>
+		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
+		reg = <0x58024400 0x400>;
+		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
+
+		st,syscfg = <&pwrcfg>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+The peripheral clock consumer should specify the desired clock by
+having the clock ID in its "clocks" phandle cell.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/stm32h7-clks.h header and can be used in device
+tree sources.
+
+Example:
+
+		timer5: timer@40000c00 {
+			compatible = "st,stm32-timer";
+			reg = <0x40000c00 0x400>;
+			interrupts = <50>;
+			clocks = <&rcc TIM5_CK>;
+
+		};
+
+Specifying softreset control of devices
+=======================================
+
+Device nodes should specify the reset channel required in their "resets"
+property, containing a phandle to the reset device node and an index specifying
+which channel to use.
+The index is the bit number within the RCC registers bank, starting from RCC
+base address.
+It is calculated as: index = register_offset / 4 * 32 + bit_offset.
+Where bit_offset is the bit offset within the register.
+
+For example, for CRC reset:
+  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
+
+All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
+header and can be used in device tree sources.
+
+example:
+
+	timer2 {
+		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
+	};
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index cd376b3..e50c18c 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_COMMON_CLK_SI5351)		+= clk-si5351.o
 obj-$(CONFIG_COMMON_CLK_SI514)		+= clk-si514.o
 obj-$(CONFIG_COMMON_CLK_SI570)		+= clk-si570.o
 obj-$(CONFIG_ARCH_STM32)		+= clk-stm32f4.o
+obj-$(CONFIG_ARCH_STM32)		+= clk-stm32h7.o
 obj-$(CONFIG_ARCH_TANGO)		+= clk-tango4.o
 obj-$(CONFIG_CLK_TWL6040)		+= clk-twl6040.o
 obj-$(CONFIG_ARCH_U300)			+= clk-u300.o
diff --git a/drivers/clk/clk-stm32h7.c b/drivers/clk/clk-stm32h7.c
new file mode 100644
index 0000000..993b26c
--- /dev/null
+++ b/drivers/clk/clk-stm32h7.c
@@ -0,0 +1,1409 @@
+/*
+ * Copyright (C) Gabriel Fernandez 2017
+ * Author: Gabriel Fernandez <gabriel.fernandez@st.com>
+ *
+ * License terms: GPL V2.0.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/stm32h7-clks.h>
+
+/* Reset Clock Control Registers */
+#define RCC_CR		0x00
+#define RCC_CFGR	0x10
+#define RCC_D1CFGR	0x18
+#define RCC_D2CFGR	0x1C
+#define RCC_D3CFGR	0x20
+#define RCC_PLLCKSELR	0x28
+#define RCC_PLLCFGR	0x2C
+#define RCC_PLL1DIVR	0x30
+#define RCC_PLL1FRACR	0x34
+#define RCC_PLL2DIVR	0x38
+#define RCC_PLL2FRACR	0x3C
+#define RCC_PLL3DIVR	0x40
+#define RCC_PLL3FRACR	0x44
+#define RCC_D1CCIPR	0x4C
+#define RCC_D2CCIP1R	0x50
+#define RCC_D2CCIP2R	0x54
+#define RCC_D3CCIPR	0x58
+#define RCC_BDCR	0x70
+#define RCC_CSR		0x74
+#define RCC_AHB3ENR	0xD4
+#define RCC_AHB1ENR	0xD8
+#define RCC_AHB2ENR	0xDC
+#define RCC_AHB4ENR	0xE0
+#define RCC_APB3ENR	0xE4
+#define RCC_APB1LENR	0xE8
+#define RCC_APB1HENR	0xEC
+#define RCC_APB2ENR	0xF0
+#define RCC_APB4ENR	0xF4
+
+static DEFINE_SPINLOCK(stm32rcc_lock);
+
+static void __iomem *base;
+static struct clk_hw **hws;
+
+/* System clock parent */
+static const char * const sys_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "pll1_p" };
+
+static const char * const tracein_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "pll1_r" };
+
+static const char * const per_src[] = {
+	"hsi_ker", "csi_ker", "hse_ck", "disabled" };
+
+static const char * const pll_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "no clock" };
+
+static const char * const sdmmc_src[] = { "pll1_q", "pll2_r" };
+
+static const char * const dsi_src[] = { "ck_dsi_phy", "pll2_q" };
+
+static const char * const qspi_src[] = {
+	"hclk", "pll1_q", "pll2_r", "per_ck" };
+
+static const char * const fmc_src[] = {
+	"hclk", "pll1_q", "pll2_r", "per_ck" };
+
+/* Kernel clock parent */
+static const char * const swp_src[] = {	"pclk1", "hsi_ker" };
+
+static const char * const fdcan_src[] = { "hse_ck", "pll1_q", "pll2_q" };
+
+static const char * const dfsdm1_src[] = { "pclk2", "sys_ck" };
+
+static const char * const spdifrx_src[] = {
+	"pll1_q", "pll2_r", "pll3_r", "hsi_ker" };
+
+static const char *spi_src1[5] = {
+	"pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const spi_src2[] = {
+	"pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const spi_src3[] = {
+	"pclk4", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const lptim_src1[] = {
+	"pclk1", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const lptim_src2[] = {
+	"pclk4", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const cec_src[] = {"lse_ck", "lsi_ck", "csi_ker_div122" };
+
+static const char * const usbotg_src[] = {"pll1_q", "pll3_q", "rc48_ck" };
+
+/* i2c 1,2,3 src */
+static const char * const i2c_src1[] = {
+	"pclk1", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const i2c_src2[] = {
+	"pclk4", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const rng_src[] = {
+	"rc48_ck", "pll1_q", "lse_ck", "lsi_ck" };
+
+/* usart 1,6 src */
+static const char * const usart_src1[] = {
+	"pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+/* usart 2,3,4,5,7,8 src */
+static const char * const usart_src2[] = {
+	"pclk1", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+static const char *sai_src[5] = {
+	"pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const adc_src[] = { "pll2_p", "pll3_r", "per_ck" };
+
+/* lptim 2,3,4,5 src */
+static const char * const lpuart1_src[] = {
+	"pclk3", "pll2_q", "pll3_q", "csi_ker", "lse_ck" };
+
+static const char * const hrtim_src[] = { "tim2_ker", "d1cpre" };
+
+/* RTC clock parent */
+static const char * const rtc_src[] = { "off", "lse_ck", "lsi_ck", "hse_1M" };
+
+/* Micro-controller output clock parent */
+static const char * const mco_src1[] = {
+	"hsi_ck", "lse_ck", "hse_ck", "pll1_q",	"rc48_ck" };
+
+static const char * const mco_src2[] = {
+	"sys_ck", "pll2_p", "hse_ck", "pll1_p", "csi_ck", "lsi_ck" };
+
+/* LCD clock */
+static const char * const ltdc_src[] = {"pll3_r"};
+
+/* Gate clock with ready bit and backup domain management */
+struct stm32_ready_gate {
+	struct	clk_gate gate;
+	u8	bit_rdy;
+};
+
+#define to_ready_gate_clk(_rgate) container_of(_rgate, struct stm32_ready_gate,\
+		gate)
+
+#define RGATE_TIMEOUT 10000
+
+static int ready_gate_clk_enable(struct clk_hw *hw)
+{
+	struct clk_gate *gate = to_clk_gate(hw);
+	struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+	int bit_status;
+	unsigned int timeout = RGATE_TIMEOUT;
+
+	if (clk_gate_ops.is_enabled(hw))
+		return 0;
+
+	clk_gate_ops.enable(hw);
+
+	/* We can't use readl_poll_timeout() because we can blocked if
+	 * someone enables this clock before clocksource changes.
+	 * Only jiffies counter is available. Jiffies are incremented by
+	 * interruptions and enable op does not allow to be interrupted.
+	 */
+	do {
+		bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+		if (bit_status)
+			udelay(100);
+
+	} while (bit_status && --timeout);
+
+	return bit_status;
+}
+
+static void ready_gate_clk_disable(struct clk_hw *hw)
+{
+	struct clk_gate *gate = to_clk_gate(hw);
+	struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+	int bit_status;
+	unsigned int timeout = RGATE_TIMEOUT;
+
+	if (!clk_gate_ops.is_enabled(hw))
+		return;
+
+	clk_gate_ops.disable(hw);
+
+	do {
+		bit_status = !!(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+		if (bit_status)
+			udelay(100);
+
+	} while (bit_status && --timeout);
+}
+
+static const struct clk_ops ready_gate_clk_ops = {
+	.enable		= ready_gate_clk_enable,
+	.disable	= ready_gate_clk_disable,
+	.is_enabled	= clk_gate_is_enabled,
+};
+
+static struct clk_hw *clk_register_ready_gate(struct device *dev,
+		const char *name, const char *parent_name,
+		void __iomem *reg, u8 bit_idx, u8 bit_rdy,
+		unsigned long flags, spinlock_t *lock)
+{
+	struct stm32_ready_gate *rgate;
+	struct clk_init_data init = { NULL };
+	struct clk_hw *hw;
+	int ret;
+
+	rgate = kzalloc(sizeof(*rgate), GFP_KERNEL);
+	if (!rgate)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &ready_gate_clk_ops;
+	init.flags = flags;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	rgate->bit_rdy = bit_rdy;
+	rgate->gate.lock = lock;
+	rgate->gate.reg = reg;
+	rgate->gate.bit_idx = bit_idx;
+	rgate->gate.hw.init = &init;
+
+	hw = &rgate->gate.hw;
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(rgate);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+struct gate_cfg {
+	u32 offset;
+	u8  bit_idx;
+};
+
+struct muxdiv_cfg {
+	u32 offset;
+	u8 shift;
+	u8 width;
+};
+
+struct composite_clk_cfg {
+	struct gate_cfg *gate;
+	struct muxdiv_cfg *mux;
+	struct muxdiv_cfg *div;
+	const char *name;
+	const char * const *parent_name;
+	int num_parents;
+	u32 flags;
+};
+
+struct composite_clk_gcfg_t {
+	u8 flags;
+	const struct clk_ops *ops;
+};
+
+/*
+ * General config definition of a composite clock (only clock diviser for rate)
+ */
+struct composite_clk_gcfg {
+	struct composite_clk_gcfg_t *mux;
+	struct composite_clk_gcfg_t *div;
+	struct composite_clk_gcfg_t *gate;
+};
+
+#define M_CFG_MUX(_mux_ops, _mux_flags)\
+	.mux = &(struct composite_clk_gcfg_t) { _mux_flags, _mux_ops}
+
+#define M_CFG_DIV(_rate_ops, _rate_flags)\
+	.div = &(struct composite_clk_gcfg_t) {_rate_flags, _rate_ops}
+
+#define M_CFG_GATE(_gate_ops, _gate_flags)\
+	.gate = &(struct composite_clk_gcfg_t) { _gate_flags, _gate_ops}
+
+static struct clk_mux *_get_cmux(void __iomem *reg, u8 shift, u8 width,
+		u32 flags, spinlock_t *lock)
+{
+	struct clk_mux *mux;
+
+	mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+	if (!mux)
+		return ERR_PTR(-ENOMEM);
+
+	mux->reg	= reg;
+	mux->shift	= shift;
+	mux->mask	= (1 << width) - 1;
+	mux->flags	= flags;
+	mux->lock	= lock;
+
+	return mux;
+}
+
+static struct clk_divider *_get_cdiv(void __iomem *reg, u8 shift, u8 width,
+		u32 flags, spinlock_t *lock)
+{
+	struct clk_divider *div;
+
+	div = kzalloc(sizeof(*div), GFP_KERNEL);
+
+	if (!div)
+		return ERR_PTR(-ENOMEM);
+
+	div->reg   = reg;
+	div->shift = shift;
+	div->width = width;
+	div->flags = flags;
+	div->lock  = lock;
+
+	return div;
+}
+
+static struct clk_gate *_get_cgate(void __iomem *reg, u8 bit_idx, u32 flags,
+		spinlock_t *lock)
+{
+	struct clk_gate *gate;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	gate->reg	= reg;
+	gate->bit_idx	= bit_idx;
+	gate->flags	= flags;
+	gate->lock	= lock;
+
+	return gate;
+}
+
+struct composite_cfg {
+	struct clk_hw *mux_hw;
+	struct clk_hw *div_hw;
+	struct clk_hw *gate_hw;
+
+	const struct clk_ops *mux_ops;
+	const struct clk_ops *div_ops;
+	const struct clk_ops *gate_ops;
+};
+
+static void get_cfg_composite_div(const struct composite_clk_gcfg *gcfg,
+		const struct composite_clk_cfg *cfg,
+		struct composite_cfg *composite, spinlock_t *lock)
+{
+	struct clk_mux     *mux = NULL;
+	struct clk_divider *div = NULL;
+	struct clk_gate    *gate = NULL;
+	const struct clk_ops *mux_ops, *div_ops, *gate_ops;
+	struct clk_hw *mux_hw;
+	struct clk_hw *div_hw;
+	struct clk_hw *gate_hw;
+
+	mux_ops = div_ops = gate_ops = NULL;
+	mux_hw = div_hw = gate_hw = NULL;
+
+	if (gcfg->mux && gcfg->mux) {
+		mux = _get_cmux(base + cfg->mux->offset,
+				cfg->mux->shift,
+				cfg->mux->width,
+				gcfg->mux->flags, lock);
+
+		if (!IS_ERR(mux)) {
+			mux_hw = &mux->hw;
+			mux_ops = gcfg->mux->ops ?
+				  gcfg->mux->ops : &clk_mux_ops;
+		}
+	}
+
+	if (gcfg->div && cfg->div) {
+		div = _get_cdiv(base + cfg->div->offset,
+				cfg->div->shift,
+				cfg->div->width,
+				gcfg->div->flags, lock);
+
+		if (!IS_ERR(div)) {
+			div_hw = &div->hw;
+			div_ops = gcfg->div->ops ?
+				  gcfg->div->ops : &clk_divider_ops;
+		}
+	}
+
+	if (gcfg->gate && gcfg->gate) {
+		gate = _get_cgate(base + cfg->gate->offset,
+				cfg->gate->bit_idx,
+				gcfg->gate->flags, lock);
+
+		if (!IS_ERR(gate)) {
+			gate_hw = &gate->hw;
+			gate_ops = gcfg->gate->ops ?
+				   gcfg->gate->ops : &clk_gate_ops;
+		}
+	}
+
+	composite->mux_hw = mux_hw;
+	composite->mux_ops = mux_ops;
+
+	composite->div_hw = div_hw;
+	composite->div_ops = div_ops;
+
+	composite->gate_hw = gate_hw;
+	composite->gate_ops = gate_ops;
+}
+
+/* Kernel Timer */
+struct timer_ker {
+	u8 dppre_shift;
+	struct clk_hw hw;
+	spinlock_t *lock;
+};
+
+#define to_timer_ker(_hw) container_of(_hw, struct timer_ker, hw)
+
+static unsigned long timer_ker_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct timer_ker *clk_elem = to_timer_ker(hw);
+	u32 timpre;
+	u32 dppre_shift = clk_elem->dppre_shift;
+	u32 prescaler;
+	u32 mul;
+
+	timpre = (readl(base + RCC_CFGR) >> 15) & 0x01;
+
+	prescaler = (readl(base + RCC_D2CFGR) >> dppre_shift) & 0x03;
+
+	mul = 2;
+
+	if (prescaler < 4)
+		mul = 1;
+
+	else if (timpre && prescaler > 4)
+		mul = 4;
+
+	return parent_rate * mul;
+}
+
+static const struct clk_ops timer_ker_ops = {
+	.recalc_rate = timer_ker_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_timer_ker(struct device *dev,
+		const char *name, const char *parent_name,
+		unsigned long flags,
+		u8 dppre_shift,
+		spinlock_t *lock)
+{
+	struct timer_ker *element;
+	struct clk_init_data init;
+	struct clk_hw *hw;
+	int err;
+
+	element = kzalloc(sizeof(*element), GFP_KERNEL);
+	if (!element)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &timer_ker_ops;
+	init.flags = flags;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	element->hw.init = &init;
+	element->lock = lock;
+	element->dppre_shift = dppre_shift;
+
+	hw = &element->hw;
+	err = clk_hw_register(dev, hw);
+
+	if (err) {
+		kfree(element);
+		return ERR_PTR(err);
+	}
+
+	return hw;
+}
+
+static const struct clk_div_table d1cpre_div_table[] = {
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+	{ 4, 1 }, { 5, 1 }, { 6, 1 }, { 7, 1},
+	{ 8, 2 }, { 9, 4 }, { 10, 8 }, { 11, 16 },
+	{ 12, 64 }, { 13, 128 }, { 14, 256 },
+	{ 15, 512 },
+	{ 0 },
+};
+
+static const struct clk_div_table ppre_div_table[] = {
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+	{ 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 },
+	{ 0 },
+};
+
+static void register_core_and_bus_clocks(void)
+{
+	/* CORE AND BUS */
+	hws[SYS_D1CPRE] = clk_hw_register_divider_table(NULL, "d1cpre",
+			"sys_ck", CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 8, 4, 0,
+			d1cpre_div_table, &stm32rcc_lock);
+
+	hws[HCLK] = clk_hw_register_divider_table(NULL, "hclk", "d1cpre",
+			CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 0, 4, 0,
+			d1cpre_div_table, &stm32rcc_lock);
+
+	/* D1 DOMAIN */
+	/* * CPU Systick */
+	hws[CPU_SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick",
+			"d1cpre", 0, 1, 8);
+
+	/* * APB3 peripheral */
+	hws[PCLK3] = clk_hw_register_divider_table(NULL, "pclk3", "hclk", 0,
+			base + RCC_D1CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+
+	/* D2 DOMAIN */
+	/* * APB1 peripheral */
+	hws[PCLK1] = clk_hw_register_divider_table(NULL, "pclk1", "hclk", 0,
+			base + RCC_D2CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+
+	/* Timers prescaler clocks */
+	clk_register_stm32_timer_ker(NULL, "tim1_ker", "pclk1", 0,
+			4, &stm32rcc_lock);
+
+	/* * APB2 peripheral */
+	hws[PCLK2] = clk_hw_register_divider_table(NULL, "pclk2", "hclk", 0,
+			base + RCC_D2CFGR, 8, 3, 0, ppre_div_table,
+			&stm32rcc_lock);
+
+	clk_register_stm32_timer_ker(NULL, "tim2_ker", "pclk2", 0, 8,
+			&stm32rcc_lock);
+
+	/* D3 DOMAIN */
+	/* * APB4 peripheral */
+	hws[PCLK4] = clk_hw_register_divider_table(NULL, "pclk4", "hclk", 0,
+			base + RCC_D3CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+}
+
+/* MUX clock configuration */
+struct stm32_mux_clk {
+	const char *name;
+	const char * const *parents;
+	u8 num_parents;
+	u32 offset;
+	u8 shift;
+	u8 width;
+	u32 flags;
+};
+
+#define M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, _flags)\
+{\
+	.name		= _name,\
+	.parents	= _parents,\
+	.num_parents	= ARRAY_SIZE(_parents),\
+	.offset		= _mux_offset,\
+	.shift		= _mux_shift,\
+	.width		= _mux_width,\
+	.flags		= _flags,\
+}
+
+#define M_MCLOC(_name, _parents, _mux_offset, _mux_shift, _mux_width)\
+	M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, 0)\
+
+static const struct stm32_mux_clk stm32_mclk[] __initconst = {
+	M_MCLOC("per_ck",	per_src,	RCC_D1CCIPR,	28, 3),
+	M_MCLOC("pllsrc",	pll_src,	RCC_PLLCKSELR,	 0, 3),
+	M_MCLOC("sys_ck",	sys_src,	RCC_CFGR,	 0, 3),
+	M_MCLOC("tracein_ck",	tracein_src,	RCC_CFGR,	 0, 3),
+};
+
+/* Oscillary clock configuration */
+struct stm32_osc_clk {
+	const char *name;
+	const char *parent;
+	u32 gate_offset;
+	u8 bit_idx;
+	u8 bit_rdy;
+	u32 flags;
+};
+
+#define OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, _flags)\
+{\
+	.name		= _name,\
+	.parent		= _parent,\
+	.gate_offset	= _gate_offset,\
+	.bit_idx	= _bit_idx,\
+	.bit_rdy	= _bit_rdy,\
+	.flags		= _flags,\
+}
+
+#define OSC_CLK(_name, _parent, _gate_offset, _bit_idx, _bit_rdy)\
+	OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, 0)
+
+static const struct stm32_osc_clk stm32_oclk[] __initconst = {
+	OSC_CLKF("hsi_ck",  "hsidiv",   RCC_CR,   0,  2, CLK_IGNORE_UNUSED),
+	OSC_CLKF("hsi_ker", "hsidiv",   RCC_CR,   1,  2, CLK_IGNORE_UNUSED),
+	OSC_CLKF("csi_ck",  "clk-csi",  RCC_CR,   7,  8, CLK_IGNORE_UNUSED),
+	OSC_CLKF("csi_ker", "clk-csi",  RCC_CR,   9,  8, CLK_IGNORE_UNUSED),
+	OSC_CLKF("rc48_ck", "clk-rc48", RCC_CR,  12, 13, CLK_IGNORE_UNUSED),
+	OSC_CLKF("lsi_ck",  "clk-lsi",  RCC_CSR,  0,  1, CLK_IGNORE_UNUSED),
+};
+
+/* PLL configuration */
+struct st32h7_pll_cfg {
+	u8 bit_idx;
+	u32 offset_divr;
+	u8 bit_frac_en;
+	u32 offset_frac;
+	u8 divm;
+};
+
+struct stm32_pll_data {
+	const char *name;
+	const char *parent_name;
+	unsigned long flags;
+	const struct st32h7_pll_cfg *cfg;
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll1 = {
+	.bit_idx = 24,
+	.offset_divr = RCC_PLL1DIVR,
+	.bit_frac_en = 0,
+	.offset_frac = RCC_PLL1FRACR,
+	.divm = 4,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll2 = {
+	.bit_idx = 26,
+	.offset_divr = RCC_PLL2DIVR,
+	.bit_frac_en = 4,
+	.offset_frac = RCC_PLL2FRACR,
+	.divm = 12,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll3 = {
+	.bit_idx = 28,
+	.offset_divr = RCC_PLL3DIVR,
+	.bit_frac_en = 8,
+	.offset_frac = RCC_PLL3FRACR,
+	.divm = 20,
+};
+
+static const struct stm32_pll_data stm32_pll[] = {
+	{ "vco1", "pllsrc", CLK_IGNORE_UNUSED, &stm32h7_pll1 },
+	{ "vco2", "pllsrc", 0, &stm32h7_pll2 },
+	{ "vco3", "pllsrc", 0, &stm32h7_pll3 },
+};
+
+struct stm32_fractional_divider {
+	void __iomem	*mreg;
+	u8		mshift;
+	u8		mwidth;
+	u32		mmask;
+
+	void __iomem	*nreg;
+	u8		nshift;
+	u8		nwidth;
+
+	void __iomem	*freg_status;
+	u8		freg_bit;
+	void __iomem	*freg_value;
+	u8		fshift;
+	u8		fwidth;
+
+	u8		flags;
+	struct clk_hw	hw;
+	spinlock_t	*lock;
+};
+
+struct stm32_pll_obj {
+	spinlock_t *lock;
+	struct stm32_fractional_divider div;
+	struct stm32_ready_gate rgate;
+	struct clk_hw hw;
+};
+
+#define to_pll(_hw) container_of(_hw, struct stm32_pll_obj, hw)
+
+static int pll_is_enabled(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	return ready_gate_clk_ops.is_enabled(_hw);
+}
+
+static int pll_enable(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	return ready_gate_clk_ops.enable(_hw);
+}
+
+static void pll_disable(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	ready_gate_clk_ops.disable(_hw);
+}
+
+static int pll_frac_is_enabled(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+
+	return (readl(fd->freg_status) >> fd->freg_bit) & 0x01;
+}
+
+static unsigned long pll_read_frac(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+
+	return (readl(fd->freg_value) >> fd->fshift) &
+		GENMASK(fd->fwidth - 1, 0);
+}
+
+static unsigned long pll_fd_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+	unsigned long m, n;
+	u32 val, mask;
+	u64 rate, rate1 = 0;
+
+	val = readl(fd->mreg);
+	mask = GENMASK(fd->mwidth - 1, 0) << fd->mshift;
+	m = (val & mask) >> fd->mshift;
+
+	val = readl(fd->nreg);
+	mask = GENMASK(fd->nwidth - 1, 0) << fd->nshift;
+	n = ((val & mask) >> fd->nshift) + 1;
+
+	if (!n || !m)
+		return parent_rate;
+
+	rate = (u64)parent_rate * n;
+	do_div(rate, m);
+
+	if (pll_frac_is_enabled(hw)) {
+		val = pll_read_frac(hw);
+		rate1 = (u64)parent_rate * (u64)val;
+		do_div(rate1, (m * 8191));
+	}
+
+	return rate + rate1;
+}
+
+static const struct clk_ops pll_ops = {
+	.enable		= pll_enable,
+	.disable	= pll_disable,
+	.is_enabled	= pll_is_enabled,
+	.recalc_rate	= pll_fd_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_pll(struct device *dev,
+		const char *name,
+		const char *parent,
+		unsigned long flags,
+		const struct st32h7_pll_cfg *cfg,
+		spinlock_t *lock)
+{
+	struct stm32_pll_obj *pll;
+	struct clk_init_data init = { NULL };
+	struct clk_hw *hw;
+	int ret;
+	struct stm32_fractional_divider *div = NULL;
+	struct stm32_ready_gate *rgate;
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &pll_ops;
+	init.flags = flags;
+	init.parent_names = &parent;
+	init.num_parents = 1;
+	pll->hw.init = &init;
+
+	hw = &pll->hw;
+	rgate = &pll->rgate;
+
+	rgate->bit_rdy = cfg->bit_idx + 1;
+	rgate->gate.lock = lock;
+	rgate->gate.reg = base + RCC_CR;
+	rgate->gate.bit_idx = cfg->bit_idx;
+
+	div = &pll->div;
+	div->flags = 0;
+	div->mreg = base + RCC_PLLCKSELR;
+	div->mshift = cfg->divm;
+	div->mwidth = 6;
+	div->nreg = base +  cfg->offset_divr;
+	div->nshift = 0;
+	div->nwidth = 9;
+
+	div->freg_status = base + RCC_PLLCFGR;
+	div->freg_bit = cfg->bit_frac_en;
+	div->freg_value = base +  cfg->offset_frac;
+	div->fshift = 3;
+	div->fwidth = 13;
+
+	div->lock = lock;
+
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(pll);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+/* ODF CLOCKS */
+static unsigned long odf_divider_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	return clk_divider_ops.recalc_rate(hw, parent_rate);
+}
+
+static long odf_divider_round_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long *prate)
+{
+	return clk_divider_ops.round_rate(hw, rate, prate);
+}
+
+static int odf_divider_set_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long parent_rate)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+	int ret;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
+
+	if (pll_status)
+		pll_enable(hwp);
+
+	return ret;
+}
+
+static const struct clk_ops odf_divider_ops = {
+	.recalc_rate	= odf_divider_recalc_rate,
+	.round_rate	= odf_divider_round_rate,
+	.set_rate	= odf_divider_set_rate,
+};
+
+static int odf_gate_enable(struct clk_hw *hw)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+	int ret;
+
+	if (clk_gate_ops.is_enabled(hw))
+		return 0;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	ret = clk_gate_ops.enable(hw);
+
+	if (pll_status)
+		pll_enable(hwp);
+
+	return ret;
+}
+
+static void odf_gate_disable(struct clk_hw *hw)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+
+	if (!clk_gate_ops.is_enabled(hw))
+		return;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	clk_gate_ops.disable(hw);
+
+	if (pll_status)
+		pll_enable(hwp);
+}
+
+static const struct clk_ops odf_gate_ops = {
+	.enable		= odf_gate_enable,
+	.disable	= odf_gate_disable,
+	.is_enabled	= clk_gate_is_enabled,
+};
+
+static struct composite_clk_gcfg odf_clk_gcfg = {
+	M_CFG_DIV(&odf_divider_ops, 0),
+	M_CFG_GATE(&odf_gate_ops, 0),
+};
+
+#define M_ODF_F(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width, _flags)\
+{\
+	.mux = NULL,\
+	.div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx },\
+	.name = _name,\
+	.parent_name = &(const char *) {_parent},\
+	.num_parents = 1,\
+	.flags = _flags,\
+}
+
+#define M_ODF(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width)\
+M_ODF_F(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width, 0)\
+
+static const struct composite_clk_cfg stm32_odf[3][3] = {
+	{
+		M_ODF_F("pll1_p", "vco1", RCC_PLLCFGR, 16, RCC_PLL1DIVR,  9, 7,
+				CLK_IGNORE_UNUSED),
+		M_ODF_F("pll1_q", "vco1", RCC_PLLCFGR, 17, RCC_PLL1DIVR, 16, 7,
+				CLK_IGNORE_UNUSED),
+		M_ODF_F("pll1_r", "vco1", RCC_PLLCFGR, 18, RCC_PLL1DIVR, 24, 7,
+				CLK_IGNORE_UNUSED),
+	},
+
+	{
+		M_ODF("pll2_p", "vco2", RCC_PLLCFGR, 19, RCC_PLL2DIVR,  9, 7),
+		M_ODF("pll2_q", "vco2", RCC_PLLCFGR, 20, RCC_PLL2DIVR, 16, 7),
+		M_ODF("pll2_r", "vco2", RCC_PLLCFGR, 21, RCC_PLL2DIVR, 24, 7),
+	},
+	{
+		M_ODF("pll3_p", "vco3", RCC_PLLCFGR, 22, RCC_PLL3DIVR,  9, 7),
+		M_ODF("pll3_q", "vco3", RCC_PLLCFGR, 23, RCC_PLL3DIVR, 16, 7),
+		M_ODF("pll3_r", "vco3", RCC_PLLCFGR, 24, RCC_PLL3DIVR, 24, 7),
+	}
+};
+
+/* PERIF CLOCKS */
+struct pclk_t {
+	u32 gate_offset;
+	u8 bit_idx;
+	const char *name;
+	const char *parent;
+	u32 flags;
+};
+
+#define PER_CLKF(_gate_offset, _bit_idx, _name, _parent, _flags)\
+{\
+	.gate_offset	= _gate_offset,\
+	.bit_idx	= _bit_idx,\
+	.name		= _name,\
+	.parent		= _parent,\
+	.flags		= _flags,\
+}
+
+#define PER_CLK(_gate_offset, _bit_idx, _name, _parent)\
+	PER_CLKF(_gate_offset, _bit_idx, _name, _parent, 0)
+
+static const struct pclk_t pclk[] = {
+	PER_CLK(RCC_AHB3ENR, 31, "d1sram1", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 30, "itcm", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 29, "dtcm2", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 28, "dtcm1", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 8, "flitf", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 5, "jpgdec", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 4, "dma2d", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 0, "mdma", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 28, "usb2ulpi", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 26, "usb1ulpi", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 17, "eth1rx", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 16, "eth1tx", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 15, "eth1mac", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 14, "art", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 1, "dma2", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 0, "dma1", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 31, "d2sram3", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 30, "d2sram2", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 29, "d2sram1", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 5, "hash", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 4, "crypt", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 0, "camitf", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 28, "bkpram", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 25, "hsem", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 21, "bdma", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 19, "crc", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 10, "gpiok", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 9, "gpioj", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 8, "gpioi", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 7, "gpioh", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 6, "gpiog", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 5, "gpiof", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 4, "gpioe", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 3, "gpiod", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 2, "gpioc", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 1, "gpiob", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 0, "gpioa", "hclk"),
+	PER_CLK(RCC_APB3ENR, 6, "wwdg1", "pclk3"),
+	PER_CLK(RCC_APB1LENR, 29, "dac12", "pclk1"),
+	PER_CLK(RCC_APB1LENR, 11, "wwdg2", "pclk1"),
+	PER_CLK(RCC_APB1LENR, 8, "tim14", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 7, "tim13", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 6, "tim12", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 5, "tim7", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 4, "tim6", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 3, "tim5", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 2, "tim4", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 1, "tim3", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 0, "tim2", "tim1_ker"),
+	PER_CLK(RCC_APB1HENR, 5, "mdios", "pclk1"),
+	PER_CLK(RCC_APB1HENR, 4, "opamp", "pclk1"),
+	PER_CLK(RCC_APB1HENR, 1, "crs", "pclk1"),
+	PER_CLK(RCC_APB2ENR, 18, "tim17", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 17, "tim16", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 16, "tim15", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 1, "tim8", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 0, "tim1", "tim2_ker"),
+	PER_CLK(RCC_APB4ENR, 26, "tmpsens", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 16, "rtcapb", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 15, "vref", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 14, "comp12", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 1, "syscfg", "pclk4"),
+};
+
+/* KERNEL CLOCKS */
+#define KER_CLKF(_gate_offset, _bit_idx,\
+		_mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name,\
+		_flags) \
+{ \
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+	.mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+	.name = _name, \
+	.parent_name = _parent_name, \
+	.num_parents = ARRAY_SIZE(_parent_name),\
+	.flags = _flags,\
+}
+
+#define KER_CLK(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name) \
+KER_CLKF(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name, 0)\
+
+#define KER_CLKF_NOMUX(_gate_offset, _bit_idx,\
+		_name, _parent_name,\
+		_flags) \
+{ \
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+	.mux = NULL,\
+	.name = _name, \
+	.parent_name = _parent_name, \
+	.num_parents = 1,\
+	.flags = _flags,\
+}
+
+static const struct composite_clk_cfg kclk[] = {
+	KER_CLK(RCC_AHB3ENR,  16, RCC_D1CCIPR,	16, 1, "sdmmc1", sdmmc_src),
+	KER_CLKF(RCC_AHB3ENR, 14, RCC_D1CCIPR,	 4, 2, "quadspi", qspi_src,
+			CLK_IGNORE_UNUSED),
+	KER_CLKF(RCC_AHB3ENR, 12, RCC_D1CCIPR,	 0, 2, "fmc", fmc_src,
+			CLK_IGNORE_UNUSED),
+	KER_CLK(RCC_AHB1ENR,  27, RCC_D2CCIP2R,	20, 2, "usb2otg", usbotg_src),
+	KER_CLK(RCC_AHB1ENR,  25, RCC_D2CCIP2R, 20, 2, "usb1otg", usbotg_src),
+	KER_CLK(RCC_AHB1ENR,   5, RCC_D3CCIPR,	16, 2, "adc12", adc_src),
+	KER_CLK(RCC_AHB2ENR,   9, RCC_D1CCIPR,	16, 1, "sdmmc2", sdmmc_src),
+	KER_CLK(RCC_AHB2ENR,   6, RCC_D2CCIP2R,	 8, 2, "rng", rng_src),
+	KER_CLK(RCC_AHB4ENR,  24, RCC_D3CCIPR,  16, 2, "adc3", adc_src),
+	KER_CLKF(RCC_APB3ENR,   4, RCC_D1CCIPR,	 8, 1, "dsi", dsi_src,
+			CLK_SET_RATE_PARENT),
+	KER_CLKF_NOMUX(RCC_APB3ENR, 3, "ltdc", ltdc_src, CLK_SET_RATE_PARENT),
+	KER_CLK(RCC_APB1LENR, 31, RCC_D2CCIP2R,  0, 3, "usart8", usart_src2),
+	KER_CLK(RCC_APB1LENR, 30, RCC_D2CCIP2R,  0, 3, "usart7", usart_src2),
+	KER_CLK(RCC_APB1LENR, 27, RCC_D2CCIP2R, 22, 2, "hdmicec", cec_src),
+	KER_CLK(RCC_APB1LENR, 23, RCC_D2CCIP2R, 12, 2, "i2c3", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 22, RCC_D2CCIP2R, 12, 2, "i2c2", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 21, RCC_D2CCIP2R, 12, 2, "i2c1", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 20, RCC_D2CCIP2R,	 0, 3, "uart5", usart_src2),
+	KER_CLK(RCC_APB1LENR, 19, RCC_D2CCIP2R,  0, 3, "uart4", usart_src2),
+	KER_CLK(RCC_APB1LENR, 18, RCC_D2CCIP2R,  0, 3, "usart3", usart_src2),
+	KER_CLK(RCC_APB1LENR, 17, RCC_D2CCIP2R,  0, 3, "usart2", usart_src2),
+	KER_CLK(RCC_APB1LENR, 16, RCC_D2CCIP1R, 20, 2, "spdifrx", spdifrx_src),
+	KER_CLK(RCC_APB1LENR, 15, RCC_D2CCIP1R, 16, 3, "spi3", spi_src1),
+	KER_CLK(RCC_APB1LENR, 14, RCC_D2CCIP1R, 16, 3, "spi2", spi_src1),
+	KER_CLK(RCC_APB1LENR,  9, RCC_D2CCIP2R, 28, 3, "lptim1", lptim_src1),
+	KER_CLK(RCC_APB1HENR,  8, RCC_D2CCIP1R, 28, 2, "fdcan", fdcan_src),
+	KER_CLK(RCC_APB1HENR,  2, RCC_D2CCIP1R, 31, 1, "swp", swp_src),
+	KER_CLK(RCC_APB2ENR,  29, RCC_CFGR,	14, 1, "hrtim", hrtim_src),
+	KER_CLK(RCC_APB2ENR,  28, RCC_D2CCIP1R, 24, 1, "dfsdm1", dfsdm1_src),
+	KER_CLKF(RCC_APB2ENR,  24, RCC_D2CCIP1R,  6, 3, "sai3", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLKF(RCC_APB2ENR,  23, RCC_D2CCIP1R,  6, 3, "sai2", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLKF(RCC_APB2ENR,  22, RCC_D2CCIP1R,  0, 3, "sai1", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLK(RCC_APB2ENR,  20, RCC_D2CCIP1R, 16, 3, "spi5", spi_src2),
+	KER_CLK(RCC_APB2ENR,  13, RCC_D2CCIP1R, 16, 3, "spi4", spi_src2),
+	KER_CLK(RCC_APB2ENR,  12, RCC_D2CCIP1R, 16, 3, "spi1", spi_src1),
+	KER_CLK(RCC_APB2ENR,   5, RCC_D2CCIP2R,  3, 3, "usart6", usart_src1),
+	KER_CLK(RCC_APB2ENR,   4, RCC_D2CCIP2R,  3, 3, "usart1", usart_src1),
+	KER_CLK(RCC_APB4ENR,  21, RCC_D3CCIPR,	24, 3, "sai4b", sai_src),
+	KER_CLK(RCC_APB4ENR,  21, RCC_D3CCIPR,	21, 3, "sai4a", sai_src),
+	KER_CLK(RCC_APB4ENR,  12, RCC_D3CCIPR,	13, 3, "lptim5", lptim_src2),
+	KER_CLK(RCC_APB4ENR,  11, RCC_D3CCIPR,	13, 3, "lptim4", lptim_src2),
+	KER_CLK(RCC_APB4ENR,  10, RCC_D3CCIPR,	13, 3, "lptim3", lptim_src2),
+	KER_CLK(RCC_APB4ENR,   9, RCC_D3CCIPR,	10, 3, "lptim2", lptim_src2),
+	KER_CLK(RCC_APB4ENR,   7, RCC_D3CCIPR,	 8, 2, "i2c4", i2c_src2),
+	KER_CLK(RCC_APB4ENR,   5, RCC_D3CCIPR,	28, 3, "spi6", spi_src3),
+	KER_CLK(RCC_APB4ENR,   3, RCC_D3CCIPR,	 0, 3, "lpuart1", lpuart1_src),
+};
+
+static struct composite_clk_gcfg kernel_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_GATE(NULL, 0),
+};
+
+/* RTC clock */
+/*
+ * RTC & LSE registers are protected against parasitic write access.
+ * PWR_CR_DBP bit must be set to enable write access to RTC registers.
+ */
+/* STM32_PWR_CR */
+#define PWR_CR				0x00
+/* STM32_PWR_CR bit field */
+#define PWR_CR_DBP			BIT(8)
+
+static struct composite_clk_gcfg rtc_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_GATE(NULL, 0),
+};
+
+static const struct composite_clk_cfg rtc_clk =
+	KER_CLK(RCC_BDCR, 15, RCC_BDCR, 8, 2, "rtc_ck", rtc_src);
+
+/* Micro-controller output clock */
+static struct composite_clk_gcfg mco_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_DIV(NULL,	CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO),
+};
+
+#define M_MCO_F(_name, _parents, _mux_offset,  _mux_shift, _mux_width,\
+		_rate_offset, _rate_shift, _rate_width,\
+		_flags)\
+{\
+	.mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+	.div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+	.gate = NULL,\
+	.name = _name,\
+	.parent_name = _parents,\
+	.num_parents = ARRAY_SIZE(_parents),\
+	.flags = _flags,\
+}
+
+static const struct composite_clk_cfg mco_clk[] = {
+	M_MCO_F("mco1", mco_src1, RCC_CFGR, 22, 4, RCC_CFGR, 18, 4, 0),
+	M_MCO_F("mco2", mco_src2, RCC_CFGR, 29, 3, RCC_CFGR, 25, 4, 0),
+};
+
+static void __init stm32h7_rcc_init(struct device_node *np)
+{
+	struct clk_hw_onecell_data *clk_data;
+	struct composite_cfg c_cfg;
+	int n;
+	const char *hse_clk, *lse_clk, *i2s_clk;
+	struct regmap *pdrm;
+
+	clk_data = kzalloc(sizeof(*clk_data) +
+			sizeof(*clk_data->hws) * STM32H7_MAX_CLKS,
+			GFP_KERNEL);
+	if (!clk_data)
+		return;
+
+	clk_data->num = STM32H7_MAX_CLKS;
+
+	hws = clk_data->hws;
+
+	for (n = 0; n < STM32H7_MAX_CLKS; n++)
+		hws[n] = ERR_PTR(-ENOENT);
+
+	/* get RCC base @ from DT */
+	base = of_iomap(np, 0);
+	if (!base) {
+		pr_err("%s: unable to map resource", np->name);
+		goto err_free_clks;
+	}
+
+	pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+	if (IS_ERR(pdrm))
+		pr_warn("%s: Unable to get syscfg\n", __func__);
+	else
+		/* In any case disable backup domain write protection
+		 * and will never be enabled.
+		 * Needed by LSE & RTC clocks. */
+		regmap_update_bits(pdrm, PWR_CR, PWR_CR_DBP, PWR_CR_DBP);
+
+	/* Put parent names from DT */
+	hse_clk = of_clk_get_parent_name(np, 0);
+	lse_clk = of_clk_get_parent_name(np, 1);
+	i2s_clk = of_clk_get_parent_name(np, 2);
+
+	sai_src[3] = i2s_clk;
+	spi_src1[3] = i2s_clk;
+
+	/* Register Internal oscillators */
+	clk_hw_register_fixed_rate(NULL, "clk-hsi", NULL, 0, 64000000);
+	clk_hw_register_fixed_rate(NULL, "clk-csi", NULL, 0, 4000000);
+	clk_hw_register_fixed_rate(NULL, "clk-lsi", NULL, 0, 32000);
+	clk_hw_register_fixed_rate(NULL, "clk-rc48", NULL, 0, 48000);
+
+	/* This clock is coming from outside. Frequencies unknown */
+	hws[CK_DSI_PHY] = clk_hw_register_fixed_rate(NULL, "ck_dsi_phy", NULL,
+			0, 0);
+
+	hws[HSI_DIV] = clk_hw_register_divider(NULL, "hsidiv", "clk-hsi", 0,
+			base + RCC_CR, 3, 2, CLK_DIVIDER_POWER_OF_TWO,
+			&stm32rcc_lock);
+
+	hws[HSE_1M] = clk_hw_register_divider(NULL, "hse_1M", "hse_ck",	0,
+			base + RCC_CFGR, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO,
+			&stm32rcc_lock);
+
+	/* Mux system clocks */
+	for (n = 0; n < ARRAY_SIZE(stm32_mclk); n++)
+		hws[MCLK_BANK + n] = clk_hw_register_mux(NULL,
+				stm32_mclk[n].name,
+				stm32_mclk[n].parents,
+				stm32_mclk[n].num_parents,
+				stm32_mclk[n].flags,
+				stm32_mclk[n].offset + base,
+				stm32_mclk[n].shift,
+				stm32_mclk[n].width,
+				0,
+				&stm32rcc_lock);
+
+	register_core_and_bus_clocks();
+
+	/* Oscillary clocks */
+	for (n = 0; n < ARRAY_SIZE(stm32_oclk); n++)
+		hws[OSC_BANK + n] = clk_register_ready_gate(NULL,
+				stm32_oclk[n].name,
+				stm32_oclk[n].parent,
+				stm32_oclk[n].gate_offset + base,
+				stm32_oclk[n].bit_idx,
+				stm32_oclk[n].bit_rdy,
+				stm32_oclk[n].flags,
+				&stm32rcc_lock);
+
+	hws[HSE_CK] = clk_register_ready_gate(NULL,
+				"hse_ck",
+				hse_clk,
+				RCC_CR + base,
+				16, 17,
+				0,
+				&stm32rcc_lock);
+
+	hws[LSE_CK] = clk_register_ready_gate(NULL,
+				"lse_ck",
+				lse_clk,
+				RCC_BDCR + base,
+				0, 1,
+				0,
+				&stm32rcc_lock);
+
+	hws[CSI_KER_DIV122 + n] = clk_hw_register_fixed_factor(NULL,
+			"csi_ker_div122", "csi_ker", 0, 1, 122);
+
+	/* PLLs */
+	for (n = 0; n < ARRAY_SIZE(stm32_pll); n++) {
+		int odf;
+
+		/* Register the VCO */
+		clk_register_stm32_pll(NULL, stm32_pll[n].name,
+				stm32_pll[n].parent_name, stm32_pll[n].flags,
+				stm32_pll[n].cfg,
+				&stm32rcc_lock);
+
+		/* Register the 3 output dividers */
+		for (odf = 0; odf < 3; odf++) {
+			int idx = n * 3 + odf;
+
+			get_cfg_composite_div(&odf_clk_gcfg, &stm32_odf[n][odf],
+					&c_cfg,	&stm32rcc_lock);
+
+			hws[ODF_BANK + idx] = clk_hw_register_composite(NULL,
+					stm32_odf[n][odf].name,
+					stm32_odf[n][odf].parent_name,
+					stm32_odf[n][odf].num_parents,
+					c_cfg.mux_hw, c_cfg.mux_ops,
+					c_cfg.div_hw, c_cfg.div_ops,
+					c_cfg.gate_hw, c_cfg.gate_ops,
+					stm32_odf[n][odf].flags);
+		}
+	}
+
+	/* Peripheral clocks */
+	for (n = 0; n < ARRAY_SIZE(pclk); n++)
+		hws[PERIF_BANK + n] = clk_hw_register_gate(NULL, pclk[n].name,
+				pclk[n].parent,
+				pclk[n].flags, base + pclk[n].gate_offset,
+				pclk[n].bit_idx, pclk[n].flags, &stm32rcc_lock);
+
+	/* Kernel clocks */
+	for (n = 0; n < ARRAY_SIZE(kclk); n++) {
+		get_cfg_composite_div(&kernel_clk_cfg, &kclk[n], &c_cfg,
+				&stm32rcc_lock);
+
+		hws[KERN_BANK + n] = clk_hw_register_composite(NULL,
+				kclk[n].name,
+				kclk[n].parent_name,
+				kclk[n].num_parents,
+				c_cfg.mux_hw, c_cfg.mux_ops,
+				c_cfg.div_hw, c_cfg.div_ops,
+				c_cfg.gate_hw, c_cfg.gate_ops,
+				kclk[n].flags);
+	}
+
+	/* RTC clock (default state is off) */
+	clk_hw_register_fixed_rate(NULL, "off", NULL, 0, 0);
+
+	get_cfg_composite_div(&rtc_clk_cfg, &rtc_clk, &c_cfg, &stm32rcc_lock);
+
+	hws[RTC_CK] = clk_hw_register_composite(NULL,
+			rtc_clk.name,
+			rtc_clk.parent_name,
+			rtc_clk.num_parents,
+			c_cfg.mux_hw, c_cfg.mux_ops,
+			c_cfg.div_hw, c_cfg.div_ops,
+			c_cfg.gate_hw, c_cfg.gate_ops,
+			rtc_clk.flags);
+
+	/* Micro-controller clocks */
+	for (n = 0; n < ARRAY_SIZE(mco_clk); n++) {
+		get_cfg_composite_div(&mco_clk_cfg, &mco_clk[n], &c_cfg,
+				&stm32rcc_lock);
+
+		hws[MCO_BANK + n] = clk_hw_register_composite(NULL,
+				mco_clk[n].name,
+				mco_clk[n].parent_name,
+				mco_clk[n].num_parents,
+				c_cfg.mux_hw, c_cfg.mux_ops,
+				c_cfg.div_hw, c_cfg.div_ops,
+				c_cfg.gate_hw, c_cfg.gate_ops,
+				mco_clk[n].flags);
+	}
+
+	of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
+
+	return;
+
+err_free_clks:
+	kfree(clk_data);
+}
+
+/* The RCC node is a clock and reset controller, and these
+ * functionalities are supported by different drivers that
+ * matches the same compatible strings.
+ */
+CLK_OF_DECLARE_DRIVER(stm32h7_rcc, "st,stm32h743-rcc", stm32h7_rcc_init);
diff --git a/include/dt-bindings/clock/stm32h7-clks.h b/include/dt-bindings/clock/stm32h7-clks.h
new file mode 100644
index 0000000..6637272
--- /dev/null
+++ b/include/dt-bindings/clock/stm32h7-clks.h
@@ -0,0 +1,165 @@
+/* SYS, CORE AND BUS CLOCKS */
+#define SYS_D1CPRE 0
+#define HCLK 1
+#define PCLK1 2
+#define PCLK2 3
+#define PCLK3 4
+#define PCLK4 5
+#define HSI_DIV 6
+#define HSE_1M 7
+#define I2S_CKIN 8
+#define CK_DSI_PHY 9
+#define HSE_CK 10
+#define LSE_CK 11
+#define CSI_KER_DIV122 12
+#define RTC_CK 13
+#define CPU_SYSTICK 14
+
+/* OSCILLATOR BANK */
+#define OSC_BANK 18
+#define HSI_CK 18
+#define HSI_KER_CK 19
+#define CSI_CK 20
+#define CSI_KER_CK 21
+#define RC48_CK 22
+#define LSI_CK 23
+
+/* MCLOCK BANK */
+#define MCLK_BANK 28
+#define PER_CK 28
+#define PLLSRC 29
+#define SYS_CK 30
+#define TRACEIN_CK 31
+
+/* ODF BANK */
+#define ODF_BANK 32
+#define PLL1_P 32
+#define PLL1_Q 33
+#define PLL1_R 34
+#define PLL2_P 35
+#define PLL2_Q 36
+#define PLL2_R 37
+#define PLL3_P 38
+#define PLL3_Q 39
+#define PLL3_R 40
+
+/* MCO BANK */
+#define MCO_BANK 41
+#define MCO1 41
+#define MCO2 42
+
+/* PERIF BANK */
+#define PERIF_BANK 50
+#define D1SRAM1_CK 50
+#define ITCM_CK 51
+#define DTCM2_CK 52
+#define DTCM1_CK 53
+#define FLITF_CK 54
+#define JPGDEC_CK 55
+#define DMA2D_CK 56
+#define MDMA_CK 57
+#define USB2ULPI_CK 58
+#define USB1ULPI_CK 59
+#define ETH1RX_CK 60
+#define ETH1TX_CK 61
+#define ETH1MAC_CK 62
+#define ART_CK 63
+#define DMA2_CK 64
+#define DMA1_CK 65
+#define D2SRAM3_CK 66
+#define D2SRAM2_CK 67
+#define D2SRAM1_CK 68
+#define HASH_CK 69
+#define CRYPT_CK 70
+#define CAMITF_CK 71
+#define BKPRAM_CK 72
+#define HSEM_CK 73
+#define BDMA_CK 74
+#define CRC_CK 75
+#define GPIOK_CK 76
+#define GPIOJ_CK 77
+#define GPIOI_CK 78
+#define GPIOH_CK 79
+#define GPIOG_CK 80
+#define GPIOF_CK 81
+#define GPIOE_CK 82
+#define GPIOD_CK 83
+#define GPIOC_CK 84
+#define GPIOB_CK 85
+#define GPIOA_CK 86
+#define WWDG1_CK 87
+#define DAC12_CK 88
+#define WWDG2_CK 89
+#define TIM14_CK 90
+#define TIM13_CK 91
+#define TIM12_CK 92
+#define TIM7_CK 93
+#define TIM6_CK 94
+#define TIM5_CK 95
+#define TIM4_CK 96
+#define TIM3_CK 97
+#define TIM2_CK 98
+#define MDIOS_CK 99
+#define OPAMP_CK 100
+#define CRS_CK 101
+#define TIM17_CK 102
+#define TIM16_CK 103
+#define TIM15_CK 104
+#define TIM8_CK 105
+#define TIM1_CK 106
+#define TMPSENS_CK 107
+#define RTCAPB_CK 108
+#define VREF_CK 109
+#define COMP12_CK 110
+#define SYSCFG_CK 111
+
+/* KERNEL BANK */
+#define KERN_BANK 120
+#define SDMMC1_CK 120
+#define QUADSPI_CK 121
+#define FMC_CK 122
+#define USB2OTG_CK 123
+#define USB1OTG_CK 124
+#define ADC12_CK 125
+#define SDMMC2_CK 126
+#define RNG_CK 127
+#define ADC3_CK 128
+#define DSI_CK 129
+#define LTDC_CK 130
+#define USART8_CK 131
+#define USART7_CK 132
+#define HDMICEC_CK 133
+#define I2C3_CK 134
+#define I2C2_CK 135
+#define I2C1_CK 136
+#define UART5_CK 137
+#define UART4_CK 138
+#define USART3_CK 139
+#define USART2_CK 140
+#define SPDIFRX_CK 141
+#define SPI3_CK 142
+#define SPI2_CK 143
+#define LPTIM1_CK 144
+#define FDCAN_CK 145
+#define SWP_CK 146
+#define HRTIM_CK 147
+#define DFSDM1_CK 148
+#define SAI3_CK 149
+#define SAI2_CK 150
+#define SAI1_CK 151
+#define SPI5_CK 152
+#define SPI4_CK 153
+#define SPI1_CK 154
+#define USART6_CK 155
+#define USART1_CK 156
+#define SAI4B_CK 157
+#define SAI4A_CK 158
+#define LPTIM5_CK 159
+#define LPTIM4_CK 160
+#define LPTIM3_CK 161
+#define LPTIM2_CK 162
+#define I2C4_CK 163
+#define SPI6_CK 164
+#define LPUART1_CK 165
+
+#define STM32H7_MAX_CLKS 166
diff --git a/include/dt-bindings/mfd/stm32h7-rcc.h b/include/dt-bindings/mfd/stm32h7-rcc.h
new file mode 100644
index 0000000..461a8e0
--- /dev/null
+++ b/include/dt-bindings/mfd/stm32h7-rcc.h
@@ -0,0 +1,136 @@
+/*
+ * This header provides constants for the STM32H7 RCC IP
+ */
+
+#ifndef _DT_BINDINGS_MFD_STM32H7_RCC_H
+#define _DT_BINDINGS_MFD_STM32H7_RCC_H
+
+/* AHB3 */
+#define STM32H7_RCC_AHB3_MDMA		0
+#define STM32H7_RCC_AHB3_DMA2D		4
+#define STM32H7_RCC_AHB3_JPGDEC		5
+#define STM32H7_RCC_AHB3_FMC		12
+#define STM32H7_RCC_AHB3_QUADSPI	14
+#define STM32H7_RCC_AHB3_SDMMC1		16
+#define STM32H7_RCC_AHB3_CPU		31
+
+#define STM32H7_AHB3_RESET(bit) (STM32H7_RCC_AHB3_##bit + (0x7C * 8))
+
+/* AHB1 */
+#define STM32H7_RCC_AHB1_DMA1		0
+#define STM32H7_RCC_AHB1_DMA2		1
+#define STM32H7_RCC_AHB1_ADC12		5
+#define STM32H7_RCC_AHB1_ART		14
+#define STM32H7_RCC_AHB1_ETH1MAC	15
+#define STM32H7_RCC_AHB1_USB1OTG	25
+#define STM32H7_RCC_AHB1_USB2OTG	27
+
+#define STM32H7_AHB1_RESET(bit) (STM32H7_RCC_AHB1_##bit + (0x80 * 8))
+
+/* AHB2 */
+#define STM32H7_RCC_AHB2_CAMITF		0
+#define STM32H7_RCC_AHB2_CRYPT		4
+#define STM32H7_RCC_AHB2_HASH		5
+#define STM32H7_RCC_AHB2_RNG		6
+#define STM32H7_RCC_AHB2_SDMMC2		9
+
+#define STM32H7_AHB2_RESET(bit) (STM32H7_RCC_AHB2_##bit + (0x84 * 8))
+
+/* AHB4 */
+#define STM32H7_RCC_AHB4_GPIOA		0
+#define STM32H7_RCC_AHB4_GPIOB		1
+#define STM32H7_RCC_AHB4_GPIOC		2
+#define STM32H7_RCC_AHB4_GPIOD		3
+#define STM32H7_RCC_AHB4_GPIOE		4
+#define STM32H7_RCC_AHB4_GPIOF		5
+#define STM32H7_RCC_AHB4_GPIOG		6
+#define STM32H7_RCC_AHB4_GPIOH		7
+#define STM32H7_RCC_AHB4_GPIOI		8
+#define STM32H7_RCC_AHB4_GPIOJ		9
+#define STM32H7_RCC_AHB4_GPIOK		10
+#define STM32H7_RCC_AHB4_CRC		19
+#define STM32H7_RCC_AHB4_BDMA		21
+#define STM32H7_RCC_AHB4_ADC3		24
+#define STM32H7_RCC_AHB4_HSEM		25
+
+#define STM32H7_AHB4_RESET(bit) (STM32H7_RCC_AHB4_##bit + (0x88 * 8))
+
+/* APB3 */
+#define STM32H7_RCC_APB3_LTDC		3
+#define STM32H7_RCC_APB3_DSI		4
+
+#define STM32H7_APB3_RESET(bit) (STM32H7_RCC_APB3_##bit + (0x8C * 8))
+
+/* APB1L */
+#define STM32H7_RCC_APB1L_TIM2		0
+#define STM32H7_RCC_APB1L_TIM3		1
+#define STM32H7_RCC_APB1L_TIM4		2
+#define STM32H7_RCC_APB1L_TIM5		3
+#define STM32H7_RCC_APB1L_TIM6		4
+#define STM32H7_RCC_APB1L_TIM7		5
+#define STM32H7_RCC_APB1L_TIM12		6
+#define STM32H7_RCC_APB1L_TIM13		7
+#define STM32H7_RCC_APB1L_TIM14		8
+#define STM32H7_RCC_APB1L_LPTIM1	9
+#define STM32H7_RCC_APB1L_SPI2		14
+#define STM32H7_RCC_APB1L_SPI3		15
+#define STM32H7_RCC_APB1L_SPDIF_RX	16
+#define STM32H7_RCC_APB1L_USART2	17
+#define STM32H7_RCC_APB1L_USART3	18
+#define STM32H7_RCC_APB1L_UART4		19
+#define STM32H7_RCC_APB1L_UART5		20
+#define STM32H7_RCC_APB1L_I2C1		21
+#define STM32H7_RCC_APB1L_I2C2		22
+#define STM32H7_RCC_APB1L_I2C3		23
+#define STM32H7_RCC_APB1L_HDMICEC	27
+#define STM32H7_RCC_APB1L_DAC12		29
+#define STM32H7_RCC_APB1L_USART7	30
+#define STM32H7_RCC_APB1L_USART8	31
+
+#define STM32H7_APB1L_RESET(bit) (STM32H7_RCC_APB1L_##bit + (0x90 * 8))
+
+/* APB1H */
+#define STM32H7_RCC_APB1H_CRS		1
+#define STM32H7_RCC_APB1H_SWP		2
+#define STM32H7_RCC_APB1H_OPAMP		4
+#define STM32H7_RCC_APB1H_MDIOS		5
+#define STM32H7_RCC_APB1H_FDCAN		8
+
+#define STM32H7_APB1H_RESET(bit) (STM32H7_RCC_APB1H_##bit + (0x94 * 8))
+
+/* APB2 */
+#define STM32H7_RCC_APB2_TIM1		0
+#define STM32H7_RCC_APB2_TIM8		1
+#define STM32H7_RCC_APB2_USART1		4
+#define STM32H7_RCC_APB2_USART6		5
+#define STM32H7_RCC_APB2_SPI1		12
+#define STM32H7_RCC_APB2_SPI4		13
+#define STM32H7_RCC_APB2_TIM15		16
+#define STM32H7_RCC_APB2_TIM16		17
+#define STM32H7_RCC_APB2_TIM17		18
+#define STM32H7_RCC_APB2_SPI5		20
+#define STM32H7_RCC_APB2_SAI1		22
+#define STM32H7_RCC_APB2_SAI2		23
+#define STM32H7_RCC_APB2_SAI3		24
+#define STM32H7_RCC_APB2_DFSDM1		28
+#define STM32H7_RCC_APB2_HRTIM		29
+
+#define STM32H7_APB2_RESET(bit) (STM32H7_RCC_APB2_##bit + (0x98 * 8))
+
+/* APB4 */
+#define STM32H7_RCC_APB4_SYSCFG		1
+#define STM32H7_RCC_APB4_LPUART1	3
+#define STM32H7_RCC_APB4_SPI6		5
+#define STM32H7_RCC_APB4_I2C4		7
+#define STM32H7_RCC_APB4_LPTIM2		9
+#define STM32H7_RCC_APB4_LPTIM3		10
+#define STM32H7_RCC_APB4_LPTIM4		11
+#define STM32H7_RCC_APB4_LPTIM5		12
+#define STM32H7_RCC_APB4_COMP12		14
+#define STM32H7_RCC_APB4_VREF		15
+#define STM32H7_RCC_APB4_SAI4		21
+#define STM32H7_RCC_APB4_TMPSENS	26
+
+#define STM32H7_APB4_RESET(bit) (STM32H7_RCC_APB4_##bit + (0x9C * 8))
+
+#endif /* _DT_BINDINGS_MFD_STM32H7_RCC_H */
-- 
1.9.1

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[gabriel.fernandez]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch enables clocks for STM32H743 boards.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

for MFD changes:
Acked-by: Lee Jones <lee.jones@linaro.org>

for DT-Bindings
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
 drivers/clk/Makefile                               |    1 +
 drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
 include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
 include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
 5 files changed, 1793 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
 create mode 100644 drivers/clk/clk-stm32h7.c
 create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
 create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
new file mode 100644
index 0000000..442c50c
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
@@ -0,0 +1,82 @@
+STMicroelectronics STM32H7 Reset and Clock Controller
+=====================================================
+
+The RCC IP is both a reset and a clock controller.
+
+Please refer to clock-bindings.txt for common clock controller binding usage.
+Please also refer to reset.txt for common reset controller binding usage.
+
+Required properties:
+- compatible: Should be:
+  "st,stm32h743-rcc"
+
+- reg: should be register base and length as documented in the
+  datasheet
+
+- #reset-cells: 1, see below
+
+- #clock-cells : from common clock binding; shall be set to 1
+
+- clocks: External oscillator clock phandle
+  - high speed external clock signal (HSE)
+  - low speed external clock signal (LSE)
+  - external I2S clock (I2S_CKIN)
+
+Optional properties:
+- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
+  write protection (RTC clock).
+
+Example:
+
+	rcc: rcc@58024400 {
+		#reset-cells = <1>;
+		#clock-cells = <2>
+		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
+		reg = <0x58024400 0x400>;
+		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
+
+		st,syscfg = <&pwrcfg>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+The peripheral clock consumer should specify the desired clock by
+having the clock ID in its "clocks" phandle cell.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/stm32h7-clks.h header and can be used in device
+tree sources.
+
+Example:
+
+		timer5: timer@40000c00 {
+			compatible = "st,stm32-timer";
+			reg = <0x40000c00 0x400>;
+			interrupts = <50>;
+			clocks = <&rcc TIM5_CK>;
+
+		};
+
+Specifying softreset control of devices
+=======================================
+
+Device nodes should specify the reset channel required in their "resets"
+property, containing a phandle to the reset device node and an index specifying
+which channel to use.
+The index is the bit number within the RCC registers bank, starting from RCC
+base address.
+It is calculated as: index = register_offset / 4 * 32 + bit_offset.
+Where bit_offset is the bit offset within the register.
+
+For example, for CRC reset:
+  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
+
+All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
+header and can be used in device tree sources.
+
+example:
+
+	timer2 {
+		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
+	};
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index cd376b3..e50c18c 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_COMMON_CLK_SI5351)		+= clk-si5351.o
 obj-$(CONFIG_COMMON_CLK_SI514)		+= clk-si514.o
 obj-$(CONFIG_COMMON_CLK_SI570)		+= clk-si570.o
 obj-$(CONFIG_ARCH_STM32)		+= clk-stm32f4.o
+obj-$(CONFIG_ARCH_STM32)		+= clk-stm32h7.o
 obj-$(CONFIG_ARCH_TANGO)		+= clk-tango4.o
 obj-$(CONFIG_CLK_TWL6040)		+= clk-twl6040.o
 obj-$(CONFIG_ARCH_U300)			+= clk-u300.o
diff --git a/drivers/clk/clk-stm32h7.c b/drivers/clk/clk-stm32h7.c
new file mode 100644
index 0000000..993b26c
--- /dev/null
+++ b/drivers/clk/clk-stm32h7.c
@@ -0,0 +1,1409 @@
+/*
+ * Copyright (C) Gabriel Fernandez 2017
+ * Author: Gabriel Fernandez <gabriel.fernandez@st.com>
+ *
+ * License terms: GPL V2.0.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/stm32h7-clks.h>
+
+/* Reset Clock Control Registers */
+#define RCC_CR		0x00
+#define RCC_CFGR	0x10
+#define RCC_D1CFGR	0x18
+#define RCC_D2CFGR	0x1C
+#define RCC_D3CFGR	0x20
+#define RCC_PLLCKSELR	0x28
+#define RCC_PLLCFGR	0x2C
+#define RCC_PLL1DIVR	0x30
+#define RCC_PLL1FRACR	0x34
+#define RCC_PLL2DIVR	0x38
+#define RCC_PLL2FRACR	0x3C
+#define RCC_PLL3DIVR	0x40
+#define RCC_PLL3FRACR	0x44
+#define RCC_D1CCIPR	0x4C
+#define RCC_D2CCIP1R	0x50
+#define RCC_D2CCIP2R	0x54
+#define RCC_D3CCIPR	0x58
+#define RCC_BDCR	0x70
+#define RCC_CSR		0x74
+#define RCC_AHB3ENR	0xD4
+#define RCC_AHB1ENR	0xD8
+#define RCC_AHB2ENR	0xDC
+#define RCC_AHB4ENR	0xE0
+#define RCC_APB3ENR	0xE4
+#define RCC_APB1LENR	0xE8
+#define RCC_APB1HENR	0xEC
+#define RCC_APB2ENR	0xF0
+#define RCC_APB4ENR	0xF4
+
+static DEFINE_SPINLOCK(stm32rcc_lock);
+
+static void __iomem *base;
+static struct clk_hw **hws;
+
+/* System clock parent */
+static const char * const sys_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "pll1_p" };
+
+static const char * const tracein_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "pll1_r" };
+
+static const char * const per_src[] = {
+	"hsi_ker", "csi_ker", "hse_ck", "disabled" };
+
+static const char * const pll_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "no clock" };
+
+static const char * const sdmmc_src[] = { "pll1_q", "pll2_r" };
+
+static const char * const dsi_src[] = { "ck_dsi_phy", "pll2_q" };
+
+static const char * const qspi_src[] = {
+	"hclk", "pll1_q", "pll2_r", "per_ck" };
+
+static const char * const fmc_src[] = {
+	"hclk", "pll1_q", "pll2_r", "per_ck" };
+
+/* Kernel clock parent */
+static const char * const swp_src[] = {	"pclk1", "hsi_ker" };
+
+static const char * const fdcan_src[] = { "hse_ck", "pll1_q", "pll2_q" };
+
+static const char * const dfsdm1_src[] = { "pclk2", "sys_ck" };
+
+static const char * const spdifrx_src[] = {
+	"pll1_q", "pll2_r", "pll3_r", "hsi_ker" };
+
+static const char *spi_src1[5] = {
+	"pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const spi_src2[] = {
+	"pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const spi_src3[] = {
+	"pclk4", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const lptim_src1[] = {
+	"pclk1", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const lptim_src2[] = {
+	"pclk4", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const cec_src[] = {"lse_ck", "lsi_ck", "csi_ker_div122" };
+
+static const char * const usbotg_src[] = {"pll1_q", "pll3_q", "rc48_ck" };
+
+/* i2c 1,2,3 src */
+static const char * const i2c_src1[] = {
+	"pclk1", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const i2c_src2[] = {
+	"pclk4", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const rng_src[] = {
+	"rc48_ck", "pll1_q", "lse_ck", "lsi_ck" };
+
+/* usart 1,6 src */
+static const char * const usart_src1[] = {
+	"pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+/* usart 2,3,4,5,7,8 src */
+static const char * const usart_src2[] = {
+	"pclk1", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+static const char *sai_src[5] = {
+	"pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const adc_src[] = { "pll2_p", "pll3_r", "per_ck" };
+
+/* lptim 2,3,4,5 src */
+static const char * const lpuart1_src[] = {
+	"pclk3", "pll2_q", "pll3_q", "csi_ker", "lse_ck" };
+
+static const char * const hrtim_src[] = { "tim2_ker", "d1cpre" };
+
+/* RTC clock parent */
+static const char * const rtc_src[] = { "off", "lse_ck", "lsi_ck", "hse_1M" };
+
+/* Micro-controller output clock parent */
+static const char * const mco_src1[] = {
+	"hsi_ck", "lse_ck", "hse_ck", "pll1_q",	"rc48_ck" };
+
+static const char * const mco_src2[] = {
+	"sys_ck", "pll2_p", "hse_ck", "pll1_p", "csi_ck", "lsi_ck" };
+
+/* LCD clock */
+static const char * const ltdc_src[] = {"pll3_r"};
+
+/* Gate clock with ready bit and backup domain management */
+struct stm32_ready_gate {
+	struct	clk_gate gate;
+	u8	bit_rdy;
+};
+
+#define to_ready_gate_clk(_rgate) container_of(_rgate, struct stm32_ready_gate,\
+		gate)
+
+#define RGATE_TIMEOUT 10000
+
+static int ready_gate_clk_enable(struct clk_hw *hw)
+{
+	struct clk_gate *gate = to_clk_gate(hw);
+	struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+	int bit_status;
+	unsigned int timeout = RGATE_TIMEOUT;
+
+	if (clk_gate_ops.is_enabled(hw))
+		return 0;
+
+	clk_gate_ops.enable(hw);
+
+	/* We can't use readl_poll_timeout() because we can blocked if
+	 * someone enables this clock before clocksource changes.
+	 * Only jiffies counter is available. Jiffies are incremented by
+	 * interruptions and enable op does not allow to be interrupted.
+	 */
+	do {
+		bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+		if (bit_status)
+			udelay(100);
+
+	} while (bit_status && --timeout);
+
+	return bit_status;
+}
+
+static void ready_gate_clk_disable(struct clk_hw *hw)
+{
+	struct clk_gate *gate = to_clk_gate(hw);
+	struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+	int bit_status;
+	unsigned int timeout = RGATE_TIMEOUT;
+
+	if (!clk_gate_ops.is_enabled(hw))
+		return;
+
+	clk_gate_ops.disable(hw);
+
+	do {
+		bit_status = !!(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+		if (bit_status)
+			udelay(100);
+
+	} while (bit_status && --timeout);
+}
+
+static const struct clk_ops ready_gate_clk_ops = {
+	.enable		= ready_gate_clk_enable,
+	.disable	= ready_gate_clk_disable,
+	.is_enabled	= clk_gate_is_enabled,
+};
+
+static struct clk_hw *clk_register_ready_gate(struct device *dev,
+		const char *name, const char *parent_name,
+		void __iomem *reg, u8 bit_idx, u8 bit_rdy,
+		unsigned long flags, spinlock_t *lock)
+{
+	struct stm32_ready_gate *rgate;
+	struct clk_init_data init = { NULL };
+	struct clk_hw *hw;
+	int ret;
+
+	rgate = kzalloc(sizeof(*rgate), GFP_KERNEL);
+	if (!rgate)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &ready_gate_clk_ops;
+	init.flags = flags;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	rgate->bit_rdy = bit_rdy;
+	rgate->gate.lock = lock;
+	rgate->gate.reg = reg;
+	rgate->gate.bit_idx = bit_idx;
+	rgate->gate.hw.init = &init;
+
+	hw = &rgate->gate.hw;
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(rgate);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+struct gate_cfg {
+	u32 offset;
+	u8  bit_idx;
+};
+
+struct muxdiv_cfg {
+	u32 offset;
+	u8 shift;
+	u8 width;
+};
+
+struct composite_clk_cfg {
+	struct gate_cfg *gate;
+	struct muxdiv_cfg *mux;
+	struct muxdiv_cfg *div;
+	const char *name;
+	const char * const *parent_name;
+	int num_parents;
+	u32 flags;
+};
+
+struct composite_clk_gcfg_t {
+	u8 flags;
+	const struct clk_ops *ops;
+};
+
+/*
+ * General config definition of a composite clock (only clock diviser for rate)
+ */
+struct composite_clk_gcfg {
+	struct composite_clk_gcfg_t *mux;
+	struct composite_clk_gcfg_t *div;
+	struct composite_clk_gcfg_t *gate;
+};
+
+#define M_CFG_MUX(_mux_ops, _mux_flags)\
+	.mux = &(struct composite_clk_gcfg_t) { _mux_flags, _mux_ops}
+
+#define M_CFG_DIV(_rate_ops, _rate_flags)\
+	.div = &(struct composite_clk_gcfg_t) {_rate_flags, _rate_ops}
+
+#define M_CFG_GATE(_gate_ops, _gate_flags)\
+	.gate = &(struct composite_clk_gcfg_t) { _gate_flags, _gate_ops}
+
+static struct clk_mux *_get_cmux(void __iomem *reg, u8 shift, u8 width,
+		u32 flags, spinlock_t *lock)
+{
+	struct clk_mux *mux;
+
+	mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+	if (!mux)
+		return ERR_PTR(-ENOMEM);
+
+	mux->reg	= reg;
+	mux->shift	= shift;
+	mux->mask	= (1 << width) - 1;
+	mux->flags	= flags;
+	mux->lock	= lock;
+
+	return mux;
+}
+
+static struct clk_divider *_get_cdiv(void __iomem *reg, u8 shift, u8 width,
+		u32 flags, spinlock_t *lock)
+{
+	struct clk_divider *div;
+
+	div = kzalloc(sizeof(*div), GFP_KERNEL);
+
+	if (!div)
+		return ERR_PTR(-ENOMEM);
+
+	div->reg   = reg;
+	div->shift = shift;
+	div->width = width;
+	div->flags = flags;
+	div->lock  = lock;
+
+	return div;
+}
+
+static struct clk_gate *_get_cgate(void __iomem *reg, u8 bit_idx, u32 flags,
+		spinlock_t *lock)
+{
+	struct clk_gate *gate;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	gate->reg	= reg;
+	gate->bit_idx	= bit_idx;
+	gate->flags	= flags;
+	gate->lock	= lock;
+
+	return gate;
+}
+
+struct composite_cfg {
+	struct clk_hw *mux_hw;
+	struct clk_hw *div_hw;
+	struct clk_hw *gate_hw;
+
+	const struct clk_ops *mux_ops;
+	const struct clk_ops *div_ops;
+	const struct clk_ops *gate_ops;
+};
+
+static void get_cfg_composite_div(const struct composite_clk_gcfg *gcfg,
+		const struct composite_clk_cfg *cfg,
+		struct composite_cfg *composite, spinlock_t *lock)
+{
+	struct clk_mux     *mux = NULL;
+	struct clk_divider *div = NULL;
+	struct clk_gate    *gate = NULL;
+	const struct clk_ops *mux_ops, *div_ops, *gate_ops;
+	struct clk_hw *mux_hw;
+	struct clk_hw *div_hw;
+	struct clk_hw *gate_hw;
+
+	mux_ops = div_ops = gate_ops = NULL;
+	mux_hw = div_hw = gate_hw = NULL;
+
+	if (gcfg->mux && gcfg->mux) {
+		mux = _get_cmux(base + cfg->mux->offset,
+				cfg->mux->shift,
+				cfg->mux->width,
+				gcfg->mux->flags, lock);
+
+		if (!IS_ERR(mux)) {
+			mux_hw = &mux->hw;
+			mux_ops = gcfg->mux->ops ?
+				  gcfg->mux->ops : &clk_mux_ops;
+		}
+	}
+
+	if (gcfg->div && cfg->div) {
+		div = _get_cdiv(base + cfg->div->offset,
+				cfg->div->shift,
+				cfg->div->width,
+				gcfg->div->flags, lock);
+
+		if (!IS_ERR(div)) {
+			div_hw = &div->hw;
+			div_ops = gcfg->div->ops ?
+				  gcfg->div->ops : &clk_divider_ops;
+		}
+	}
+
+	if (gcfg->gate && gcfg->gate) {
+		gate = _get_cgate(base + cfg->gate->offset,
+				cfg->gate->bit_idx,
+				gcfg->gate->flags, lock);
+
+		if (!IS_ERR(gate)) {
+			gate_hw = &gate->hw;
+			gate_ops = gcfg->gate->ops ?
+				   gcfg->gate->ops : &clk_gate_ops;
+		}
+	}
+
+	composite->mux_hw = mux_hw;
+	composite->mux_ops = mux_ops;
+
+	composite->div_hw = div_hw;
+	composite->div_ops = div_ops;
+
+	composite->gate_hw = gate_hw;
+	composite->gate_ops = gate_ops;
+}
+
+/* Kernel Timer */
+struct timer_ker {
+	u8 dppre_shift;
+	struct clk_hw hw;
+	spinlock_t *lock;
+};
+
+#define to_timer_ker(_hw) container_of(_hw, struct timer_ker, hw)
+
+static unsigned long timer_ker_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct timer_ker *clk_elem = to_timer_ker(hw);
+	u32 timpre;
+	u32 dppre_shift = clk_elem->dppre_shift;
+	u32 prescaler;
+	u32 mul;
+
+	timpre = (readl(base + RCC_CFGR) >> 15) & 0x01;
+
+	prescaler = (readl(base + RCC_D2CFGR) >> dppre_shift) & 0x03;
+
+	mul = 2;
+
+	if (prescaler < 4)
+		mul = 1;
+
+	else if (timpre && prescaler > 4)
+		mul = 4;
+
+	return parent_rate * mul;
+}
+
+static const struct clk_ops timer_ker_ops = {
+	.recalc_rate = timer_ker_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_timer_ker(struct device *dev,
+		const char *name, const char *parent_name,
+		unsigned long flags,
+		u8 dppre_shift,
+		spinlock_t *lock)
+{
+	struct timer_ker *element;
+	struct clk_init_data init;
+	struct clk_hw *hw;
+	int err;
+
+	element = kzalloc(sizeof(*element), GFP_KERNEL);
+	if (!element)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &timer_ker_ops;
+	init.flags = flags;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	element->hw.init = &init;
+	element->lock = lock;
+	element->dppre_shift = dppre_shift;
+
+	hw = &element->hw;
+	err = clk_hw_register(dev, hw);
+
+	if (err) {
+		kfree(element);
+		return ERR_PTR(err);
+	}
+
+	return hw;
+}
+
+static const struct clk_div_table d1cpre_div_table[] = {
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+	{ 4, 1 }, { 5, 1 }, { 6, 1 }, { 7, 1},
+	{ 8, 2 }, { 9, 4 }, { 10, 8 }, { 11, 16 },
+	{ 12, 64 }, { 13, 128 }, { 14, 256 },
+	{ 15, 512 },
+	{ 0 },
+};
+
+static const struct clk_div_table ppre_div_table[] = {
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+	{ 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 },
+	{ 0 },
+};
+
+static void register_core_and_bus_clocks(void)
+{
+	/* CORE AND BUS */
+	hws[SYS_D1CPRE] = clk_hw_register_divider_table(NULL, "d1cpre",
+			"sys_ck", CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 8, 4, 0,
+			d1cpre_div_table, &stm32rcc_lock);
+
+	hws[HCLK] = clk_hw_register_divider_table(NULL, "hclk", "d1cpre",
+			CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 0, 4, 0,
+			d1cpre_div_table, &stm32rcc_lock);
+
+	/* D1 DOMAIN */
+	/* * CPU Systick */
+	hws[CPU_SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick",
+			"d1cpre", 0, 1, 8);
+
+	/* * APB3 peripheral */
+	hws[PCLK3] = clk_hw_register_divider_table(NULL, "pclk3", "hclk", 0,
+			base + RCC_D1CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+
+	/* D2 DOMAIN */
+	/* * APB1 peripheral */
+	hws[PCLK1] = clk_hw_register_divider_table(NULL, "pclk1", "hclk", 0,
+			base + RCC_D2CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+
+	/* Timers prescaler clocks */
+	clk_register_stm32_timer_ker(NULL, "tim1_ker", "pclk1", 0,
+			4, &stm32rcc_lock);
+
+	/* * APB2 peripheral */
+	hws[PCLK2] = clk_hw_register_divider_table(NULL, "pclk2", "hclk", 0,
+			base + RCC_D2CFGR, 8, 3, 0, ppre_div_table,
+			&stm32rcc_lock);
+
+	clk_register_stm32_timer_ker(NULL, "tim2_ker", "pclk2", 0, 8,
+			&stm32rcc_lock);
+
+	/* D3 DOMAIN */
+	/* * APB4 peripheral */
+	hws[PCLK4] = clk_hw_register_divider_table(NULL, "pclk4", "hclk", 0,
+			base + RCC_D3CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+}
+
+/* MUX clock configuration */
+struct stm32_mux_clk {
+	const char *name;
+	const char * const *parents;
+	u8 num_parents;
+	u32 offset;
+	u8 shift;
+	u8 width;
+	u32 flags;
+};
+
+#define M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, _flags)\
+{\
+	.name		= _name,\
+	.parents	= _parents,\
+	.num_parents	= ARRAY_SIZE(_parents),\
+	.offset		= _mux_offset,\
+	.shift		= _mux_shift,\
+	.width		= _mux_width,\
+	.flags		= _flags,\
+}
+
+#define M_MCLOC(_name, _parents, _mux_offset, _mux_shift, _mux_width)\
+	M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, 0)\
+
+static const struct stm32_mux_clk stm32_mclk[] __initconst = {
+	M_MCLOC("per_ck",	per_src,	RCC_D1CCIPR,	28, 3),
+	M_MCLOC("pllsrc",	pll_src,	RCC_PLLCKSELR,	 0, 3),
+	M_MCLOC("sys_ck",	sys_src,	RCC_CFGR,	 0, 3),
+	M_MCLOC("tracein_ck",	tracein_src,	RCC_CFGR,	 0, 3),
+};
+
+/* Oscillary clock configuration */
+struct stm32_osc_clk {
+	const char *name;
+	const char *parent;
+	u32 gate_offset;
+	u8 bit_idx;
+	u8 bit_rdy;
+	u32 flags;
+};
+
+#define OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, _flags)\
+{\
+	.name		= _name,\
+	.parent		= _parent,\
+	.gate_offset	= _gate_offset,\
+	.bit_idx	= _bit_idx,\
+	.bit_rdy	= _bit_rdy,\
+	.flags		= _flags,\
+}
+
+#define OSC_CLK(_name, _parent, _gate_offset, _bit_idx, _bit_rdy)\
+	OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, 0)
+
+static const struct stm32_osc_clk stm32_oclk[] __initconst = {
+	OSC_CLKF("hsi_ck",  "hsidiv",   RCC_CR,   0,  2, CLK_IGNORE_UNUSED),
+	OSC_CLKF("hsi_ker", "hsidiv",   RCC_CR,   1,  2, CLK_IGNORE_UNUSED),
+	OSC_CLKF("csi_ck",  "clk-csi",  RCC_CR,   7,  8, CLK_IGNORE_UNUSED),
+	OSC_CLKF("csi_ker", "clk-csi",  RCC_CR,   9,  8, CLK_IGNORE_UNUSED),
+	OSC_CLKF("rc48_ck", "clk-rc48", RCC_CR,  12, 13, CLK_IGNORE_UNUSED),
+	OSC_CLKF("lsi_ck",  "clk-lsi",  RCC_CSR,  0,  1, CLK_IGNORE_UNUSED),
+};
+
+/* PLL configuration */
+struct st32h7_pll_cfg {
+	u8 bit_idx;
+	u32 offset_divr;
+	u8 bit_frac_en;
+	u32 offset_frac;
+	u8 divm;
+};
+
+struct stm32_pll_data {
+	const char *name;
+	const char *parent_name;
+	unsigned long flags;
+	const struct st32h7_pll_cfg *cfg;
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll1 = {
+	.bit_idx = 24,
+	.offset_divr = RCC_PLL1DIVR,
+	.bit_frac_en = 0,
+	.offset_frac = RCC_PLL1FRACR,
+	.divm = 4,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll2 = {
+	.bit_idx = 26,
+	.offset_divr = RCC_PLL2DIVR,
+	.bit_frac_en = 4,
+	.offset_frac = RCC_PLL2FRACR,
+	.divm = 12,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll3 = {
+	.bit_idx = 28,
+	.offset_divr = RCC_PLL3DIVR,
+	.bit_frac_en = 8,
+	.offset_frac = RCC_PLL3FRACR,
+	.divm = 20,
+};
+
+static const struct stm32_pll_data stm32_pll[] = {
+	{ "vco1", "pllsrc", CLK_IGNORE_UNUSED, &stm32h7_pll1 },
+	{ "vco2", "pllsrc", 0, &stm32h7_pll2 },
+	{ "vco3", "pllsrc", 0, &stm32h7_pll3 },
+};
+
+struct stm32_fractional_divider {
+	void __iomem	*mreg;
+	u8		mshift;
+	u8		mwidth;
+	u32		mmask;
+
+	void __iomem	*nreg;
+	u8		nshift;
+	u8		nwidth;
+
+	void __iomem	*freg_status;
+	u8		freg_bit;
+	void __iomem	*freg_value;
+	u8		fshift;
+	u8		fwidth;
+
+	u8		flags;
+	struct clk_hw	hw;
+	spinlock_t	*lock;
+};
+
+struct stm32_pll_obj {
+	spinlock_t *lock;
+	struct stm32_fractional_divider div;
+	struct stm32_ready_gate rgate;
+	struct clk_hw hw;
+};
+
+#define to_pll(_hw) container_of(_hw, struct stm32_pll_obj, hw)
+
+static int pll_is_enabled(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	return ready_gate_clk_ops.is_enabled(_hw);
+}
+
+static int pll_enable(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	return ready_gate_clk_ops.enable(_hw);
+}
+
+static void pll_disable(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	ready_gate_clk_ops.disable(_hw);
+}
+
+static int pll_frac_is_enabled(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+
+	return (readl(fd->freg_status) >> fd->freg_bit) & 0x01;
+}
+
+static unsigned long pll_read_frac(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+
+	return (readl(fd->freg_value) >> fd->fshift) &
+		GENMASK(fd->fwidth - 1, 0);
+}
+
+static unsigned long pll_fd_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+	unsigned long m, n;
+	u32 val, mask;
+	u64 rate, rate1 = 0;
+
+	val = readl(fd->mreg);
+	mask = GENMASK(fd->mwidth - 1, 0) << fd->mshift;
+	m = (val & mask) >> fd->mshift;
+
+	val = readl(fd->nreg);
+	mask = GENMASK(fd->nwidth - 1, 0) << fd->nshift;
+	n = ((val & mask) >> fd->nshift) + 1;
+
+	if (!n || !m)
+		return parent_rate;
+
+	rate = (u64)parent_rate * n;
+	do_div(rate, m);
+
+	if (pll_frac_is_enabled(hw)) {
+		val = pll_read_frac(hw);
+		rate1 = (u64)parent_rate * (u64)val;
+		do_div(rate1, (m * 8191));
+	}
+
+	return rate + rate1;
+}
+
+static const struct clk_ops pll_ops = {
+	.enable		= pll_enable,
+	.disable	= pll_disable,
+	.is_enabled	= pll_is_enabled,
+	.recalc_rate	= pll_fd_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_pll(struct device *dev,
+		const char *name,
+		const char *parent,
+		unsigned long flags,
+		const struct st32h7_pll_cfg *cfg,
+		spinlock_t *lock)
+{
+	struct stm32_pll_obj *pll;
+	struct clk_init_data init = { NULL };
+	struct clk_hw *hw;
+	int ret;
+	struct stm32_fractional_divider *div = NULL;
+	struct stm32_ready_gate *rgate;
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &pll_ops;
+	init.flags = flags;
+	init.parent_names = &parent;
+	init.num_parents = 1;
+	pll->hw.init = &init;
+
+	hw = &pll->hw;
+	rgate = &pll->rgate;
+
+	rgate->bit_rdy = cfg->bit_idx + 1;
+	rgate->gate.lock = lock;
+	rgate->gate.reg = base + RCC_CR;
+	rgate->gate.bit_idx = cfg->bit_idx;
+
+	div = &pll->div;
+	div->flags = 0;
+	div->mreg = base + RCC_PLLCKSELR;
+	div->mshift = cfg->divm;
+	div->mwidth = 6;
+	div->nreg = base +  cfg->offset_divr;
+	div->nshift = 0;
+	div->nwidth = 9;
+
+	div->freg_status = base + RCC_PLLCFGR;
+	div->freg_bit = cfg->bit_frac_en;
+	div->freg_value = base +  cfg->offset_frac;
+	div->fshift = 3;
+	div->fwidth = 13;
+
+	div->lock = lock;
+
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(pll);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+/* ODF CLOCKS */
+static unsigned long odf_divider_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	return clk_divider_ops.recalc_rate(hw, parent_rate);
+}
+
+static long odf_divider_round_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long *prate)
+{
+	return clk_divider_ops.round_rate(hw, rate, prate);
+}
+
+static int odf_divider_set_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long parent_rate)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+	int ret;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
+
+	if (pll_status)
+		pll_enable(hwp);
+
+	return ret;
+}
+
+static const struct clk_ops odf_divider_ops = {
+	.recalc_rate	= odf_divider_recalc_rate,
+	.round_rate	= odf_divider_round_rate,
+	.set_rate	= odf_divider_set_rate,
+};
+
+static int odf_gate_enable(struct clk_hw *hw)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+	int ret;
+
+	if (clk_gate_ops.is_enabled(hw))
+		return 0;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	ret = clk_gate_ops.enable(hw);
+
+	if (pll_status)
+		pll_enable(hwp);
+
+	return ret;
+}
+
+static void odf_gate_disable(struct clk_hw *hw)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+
+	if (!clk_gate_ops.is_enabled(hw))
+		return;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	clk_gate_ops.disable(hw);
+
+	if (pll_status)
+		pll_enable(hwp);
+}
+
+static const struct clk_ops odf_gate_ops = {
+	.enable		= odf_gate_enable,
+	.disable	= odf_gate_disable,
+	.is_enabled	= clk_gate_is_enabled,
+};
+
+static struct composite_clk_gcfg odf_clk_gcfg = {
+	M_CFG_DIV(&odf_divider_ops, 0),
+	M_CFG_GATE(&odf_gate_ops, 0),
+};
+
+#define M_ODF_F(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width, _flags)\
+{\
+	.mux = NULL,\
+	.div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx },\
+	.name = _name,\
+	.parent_name = &(const char *) {_parent},\
+	.num_parents = 1,\
+	.flags = _flags,\
+}
+
+#define M_ODF(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width)\
+M_ODF_F(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width, 0)\
+
+static const struct composite_clk_cfg stm32_odf[3][3] = {
+	{
+		M_ODF_F("pll1_p", "vco1", RCC_PLLCFGR, 16, RCC_PLL1DIVR,  9, 7,
+				CLK_IGNORE_UNUSED),
+		M_ODF_F("pll1_q", "vco1", RCC_PLLCFGR, 17, RCC_PLL1DIVR, 16, 7,
+				CLK_IGNORE_UNUSED),
+		M_ODF_F("pll1_r", "vco1", RCC_PLLCFGR, 18, RCC_PLL1DIVR, 24, 7,
+				CLK_IGNORE_UNUSED),
+	},
+
+	{
+		M_ODF("pll2_p", "vco2", RCC_PLLCFGR, 19, RCC_PLL2DIVR,  9, 7),
+		M_ODF("pll2_q", "vco2", RCC_PLLCFGR, 20, RCC_PLL2DIVR, 16, 7),
+		M_ODF("pll2_r", "vco2", RCC_PLLCFGR, 21, RCC_PLL2DIVR, 24, 7),
+	},
+	{
+		M_ODF("pll3_p", "vco3", RCC_PLLCFGR, 22, RCC_PLL3DIVR,  9, 7),
+		M_ODF("pll3_q", "vco3", RCC_PLLCFGR, 23, RCC_PLL3DIVR, 16, 7),
+		M_ODF("pll3_r", "vco3", RCC_PLLCFGR, 24, RCC_PLL3DIVR, 24, 7),
+	}
+};
+
+/* PERIF CLOCKS */
+struct pclk_t {
+	u32 gate_offset;
+	u8 bit_idx;
+	const char *name;
+	const char *parent;
+	u32 flags;
+};
+
+#define PER_CLKF(_gate_offset, _bit_idx, _name, _parent, _flags)\
+{\
+	.gate_offset	= _gate_offset,\
+	.bit_idx	= _bit_idx,\
+	.name		= _name,\
+	.parent		= _parent,\
+	.flags		= _flags,\
+}
+
+#define PER_CLK(_gate_offset, _bit_idx, _name, _parent)\
+	PER_CLKF(_gate_offset, _bit_idx, _name, _parent, 0)
+
+static const struct pclk_t pclk[] = {
+	PER_CLK(RCC_AHB3ENR, 31, "d1sram1", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 30, "itcm", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 29, "dtcm2", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 28, "dtcm1", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 8, "flitf", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 5, "jpgdec", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 4, "dma2d", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 0, "mdma", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 28, "usb2ulpi", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 26, "usb1ulpi", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 17, "eth1rx", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 16, "eth1tx", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 15, "eth1mac", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 14, "art", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 1, "dma2", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 0, "dma1", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 31, "d2sram3", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 30, "d2sram2", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 29, "d2sram1", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 5, "hash", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 4, "crypt", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 0, "camitf", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 28, "bkpram", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 25, "hsem", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 21, "bdma", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 19, "crc", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 10, "gpiok", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 9, "gpioj", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 8, "gpioi", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 7, "gpioh", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 6, "gpiog", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 5, "gpiof", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 4, "gpioe", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 3, "gpiod", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 2, "gpioc", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 1, "gpiob", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 0, "gpioa", "hclk"),
+	PER_CLK(RCC_APB3ENR, 6, "wwdg1", "pclk3"),
+	PER_CLK(RCC_APB1LENR, 29, "dac12", "pclk1"),
+	PER_CLK(RCC_APB1LENR, 11, "wwdg2", "pclk1"),
+	PER_CLK(RCC_APB1LENR, 8, "tim14", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 7, "tim13", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 6, "tim12", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 5, "tim7", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 4, "tim6", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 3, "tim5", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 2, "tim4", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 1, "tim3", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 0, "tim2", "tim1_ker"),
+	PER_CLK(RCC_APB1HENR, 5, "mdios", "pclk1"),
+	PER_CLK(RCC_APB1HENR, 4, "opamp", "pclk1"),
+	PER_CLK(RCC_APB1HENR, 1, "crs", "pclk1"),
+	PER_CLK(RCC_APB2ENR, 18, "tim17", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 17, "tim16", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 16, "tim15", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 1, "tim8", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 0, "tim1", "tim2_ker"),
+	PER_CLK(RCC_APB4ENR, 26, "tmpsens", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 16, "rtcapb", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 15, "vref", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 14, "comp12", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 1, "syscfg", "pclk4"),
+};
+
+/* KERNEL CLOCKS */
+#define KER_CLKF(_gate_offset, _bit_idx,\
+		_mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name,\
+		_flags) \
+{ \
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+	.mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+	.name = _name, \
+	.parent_name = _parent_name, \
+	.num_parents = ARRAY_SIZE(_parent_name),\
+	.flags = _flags,\
+}
+
+#define KER_CLK(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name) \
+KER_CLKF(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name, 0)\
+
+#define KER_CLKF_NOMUX(_gate_offset, _bit_idx,\
+		_name, _parent_name,\
+		_flags) \
+{ \
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+	.mux = NULL,\
+	.name = _name, \
+	.parent_name = _parent_name, \
+	.num_parents = 1,\
+	.flags = _flags,\
+}
+
+static const struct composite_clk_cfg kclk[] = {
+	KER_CLK(RCC_AHB3ENR,  16, RCC_D1CCIPR,	16, 1, "sdmmc1", sdmmc_src),
+	KER_CLKF(RCC_AHB3ENR, 14, RCC_D1CCIPR,	 4, 2, "quadspi", qspi_src,
+			CLK_IGNORE_UNUSED),
+	KER_CLKF(RCC_AHB3ENR, 12, RCC_D1CCIPR,	 0, 2, "fmc", fmc_src,
+			CLK_IGNORE_UNUSED),
+	KER_CLK(RCC_AHB1ENR,  27, RCC_D2CCIP2R,	20, 2, "usb2otg", usbotg_src),
+	KER_CLK(RCC_AHB1ENR,  25, RCC_D2CCIP2R, 20, 2, "usb1otg", usbotg_src),
+	KER_CLK(RCC_AHB1ENR,   5, RCC_D3CCIPR,	16, 2, "adc12", adc_src),
+	KER_CLK(RCC_AHB2ENR,   9, RCC_D1CCIPR,	16, 1, "sdmmc2", sdmmc_src),
+	KER_CLK(RCC_AHB2ENR,   6, RCC_D2CCIP2R,	 8, 2, "rng", rng_src),
+	KER_CLK(RCC_AHB4ENR,  24, RCC_D3CCIPR,  16, 2, "adc3", adc_src),
+	KER_CLKF(RCC_APB3ENR,   4, RCC_D1CCIPR,	 8, 1, "dsi", dsi_src,
+			CLK_SET_RATE_PARENT),
+	KER_CLKF_NOMUX(RCC_APB3ENR, 3, "ltdc", ltdc_src, CLK_SET_RATE_PARENT),
+	KER_CLK(RCC_APB1LENR, 31, RCC_D2CCIP2R,  0, 3, "usart8", usart_src2),
+	KER_CLK(RCC_APB1LENR, 30, RCC_D2CCIP2R,  0, 3, "usart7", usart_src2),
+	KER_CLK(RCC_APB1LENR, 27, RCC_D2CCIP2R, 22, 2, "hdmicec", cec_src),
+	KER_CLK(RCC_APB1LENR, 23, RCC_D2CCIP2R, 12, 2, "i2c3", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 22, RCC_D2CCIP2R, 12, 2, "i2c2", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 21, RCC_D2CCIP2R, 12, 2, "i2c1", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 20, RCC_D2CCIP2R,	 0, 3, "uart5", usart_src2),
+	KER_CLK(RCC_APB1LENR, 19, RCC_D2CCIP2R,  0, 3, "uart4", usart_src2),
+	KER_CLK(RCC_APB1LENR, 18, RCC_D2CCIP2R,  0, 3, "usart3", usart_src2),
+	KER_CLK(RCC_APB1LENR, 17, RCC_D2CCIP2R,  0, 3, "usart2", usart_src2),
+	KER_CLK(RCC_APB1LENR, 16, RCC_D2CCIP1R, 20, 2, "spdifrx", spdifrx_src),
+	KER_CLK(RCC_APB1LENR, 15, RCC_D2CCIP1R, 16, 3, "spi3", spi_src1),
+	KER_CLK(RCC_APB1LENR, 14, RCC_D2CCIP1R, 16, 3, "spi2", spi_src1),
+	KER_CLK(RCC_APB1LENR,  9, RCC_D2CCIP2R, 28, 3, "lptim1", lptim_src1),
+	KER_CLK(RCC_APB1HENR,  8, RCC_D2CCIP1R, 28, 2, "fdcan", fdcan_src),
+	KER_CLK(RCC_APB1HENR,  2, RCC_D2CCIP1R, 31, 1, "swp", swp_src),
+	KER_CLK(RCC_APB2ENR,  29, RCC_CFGR,	14, 1, "hrtim", hrtim_src),
+	KER_CLK(RCC_APB2ENR,  28, RCC_D2CCIP1R, 24, 1, "dfsdm1", dfsdm1_src),
+	KER_CLKF(RCC_APB2ENR,  24, RCC_D2CCIP1R,  6, 3, "sai3", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLKF(RCC_APB2ENR,  23, RCC_D2CCIP1R,  6, 3, "sai2", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLKF(RCC_APB2ENR,  22, RCC_D2CCIP1R,  0, 3, "sai1", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLK(RCC_APB2ENR,  20, RCC_D2CCIP1R, 16, 3, "spi5", spi_src2),
+	KER_CLK(RCC_APB2ENR,  13, RCC_D2CCIP1R, 16, 3, "spi4", spi_src2),
+	KER_CLK(RCC_APB2ENR,  12, RCC_D2CCIP1R, 16, 3, "spi1", spi_src1),
+	KER_CLK(RCC_APB2ENR,   5, RCC_D2CCIP2R,  3, 3, "usart6", usart_src1),
+	KER_CLK(RCC_APB2ENR,   4, RCC_D2CCIP2R,  3, 3, "usart1", usart_src1),
+	KER_CLK(RCC_APB4ENR,  21, RCC_D3CCIPR,	24, 3, "sai4b", sai_src),
+	KER_CLK(RCC_APB4ENR,  21, RCC_D3CCIPR,	21, 3, "sai4a", sai_src),
+	KER_CLK(RCC_APB4ENR,  12, RCC_D3CCIPR,	13, 3, "lptim5", lptim_src2),
+	KER_CLK(RCC_APB4ENR,  11, RCC_D3CCIPR,	13, 3, "lptim4", lptim_src2),
+	KER_CLK(RCC_APB4ENR,  10, RCC_D3CCIPR,	13, 3, "lptim3", lptim_src2),
+	KER_CLK(RCC_APB4ENR,   9, RCC_D3CCIPR,	10, 3, "lptim2", lptim_src2),
+	KER_CLK(RCC_APB4ENR,   7, RCC_D3CCIPR,	 8, 2, "i2c4", i2c_src2),
+	KER_CLK(RCC_APB4ENR,   5, RCC_D3CCIPR,	28, 3, "spi6", spi_src3),
+	KER_CLK(RCC_APB4ENR,   3, RCC_D3CCIPR,	 0, 3, "lpuart1", lpuart1_src),
+};
+
+static struct composite_clk_gcfg kernel_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_GATE(NULL, 0),
+};
+
+/* RTC clock */
+/*
+ * RTC & LSE registers are protected against parasitic write access.
+ * PWR_CR_DBP bit must be set to enable write access to RTC registers.
+ */
+/* STM32_PWR_CR */
+#define PWR_CR				0x00
+/* STM32_PWR_CR bit field */
+#define PWR_CR_DBP			BIT(8)
+
+static struct composite_clk_gcfg rtc_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_GATE(NULL, 0),
+};
+
+static const struct composite_clk_cfg rtc_clk =
+	KER_CLK(RCC_BDCR, 15, RCC_BDCR, 8, 2, "rtc_ck", rtc_src);
+
+/* Micro-controller output clock */
+static struct composite_clk_gcfg mco_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_DIV(NULL,	CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO),
+};
+
+#define M_MCO_F(_name, _parents, _mux_offset,  _mux_shift, _mux_width,\
+		_rate_offset, _rate_shift, _rate_width,\
+		_flags)\
+{\
+	.mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+	.div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+	.gate = NULL,\
+	.name = _name,\
+	.parent_name = _parents,\
+	.num_parents = ARRAY_SIZE(_parents),\
+	.flags = _flags,\
+}
+
+static const struct composite_clk_cfg mco_clk[] = {
+	M_MCO_F("mco1", mco_src1, RCC_CFGR, 22, 4, RCC_CFGR, 18, 4, 0),
+	M_MCO_F("mco2", mco_src2, RCC_CFGR, 29, 3, RCC_CFGR, 25, 4, 0),
+};
+
+static void __init stm32h7_rcc_init(struct device_node *np)
+{
+	struct clk_hw_onecell_data *clk_data;
+	struct composite_cfg c_cfg;
+	int n;
+	const char *hse_clk, *lse_clk, *i2s_clk;
+	struct regmap *pdrm;
+
+	clk_data = kzalloc(sizeof(*clk_data) +
+			sizeof(*clk_data->hws) * STM32H7_MAX_CLKS,
+			GFP_KERNEL);
+	if (!clk_data)
+		return;
+
+	clk_data->num = STM32H7_MAX_CLKS;
+
+	hws = clk_data->hws;
+
+	for (n = 0; n < STM32H7_MAX_CLKS; n++)
+		hws[n] = ERR_PTR(-ENOENT);
+
+	/* get RCC base @ from DT */
+	base = of_iomap(np, 0);
+	if (!base) {
+		pr_err("%s: unable to map resource", np->name);
+		goto err_free_clks;
+	}
+
+	pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+	if (IS_ERR(pdrm))
+		pr_warn("%s: Unable to get syscfg\n", __func__);
+	else
+		/* In any case disable backup domain write protection
+		 * and will never be enabled.
+		 * Needed by LSE & RTC clocks. */
+		regmap_update_bits(pdrm, PWR_CR, PWR_CR_DBP, PWR_CR_DBP);
+
+	/* Put parent names from DT */
+	hse_clk = of_clk_get_parent_name(np, 0);
+	lse_clk = of_clk_get_parent_name(np, 1);
+	i2s_clk = of_clk_get_parent_name(np, 2);
+
+	sai_src[3] = i2s_clk;
+	spi_src1[3] = i2s_clk;
+
+	/* Register Internal oscillators */
+	clk_hw_register_fixed_rate(NULL, "clk-hsi", NULL, 0, 64000000);
+	clk_hw_register_fixed_rate(NULL, "clk-csi", NULL, 0, 4000000);
+	clk_hw_register_fixed_rate(NULL, "clk-lsi", NULL, 0, 32000);
+	clk_hw_register_fixed_rate(NULL, "clk-rc48", NULL, 0, 48000);
+
+	/* This clock is coming from outside. Frequencies unknown */
+	hws[CK_DSI_PHY] = clk_hw_register_fixed_rate(NULL, "ck_dsi_phy", NULL,
+			0, 0);
+
+	hws[HSI_DIV] = clk_hw_register_divider(NULL, "hsidiv", "clk-hsi", 0,
+			base + RCC_CR, 3, 2, CLK_DIVIDER_POWER_OF_TWO,
+			&stm32rcc_lock);
+
+	hws[HSE_1M] = clk_hw_register_divider(NULL, "hse_1M", "hse_ck",	0,
+			base + RCC_CFGR, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO,
+			&stm32rcc_lock);
+
+	/* Mux system clocks */
+	for (n = 0; n < ARRAY_SIZE(stm32_mclk); n++)
+		hws[MCLK_BANK + n] = clk_hw_register_mux(NULL,
+				stm32_mclk[n].name,
+				stm32_mclk[n].parents,
+				stm32_mclk[n].num_parents,
+				stm32_mclk[n].flags,
+				stm32_mclk[n].offset + base,
+				stm32_mclk[n].shift,
+				stm32_mclk[n].width,
+				0,
+				&stm32rcc_lock);
+
+	register_core_and_bus_clocks();
+
+	/* Oscillary clocks */
+	for (n = 0; n < ARRAY_SIZE(stm32_oclk); n++)
+		hws[OSC_BANK + n] = clk_register_ready_gate(NULL,
+				stm32_oclk[n].name,
+				stm32_oclk[n].parent,
+				stm32_oclk[n].gate_offset + base,
+				stm32_oclk[n].bit_idx,
+				stm32_oclk[n].bit_rdy,
+				stm32_oclk[n].flags,
+				&stm32rcc_lock);
+
+	hws[HSE_CK] = clk_register_ready_gate(NULL,
+				"hse_ck",
+				hse_clk,
+				RCC_CR + base,
+				16, 17,
+				0,
+				&stm32rcc_lock);
+
+	hws[LSE_CK] = clk_register_ready_gate(NULL,
+				"lse_ck",
+				lse_clk,
+				RCC_BDCR + base,
+				0, 1,
+				0,
+				&stm32rcc_lock);
+
+	hws[CSI_KER_DIV122 + n] = clk_hw_register_fixed_factor(NULL,
+			"csi_ker_div122", "csi_ker", 0, 1, 122);
+
+	/* PLLs */
+	for (n = 0; n < ARRAY_SIZE(stm32_pll); n++) {
+		int odf;
+
+		/* Register the VCO */
+		clk_register_stm32_pll(NULL, stm32_pll[n].name,
+				stm32_pll[n].parent_name, stm32_pll[n].flags,
+				stm32_pll[n].cfg,
+				&stm32rcc_lock);
+
+		/* Register the 3 output dividers */
+		for (odf = 0; odf < 3; odf++) {
+			int idx = n * 3 + odf;
+
+			get_cfg_composite_div(&odf_clk_gcfg, &stm32_odf[n][odf],
+					&c_cfg,	&stm32rcc_lock);
+
+			hws[ODF_BANK + idx] = clk_hw_register_composite(NULL,
+					stm32_odf[n][odf].name,
+					stm32_odf[n][odf].parent_name,
+					stm32_odf[n][odf].num_parents,
+					c_cfg.mux_hw, c_cfg.mux_ops,
+					c_cfg.div_hw, c_cfg.div_ops,
+					c_cfg.gate_hw, c_cfg.gate_ops,
+					stm32_odf[n][odf].flags);
+		}
+	}
+
+	/* Peripheral clocks */
+	for (n = 0; n < ARRAY_SIZE(pclk); n++)
+		hws[PERIF_BANK + n] = clk_hw_register_gate(NULL, pclk[n].name,
+				pclk[n].parent,
+				pclk[n].flags, base + pclk[n].gate_offset,
+				pclk[n].bit_idx, pclk[n].flags, &stm32rcc_lock);
+
+	/* Kernel clocks */
+	for (n = 0; n < ARRAY_SIZE(kclk); n++) {
+		get_cfg_composite_div(&kernel_clk_cfg, &kclk[n], &c_cfg,
+				&stm32rcc_lock);
+
+		hws[KERN_BANK + n] = clk_hw_register_composite(NULL,
+				kclk[n].name,
+				kclk[n].parent_name,
+				kclk[n].num_parents,
+				c_cfg.mux_hw, c_cfg.mux_ops,
+				c_cfg.div_hw, c_cfg.div_ops,
+				c_cfg.gate_hw, c_cfg.gate_ops,
+				kclk[n].flags);
+	}
+
+	/* RTC clock (default state is off) */
+	clk_hw_register_fixed_rate(NULL, "off", NULL, 0, 0);
+
+	get_cfg_composite_div(&rtc_clk_cfg, &rtc_clk, &c_cfg, &stm32rcc_lock);
+
+	hws[RTC_CK] = clk_hw_register_composite(NULL,
+			rtc_clk.name,
+			rtc_clk.parent_name,
+			rtc_clk.num_parents,
+			c_cfg.mux_hw, c_cfg.mux_ops,
+			c_cfg.div_hw, c_cfg.div_ops,
+			c_cfg.gate_hw, c_cfg.gate_ops,
+			rtc_clk.flags);
+
+	/* Micro-controller clocks */
+	for (n = 0; n < ARRAY_SIZE(mco_clk); n++) {
+		get_cfg_composite_div(&mco_clk_cfg, &mco_clk[n], &c_cfg,
+				&stm32rcc_lock);
+
+		hws[MCO_BANK + n] = clk_hw_register_composite(NULL,
+				mco_clk[n].name,
+				mco_clk[n].parent_name,
+				mco_clk[n].num_parents,
+				c_cfg.mux_hw, c_cfg.mux_ops,
+				c_cfg.div_hw, c_cfg.div_ops,
+				c_cfg.gate_hw, c_cfg.gate_ops,
+				mco_clk[n].flags);
+	}
+
+	of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
+
+	return;
+
+err_free_clks:
+	kfree(clk_data);
+}
+
+/* The RCC node is a clock and reset controller, and these
+ * functionalities are supported by different drivers that
+ * matches the same compatible strings.
+ */
+CLK_OF_DECLARE_DRIVER(stm32h7_rcc, "st,stm32h743-rcc", stm32h7_rcc_init);
diff --git a/include/dt-bindings/clock/stm32h7-clks.h b/include/dt-bindings/clock/stm32h7-clks.h
new file mode 100644
index 0000000..6637272
--- /dev/null
+++ b/include/dt-bindings/clock/stm32h7-clks.h
@@ -0,0 +1,165 @@
+/* SYS, CORE AND BUS CLOCKS */
+#define SYS_D1CPRE 0
+#define HCLK 1
+#define PCLK1 2
+#define PCLK2 3
+#define PCLK3 4
+#define PCLK4 5
+#define HSI_DIV 6
+#define HSE_1M 7
+#define I2S_CKIN 8
+#define CK_DSI_PHY 9
+#define HSE_CK 10
+#define LSE_CK 11
+#define CSI_KER_DIV122 12
+#define RTC_CK 13
+#define CPU_SYSTICK 14
+
+/* OSCILLATOR BANK */
+#define OSC_BANK 18
+#define HSI_CK 18
+#define HSI_KER_CK 19
+#define CSI_CK 20
+#define CSI_KER_CK 21
+#define RC48_CK 22
+#define LSI_CK 23
+
+/* MCLOCK BANK */
+#define MCLK_BANK 28
+#define PER_CK 28
+#define PLLSRC 29
+#define SYS_CK 30
+#define TRACEIN_CK 31
+
+/* ODF BANK */
+#define ODF_BANK 32
+#define PLL1_P 32
+#define PLL1_Q 33
+#define PLL1_R 34
+#define PLL2_P 35
+#define PLL2_Q 36
+#define PLL2_R 37
+#define PLL3_P 38
+#define PLL3_Q 39
+#define PLL3_R 40
+
+/* MCO BANK */
+#define MCO_BANK 41
+#define MCO1 41
+#define MCO2 42
+
+/* PERIF BANK */
+#define PERIF_BANK 50
+#define D1SRAM1_CK 50
+#define ITCM_CK 51
+#define DTCM2_CK 52
+#define DTCM1_CK 53
+#define FLITF_CK 54
+#define JPGDEC_CK 55
+#define DMA2D_CK 56
+#define MDMA_CK 57
+#define USB2ULPI_CK 58
+#define USB1ULPI_CK 59
+#define ETH1RX_CK 60
+#define ETH1TX_CK 61
+#define ETH1MAC_CK 62
+#define ART_CK 63
+#define DMA2_CK 64
+#define DMA1_CK 65
+#define D2SRAM3_CK 66
+#define D2SRAM2_CK 67
+#define D2SRAM1_CK 68
+#define HASH_CK 69
+#define CRYPT_CK 70
+#define CAMITF_CK 71
+#define BKPRAM_CK 72
+#define HSEM_CK 73
+#define BDMA_CK 74
+#define CRC_CK 75
+#define GPIOK_CK 76
+#define GPIOJ_CK 77
+#define GPIOI_CK 78
+#define GPIOH_CK 79
+#define GPIOG_CK 80
+#define GPIOF_CK 81
+#define GPIOE_CK 82
+#define GPIOD_CK 83
+#define GPIOC_CK 84
+#define GPIOB_CK 85
+#define GPIOA_CK 86
+#define WWDG1_CK 87
+#define DAC12_CK 88
+#define WWDG2_CK 89
+#define TIM14_CK 90
+#define TIM13_CK 91
+#define TIM12_CK 92
+#define TIM7_CK 93
+#define TIM6_CK 94
+#define TIM5_CK 95
+#define TIM4_CK 96
+#define TIM3_CK 97
+#define TIM2_CK 98
+#define MDIOS_CK 99
+#define OPAMP_CK 100
+#define CRS_CK 101
+#define TIM17_CK 102
+#define TIM16_CK 103
+#define TIM15_CK 104
+#define TIM8_CK 105
+#define TIM1_CK 106
+#define TMPSENS_CK 107
+#define RTCAPB_CK 108
+#define VREF_CK 109
+#define COMP12_CK 110
+#define SYSCFG_CK 111
+
+/* KERNEL BANK */
+#define KERN_BANK 120
+#define SDMMC1_CK 120
+#define QUADSPI_CK 121
+#define FMC_CK 122
+#define USB2OTG_CK 123
+#define USB1OTG_CK 124
+#define ADC12_CK 125
+#define SDMMC2_CK 126
+#define RNG_CK 127
+#define ADC3_CK 128
+#define DSI_CK 129
+#define LTDC_CK 130
+#define USART8_CK 131
+#define USART7_CK 132
+#define HDMICEC_CK 133
+#define I2C3_CK 134
+#define I2C2_CK 135
+#define I2C1_CK 136
+#define UART5_CK 137
+#define UART4_CK 138
+#define USART3_CK 139
+#define USART2_CK 140
+#define SPDIFRX_CK 141
+#define SPI3_CK 142
+#define SPI2_CK 143
+#define LPTIM1_CK 144
+#define FDCAN_CK 145
+#define SWP_CK 146
+#define HRTIM_CK 147
+#define DFSDM1_CK 148
+#define SAI3_CK 149
+#define SAI2_CK 150
+#define SAI1_CK 151
+#define SPI5_CK 152
+#define SPI4_CK 153
+#define SPI1_CK 154
+#define USART6_CK 155
+#define USART1_CK 156
+#define SAI4B_CK 157
+#define SAI4A_CK 158
+#define LPTIM5_CK 159
+#define LPTIM4_CK 160
+#define LPTIM3_CK 161
+#define LPTIM2_CK 162
+#define I2C4_CK 163
+#define SPI6_CK 164
+#define LPUART1_CK 165
+
+#define STM32H7_MAX_CLKS 166
diff --git a/include/dt-bindings/mfd/stm32h7-rcc.h b/include/dt-bindings/mfd/stm32h7-rcc.h
new file mode 100644
index 0000000..461a8e0
--- /dev/null
+++ b/include/dt-bindings/mfd/stm32h7-rcc.h
@@ -0,0 +1,136 @@
+/*
+ * This header provides constants for the STM32H7 RCC IP
+ */
+
+#ifndef _DT_BINDINGS_MFD_STM32H7_RCC_H
+#define _DT_BINDINGS_MFD_STM32H7_RCC_H
+
+/* AHB3 */
+#define STM32H7_RCC_AHB3_MDMA		0
+#define STM32H7_RCC_AHB3_DMA2D		4
+#define STM32H7_RCC_AHB3_JPGDEC		5
+#define STM32H7_RCC_AHB3_FMC		12
+#define STM32H7_RCC_AHB3_QUADSPI	14
+#define STM32H7_RCC_AHB3_SDMMC1		16
+#define STM32H7_RCC_AHB3_CPU		31
+
+#define STM32H7_AHB3_RESET(bit) (STM32H7_RCC_AHB3_##bit + (0x7C * 8))
+
+/* AHB1 */
+#define STM32H7_RCC_AHB1_DMA1		0
+#define STM32H7_RCC_AHB1_DMA2		1
+#define STM32H7_RCC_AHB1_ADC12		5
+#define STM32H7_RCC_AHB1_ART		14
+#define STM32H7_RCC_AHB1_ETH1MAC	15
+#define STM32H7_RCC_AHB1_USB1OTG	25
+#define STM32H7_RCC_AHB1_USB2OTG	27
+
+#define STM32H7_AHB1_RESET(bit) (STM32H7_RCC_AHB1_##bit + (0x80 * 8))
+
+/* AHB2 */
+#define STM32H7_RCC_AHB2_CAMITF		0
+#define STM32H7_RCC_AHB2_CRYPT		4
+#define STM32H7_RCC_AHB2_HASH		5
+#define STM32H7_RCC_AHB2_RNG		6
+#define STM32H7_RCC_AHB2_SDMMC2		9
+
+#define STM32H7_AHB2_RESET(bit) (STM32H7_RCC_AHB2_##bit + (0x84 * 8))
+
+/* AHB4 */
+#define STM32H7_RCC_AHB4_GPIOA		0
+#define STM32H7_RCC_AHB4_GPIOB		1
+#define STM32H7_RCC_AHB4_GPIOC		2
+#define STM32H7_RCC_AHB4_GPIOD		3
+#define STM32H7_RCC_AHB4_GPIOE		4
+#define STM32H7_RCC_AHB4_GPIOF		5
+#define STM32H7_RCC_AHB4_GPIOG		6
+#define STM32H7_RCC_AHB4_GPIOH		7
+#define STM32H7_RCC_AHB4_GPIOI		8
+#define STM32H7_RCC_AHB4_GPIOJ		9
+#define STM32H7_RCC_AHB4_GPIOK		10
+#define STM32H7_RCC_AHB4_CRC		19
+#define STM32H7_RCC_AHB4_BDMA		21
+#define STM32H7_RCC_AHB4_ADC3		24
+#define STM32H7_RCC_AHB4_HSEM		25
+
+#define STM32H7_AHB4_RESET(bit) (STM32H7_RCC_AHB4_##bit + (0x88 * 8))
+
+/* APB3 */
+#define STM32H7_RCC_APB3_LTDC		3
+#define STM32H7_RCC_APB3_DSI		4
+
+#define STM32H7_APB3_RESET(bit) (STM32H7_RCC_APB3_##bit + (0x8C * 8))
+
+/* APB1L */
+#define STM32H7_RCC_APB1L_TIM2		0
+#define STM32H7_RCC_APB1L_TIM3		1
+#define STM32H7_RCC_APB1L_TIM4		2
+#define STM32H7_RCC_APB1L_TIM5		3
+#define STM32H7_RCC_APB1L_TIM6		4
+#define STM32H7_RCC_APB1L_TIM7		5
+#define STM32H7_RCC_APB1L_TIM12		6
+#define STM32H7_RCC_APB1L_TIM13		7
+#define STM32H7_RCC_APB1L_TIM14		8
+#define STM32H7_RCC_APB1L_LPTIM1	9
+#define STM32H7_RCC_APB1L_SPI2		14
+#define STM32H7_RCC_APB1L_SPI3		15
+#define STM32H7_RCC_APB1L_SPDIF_RX	16
+#define STM32H7_RCC_APB1L_USART2	17
+#define STM32H7_RCC_APB1L_USART3	18
+#define STM32H7_RCC_APB1L_UART4		19
+#define STM32H7_RCC_APB1L_UART5		20
+#define STM32H7_RCC_APB1L_I2C1		21
+#define STM32H7_RCC_APB1L_I2C2		22
+#define STM32H7_RCC_APB1L_I2C3		23
+#define STM32H7_RCC_APB1L_HDMICEC	27
+#define STM32H7_RCC_APB1L_DAC12		29
+#define STM32H7_RCC_APB1L_USART7	30
+#define STM32H7_RCC_APB1L_USART8	31
+
+#define STM32H7_APB1L_RESET(bit) (STM32H7_RCC_APB1L_##bit + (0x90 * 8))
+
+/* APB1H */
+#define STM32H7_RCC_APB1H_CRS		1
+#define STM32H7_RCC_APB1H_SWP		2
+#define STM32H7_RCC_APB1H_OPAMP		4
+#define STM32H7_RCC_APB1H_MDIOS		5
+#define STM32H7_RCC_APB1H_FDCAN		8
+
+#define STM32H7_APB1H_RESET(bit) (STM32H7_RCC_APB1H_##bit + (0x94 * 8))
+
+/* APB2 */
+#define STM32H7_RCC_APB2_TIM1		0
+#define STM32H7_RCC_APB2_TIM8		1
+#define STM32H7_RCC_APB2_USART1		4
+#define STM32H7_RCC_APB2_USART6		5
+#define STM32H7_RCC_APB2_SPI1		12
+#define STM32H7_RCC_APB2_SPI4		13
+#define STM32H7_RCC_APB2_TIM15		16
+#define STM32H7_RCC_APB2_TIM16		17
+#define STM32H7_RCC_APB2_TIM17		18
+#define STM32H7_RCC_APB2_SPI5		20
+#define STM32H7_RCC_APB2_SAI1		22
+#define STM32H7_RCC_APB2_SAI2		23
+#define STM32H7_RCC_APB2_SAI3		24
+#define STM32H7_RCC_APB2_DFSDM1		28
+#define STM32H7_RCC_APB2_HRTIM		29
+
+#define STM32H7_APB2_RESET(bit) (STM32H7_RCC_APB2_##bit + (0x98 * 8))
+
+/* APB4 */
+#define STM32H7_RCC_APB4_SYSCFG		1
+#define STM32H7_RCC_APB4_LPUART1	3
+#define STM32H7_RCC_APB4_SPI6		5
+#define STM32H7_RCC_APB4_I2C4		7
+#define STM32H7_RCC_APB4_LPTIM2		9
+#define STM32H7_RCC_APB4_LPTIM3		10
+#define STM32H7_RCC_APB4_LPTIM4		11
+#define STM32H7_RCC_APB4_LPTIM5		12
+#define STM32H7_RCC_APB4_COMP12		14
+#define STM32H7_RCC_APB4_VREF		15
+#define STM32H7_RCC_APB4_SAI4		21
+#define STM32H7_RCC_APB4_TMPSENS	26
+
+#define STM32H7_APB4_RESET(bit) (STM32H7_RCC_APB4_##bit + (0x9C * 8))
+
+#endif /* _DT_BINDINGS_MFD_STM32H7_RCC_H */
-- 
1.9.1

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[gabriel.fernandez at st.com]

From: Gabriel Fernandez <gabriel.fernandez@st.com>

This patch enables clocks for STM32H743 boards.

Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

for MFD changes:
Acked-by: Lee Jones <lee.jones@linaro.org>

for DT-Bindings
Acked-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
 drivers/clk/Makefile                               |    1 +
 drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
 include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
 include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
 5 files changed, 1793 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
 create mode 100644 drivers/clk/clk-stm32h7.c
 create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
 create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h

diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
new file mode 100644
index 0000000..442c50c
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
@@ -0,0 +1,82 @@
+STMicroelectronics STM32H7 Reset and Clock Controller
+=====================================================
+
+The RCC IP is both a reset and a clock controller.
+
+Please refer to clock-bindings.txt for common clock controller binding usage.
+Please also refer to reset.txt for common reset controller binding usage.
+
+Required properties:
+- compatible: Should be:
+  "st,stm32h743-rcc"
+
+- reg: should be register base and length as documented in the
+  datasheet
+
+- #reset-cells: 1, see below
+
+- #clock-cells : from common clock binding; shall be set to 1
+
+- clocks: External oscillator clock phandle
+  - high speed external clock signal (HSE)
+  - low speed external clock signal (LSE)
+  - external I2S clock (I2S_CKIN)
+
+Optional properties:
+- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
+  write protection (RTC clock).
+
+Example:
+
+	rcc: rcc at 58024400 {
+		#reset-cells = <1>;
+		#clock-cells = <2>
+		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
+		reg = <0x58024400 0x400>;
+		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
+
+		st,syscfg = <&pwrcfg>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
+The peripheral clock consumer should specify the desired clock by
+having the clock ID in its "clocks" phandle cell.
+
+All available clocks are defined as preprocessor macros in
+dt-bindings/clock/stm32h7-clks.h header and can be used in device
+tree sources.
+
+Example:
+
+		timer5: timer at 40000c00 {
+			compatible = "st,stm32-timer";
+			reg = <0x40000c00 0x400>;
+			interrupts = <50>;
+			clocks = <&rcc TIM5_CK>;
+
+		};
+
+Specifying softreset control of devices
+=======================================
+
+Device nodes should specify the reset channel required in their "resets"
+property, containing a phandle to the reset device node and an index specifying
+which channel to use.
+The index is the bit number within the RCC registers bank, starting from RCC
+base address.
+It is calculated as: index = register_offset / 4 * 32 + bit_offset.
+Where bit_offset is the bit offset within the register.
+
+For example, for CRC reset:
+  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
+
+All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
+header and can be used in device tree sources.
+
+example:
+
+	timer2 {
+		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
+	};
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index cd376b3..e50c18c 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_COMMON_CLK_SI5351)		+= clk-si5351.o
 obj-$(CONFIG_COMMON_CLK_SI514)		+= clk-si514.o
 obj-$(CONFIG_COMMON_CLK_SI570)		+= clk-si570.o
 obj-$(CONFIG_ARCH_STM32)		+= clk-stm32f4.o
+obj-$(CONFIG_ARCH_STM32)		+= clk-stm32h7.o
 obj-$(CONFIG_ARCH_TANGO)		+= clk-tango4.o
 obj-$(CONFIG_CLK_TWL6040)		+= clk-twl6040.o
 obj-$(CONFIG_ARCH_U300)			+= clk-u300.o
diff --git a/drivers/clk/clk-stm32h7.c b/drivers/clk/clk-stm32h7.c
new file mode 100644
index 0000000..993b26c
--- /dev/null
+++ b/drivers/clk/clk-stm32h7.c
@@ -0,0 +1,1409 @@
+/*
+ * Copyright (C) Gabriel Fernandez 2017
+ * Author: Gabriel Fernandez <gabriel.fernandez@st.com>
+ *
+ * License terms: GPL V2.0.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/regmap.h>
+
+#include <dt-bindings/clock/stm32h7-clks.h>
+
+/* Reset Clock Control Registers */
+#define RCC_CR		0x00
+#define RCC_CFGR	0x10
+#define RCC_D1CFGR	0x18
+#define RCC_D2CFGR	0x1C
+#define RCC_D3CFGR	0x20
+#define RCC_PLLCKSELR	0x28
+#define RCC_PLLCFGR	0x2C
+#define RCC_PLL1DIVR	0x30
+#define RCC_PLL1FRACR	0x34
+#define RCC_PLL2DIVR	0x38
+#define RCC_PLL2FRACR	0x3C
+#define RCC_PLL3DIVR	0x40
+#define RCC_PLL3FRACR	0x44
+#define RCC_D1CCIPR	0x4C
+#define RCC_D2CCIP1R	0x50
+#define RCC_D2CCIP2R	0x54
+#define RCC_D3CCIPR	0x58
+#define RCC_BDCR	0x70
+#define RCC_CSR		0x74
+#define RCC_AHB3ENR	0xD4
+#define RCC_AHB1ENR	0xD8
+#define RCC_AHB2ENR	0xDC
+#define RCC_AHB4ENR	0xE0
+#define RCC_APB3ENR	0xE4
+#define RCC_APB1LENR	0xE8
+#define RCC_APB1HENR	0xEC
+#define RCC_APB2ENR	0xF0
+#define RCC_APB4ENR	0xF4
+
+static DEFINE_SPINLOCK(stm32rcc_lock);
+
+static void __iomem *base;
+static struct clk_hw **hws;
+
+/* System clock parent */
+static const char * const sys_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "pll1_p" };
+
+static const char * const tracein_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "pll1_r" };
+
+static const char * const per_src[] = {
+	"hsi_ker", "csi_ker", "hse_ck", "disabled" };
+
+static const char * const pll_src[] = {
+	"hsi_ck", "csi_ck", "hse_ck", "no clock" };
+
+static const char * const sdmmc_src[] = { "pll1_q", "pll2_r" };
+
+static const char * const dsi_src[] = { "ck_dsi_phy", "pll2_q" };
+
+static const char * const qspi_src[] = {
+	"hclk", "pll1_q", "pll2_r", "per_ck" };
+
+static const char * const fmc_src[] = {
+	"hclk", "pll1_q", "pll2_r", "per_ck" };
+
+/* Kernel clock parent */
+static const char * const swp_src[] = {	"pclk1", "hsi_ker" };
+
+static const char * const fdcan_src[] = { "hse_ck", "pll1_q", "pll2_q" };
+
+static const char * const dfsdm1_src[] = { "pclk2", "sys_ck" };
+
+static const char * const spdifrx_src[] = {
+	"pll1_q", "pll2_r", "pll3_r", "hsi_ker" };
+
+static const char *spi_src1[5] = {
+	"pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const spi_src2[] = {
+	"pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const spi_src3[] = {
+	"pclk4", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "hse_ck" };
+
+static const char * const lptim_src1[] = {
+	"pclk1", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const lptim_src2[] = {
+	"pclk4", "pll2_p", "pll3_r", "lse_ck", "lsi_ck", "per_ck" };
+
+static const char * const cec_src[] = {"lse_ck", "lsi_ck", "csi_ker_div122" };
+
+static const char * const usbotg_src[] = {"pll1_q", "pll3_q", "rc48_ck" };
+
+/* i2c 1,2,3 src */
+static const char * const i2c_src1[] = {
+	"pclk1", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const i2c_src2[] = {
+	"pclk4", "pll3_r", "hsi_ker", "csi_ker" };
+
+static const char * const rng_src[] = {
+	"rc48_ck", "pll1_q", "lse_ck", "lsi_ck" };
+
+/* usart 1,6 src */
+static const char * const usart_src1[] = {
+	"pclk2", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+/* usart 2,3,4,5,7,8 src */
+static const char * const usart_src2[] = {
+	"pclk1", "pll2_q", "pll3_q", "hsi_ker", "csi_ker", "lse_ck" };
+
+static const char *sai_src[5] = {
+	"pll1_q", "pll2_p", "pll3_p", NULL, "per_ck" };
+
+static const char * const adc_src[] = { "pll2_p", "pll3_r", "per_ck" };
+
+/* lptim 2,3,4,5 src */
+static const char * const lpuart1_src[] = {
+	"pclk3", "pll2_q", "pll3_q", "csi_ker", "lse_ck" };
+
+static const char * const hrtim_src[] = { "tim2_ker", "d1cpre" };
+
+/* RTC clock parent */
+static const char * const rtc_src[] = { "off", "lse_ck", "lsi_ck", "hse_1M" };
+
+/* Micro-controller output clock parent */
+static const char * const mco_src1[] = {
+	"hsi_ck", "lse_ck", "hse_ck", "pll1_q",	"rc48_ck" };
+
+static const char * const mco_src2[] = {
+	"sys_ck", "pll2_p", "hse_ck", "pll1_p", "csi_ck", "lsi_ck" };
+
+/* LCD clock */
+static const char * const ltdc_src[] = {"pll3_r"};
+
+/* Gate clock with ready bit and backup domain management */
+struct stm32_ready_gate {
+	struct	clk_gate gate;
+	u8	bit_rdy;
+};
+
+#define to_ready_gate_clk(_rgate) container_of(_rgate, struct stm32_ready_gate,\
+		gate)
+
+#define RGATE_TIMEOUT 10000
+
+static int ready_gate_clk_enable(struct clk_hw *hw)
+{
+	struct clk_gate *gate = to_clk_gate(hw);
+	struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+	int bit_status;
+	unsigned int timeout = RGATE_TIMEOUT;
+
+	if (clk_gate_ops.is_enabled(hw))
+		return 0;
+
+	clk_gate_ops.enable(hw);
+
+	/* We can't use readl_poll_timeout() because we can blocked if
+	 * someone enables this clock before clocksource changes.
+	 * Only jiffies counter is available. Jiffies are incremented by
+	 * interruptions and enable op does not allow to be interrupted.
+	 */
+	do {
+		bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+		if (bit_status)
+			udelay(100);
+
+	} while (bit_status && --timeout);
+
+	return bit_status;
+}
+
+static void ready_gate_clk_disable(struct clk_hw *hw)
+{
+	struct clk_gate *gate = to_clk_gate(hw);
+	struct stm32_ready_gate *rgate = to_ready_gate_clk(gate);
+	int bit_status;
+	unsigned int timeout = RGATE_TIMEOUT;
+
+	if (!clk_gate_ops.is_enabled(hw))
+		return;
+
+	clk_gate_ops.disable(hw);
+
+	do {
+		bit_status = !!(readl(gate->reg) & BIT(rgate->bit_rdy));
+
+		if (bit_status)
+			udelay(100);
+
+	} while (bit_status && --timeout);
+}
+
+static const struct clk_ops ready_gate_clk_ops = {
+	.enable		= ready_gate_clk_enable,
+	.disable	= ready_gate_clk_disable,
+	.is_enabled	= clk_gate_is_enabled,
+};
+
+static struct clk_hw *clk_register_ready_gate(struct device *dev,
+		const char *name, const char *parent_name,
+		void __iomem *reg, u8 bit_idx, u8 bit_rdy,
+		unsigned long flags, spinlock_t *lock)
+{
+	struct stm32_ready_gate *rgate;
+	struct clk_init_data init = { NULL };
+	struct clk_hw *hw;
+	int ret;
+
+	rgate = kzalloc(sizeof(*rgate), GFP_KERNEL);
+	if (!rgate)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &ready_gate_clk_ops;
+	init.flags = flags;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	rgate->bit_rdy = bit_rdy;
+	rgate->gate.lock = lock;
+	rgate->gate.reg = reg;
+	rgate->gate.bit_idx = bit_idx;
+	rgate->gate.hw.init = &init;
+
+	hw = &rgate->gate.hw;
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(rgate);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+struct gate_cfg {
+	u32 offset;
+	u8  bit_idx;
+};
+
+struct muxdiv_cfg {
+	u32 offset;
+	u8 shift;
+	u8 width;
+};
+
+struct composite_clk_cfg {
+	struct gate_cfg *gate;
+	struct muxdiv_cfg *mux;
+	struct muxdiv_cfg *div;
+	const char *name;
+	const char * const *parent_name;
+	int num_parents;
+	u32 flags;
+};
+
+struct composite_clk_gcfg_t {
+	u8 flags;
+	const struct clk_ops *ops;
+};
+
+/*
+ * General config definition of a composite clock (only clock diviser for rate)
+ */
+struct composite_clk_gcfg {
+	struct composite_clk_gcfg_t *mux;
+	struct composite_clk_gcfg_t *div;
+	struct composite_clk_gcfg_t *gate;
+};
+
+#define M_CFG_MUX(_mux_ops, _mux_flags)\
+	.mux = &(struct composite_clk_gcfg_t) { _mux_flags, _mux_ops}
+
+#define M_CFG_DIV(_rate_ops, _rate_flags)\
+	.div = &(struct composite_clk_gcfg_t) {_rate_flags, _rate_ops}
+
+#define M_CFG_GATE(_gate_ops, _gate_flags)\
+	.gate = &(struct composite_clk_gcfg_t) { _gate_flags, _gate_ops}
+
+static struct clk_mux *_get_cmux(void __iomem *reg, u8 shift, u8 width,
+		u32 flags, spinlock_t *lock)
+{
+	struct clk_mux *mux;
+
+	mux = kzalloc(sizeof(*mux), GFP_KERNEL);
+	if (!mux)
+		return ERR_PTR(-ENOMEM);
+
+	mux->reg	= reg;
+	mux->shift	= shift;
+	mux->mask	= (1 << width) - 1;
+	mux->flags	= flags;
+	mux->lock	= lock;
+
+	return mux;
+}
+
+static struct clk_divider *_get_cdiv(void __iomem *reg, u8 shift, u8 width,
+		u32 flags, spinlock_t *lock)
+{
+	struct clk_divider *div;
+
+	div = kzalloc(sizeof(*div), GFP_KERNEL);
+
+	if (!div)
+		return ERR_PTR(-ENOMEM);
+
+	div->reg   = reg;
+	div->shift = shift;
+	div->width = width;
+	div->flags = flags;
+	div->lock  = lock;
+
+	return div;
+}
+
+static struct clk_gate *_get_cgate(void __iomem *reg, u8 bit_idx, u32 flags,
+		spinlock_t *lock)
+{
+	struct clk_gate *gate;
+
+	gate = kzalloc(sizeof(*gate), GFP_KERNEL);
+	if (!gate)
+		return ERR_PTR(-ENOMEM);
+
+	gate->reg	= reg;
+	gate->bit_idx	= bit_idx;
+	gate->flags	= flags;
+	gate->lock	= lock;
+
+	return gate;
+}
+
+struct composite_cfg {
+	struct clk_hw *mux_hw;
+	struct clk_hw *div_hw;
+	struct clk_hw *gate_hw;
+
+	const struct clk_ops *mux_ops;
+	const struct clk_ops *div_ops;
+	const struct clk_ops *gate_ops;
+};
+
+static void get_cfg_composite_div(const struct composite_clk_gcfg *gcfg,
+		const struct composite_clk_cfg *cfg,
+		struct composite_cfg *composite, spinlock_t *lock)
+{
+	struct clk_mux     *mux = NULL;
+	struct clk_divider *div = NULL;
+	struct clk_gate    *gate = NULL;
+	const struct clk_ops *mux_ops, *div_ops, *gate_ops;
+	struct clk_hw *mux_hw;
+	struct clk_hw *div_hw;
+	struct clk_hw *gate_hw;
+
+	mux_ops = div_ops = gate_ops = NULL;
+	mux_hw = div_hw = gate_hw = NULL;
+
+	if (gcfg->mux && gcfg->mux) {
+		mux = _get_cmux(base + cfg->mux->offset,
+				cfg->mux->shift,
+				cfg->mux->width,
+				gcfg->mux->flags, lock);
+
+		if (!IS_ERR(mux)) {
+			mux_hw = &mux->hw;
+			mux_ops = gcfg->mux->ops ?
+				  gcfg->mux->ops : &clk_mux_ops;
+		}
+	}
+
+	if (gcfg->div && cfg->div) {
+		div = _get_cdiv(base + cfg->div->offset,
+				cfg->div->shift,
+				cfg->div->width,
+				gcfg->div->flags, lock);
+
+		if (!IS_ERR(div)) {
+			div_hw = &div->hw;
+			div_ops = gcfg->div->ops ?
+				  gcfg->div->ops : &clk_divider_ops;
+		}
+	}
+
+	if (gcfg->gate && gcfg->gate) {
+		gate = _get_cgate(base + cfg->gate->offset,
+				cfg->gate->bit_idx,
+				gcfg->gate->flags, lock);
+
+		if (!IS_ERR(gate)) {
+			gate_hw = &gate->hw;
+			gate_ops = gcfg->gate->ops ?
+				   gcfg->gate->ops : &clk_gate_ops;
+		}
+	}
+
+	composite->mux_hw = mux_hw;
+	composite->mux_ops = mux_ops;
+
+	composite->div_hw = div_hw;
+	composite->div_ops = div_ops;
+
+	composite->gate_hw = gate_hw;
+	composite->gate_ops = gate_ops;
+}
+
+/* Kernel Timer */
+struct timer_ker {
+	u8 dppre_shift;
+	struct clk_hw hw;
+	spinlock_t *lock;
+};
+
+#define to_timer_ker(_hw) container_of(_hw, struct timer_ker, hw)
+
+static unsigned long timer_ker_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct timer_ker *clk_elem = to_timer_ker(hw);
+	u32 timpre;
+	u32 dppre_shift = clk_elem->dppre_shift;
+	u32 prescaler;
+	u32 mul;
+
+	timpre = (readl(base + RCC_CFGR) >> 15) & 0x01;
+
+	prescaler = (readl(base + RCC_D2CFGR) >> dppre_shift) & 0x03;
+
+	mul = 2;
+
+	if (prescaler < 4)
+		mul = 1;
+
+	else if (timpre && prescaler > 4)
+		mul = 4;
+
+	return parent_rate * mul;
+}
+
+static const struct clk_ops timer_ker_ops = {
+	.recalc_rate = timer_ker_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_timer_ker(struct device *dev,
+		const char *name, const char *parent_name,
+		unsigned long flags,
+		u8 dppre_shift,
+		spinlock_t *lock)
+{
+	struct timer_ker *element;
+	struct clk_init_data init;
+	struct clk_hw *hw;
+	int err;
+
+	element = kzalloc(sizeof(*element), GFP_KERNEL);
+	if (!element)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &timer_ker_ops;
+	init.flags = flags;
+	init.parent_names = &parent_name;
+	init.num_parents = 1;
+
+	element->hw.init = &init;
+	element->lock = lock;
+	element->dppre_shift = dppre_shift;
+
+	hw = &element->hw;
+	err = clk_hw_register(dev, hw);
+
+	if (err) {
+		kfree(element);
+		return ERR_PTR(err);
+	}
+
+	return hw;
+}
+
+static const struct clk_div_table d1cpre_div_table[] = {
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+	{ 4, 1 }, { 5, 1 }, { 6, 1 }, { 7, 1},
+	{ 8, 2 }, { 9, 4 }, { 10, 8 }, { 11, 16 },
+	{ 12, 64 }, { 13, 128 }, { 14, 256 },
+	{ 15, 512 },
+	{ 0 },
+};
+
+static const struct clk_div_table ppre_div_table[] = {
+	{ 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1},
+	{ 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 },
+	{ 0 },
+};
+
+static void register_core_and_bus_clocks(void)
+{
+	/* CORE AND BUS */
+	hws[SYS_D1CPRE] = clk_hw_register_divider_table(NULL, "d1cpre",
+			"sys_ck", CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 8, 4, 0,
+			d1cpre_div_table, &stm32rcc_lock);
+
+	hws[HCLK] = clk_hw_register_divider_table(NULL, "hclk", "d1cpre",
+			CLK_IGNORE_UNUSED, base + RCC_D1CFGR, 0, 4, 0,
+			d1cpre_div_table, &stm32rcc_lock);
+
+	/* D1 DOMAIN */
+	/* * CPU Systick */
+	hws[CPU_SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick",
+			"d1cpre", 0, 1, 8);
+
+	/* * APB3 peripheral */
+	hws[PCLK3] = clk_hw_register_divider_table(NULL, "pclk3", "hclk", 0,
+			base + RCC_D1CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+
+	/* D2 DOMAIN */
+	/* * APB1 peripheral */
+	hws[PCLK1] = clk_hw_register_divider_table(NULL, "pclk1", "hclk", 0,
+			base + RCC_D2CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+
+	/* Timers prescaler clocks */
+	clk_register_stm32_timer_ker(NULL, "tim1_ker", "pclk1", 0,
+			4, &stm32rcc_lock);
+
+	/* * APB2 peripheral */
+	hws[PCLK2] = clk_hw_register_divider_table(NULL, "pclk2", "hclk", 0,
+			base + RCC_D2CFGR, 8, 3, 0, ppre_div_table,
+			&stm32rcc_lock);
+
+	clk_register_stm32_timer_ker(NULL, "tim2_ker", "pclk2", 0, 8,
+			&stm32rcc_lock);
+
+	/* D3 DOMAIN */
+	/* * APB4 peripheral */
+	hws[PCLK4] = clk_hw_register_divider_table(NULL, "pclk4", "hclk", 0,
+			base + RCC_D3CFGR, 4, 3, 0,
+			ppre_div_table, &stm32rcc_lock);
+}
+
+/* MUX clock configuration */
+struct stm32_mux_clk {
+	const char *name;
+	const char * const *parents;
+	u8 num_parents;
+	u32 offset;
+	u8 shift;
+	u8 width;
+	u32 flags;
+};
+
+#define M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, _flags)\
+{\
+	.name		= _name,\
+	.parents	= _parents,\
+	.num_parents	= ARRAY_SIZE(_parents),\
+	.offset		= _mux_offset,\
+	.shift		= _mux_shift,\
+	.width		= _mux_width,\
+	.flags		= _flags,\
+}
+
+#define M_MCLOC(_name, _parents, _mux_offset, _mux_shift, _mux_width)\
+	M_MCLOCF(_name, _parents, _mux_offset, _mux_shift, _mux_width, 0)\
+
+static const struct stm32_mux_clk stm32_mclk[] __initconst = {
+	M_MCLOC("per_ck",	per_src,	RCC_D1CCIPR,	28, 3),
+	M_MCLOC("pllsrc",	pll_src,	RCC_PLLCKSELR,	 0, 3),
+	M_MCLOC("sys_ck",	sys_src,	RCC_CFGR,	 0, 3),
+	M_MCLOC("tracein_ck",	tracein_src,	RCC_CFGR,	 0, 3),
+};
+
+/* Oscillary clock configuration */
+struct stm32_osc_clk {
+	const char *name;
+	const char *parent;
+	u32 gate_offset;
+	u8 bit_idx;
+	u8 bit_rdy;
+	u32 flags;
+};
+
+#define OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, _flags)\
+{\
+	.name		= _name,\
+	.parent		= _parent,\
+	.gate_offset	= _gate_offset,\
+	.bit_idx	= _bit_idx,\
+	.bit_rdy	= _bit_rdy,\
+	.flags		= _flags,\
+}
+
+#define OSC_CLK(_name, _parent, _gate_offset, _bit_idx, _bit_rdy)\
+	OSC_CLKF(_name, _parent, _gate_offset, _bit_idx, _bit_rdy, 0)
+
+static const struct stm32_osc_clk stm32_oclk[] __initconst = {
+	OSC_CLKF("hsi_ck",  "hsidiv",   RCC_CR,   0,  2, CLK_IGNORE_UNUSED),
+	OSC_CLKF("hsi_ker", "hsidiv",   RCC_CR,   1,  2, CLK_IGNORE_UNUSED),
+	OSC_CLKF("csi_ck",  "clk-csi",  RCC_CR,   7,  8, CLK_IGNORE_UNUSED),
+	OSC_CLKF("csi_ker", "clk-csi",  RCC_CR,   9,  8, CLK_IGNORE_UNUSED),
+	OSC_CLKF("rc48_ck", "clk-rc48", RCC_CR,  12, 13, CLK_IGNORE_UNUSED),
+	OSC_CLKF("lsi_ck",  "clk-lsi",  RCC_CSR,  0,  1, CLK_IGNORE_UNUSED),
+};
+
+/* PLL configuration */
+struct st32h7_pll_cfg {
+	u8 bit_idx;
+	u32 offset_divr;
+	u8 bit_frac_en;
+	u32 offset_frac;
+	u8 divm;
+};
+
+struct stm32_pll_data {
+	const char *name;
+	const char *parent_name;
+	unsigned long flags;
+	const struct st32h7_pll_cfg *cfg;
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll1 = {
+	.bit_idx = 24,
+	.offset_divr = RCC_PLL1DIVR,
+	.bit_frac_en = 0,
+	.offset_frac = RCC_PLL1FRACR,
+	.divm = 4,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll2 = {
+	.bit_idx = 26,
+	.offset_divr = RCC_PLL2DIVR,
+	.bit_frac_en = 4,
+	.offset_frac = RCC_PLL2FRACR,
+	.divm = 12,
+};
+
+static const struct st32h7_pll_cfg stm32h7_pll3 = {
+	.bit_idx = 28,
+	.offset_divr = RCC_PLL3DIVR,
+	.bit_frac_en = 8,
+	.offset_frac = RCC_PLL3FRACR,
+	.divm = 20,
+};
+
+static const struct stm32_pll_data stm32_pll[] = {
+	{ "vco1", "pllsrc", CLK_IGNORE_UNUSED, &stm32h7_pll1 },
+	{ "vco2", "pllsrc", 0, &stm32h7_pll2 },
+	{ "vco3", "pllsrc", 0, &stm32h7_pll3 },
+};
+
+struct stm32_fractional_divider {
+	void __iomem	*mreg;
+	u8		mshift;
+	u8		mwidth;
+	u32		mmask;
+
+	void __iomem	*nreg;
+	u8		nshift;
+	u8		nwidth;
+
+	void __iomem	*freg_status;
+	u8		freg_bit;
+	void __iomem	*freg_value;
+	u8		fshift;
+	u8		fwidth;
+
+	u8		flags;
+	struct clk_hw	hw;
+	spinlock_t	*lock;
+};
+
+struct stm32_pll_obj {
+	spinlock_t *lock;
+	struct stm32_fractional_divider div;
+	struct stm32_ready_gate rgate;
+	struct clk_hw hw;
+};
+
+#define to_pll(_hw) container_of(_hw, struct stm32_pll_obj, hw)
+
+static int pll_is_enabled(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	return ready_gate_clk_ops.is_enabled(_hw);
+}
+
+static int pll_enable(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	return ready_gate_clk_ops.enable(_hw);
+}
+
+static void pll_disable(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct clk_hw *_hw = &clk_elem->rgate.gate.hw;
+
+	__clk_hw_set_clk(_hw, hw);
+
+	ready_gate_clk_ops.disable(_hw);
+}
+
+static int pll_frac_is_enabled(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+
+	return (readl(fd->freg_status) >> fd->freg_bit) & 0x01;
+}
+
+static unsigned long pll_read_frac(struct clk_hw *hw)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+
+	return (readl(fd->freg_value) >> fd->fshift) &
+		GENMASK(fd->fwidth - 1, 0);
+}
+
+static unsigned long pll_fd_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	struct stm32_pll_obj *clk_elem = to_pll(hw);
+	struct stm32_fractional_divider *fd = &clk_elem->div;
+	unsigned long m, n;
+	u32 val, mask;
+	u64 rate, rate1 = 0;
+
+	val = readl(fd->mreg);
+	mask = GENMASK(fd->mwidth - 1, 0) << fd->mshift;
+	m = (val & mask) >> fd->mshift;
+
+	val = readl(fd->nreg);
+	mask = GENMASK(fd->nwidth - 1, 0) << fd->nshift;
+	n = ((val & mask) >> fd->nshift) + 1;
+
+	if (!n || !m)
+		return parent_rate;
+
+	rate = (u64)parent_rate * n;
+	do_div(rate, m);
+
+	if (pll_frac_is_enabled(hw)) {
+		val = pll_read_frac(hw);
+		rate1 = (u64)parent_rate * (u64)val;
+		do_div(rate1, (m * 8191));
+	}
+
+	return rate + rate1;
+}
+
+static const struct clk_ops pll_ops = {
+	.enable		= pll_enable,
+	.disable	= pll_disable,
+	.is_enabled	= pll_is_enabled,
+	.recalc_rate	= pll_fd_recalc_rate,
+};
+
+static struct clk_hw *clk_register_stm32_pll(struct device *dev,
+		const char *name,
+		const char *parent,
+		unsigned long flags,
+		const struct st32h7_pll_cfg *cfg,
+		spinlock_t *lock)
+{
+	struct stm32_pll_obj *pll;
+	struct clk_init_data init = { NULL };
+	struct clk_hw *hw;
+	int ret;
+	struct stm32_fractional_divider *div = NULL;
+	struct stm32_ready_gate *rgate;
+
+	pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+	if (!pll)
+		return ERR_PTR(-ENOMEM);
+
+	init.name = name;
+	init.ops = &pll_ops;
+	init.flags = flags;
+	init.parent_names = &parent;
+	init.num_parents = 1;
+	pll->hw.init = &init;
+
+	hw = &pll->hw;
+	rgate = &pll->rgate;
+
+	rgate->bit_rdy = cfg->bit_idx + 1;
+	rgate->gate.lock = lock;
+	rgate->gate.reg = base + RCC_CR;
+	rgate->gate.bit_idx = cfg->bit_idx;
+
+	div = &pll->div;
+	div->flags = 0;
+	div->mreg = base + RCC_PLLCKSELR;
+	div->mshift = cfg->divm;
+	div->mwidth = 6;
+	div->nreg = base +  cfg->offset_divr;
+	div->nshift = 0;
+	div->nwidth = 9;
+
+	div->freg_status = base + RCC_PLLCFGR;
+	div->freg_bit = cfg->bit_frac_en;
+	div->freg_value = base +  cfg->offset_frac;
+	div->fshift = 3;
+	div->fwidth = 13;
+
+	div->lock = lock;
+
+	ret = clk_hw_register(dev, hw);
+	if (ret) {
+		kfree(pll);
+		hw = ERR_PTR(ret);
+	}
+
+	return hw;
+}
+
+/* ODF CLOCKS */
+static unsigned long odf_divider_recalc_rate(struct clk_hw *hw,
+		unsigned long parent_rate)
+{
+	return clk_divider_ops.recalc_rate(hw, parent_rate);
+}
+
+static long odf_divider_round_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long *prate)
+{
+	return clk_divider_ops.round_rate(hw, rate, prate);
+}
+
+static int odf_divider_set_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long parent_rate)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+	int ret;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
+
+	if (pll_status)
+		pll_enable(hwp);
+
+	return ret;
+}
+
+static const struct clk_ops odf_divider_ops = {
+	.recalc_rate	= odf_divider_recalc_rate,
+	.round_rate	= odf_divider_round_rate,
+	.set_rate	= odf_divider_set_rate,
+};
+
+static int odf_gate_enable(struct clk_hw *hw)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+	int ret;
+
+	if (clk_gate_ops.is_enabled(hw))
+		return 0;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	ret = clk_gate_ops.enable(hw);
+
+	if (pll_status)
+		pll_enable(hwp);
+
+	return ret;
+}
+
+static void odf_gate_disable(struct clk_hw *hw)
+{
+	struct clk_hw *hwp;
+	int pll_status;
+
+	if (!clk_gate_ops.is_enabled(hw))
+		return;
+
+	hwp = clk_hw_get_parent(hw);
+
+	pll_status = pll_is_enabled(hwp);
+
+	if (pll_status)
+		pll_disable(hwp);
+
+	clk_gate_ops.disable(hw);
+
+	if (pll_status)
+		pll_enable(hwp);
+}
+
+static const struct clk_ops odf_gate_ops = {
+	.enable		= odf_gate_enable,
+	.disable	= odf_gate_disable,
+	.is_enabled	= clk_gate_is_enabled,
+};
+
+static struct composite_clk_gcfg odf_clk_gcfg = {
+	M_CFG_DIV(&odf_divider_ops, 0),
+	M_CFG_GATE(&odf_gate_ops, 0),
+};
+
+#define M_ODF_F(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width, _flags)\
+{\
+	.mux = NULL,\
+	.div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx },\
+	.name = _name,\
+	.parent_name = &(const char *) {_parent},\
+	.num_parents = 1,\
+	.flags = _flags,\
+}
+
+#define M_ODF(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width)\
+M_ODF_F(_name, _parent, _gate_offset,  _bit_idx, _rate_offset,\
+		_rate_shift, _rate_width, 0)\
+
+static const struct composite_clk_cfg stm32_odf[3][3] = {
+	{
+		M_ODF_F("pll1_p", "vco1", RCC_PLLCFGR, 16, RCC_PLL1DIVR,  9, 7,
+				CLK_IGNORE_UNUSED),
+		M_ODF_F("pll1_q", "vco1", RCC_PLLCFGR, 17, RCC_PLL1DIVR, 16, 7,
+				CLK_IGNORE_UNUSED),
+		M_ODF_F("pll1_r", "vco1", RCC_PLLCFGR, 18, RCC_PLL1DIVR, 24, 7,
+				CLK_IGNORE_UNUSED),
+	},
+
+	{
+		M_ODF("pll2_p", "vco2", RCC_PLLCFGR, 19, RCC_PLL2DIVR,  9, 7),
+		M_ODF("pll2_q", "vco2", RCC_PLLCFGR, 20, RCC_PLL2DIVR, 16, 7),
+		M_ODF("pll2_r", "vco2", RCC_PLLCFGR, 21, RCC_PLL2DIVR, 24, 7),
+	},
+	{
+		M_ODF("pll3_p", "vco3", RCC_PLLCFGR, 22, RCC_PLL3DIVR,  9, 7),
+		M_ODF("pll3_q", "vco3", RCC_PLLCFGR, 23, RCC_PLL3DIVR, 16, 7),
+		M_ODF("pll3_r", "vco3", RCC_PLLCFGR, 24, RCC_PLL3DIVR, 24, 7),
+	}
+};
+
+/* PERIF CLOCKS */
+struct pclk_t {
+	u32 gate_offset;
+	u8 bit_idx;
+	const char *name;
+	const char *parent;
+	u32 flags;
+};
+
+#define PER_CLKF(_gate_offset, _bit_idx, _name, _parent, _flags)\
+{\
+	.gate_offset	= _gate_offset,\
+	.bit_idx	= _bit_idx,\
+	.name		= _name,\
+	.parent		= _parent,\
+	.flags		= _flags,\
+}
+
+#define PER_CLK(_gate_offset, _bit_idx, _name, _parent)\
+	PER_CLKF(_gate_offset, _bit_idx, _name, _parent, 0)
+
+static const struct pclk_t pclk[] = {
+	PER_CLK(RCC_AHB3ENR, 31, "d1sram1", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 30, "itcm", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 29, "dtcm2", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 28, "dtcm1", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 8, "flitf", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 5, "jpgdec", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 4, "dma2d", "hclk"),
+	PER_CLK(RCC_AHB3ENR, 0, "mdma", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 28, "usb2ulpi", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 26, "usb1ulpi", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 17, "eth1rx", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 16, "eth1tx", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 15, "eth1mac", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 14, "art", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 1, "dma2", "hclk"),
+	PER_CLK(RCC_AHB1ENR, 0, "dma1", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 31, "d2sram3", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 30, "d2sram2", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 29, "d2sram1", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 5, "hash", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 4, "crypt", "hclk"),
+	PER_CLK(RCC_AHB2ENR, 0, "camitf", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 28, "bkpram", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 25, "hsem", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 21, "bdma", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 19, "crc", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 10, "gpiok", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 9, "gpioj", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 8, "gpioi", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 7, "gpioh", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 6, "gpiog", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 5, "gpiof", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 4, "gpioe", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 3, "gpiod", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 2, "gpioc", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 1, "gpiob", "hclk"),
+	PER_CLK(RCC_AHB4ENR, 0, "gpioa", "hclk"),
+	PER_CLK(RCC_APB3ENR, 6, "wwdg1", "pclk3"),
+	PER_CLK(RCC_APB1LENR, 29, "dac12", "pclk1"),
+	PER_CLK(RCC_APB1LENR, 11, "wwdg2", "pclk1"),
+	PER_CLK(RCC_APB1LENR, 8, "tim14", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 7, "tim13", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 6, "tim12", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 5, "tim7", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 4, "tim6", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 3, "tim5", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 2, "tim4", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 1, "tim3", "tim1_ker"),
+	PER_CLK(RCC_APB1LENR, 0, "tim2", "tim1_ker"),
+	PER_CLK(RCC_APB1HENR, 5, "mdios", "pclk1"),
+	PER_CLK(RCC_APB1HENR, 4, "opamp", "pclk1"),
+	PER_CLK(RCC_APB1HENR, 1, "crs", "pclk1"),
+	PER_CLK(RCC_APB2ENR, 18, "tim17", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 17, "tim16", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 16, "tim15", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 1, "tim8", "tim2_ker"),
+	PER_CLK(RCC_APB2ENR, 0, "tim1", "tim2_ker"),
+	PER_CLK(RCC_APB4ENR, 26, "tmpsens", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 16, "rtcapb", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 15, "vref", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 14, "comp12", "pclk4"),
+	PER_CLK(RCC_APB4ENR, 1, "syscfg", "pclk4"),
+};
+
+/* KERNEL CLOCKS */
+#define KER_CLKF(_gate_offset, _bit_idx,\
+		_mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name,\
+		_flags) \
+{ \
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+	.mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+	.name = _name, \
+	.parent_name = _parent_name, \
+	.num_parents = ARRAY_SIZE(_parent_name),\
+	.flags = _flags,\
+}
+
+#define KER_CLK(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name) \
+KER_CLKF(_gate_offset, _bit_idx, _mux_offset, _mux_shift, _mux_width,\
+		_name, _parent_name, 0)\
+
+#define KER_CLKF_NOMUX(_gate_offset, _bit_idx,\
+		_name, _parent_name,\
+		_flags) \
+{ \
+	.gate = &(struct gate_cfg) {_gate_offset, _bit_idx},\
+	.mux = NULL,\
+	.name = _name, \
+	.parent_name = _parent_name, \
+	.num_parents = 1,\
+	.flags = _flags,\
+}
+
+static const struct composite_clk_cfg kclk[] = {
+	KER_CLK(RCC_AHB3ENR,  16, RCC_D1CCIPR,	16, 1, "sdmmc1", sdmmc_src),
+	KER_CLKF(RCC_AHB3ENR, 14, RCC_D1CCIPR,	 4, 2, "quadspi", qspi_src,
+			CLK_IGNORE_UNUSED),
+	KER_CLKF(RCC_AHB3ENR, 12, RCC_D1CCIPR,	 0, 2, "fmc", fmc_src,
+			CLK_IGNORE_UNUSED),
+	KER_CLK(RCC_AHB1ENR,  27, RCC_D2CCIP2R,	20, 2, "usb2otg", usbotg_src),
+	KER_CLK(RCC_AHB1ENR,  25, RCC_D2CCIP2R, 20, 2, "usb1otg", usbotg_src),
+	KER_CLK(RCC_AHB1ENR,   5, RCC_D3CCIPR,	16, 2, "adc12", adc_src),
+	KER_CLK(RCC_AHB2ENR,   9, RCC_D1CCIPR,	16, 1, "sdmmc2", sdmmc_src),
+	KER_CLK(RCC_AHB2ENR,   6, RCC_D2CCIP2R,	 8, 2, "rng", rng_src),
+	KER_CLK(RCC_AHB4ENR,  24, RCC_D3CCIPR,  16, 2, "adc3", adc_src),
+	KER_CLKF(RCC_APB3ENR,   4, RCC_D1CCIPR,	 8, 1, "dsi", dsi_src,
+			CLK_SET_RATE_PARENT),
+	KER_CLKF_NOMUX(RCC_APB3ENR, 3, "ltdc", ltdc_src, CLK_SET_RATE_PARENT),
+	KER_CLK(RCC_APB1LENR, 31, RCC_D2CCIP2R,  0, 3, "usart8", usart_src2),
+	KER_CLK(RCC_APB1LENR, 30, RCC_D2CCIP2R,  0, 3, "usart7", usart_src2),
+	KER_CLK(RCC_APB1LENR, 27, RCC_D2CCIP2R, 22, 2, "hdmicec", cec_src),
+	KER_CLK(RCC_APB1LENR, 23, RCC_D2CCIP2R, 12, 2, "i2c3", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 22, RCC_D2CCIP2R, 12, 2, "i2c2", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 21, RCC_D2CCIP2R, 12, 2, "i2c1", i2c_src1),
+	KER_CLK(RCC_APB1LENR, 20, RCC_D2CCIP2R,	 0, 3, "uart5", usart_src2),
+	KER_CLK(RCC_APB1LENR, 19, RCC_D2CCIP2R,  0, 3, "uart4", usart_src2),
+	KER_CLK(RCC_APB1LENR, 18, RCC_D2CCIP2R,  0, 3, "usart3", usart_src2),
+	KER_CLK(RCC_APB1LENR, 17, RCC_D2CCIP2R,  0, 3, "usart2", usart_src2),
+	KER_CLK(RCC_APB1LENR, 16, RCC_D2CCIP1R, 20, 2, "spdifrx", spdifrx_src),
+	KER_CLK(RCC_APB1LENR, 15, RCC_D2CCIP1R, 16, 3, "spi3", spi_src1),
+	KER_CLK(RCC_APB1LENR, 14, RCC_D2CCIP1R, 16, 3, "spi2", spi_src1),
+	KER_CLK(RCC_APB1LENR,  9, RCC_D2CCIP2R, 28, 3, "lptim1", lptim_src1),
+	KER_CLK(RCC_APB1HENR,  8, RCC_D2CCIP1R, 28, 2, "fdcan", fdcan_src),
+	KER_CLK(RCC_APB1HENR,  2, RCC_D2CCIP1R, 31, 1, "swp", swp_src),
+	KER_CLK(RCC_APB2ENR,  29, RCC_CFGR,	14, 1, "hrtim", hrtim_src),
+	KER_CLK(RCC_APB2ENR,  28, RCC_D2CCIP1R, 24, 1, "dfsdm1", dfsdm1_src),
+	KER_CLKF(RCC_APB2ENR,  24, RCC_D2CCIP1R,  6, 3, "sai3", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLKF(RCC_APB2ENR,  23, RCC_D2CCIP1R,  6, 3, "sai2", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLKF(RCC_APB2ENR,  22, RCC_D2CCIP1R,  0, 3, "sai1", sai_src,
+		 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT),
+	KER_CLK(RCC_APB2ENR,  20, RCC_D2CCIP1R, 16, 3, "spi5", spi_src2),
+	KER_CLK(RCC_APB2ENR,  13, RCC_D2CCIP1R, 16, 3, "spi4", spi_src2),
+	KER_CLK(RCC_APB2ENR,  12, RCC_D2CCIP1R, 16, 3, "spi1", spi_src1),
+	KER_CLK(RCC_APB2ENR,   5, RCC_D2CCIP2R,  3, 3, "usart6", usart_src1),
+	KER_CLK(RCC_APB2ENR,   4, RCC_D2CCIP2R,  3, 3, "usart1", usart_src1),
+	KER_CLK(RCC_APB4ENR,  21, RCC_D3CCIPR,	24, 3, "sai4b", sai_src),
+	KER_CLK(RCC_APB4ENR,  21, RCC_D3CCIPR,	21, 3, "sai4a", sai_src),
+	KER_CLK(RCC_APB4ENR,  12, RCC_D3CCIPR,	13, 3, "lptim5", lptim_src2),
+	KER_CLK(RCC_APB4ENR,  11, RCC_D3CCIPR,	13, 3, "lptim4", lptim_src2),
+	KER_CLK(RCC_APB4ENR,  10, RCC_D3CCIPR,	13, 3, "lptim3", lptim_src2),
+	KER_CLK(RCC_APB4ENR,   9, RCC_D3CCIPR,	10, 3, "lptim2", lptim_src2),
+	KER_CLK(RCC_APB4ENR,   7, RCC_D3CCIPR,	 8, 2, "i2c4", i2c_src2),
+	KER_CLK(RCC_APB4ENR,   5, RCC_D3CCIPR,	28, 3, "spi6", spi_src3),
+	KER_CLK(RCC_APB4ENR,   3, RCC_D3CCIPR,	 0, 3, "lpuart1", lpuart1_src),
+};
+
+static struct composite_clk_gcfg kernel_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_GATE(NULL, 0),
+};
+
+/* RTC clock */
+/*
+ * RTC & LSE registers are protected against parasitic write access.
+ * PWR_CR_DBP bit must be set to enable write access to RTC registers.
+ */
+/* STM32_PWR_CR */
+#define PWR_CR				0x00
+/* STM32_PWR_CR bit field */
+#define PWR_CR_DBP			BIT(8)
+
+static struct composite_clk_gcfg rtc_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_GATE(NULL, 0),
+};
+
+static const struct composite_clk_cfg rtc_clk =
+	KER_CLK(RCC_BDCR, 15, RCC_BDCR, 8, 2, "rtc_ck", rtc_src);
+
+/* Micro-controller output clock */
+static struct composite_clk_gcfg mco_clk_cfg = {
+	M_CFG_MUX(NULL, 0),
+	M_CFG_DIV(NULL,	CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO),
+};
+
+#define M_MCO_F(_name, _parents, _mux_offset,  _mux_shift, _mux_width,\
+		_rate_offset, _rate_shift, _rate_width,\
+		_flags)\
+{\
+	.mux = &(struct muxdiv_cfg) {_mux_offset, _mux_shift, _mux_width },\
+	.div = &(struct muxdiv_cfg) {_rate_offset, _rate_shift, _rate_width},\
+	.gate = NULL,\
+	.name = _name,\
+	.parent_name = _parents,\
+	.num_parents = ARRAY_SIZE(_parents),\
+	.flags = _flags,\
+}
+
+static const struct composite_clk_cfg mco_clk[] = {
+	M_MCO_F("mco1", mco_src1, RCC_CFGR, 22, 4, RCC_CFGR, 18, 4, 0),
+	M_MCO_F("mco2", mco_src2, RCC_CFGR, 29, 3, RCC_CFGR, 25, 4, 0),
+};
+
+static void __init stm32h7_rcc_init(struct device_node *np)
+{
+	struct clk_hw_onecell_data *clk_data;
+	struct composite_cfg c_cfg;
+	int n;
+	const char *hse_clk, *lse_clk, *i2s_clk;
+	struct regmap *pdrm;
+
+	clk_data = kzalloc(sizeof(*clk_data) +
+			sizeof(*clk_data->hws) * STM32H7_MAX_CLKS,
+			GFP_KERNEL);
+	if (!clk_data)
+		return;
+
+	clk_data->num = STM32H7_MAX_CLKS;
+
+	hws = clk_data->hws;
+
+	for (n = 0; n < STM32H7_MAX_CLKS; n++)
+		hws[n] = ERR_PTR(-ENOENT);
+
+	/* get RCC base @ from DT */
+	base = of_iomap(np, 0);
+	if (!base) {
+		pr_err("%s: unable to map resource", np->name);
+		goto err_free_clks;
+	}
+
+	pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
+	if (IS_ERR(pdrm))
+		pr_warn("%s: Unable to get syscfg\n", __func__);
+	else
+		/* In any case disable backup domain write protection
+		 * and will never be enabled.
+		 * Needed by LSE & RTC clocks. */
+		regmap_update_bits(pdrm, PWR_CR, PWR_CR_DBP, PWR_CR_DBP);
+
+	/* Put parent names from DT */
+	hse_clk = of_clk_get_parent_name(np, 0);
+	lse_clk = of_clk_get_parent_name(np, 1);
+	i2s_clk = of_clk_get_parent_name(np, 2);
+
+	sai_src[3] = i2s_clk;
+	spi_src1[3] = i2s_clk;
+
+	/* Register Internal oscillators */
+	clk_hw_register_fixed_rate(NULL, "clk-hsi", NULL, 0, 64000000);
+	clk_hw_register_fixed_rate(NULL, "clk-csi", NULL, 0, 4000000);
+	clk_hw_register_fixed_rate(NULL, "clk-lsi", NULL, 0, 32000);
+	clk_hw_register_fixed_rate(NULL, "clk-rc48", NULL, 0, 48000);
+
+	/* This clock is coming from outside. Frequencies unknown */
+	hws[CK_DSI_PHY] = clk_hw_register_fixed_rate(NULL, "ck_dsi_phy", NULL,
+			0, 0);
+
+	hws[HSI_DIV] = clk_hw_register_divider(NULL, "hsidiv", "clk-hsi", 0,
+			base + RCC_CR, 3, 2, CLK_DIVIDER_POWER_OF_TWO,
+			&stm32rcc_lock);
+
+	hws[HSE_1M] = clk_hw_register_divider(NULL, "hse_1M", "hse_ck",	0,
+			base + RCC_CFGR, 8, 6, CLK_DIVIDER_ONE_BASED |
+			CLK_DIVIDER_ALLOW_ZERO,
+			&stm32rcc_lock);
+
+	/* Mux system clocks */
+	for (n = 0; n < ARRAY_SIZE(stm32_mclk); n++)
+		hws[MCLK_BANK + n] = clk_hw_register_mux(NULL,
+				stm32_mclk[n].name,
+				stm32_mclk[n].parents,
+				stm32_mclk[n].num_parents,
+				stm32_mclk[n].flags,
+				stm32_mclk[n].offset + base,
+				stm32_mclk[n].shift,
+				stm32_mclk[n].width,
+				0,
+				&stm32rcc_lock);
+
+	register_core_and_bus_clocks();
+
+	/* Oscillary clocks */
+	for (n = 0; n < ARRAY_SIZE(stm32_oclk); n++)
+		hws[OSC_BANK + n] = clk_register_ready_gate(NULL,
+				stm32_oclk[n].name,
+				stm32_oclk[n].parent,
+				stm32_oclk[n].gate_offset + base,
+				stm32_oclk[n].bit_idx,
+				stm32_oclk[n].bit_rdy,
+				stm32_oclk[n].flags,
+				&stm32rcc_lock);
+
+	hws[HSE_CK] = clk_register_ready_gate(NULL,
+				"hse_ck",
+				hse_clk,
+				RCC_CR + base,
+				16, 17,
+				0,
+				&stm32rcc_lock);
+
+	hws[LSE_CK] = clk_register_ready_gate(NULL,
+				"lse_ck",
+				lse_clk,
+				RCC_BDCR + base,
+				0, 1,
+				0,
+				&stm32rcc_lock);
+
+	hws[CSI_KER_DIV122 + n] = clk_hw_register_fixed_factor(NULL,
+			"csi_ker_div122", "csi_ker", 0, 1, 122);
+
+	/* PLLs */
+	for (n = 0; n < ARRAY_SIZE(stm32_pll); n++) {
+		int odf;
+
+		/* Register the VCO */
+		clk_register_stm32_pll(NULL, stm32_pll[n].name,
+				stm32_pll[n].parent_name, stm32_pll[n].flags,
+				stm32_pll[n].cfg,
+				&stm32rcc_lock);
+
+		/* Register the 3 output dividers */
+		for (odf = 0; odf < 3; odf++) {
+			int idx = n * 3 + odf;
+
+			get_cfg_composite_div(&odf_clk_gcfg, &stm32_odf[n][odf],
+					&c_cfg,	&stm32rcc_lock);
+
+			hws[ODF_BANK + idx] = clk_hw_register_composite(NULL,
+					stm32_odf[n][odf].name,
+					stm32_odf[n][odf].parent_name,
+					stm32_odf[n][odf].num_parents,
+					c_cfg.mux_hw, c_cfg.mux_ops,
+					c_cfg.div_hw, c_cfg.div_ops,
+					c_cfg.gate_hw, c_cfg.gate_ops,
+					stm32_odf[n][odf].flags);
+		}
+	}
+
+	/* Peripheral clocks */
+	for (n = 0; n < ARRAY_SIZE(pclk); n++)
+		hws[PERIF_BANK + n] = clk_hw_register_gate(NULL, pclk[n].name,
+				pclk[n].parent,
+				pclk[n].flags, base + pclk[n].gate_offset,
+				pclk[n].bit_idx, pclk[n].flags, &stm32rcc_lock);
+
+	/* Kernel clocks */
+	for (n = 0; n < ARRAY_SIZE(kclk); n++) {
+		get_cfg_composite_div(&kernel_clk_cfg, &kclk[n], &c_cfg,
+				&stm32rcc_lock);
+
+		hws[KERN_BANK + n] = clk_hw_register_composite(NULL,
+				kclk[n].name,
+				kclk[n].parent_name,
+				kclk[n].num_parents,
+				c_cfg.mux_hw, c_cfg.mux_ops,
+				c_cfg.div_hw, c_cfg.div_ops,
+				c_cfg.gate_hw, c_cfg.gate_ops,
+				kclk[n].flags);
+	}
+
+	/* RTC clock (default state is off) */
+	clk_hw_register_fixed_rate(NULL, "off", NULL, 0, 0);
+
+	get_cfg_composite_div(&rtc_clk_cfg, &rtc_clk, &c_cfg, &stm32rcc_lock);
+
+	hws[RTC_CK] = clk_hw_register_composite(NULL,
+			rtc_clk.name,
+			rtc_clk.parent_name,
+			rtc_clk.num_parents,
+			c_cfg.mux_hw, c_cfg.mux_ops,
+			c_cfg.div_hw, c_cfg.div_ops,
+			c_cfg.gate_hw, c_cfg.gate_ops,
+			rtc_clk.flags);
+
+	/* Micro-controller clocks */
+	for (n = 0; n < ARRAY_SIZE(mco_clk); n++) {
+		get_cfg_composite_div(&mco_clk_cfg, &mco_clk[n], &c_cfg,
+				&stm32rcc_lock);
+
+		hws[MCO_BANK + n] = clk_hw_register_composite(NULL,
+				mco_clk[n].name,
+				mco_clk[n].parent_name,
+				mco_clk[n].num_parents,
+				c_cfg.mux_hw, c_cfg.mux_ops,
+				c_cfg.div_hw, c_cfg.div_ops,
+				c_cfg.gate_hw, c_cfg.gate_ops,
+				mco_clk[n].flags);
+	}
+
+	of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
+
+	return;
+
+err_free_clks:
+	kfree(clk_data);
+}
+
+/* The RCC node is a clock and reset controller, and these
+ * functionalities are supported by different drivers that
+ * matches the same compatible strings.
+ */
+CLK_OF_DECLARE_DRIVER(stm32h7_rcc, "st,stm32h743-rcc", stm32h7_rcc_init);
diff --git a/include/dt-bindings/clock/stm32h7-clks.h b/include/dt-bindings/clock/stm32h7-clks.h
new file mode 100644
index 0000000..6637272
--- /dev/null
+++ b/include/dt-bindings/clock/stm32h7-clks.h
@@ -0,0 +1,165 @@
+/* SYS, CORE AND BUS CLOCKS */
+#define SYS_D1CPRE 0
+#define HCLK 1
+#define PCLK1 2
+#define PCLK2 3
+#define PCLK3 4
+#define PCLK4 5
+#define HSI_DIV 6
+#define HSE_1M 7
+#define I2S_CKIN 8
+#define CK_DSI_PHY 9
+#define HSE_CK 10
+#define LSE_CK 11
+#define CSI_KER_DIV122 12
+#define RTC_CK 13
+#define CPU_SYSTICK 14
+
+/* OSCILLATOR BANK */
+#define OSC_BANK 18
+#define HSI_CK 18
+#define HSI_KER_CK 19
+#define CSI_CK 20
+#define CSI_KER_CK 21
+#define RC48_CK 22
+#define LSI_CK 23
+
+/* MCLOCK BANK */
+#define MCLK_BANK 28
+#define PER_CK 28
+#define PLLSRC 29
+#define SYS_CK 30
+#define TRACEIN_CK 31
+
+/* ODF BANK */
+#define ODF_BANK 32
+#define PLL1_P 32
+#define PLL1_Q 33
+#define PLL1_R 34
+#define PLL2_P 35
+#define PLL2_Q 36
+#define PLL2_R 37
+#define PLL3_P 38
+#define PLL3_Q 39
+#define PLL3_R 40
+
+/* MCO BANK */
+#define MCO_BANK 41
+#define MCO1 41
+#define MCO2 42
+
+/* PERIF BANK */
+#define PERIF_BANK 50
+#define D1SRAM1_CK 50
+#define ITCM_CK 51
+#define DTCM2_CK 52
+#define DTCM1_CK 53
+#define FLITF_CK 54
+#define JPGDEC_CK 55
+#define DMA2D_CK 56
+#define MDMA_CK 57
+#define USB2ULPI_CK 58
+#define USB1ULPI_CK 59
+#define ETH1RX_CK 60
+#define ETH1TX_CK 61
+#define ETH1MAC_CK 62
+#define ART_CK 63
+#define DMA2_CK 64
+#define DMA1_CK 65
+#define D2SRAM3_CK 66
+#define D2SRAM2_CK 67
+#define D2SRAM1_CK 68
+#define HASH_CK 69
+#define CRYPT_CK 70
+#define CAMITF_CK 71
+#define BKPRAM_CK 72
+#define HSEM_CK 73
+#define BDMA_CK 74
+#define CRC_CK 75
+#define GPIOK_CK 76
+#define GPIOJ_CK 77
+#define GPIOI_CK 78
+#define GPIOH_CK 79
+#define GPIOG_CK 80
+#define GPIOF_CK 81
+#define GPIOE_CK 82
+#define GPIOD_CK 83
+#define GPIOC_CK 84
+#define GPIOB_CK 85
+#define GPIOA_CK 86
+#define WWDG1_CK 87
+#define DAC12_CK 88
+#define WWDG2_CK 89
+#define TIM14_CK 90
+#define TIM13_CK 91
+#define TIM12_CK 92
+#define TIM7_CK 93
+#define TIM6_CK 94
+#define TIM5_CK 95
+#define TIM4_CK 96
+#define TIM3_CK 97
+#define TIM2_CK 98
+#define MDIOS_CK 99
+#define OPAMP_CK 100
+#define CRS_CK 101
+#define TIM17_CK 102
+#define TIM16_CK 103
+#define TIM15_CK 104
+#define TIM8_CK 105
+#define TIM1_CK 106
+#define TMPSENS_CK 107
+#define RTCAPB_CK 108
+#define VREF_CK 109
+#define COMP12_CK 110
+#define SYSCFG_CK 111
+
+/* KERNEL BANK */
+#define KERN_BANK 120
+#define SDMMC1_CK 120
+#define QUADSPI_CK 121
+#define FMC_CK 122
+#define USB2OTG_CK 123
+#define USB1OTG_CK 124
+#define ADC12_CK 125
+#define SDMMC2_CK 126
+#define RNG_CK 127
+#define ADC3_CK 128
+#define DSI_CK 129
+#define LTDC_CK 130
+#define USART8_CK 131
+#define USART7_CK 132
+#define HDMICEC_CK 133
+#define I2C3_CK 134
+#define I2C2_CK 135
+#define I2C1_CK 136
+#define UART5_CK 137
+#define UART4_CK 138
+#define USART3_CK 139
+#define USART2_CK 140
+#define SPDIFRX_CK 141
+#define SPI3_CK 142
+#define SPI2_CK 143
+#define LPTIM1_CK 144
+#define FDCAN_CK 145
+#define SWP_CK 146
+#define HRTIM_CK 147
+#define DFSDM1_CK 148
+#define SAI3_CK 149
+#define SAI2_CK 150
+#define SAI1_CK 151
+#define SPI5_CK 152
+#define SPI4_CK 153
+#define SPI1_CK 154
+#define USART6_CK 155
+#define USART1_CK 156
+#define SAI4B_CK 157
+#define SAI4A_CK 158
+#define LPTIM5_CK 159
+#define LPTIM4_CK 160
+#define LPTIM3_CK 161
+#define LPTIM2_CK 162
+#define I2C4_CK 163
+#define SPI6_CK 164
+#define LPUART1_CK 165
+
+#define STM32H7_MAX_CLKS 166
diff --git a/include/dt-bindings/mfd/stm32h7-rcc.h b/include/dt-bindings/mfd/stm32h7-rcc.h
new file mode 100644
index 0000000..461a8e0
--- /dev/null
+++ b/include/dt-bindings/mfd/stm32h7-rcc.h
@@ -0,0 +1,136 @@
+/*
+ * This header provides constants for the STM32H7 RCC IP
+ */
+
+#ifndef _DT_BINDINGS_MFD_STM32H7_RCC_H
+#define _DT_BINDINGS_MFD_STM32H7_RCC_H
+
+/* AHB3 */
+#define STM32H7_RCC_AHB3_MDMA		0
+#define STM32H7_RCC_AHB3_DMA2D		4
+#define STM32H7_RCC_AHB3_JPGDEC		5
+#define STM32H7_RCC_AHB3_FMC		12
+#define STM32H7_RCC_AHB3_QUADSPI	14
+#define STM32H7_RCC_AHB3_SDMMC1		16
+#define STM32H7_RCC_AHB3_CPU		31
+
+#define STM32H7_AHB3_RESET(bit) (STM32H7_RCC_AHB3_##bit + (0x7C * 8))
+
+/* AHB1 */
+#define STM32H7_RCC_AHB1_DMA1		0
+#define STM32H7_RCC_AHB1_DMA2		1
+#define STM32H7_RCC_AHB1_ADC12		5
+#define STM32H7_RCC_AHB1_ART		14
+#define STM32H7_RCC_AHB1_ETH1MAC	15
+#define STM32H7_RCC_AHB1_USB1OTG	25
+#define STM32H7_RCC_AHB1_USB2OTG	27
+
+#define STM32H7_AHB1_RESET(bit) (STM32H7_RCC_AHB1_##bit + (0x80 * 8))
+
+/* AHB2 */
+#define STM32H7_RCC_AHB2_CAMITF		0
+#define STM32H7_RCC_AHB2_CRYPT		4
+#define STM32H7_RCC_AHB2_HASH		5
+#define STM32H7_RCC_AHB2_RNG		6
+#define STM32H7_RCC_AHB2_SDMMC2		9
+
+#define STM32H7_AHB2_RESET(bit) (STM32H7_RCC_AHB2_##bit + (0x84 * 8))
+
+/* AHB4 */
+#define STM32H7_RCC_AHB4_GPIOA		0
+#define STM32H7_RCC_AHB4_GPIOB		1
+#define STM32H7_RCC_AHB4_GPIOC		2
+#define STM32H7_RCC_AHB4_GPIOD		3
+#define STM32H7_RCC_AHB4_GPIOE		4
+#define STM32H7_RCC_AHB4_GPIOF		5
+#define STM32H7_RCC_AHB4_GPIOG		6
+#define STM32H7_RCC_AHB4_GPIOH		7
+#define STM32H7_RCC_AHB4_GPIOI		8
+#define STM32H7_RCC_AHB4_GPIOJ		9
+#define STM32H7_RCC_AHB4_GPIOK		10
+#define STM32H7_RCC_AHB4_CRC		19
+#define STM32H7_RCC_AHB4_BDMA		21
+#define STM32H7_RCC_AHB4_ADC3		24
+#define STM32H7_RCC_AHB4_HSEM		25
+
+#define STM32H7_AHB4_RESET(bit) (STM32H7_RCC_AHB4_##bit + (0x88 * 8))
+
+/* APB3 */
+#define STM32H7_RCC_APB3_LTDC		3
+#define STM32H7_RCC_APB3_DSI		4
+
+#define STM32H7_APB3_RESET(bit) (STM32H7_RCC_APB3_##bit + (0x8C * 8))
+
+/* APB1L */
+#define STM32H7_RCC_APB1L_TIM2		0
+#define STM32H7_RCC_APB1L_TIM3		1
+#define STM32H7_RCC_APB1L_TIM4		2
+#define STM32H7_RCC_APB1L_TIM5		3
+#define STM32H7_RCC_APB1L_TIM6		4
+#define STM32H7_RCC_APB1L_TIM7		5
+#define STM32H7_RCC_APB1L_TIM12		6
+#define STM32H7_RCC_APB1L_TIM13		7
+#define STM32H7_RCC_APB1L_TIM14		8
+#define STM32H7_RCC_APB1L_LPTIM1	9
+#define STM32H7_RCC_APB1L_SPI2		14
+#define STM32H7_RCC_APB1L_SPI3		15
+#define STM32H7_RCC_APB1L_SPDIF_RX	16
+#define STM32H7_RCC_APB1L_USART2	17
+#define STM32H7_RCC_APB1L_USART3	18
+#define STM32H7_RCC_APB1L_UART4		19
+#define STM32H7_RCC_APB1L_UART5		20
+#define STM32H7_RCC_APB1L_I2C1		21
+#define STM32H7_RCC_APB1L_I2C2		22
+#define STM32H7_RCC_APB1L_I2C3		23
+#define STM32H7_RCC_APB1L_HDMICEC	27
+#define STM32H7_RCC_APB1L_DAC12		29
+#define STM32H7_RCC_APB1L_USART7	30
+#define STM32H7_RCC_APB1L_USART8	31
+
+#define STM32H7_APB1L_RESET(bit) (STM32H7_RCC_APB1L_##bit + (0x90 * 8))
+
+/* APB1H */
+#define STM32H7_RCC_APB1H_CRS		1
+#define STM32H7_RCC_APB1H_SWP		2
+#define STM32H7_RCC_APB1H_OPAMP		4
+#define STM32H7_RCC_APB1H_MDIOS		5
+#define STM32H7_RCC_APB1H_FDCAN		8
+
+#define STM32H7_APB1H_RESET(bit) (STM32H7_RCC_APB1H_##bit + (0x94 * 8))
+
+/* APB2 */
+#define STM32H7_RCC_APB2_TIM1		0
+#define STM32H7_RCC_APB2_TIM8		1
+#define STM32H7_RCC_APB2_USART1		4
+#define STM32H7_RCC_APB2_USART6		5
+#define STM32H7_RCC_APB2_SPI1		12
+#define STM32H7_RCC_APB2_SPI4		13
+#define STM32H7_RCC_APB2_TIM15		16
+#define STM32H7_RCC_APB2_TIM16		17
+#define STM32H7_RCC_APB2_TIM17		18
+#define STM32H7_RCC_APB2_SPI5		20
+#define STM32H7_RCC_APB2_SAI1		22
+#define STM32H7_RCC_APB2_SAI2		23
+#define STM32H7_RCC_APB2_SAI3		24
+#define STM32H7_RCC_APB2_DFSDM1		28
+#define STM32H7_RCC_APB2_HRTIM		29
+
+#define STM32H7_APB2_RESET(bit) (STM32H7_RCC_APB2_##bit + (0x98 * 8))
+
+/* APB4 */
+#define STM32H7_RCC_APB4_SYSCFG		1
+#define STM32H7_RCC_APB4_LPUART1	3
+#define STM32H7_RCC_APB4_SPI6		5
+#define STM32H7_RCC_APB4_I2C4		7
+#define STM32H7_RCC_APB4_LPTIM2		9
+#define STM32H7_RCC_APB4_LPTIM3		10
+#define STM32H7_RCC_APB4_LPTIM4		11
+#define STM32H7_RCC_APB4_LPTIM5		12
+#define STM32H7_RCC_APB4_COMP12		14
+#define STM32H7_RCC_APB4_VREF		15
+#define STM32H7_RCC_APB4_SAI4		21
+#define STM32H7_RCC_APB4_TMPSENS	26
+
+#define STM32H7_APB4_RESET(bit) (STM32H7_RCC_APB4_##bit + (0x9C * 8))
+
+#endif /* _DT_BINDINGS_MFD_STM32H7_RCC_H */
-- 
1.9.1

Re: [PATCH v7 1/3] clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()

[Vladimir Zapolskiy]

Hello Gabriel,

On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> We need to export clk_gate_is_enabled() from clk framework, then
> to avoid compilation issue we have to rename clk_gate_is_enabled()
> in NXP LPC32xx clock driver.
> We changed all gate op with 'lpc32xx_' prefix:
> lpc32xx_clk_gate_enable(),
> lpc32xx_clk_gate_disable(),
> lpc32xx_clk_gate_is_enabled().
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

Acked-by: Vladimir Zapolskiy <vz@mleia.com>

--
With best wishes,
Vladimir

Re: [PATCH v7 1/3] clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()

[Vladimir Zapolskiy]

Hello Gabriel,

On 07/19/2017 05:25 PM, gabriel.fernandez-qxv4g6HH51o@public.gmane.org wrote:
> From: Gabriel Fernandez <gabriel.fernandez-qxv4g6HH51o@public.gmane.org>
> 
> We need to export clk_gate_is_enabled() from clk framework, then
> to avoid compilation issue we have to rename clk_gate_is_enabled()
> in NXP LPC32xx clock driver.
> We changed all gate op with 'lpc32xx_' prefix:
> lpc32xx_clk_gate_enable(),
> lpc32xx_clk_gate_disable(),
> lpc32xx_clk_gate_is_enabled().
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez-qxv4g6HH51o@public.gmane.org>

Acked-by: Vladimir Zapolskiy <vz-ChpfBGZJDbMAvxtiuMwx3w@public.gmane.org>

--
With best wishes,
Vladimir
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[PATCH v7 1/3] clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()

[Vladimir Zapolskiy]

Hello Gabriel,

On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> We need to export clk_gate_is_enabled() from clk framework, then
> to avoid compilation issue we have to rename clk_gate_is_enabled()
> in NXP LPC32xx clock driver.
> We changed all gate op with 'lpc32xx_' prefix:
> lpc32xx_clk_gate_enable(),
> lpc32xx_clk_gate_disable(),
> lpc32xx_clk_gate_is_enabled().
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>

Acked-by: Vladimir Zapolskiy <vz@mleia.com>

--
With best wishes,
Vladimir

Re: [PATCH v7 2/3] clk: gate: expose clk_gate_ops::is_enabled

[Vladimir Zapolskiy]

On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> This patch exposes clk_gate_ops::is_enabled as functions
> that can be directly called and assigned in places like this so
> we don't need wrapper functions that do nothing besides forward
> the call.
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> Sugested by Stephen Boyd <sboyd@codeaurora.org>

Fixing the spelling etc. I believe the last tag line should be

Suggested-by: Stephen Boyd <sboyd@codeaurora.org>

--
With best wishes,
Vladimir

[PATCH v7 2/3] clk: gate: expose clk_gate_ops::is_enabled

[Vladimir Zapolskiy]

On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> This patch exposes clk_gate_ops::is_enabled as functions
> that can be directly called and assigned in places like this so
> we don't need wrapper functions that do nothing besides forward
> the call.
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> Sugested by Stephen Boyd <sboyd@codeaurora.org>

Fixing the spelling etc. I believe the last tag line should be

Suggested-by: Stephen Boyd <sboyd@codeaurora.org>

--
With best wishes,
Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Vladimir Zapolskiy]

Hello Gabriel,

On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> This patch enables clocks for STM32H743 boards.
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> for MFD changes:
> Acked-by: Lee Jones <lee.jones@linaro.org>
> 
> for DT-Bindings
> Acked-by: Rob Herring <robh@kernel.org>
> ---
>  .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++

I'll provide some review comments about device tree bindings only.

>  drivers/clk/Makefile                               |    1 +
>  drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>  include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>  include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>  5 files changed, 1793 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>  create mode 100644 drivers/clk/clk-stm32h7.c
>  create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>  create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
> new file mode 100644
> index 0000000..442c50c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
> @@ -0,0 +1,82 @@
> +STMicroelectronics STM32H7 Reset and Clock Controller
> +=====================================================
> +
> +The RCC IP is both a reset and a clock controller.
> +
> +Please refer to clock-bindings.txt for common clock controller binding usage.
> +Please also refer to reset.txt for common reset controller binding usage.
> +
> +Required properties:
> +- compatible: Should be:
> +  "st,stm32h743-rcc"
> +
> +- reg: should be register base and length as documented in the
> +  datasheet
> +
> +- #reset-cells: 1, see below
> +
> +- #clock-cells : from common clock binding; shall be set to 1
> +
> +- clocks: External oscillator clock phandle
> +  - high speed external clock signal (HSE)
> +  - low speed external clock signal (LSE)
> +  - external I2S clock (I2S_CKIN)
> +
> +Optional properties:
> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
> +  write protection (RTC clock).
> +
> +Example:
> +
> +	rcc: rcc@58024400 {

'rcc' as a generic device node name is awkward.

I believe the main function of the device is clock controller (unlikely
a generic reset controller can be converted into a clock controller),
the locations of the document and device driver also indicate that
primarily it is a clock controller, so I suggest to replace device node
name with 'clock-controller' like below:

	rcc: clock-controller@58024400 {

> +		#reset-cells = <1>;
> +		#clock-cells = <2>

Missing trailing semicolon       ^^^

My recommendation is to move #reset-cells and #clock-cells properties
down after 'reg' or 'clocks' property in the list.

> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
> +		reg = <0x58024400 0x400>;
> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
> +
> +		st,syscfg = <&pwrcfg>;
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;

Please drop #address-cells and #size-cells properties completely, from
the document the device node does not define any children subnodes.

> +	};
> +
> +The peripheral clock consumer should specify the desired clock by
> +having the clock ID in its "clocks" phandle cell.
> +
> +All available clocks are defined as preprocessor macros in
> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
> +tree sources.
> +
> +Example:
> +
> +		timer5: timer@40000c00 {
> +			compatible = "st,stm32-timer";
> +			reg = <0x40000c00 0x400>;
> +			interrupts = <50>;
> +			clocks = <&rcc TIM5_CK>;
> +

Please remote the empty line above.

> +		};
> +
> +Specifying softreset control of devices
> +=======================================
> +
> +Device nodes should specify the reset channel required in their "resets"
> +property, containing a phandle to the reset device node and an index specifying
> +which channel to use.
> +The index is the bit number within the RCC registers bank, starting from RCC
> +base address.
> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
> +Where bit_offset is the bit offset within the register.
> +
> +For example, for CRC reset:
> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
> +
> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h

Double slashes ---------->                                           ^^^^ 

I have doubts if it is permitted to add source paths into the device
tree bindings documentation, because such information is specific to
the Linux source code.

Rob, can you clarify please?

> +header and can be used in device tree sources.
> +
> +example:

For unification, please capitalize it: 'Example:'

> +
> +	timer2 {
> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
> +	};

--
With best wishes,
Vladimir

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Vladimir Zapolskiy]

Hello Gabriel,

On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> This patch enables clocks for STM32H743 boards.
> 
> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
> 
> for MFD changes:
> Acked-by: Lee Jones <lee.jones@linaro.org>
> 
> for DT-Bindings
> Acked-by: Rob Herring <robh@kernel.org>
> ---
>  .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++

I'll provide some review comments about device tree bindings only.

>  drivers/clk/Makefile                               |    1 +
>  drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>  include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>  include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>  5 files changed, 1793 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>  create mode 100644 drivers/clk/clk-stm32h7.c
>  create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>  create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
> new file mode 100644
> index 0000000..442c50c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
> @@ -0,0 +1,82 @@
> +STMicroelectronics STM32H7 Reset and Clock Controller
> +=====================================================
> +
> +The RCC IP is both a reset and a clock controller.
> +
> +Please refer to clock-bindings.txt for common clock controller binding usage.
> +Please also refer to reset.txt for common reset controller binding usage.
> +
> +Required properties:
> +- compatible: Should be:
> +  "st,stm32h743-rcc"
> +
> +- reg: should be register base and length as documented in the
> +  datasheet
> +
> +- #reset-cells: 1, see below
> +
> +- #clock-cells : from common clock binding; shall be set to 1
> +
> +- clocks: External oscillator clock phandle
> +  - high speed external clock signal (HSE)
> +  - low speed external clock signal (LSE)
> +  - external I2S clock (I2S_CKIN)
> +
> +Optional properties:
> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
> +  write protection (RTC clock).
> +
> +Example:
> +
> +	rcc: rcc at 58024400 {

'rcc' as a generic device node name is awkward.

I believe the main function of the device is clock controller (unlikely
a generic reset controller can be converted into a clock controller),
the locations of the document and device driver also indicate that
primarily it is a clock controller, so I suggest to replace device node
name with 'clock-controller' like below:

	rcc: clock-controller at 58024400 {

> +		#reset-cells = <1>;
> +		#clock-cells = <2>

Missing trailing semicolon       ^^^

My recommendation is to move #reset-cells and #clock-cells properties
down after 'reg' or 'clocks' property in the list.

> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
> +		reg = <0x58024400 0x400>;
> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
> +
> +		st,syscfg = <&pwrcfg>;
> +
> +		#address-cells = <1>;
> +		#size-cells = <0>;

Please drop #address-cells and #size-cells properties completely, from
the document the device node does not define any children subnodes.

> +	};
> +
> +The peripheral clock consumer should specify the desired clock by
> +having the clock ID in its "clocks" phandle cell.
> +
> +All available clocks are defined as preprocessor macros in
> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
> +tree sources.
> +
> +Example:
> +
> +		timer5: timer at 40000c00 {
> +			compatible = "st,stm32-timer";
> +			reg = <0x40000c00 0x400>;
> +			interrupts = <50>;
> +			clocks = <&rcc TIM5_CK>;
> +

Please remote the empty line above.

> +		};
> +
> +Specifying softreset control of devices
> +=======================================
> +
> +Device nodes should specify the reset channel required in their "resets"
> +property, containing a phandle to the reset device node and an index specifying
> +which channel to use.
> +The index is the bit number within the RCC registers bank, starting from RCC
> +base address.
> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
> +Where bit_offset is the bit offset within the register.
> +
> +For example, for CRC reset:
> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
> +
> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h

Double slashes ---------->                                           ^^^^ 

I have doubts if it is permitted to add source paths into the device
tree bindings documentation, because such information is specific to
the Linux source code.

Rob, can you clarify please?

> +header and can be used in device tree sources.
> +
> +example:

For unification, please capitalize it: 'Example:'

> +
> +	timer2 {
> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
> +	};

--
With best wishes,
Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

Hi Vladimir,


On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> Hello Gabriel,
>
> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> This patch enables clocks for STM32H743 boards.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> for MFD changes:
>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>
>> for DT-Bindings
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
> I'll provide some review comments about device tree bindings only.
>
>>   drivers/clk/Makefile                               |    1 +
>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>   5 files changed, 1793 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> new file mode 100644
>> index 0000000..442c50c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> @@ -0,0 +1,82 @@
>> +STMicroelectronics STM32H7 Reset and Clock Controller
>> +=====================================================
>> +
>> +The RCC IP is both a reset and a clock controller.
>> +
>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>> +Please also refer to reset.txt for common reset controller binding usage.
>> +
>> +Required properties:
>> +- compatible: Should be:
>> +  "st,stm32h743-rcc"
>> +
>> +- reg: should be register base and length as documented in the
>> +  datasheet
>> +
>> +- #reset-cells: 1, see below
>> +
>> +- #clock-cells : from common clock binding; shall be set to 1
>> +
>> +- clocks: External oscillator clock phandle
>> +  - high speed external clock signal (HSE)
>> +  - low speed external clock signal (LSE)
>> +  - external I2S clock (I2S_CKIN)
>> +
>> +Optional properties:
>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>> +  write protection (RTC clock).
>> +
>> +Example:
>> +
>> +	rcc: rcc@58024400 {
> 'rcc' as a generic device node name is awkward.
>
> I believe the main function of the device is clock controller (unlikely
> a generic reset controller can be converted into a clock controller),
> the locations of the document and device driver also indicate that
> primarily it is a clock controller, so I suggest to replace device node
> name with 'clock-controller' like below:
I prefer to keep rcc node name, to be coherent with the other ST 
platforms (STM32F4/F7)
> 	rcc: clock-controller@58024400 {
>
>> +		#reset-cells = <1>;
>> +		#clock-cells = <2>
> Missing trailing semicolon       ^^^
ok
> My recommendation is to move #reset-cells and #clock-cells properties
> down after 'reg' or 'clocks' property in the list.
ok
>
>> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
>> +		reg = <0x58024400 0x400>;
>> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
>> +
>> +		st,syscfg = <&pwrcfg>;
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
> Please drop #address-cells and #size-cells properties completely, from
> the document the device node does not define any children subnodes.
ok
>> +	};
>> +
>> +The peripheral clock consumer should specify the desired clock by
>> +having the clock ID in its "clocks" phandle cell.
>> +
>> +All available clocks are defined as preprocessor macros in
>> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
>> +tree sources.
>> +
>> +Example:
>> +
>> +		timer5: timer@40000c00 {
>> +			compatible = "st,stm32-timer";
>> +			reg = <0x40000c00 0x400>;
>> +			interrupts = <50>;
>> +			clocks = <&rcc TIM5_CK>;
>> +
> Please remote the empty line above.
ok
>> +		};
>> +
>> +Specifying softreset control of devices
>> +=======================================
>> +
>> +Device nodes should specify the reset channel required in their "resets"
>> +property, containing a phandle to the reset device node and an index specifying
>> +which channel to use.
>> +The index is the bit number within the RCC registers bank, starting from RCC
>> +base address.
>> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
>> +Where bit_offset is the bit offset within the register.
>> +
>> +For example, for CRC reset:
>> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
>> +
>> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
> Double slashes ---------->                                           ^^^^
ok
> I have doubts if it is permitted to add source paths into the device
> tree bindings documentation, because such information is specific to
> the Linux source code.
>
> Rob, can you clarify please?
>
>> +header and can be used in device tree sources.
>> +
>> +example:
> For unification, please capitalize it: 'Example:'
ok
>> +
>> +	timer2 {
>> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
>> +	};
> --
> With best wishes,
> Vladimir
Best Regards
Gabriel

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

Hi Vladimir,


On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> Hello Gabriel,
>
> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> This patch enables clocks for STM32H743 boards.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> for MFD changes:
>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>
>> for DT-Bindings
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
> I'll provide some review comments about device tree bindings only.
>
>>   drivers/clk/Makefile                               |    1 +
>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>   5 files changed, 1793 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> new file mode 100644
>> index 0000000..442c50c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> @@ -0,0 +1,82 @@
>> +STMicroelectronics STM32H7 Reset and Clock Controller
>> +=====================================================
>> +
>> +The RCC IP is both a reset and a clock controller.
>> +
>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>> +Please also refer to reset.txt for common reset controller binding usage.
>> +
>> +Required properties:
>> +- compatible: Should be:
>> +  "st,stm32h743-rcc"
>> +
>> +- reg: should be register base and length as documented in the
>> +  datasheet
>> +
>> +- #reset-cells: 1, see below
>> +
>> +- #clock-cells : from common clock binding; shall be set to 1
>> +
>> +- clocks: External oscillator clock phandle
>> +  - high speed external clock signal (HSE)
>> +  - low speed external clock signal (LSE)
>> +  - external I2S clock (I2S_CKIN)
>> +
>> +Optional properties:
>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>> +  write protection (RTC clock).
>> +
>> +Example:
>> +
>> +	rcc: rcc@58024400 {
> 'rcc' as a generic device node name is awkward.
>
> I believe the main function of the device is clock controller (unlikely
> a generic reset controller can be converted into a clock controller),
> the locations of the document and device driver also indicate that
> primarily it is a clock controller, so I suggest to replace device node
> name with 'clock-controller' like below:
I prefer to keep rcc node name, to be coherent with the other ST 
platforms (STM32F4/F7)
> 	rcc: clock-controller@58024400 {
>
>> +		#reset-cells = <1>;
>> +		#clock-cells = <2>
> Missing trailing semicolon       ^^^
ok
> My recommendation is to move #reset-cells and #clock-cells properties
> down after 'reg' or 'clocks' property in the list.
ok
>
>> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
>> +		reg = <0x58024400 0x400>;
>> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
>> +
>> +		st,syscfg = <&pwrcfg>;
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
> Please drop #address-cells and #size-cells properties completely, from
> the document the device node does not define any children subnodes.
ok
>> +	};
>> +
>> +The peripheral clock consumer should specify the desired clock by
>> +having the clock ID in its "clocks" phandle cell.
>> +
>> +All available clocks are defined as preprocessor macros in
>> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
>> +tree sources.
>> +
>> +Example:
>> +
>> +		timer5: timer@40000c00 {
>> +			compatible = "st,stm32-timer";
>> +			reg = <0x40000c00 0x400>;
>> +			interrupts = <50>;
>> +			clocks = <&rcc TIM5_CK>;
>> +
> Please remote the empty line above.
ok
>> +		};
>> +
>> +Specifying softreset control of devices
>> +=======================================
>> +
>> +Device nodes should specify the reset channel required in their "resets"
>> +property, containing a phandle to the reset device node and an index specifying
>> +which channel to use.
>> +The index is the bit number within the RCC registers bank, starting from RCC
>> +base address.
>> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
>> +Where bit_offset is the bit offset within the register.
>> +
>> +For example, for CRC reset:
>> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
>> +
>> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
> Double slashes ---------->                                           ^^^^
ok
> I have doubts if it is permitted to add source paths into the device
> tree bindings documentation, because such information is specific to
> the Linux source code.
>
> Rob, can you clarify please?
>
>> +header and can be used in device tree sources.
>> +
>> +example:
> For unification, please capitalize it: 'Example:'
ok
>> +
>> +	timer2 {
>> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
>> +	};
> --
> With best wishes,
> Vladimir
Best Regards
Gabriel

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

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[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

Hi Vladimir,


On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> Hello Gabriel,
>
> On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> This patch enables clocks for STM32H743 boards.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> for MFD changes:
>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>
>> for DT-Bindings
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
> I'll provide some review comments about device tree bindings only.
>
>>   drivers/clk/Makefile                               |    1 +
>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>   5 files changed, 1793 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> new file mode 100644
>> index 0000000..442c50c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> @@ -0,0 +1,82 @@
>> +STMicroelectronics STM32H7 Reset and Clock Controller
>> +=====================================================
>> +
>> +The RCC IP is both a reset and a clock controller.
>> +
>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>> +Please also refer to reset.txt for common reset controller binding usage.
>> +
>> +Required properties:
>> +- compatible: Should be:
>> +  "st,stm32h743-rcc"
>> +
>> +- reg: should be register base and length as documented in the
>> +  datasheet
>> +
>> +- #reset-cells: 1, see below
>> +
>> +- #clock-cells : from common clock binding; shall be set to 1
>> +
>> +- clocks: External oscillator clock phandle
>> +  - high speed external clock signal (HSE)
>> +  - low speed external clock signal (LSE)
>> +  - external I2S clock (I2S_CKIN)
>> +
>> +Optional properties:
>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>> +  write protection (RTC clock).
>> +
>> +Example:
>> +
>> +	rcc: rcc at 58024400 {
> 'rcc' as a generic device node name is awkward.
>
> I believe the main function of the device is clock controller (unlikely
> a generic reset controller can be converted into a clock controller),
> the locations of the document and device driver also indicate that
> primarily it is a clock controller, so I suggest to replace device node
> name with 'clock-controller' like below:
I prefer to keep rcc node name, to be coherent with the other ST 
platforms (STM32F4/F7)
> 	rcc: clock-controller at 58024400 {
>
>> +		#reset-cells = <1>;
>> +		#clock-cells = <2>
> Missing trailing semicolon       ^^^
ok
> My recommendation is to move #reset-cells and #clock-cells properties
> down after 'reg' or 'clocks' property in the list.
ok
>
>> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
>> +		reg = <0x58024400 0x400>;
>> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
>> +
>> +		st,syscfg = <&pwrcfg>;
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
> Please drop #address-cells and #size-cells properties completely, from
> the document the device node does not define any children subnodes.
ok
>> +	};
>> +
>> +The peripheral clock consumer should specify the desired clock by
>> +having the clock ID in its "clocks" phandle cell.
>> +
>> +All available clocks are defined as preprocessor macros in
>> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
>> +tree sources.
>> +
>> +Example:
>> +
>> +		timer5: timer at 40000c00 {
>> +			compatible = "st,stm32-timer";
>> +			reg = <0x40000c00 0x400>;
>> +			interrupts = <50>;
>> +			clocks = <&rcc TIM5_CK>;
>> +
> Please remote the empty line above.
ok
>> +		};
>> +
>> +Specifying softreset control of devices
>> +=======================================
>> +
>> +Device nodes should specify the reset channel required in their "resets"
>> +property, containing a phandle to the reset device node and an index specifying
>> +which channel to use.
>> +The index is the bit number within the RCC registers bank, starting from RCC
>> +base address.
>> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
>> +Where bit_offset is the bit offset within the register.
>> +
>> +For example, for CRC reset:
>> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
>> +
>> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
> Double slashes ---------->                                           ^^^^
ok
> I have doubts if it is permitted to add source paths into the device
> tree bindings documentation, because such information is specific to
> the Linux source code.
>
> Rob, can you clarify please?
>
>> +header and can be used in device tree sources.
>> +
>> +example:
> For unification, please capitalize it: 'Example:'
ok
>> +
>> +	timer2 {
>> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
>> +	};
> --
> With best wishes,
> Vladimir
Best Regards
Gabriel

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Vladimir Zapolskiy]

Hi Gabriel,

On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> Hi Vladimir,
> 
> 
> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>> Hello Gabriel,
>>
>> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> This patch enables clocks for STM32H743 boards.
>>>
>>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> for MFD changes:
>>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>>
>>> for DT-Bindings
>>> Acked-by: Rob Herring <robh@kernel.org>
>>> ---
>>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
>> I'll provide some review comments about device tree bindings only.
>>
>>>   drivers/clk/Makefile                               |    1 +
>>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>>   5 files changed, 1793 insertions(+)
>>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>>
>>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> new file mode 100644
>>> index 0000000..442c50c
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> @@ -0,0 +1,82 @@
>>> +STMicroelectronics STM32H7 Reset and Clock Controller
>>> +=====================================================
>>> +
>>> +The RCC IP is both a reset and a clock controller.
>>> +
>>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>>> +Please also refer to reset.txt for common reset controller binding usage.
>>> +
>>> +Required properties:
>>> +- compatible: Should be:
>>> +  "st,stm32h743-rcc"
>>> +
>>> +- reg: should be register base and length as documented in the
>>> +  datasheet
>>> +
>>> +- #reset-cells: 1, see below
>>> +
>>> +- #clock-cells : from common clock binding; shall be set to 1
>>> +
>>> +- clocks: External oscillator clock phandle
>>> +  - high speed external clock signal (HSE)
>>> +  - low speed external clock signal (LSE)
>>> +  - external I2S clock (I2S_CKIN)
>>> +
>>> +Optional properties:
>>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>>> +  write protection (RTC clock).
>>> +
>>> +Example:
>>> +
>>> +	rcc: rcc@58024400 {
>> 'rcc' as a generic device node name is awkward.
>>
>> I believe the main function of the device is clock controller (unlikely
>> a generic reset controller can be converted into a clock controller),
>> the locations of the document and device driver also indicate that
>> primarily it is a clock controller, so I suggest to replace device node
>> name with 'clock-controller' like below:
> I prefer to keep rcc node name, to be coherent with the other ST 
> platforms (STM32F4/F7)

the thing is, a device node name is expected to comply with ePAPR or
the devicetree specification, which says

	The name of a node should be somewhat generic, reflecting
	the function of the device and not its precise programming model.

If devicetree and CCF maintainers are fine with 'rcc', I won't object,
my role is just to emphasize the found issue and recommend to use another
and more common name 'clock-controller', it is a simple and fortunately
backward compatible change to other ST platforms as well.

>> 	rcc: clock-controller@58024400 {
>>
>>> +		#reset-cells = <1>;
>>> +		#clock-cells = <2>
>> Missing trailing semicolon       ^^^
> ok

--
With best wishes,
Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Vladimir Zapolskiy]

Hi Gabriel,

On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> Hi Vladimir,
> 
> 
> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>> Hello Gabriel,
>>
>> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> This patch enables clocks for STM32H743 boards.
>>>
>>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> for MFD changes:
>>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>>
>>> for DT-Bindings
>>> Acked-by: Rob Herring <robh@kernel.org>
>>> ---
>>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
>> I'll provide some review comments about device tree bindings only.
>>
>>>   drivers/clk/Makefile                               |    1 +
>>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>>   5 files changed, 1793 insertions(+)
>>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>>
>>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> new file mode 100644
>>> index 0000000..442c50c
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> @@ -0,0 +1,82 @@
>>> +STMicroelectronics STM32H7 Reset and Clock Controller
>>> +=====================================================
>>> +
>>> +The RCC IP is both a reset and a clock controller.
>>> +
>>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>>> +Please also refer to reset.txt for common reset controller binding usage.
>>> +
>>> +Required properties:
>>> +- compatible: Should be:
>>> +  "st,stm32h743-rcc"
>>> +
>>> +- reg: should be register base and length as documented in the
>>> +  datasheet
>>> +
>>> +- #reset-cells: 1, see below
>>> +
>>> +- #clock-cells : from common clock binding; shall be set to 1
>>> +
>>> +- clocks: External oscillator clock phandle
>>> +  - high speed external clock signal (HSE)
>>> +  - low speed external clock signal (LSE)
>>> +  - external I2S clock (I2S_CKIN)
>>> +
>>> +Optional properties:
>>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>>> +  write protection (RTC clock).
>>> +
>>> +Example:
>>> +
>>> +	rcc: rcc@58024400 {
>> 'rcc' as a generic device node name is awkward.
>>
>> I believe the main function of the device is clock controller (unlikely
>> a generic reset controller can be converted into a clock controller),
>> the locations of the document and device driver also indicate that
>> primarily it is a clock controller, so I suggest to replace device node
>> name with 'clock-controller' like below:
> I prefer to keep rcc node name, to be coherent with the other ST 
> platforms (STM32F4/F7)

the thing is, a device node name is expected to comply with ePAPR or
the devicetree specification, which says

	The name of a node should be somewhat generic, reflecting
	the function of the device and not its precise programming model.

If devicetree and CCF maintainers are fine with 'rcc', I won't object,
my role is just to emphasize the found issue and recommend to use another
and more common name 'clock-controller', it is a simple and fortunately
backward compatible change to other ST platforms as well.

>> 	rcc: clock-controller@58024400 {
>>
>>> +		#reset-cells = <1>;
>>> +		#clock-cells = <2>
>> Missing trailing semicolon       ^^^
> ok

--
With best wishes,
Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Vladimir Zapolskiy]

Hi Gabriel,

On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> Hi Vladimir,
> 
> 
> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>> Hello Gabriel,
>>
>> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> This patch enables clocks for STM32H743 boards.
>>>
>>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> for MFD changes:
>>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>>
>>> for DT-Bindings
>>> Acked-by: Rob Herring <robh@kernel.org>
>>> ---
>>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
>> I'll provide some review comments about device tree bindings only.
>>
>>>   drivers/clk/Makefile                               |    1 +
>>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>>   5 files changed, 1793 insertions(+)
>>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>>
>>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> new file mode 100644
>>> index 0000000..442c50c
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> @@ -0,0 +1,82 @@
>>> +STMicroelectronics STM32H7 Reset and Clock Controller
>>> +=====================================================
>>> +
>>> +The RCC IP is both a reset and a clock controller.
>>> +
>>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>>> +Please also refer to reset.txt for common reset controller binding usage.
>>> +
>>> +Required properties:
>>> +- compatible: Should be:
>>> +  "st,stm32h743-rcc"
>>> +
>>> +- reg: should be register base and length as documented in the
>>> +  datasheet
>>> +
>>> +- #reset-cells: 1, see below
>>> +
>>> +- #clock-cells : from common clock binding; shall be set to 1
>>> +
>>> +- clocks: External oscillator clock phandle
>>> +  - high speed external clock signal (HSE)
>>> +  - low speed external clock signal (LSE)
>>> +  - external I2S clock (I2S_CKIN)
>>> +
>>> +Optional properties:
>>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>>> +  write protection (RTC clock).
>>> +
>>> +Example:
>>> +
>>> +	rcc: rcc@58024400 {
>> 'rcc' as a generic device node name is awkward.
>>
>> I believe the main function of the device is clock controller (unlikely
>> a generic reset controller can be converted into a clock controller),
>> the locations of the document and device driver also indicate that
>> primarily it is a clock controller, so I suggest to replace device node
>> name with 'clock-controller' like below:
> I prefer to keep rcc node name, to be coherent with the other ST 
> platforms (STM32F4/F7)

the thing is, a device node name is expected to comply with ePAPR or
the devicetree specification, which says

	The name of a node should be somewhat generic, reflecting
	the function of the device and not its precise programming model.

If devicetree and CCF maintainers are fine with 'rcc', I won't object,
my role is just to emphasize the found issue and recommend to use another
and more common name 'clock-controller', it is a simple and fortunately
backward compatible change to other ST platforms as well.

>> 	rcc: clock-controller@58024400 {
>>
>>> +		#reset-cells = <1>;
>>> +		#clock-cells = <2>
>> Missing trailing semicolon       ^^^
> ok

--
With best wishes,
Vladimir

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Vladimir Zapolskiy]

Hi Gabriel,

On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> Hi Vladimir,
> 
> 
> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>> Hello Gabriel,
>>
>> On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> This patch enables clocks for STM32H743 boards.
>>>
>>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>
>>> for MFD changes:
>>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>>
>>> for DT-Bindings
>>> Acked-by: Rob Herring <robh@kernel.org>
>>> ---
>>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
>> I'll provide some review comments about device tree bindings only.
>>
>>>   drivers/clk/Makefile                               |    1 +
>>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>>   5 files changed, 1793 insertions(+)
>>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>>
>>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> new file mode 100644
>>> index 0000000..442c50c
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>> @@ -0,0 +1,82 @@
>>> +STMicroelectronics STM32H7 Reset and Clock Controller
>>> +=====================================================
>>> +
>>> +The RCC IP is both a reset and a clock controller.
>>> +
>>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>>> +Please also refer to reset.txt for common reset controller binding usage.
>>> +
>>> +Required properties:
>>> +- compatible: Should be:
>>> +  "st,stm32h743-rcc"
>>> +
>>> +- reg: should be register base and length as documented in the
>>> +  datasheet
>>> +
>>> +- #reset-cells: 1, see below
>>> +
>>> +- #clock-cells : from common clock binding; shall be set to 1
>>> +
>>> +- clocks: External oscillator clock phandle
>>> +  - high speed external clock signal (HSE)
>>> +  - low speed external clock signal (LSE)
>>> +  - external I2S clock (I2S_CKIN)
>>> +
>>> +Optional properties:
>>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>>> +  write protection (RTC clock).
>>> +
>>> +Example:
>>> +
>>> +	rcc: rcc at 58024400 {
>> 'rcc' as a generic device node name is awkward.
>>
>> I believe the main function of the device is clock controller (unlikely
>> a generic reset controller can be converted into a clock controller),
>> the locations of the document and device driver also indicate that
>> primarily it is a clock controller, so I suggest to replace device node
>> name with 'clock-controller' like below:
> I prefer to keep rcc node name, to be coherent with the other ST 
> platforms (STM32F4/F7)

the thing is, a device node name is expected to comply with ePAPR or
the devicetree specification, which says

	The name of a node should be somewhat generic, reflecting
	the function of the device and not its precise programming model.

If devicetree and CCF maintainers are fine with 'rcc', I won't object,
my role is just to emphasize the found issue and recommend to use another
and more common name 'clock-controller', it is a simple and fortunately
backward compatible change to other ST platforms as well.

>> 	rcc: clock-controller at 58024400 {
>>
>>> +		#reset-cells = <1>;
>>> +		#clock-cells = <2>
>> Missing trailing semicolon       ^^^
> ok

--
With best wishes,
Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Stephen Boyd]

On 07/20, Vladimir Zapolskiy wrote:
> Hi Gabriel,
> 
> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> > Hi Vladimir,
> > 
> > 
> > On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> >> Hello Gabriel,
> >>
> >> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
> >>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> >>> +
> >>> +	rcc: rcc@58024400 {
> >> 'rcc' as a generic device node name is awkward.
> >>
> >> I believe the main function of the device is clock controller (unlikely
> >> a generic reset controller can be converted into a clock controller),
> >> the locations of the document and device driver also indicate that
> >> primarily it is a clock controller, so I suggest to replace device node
> >> name with 'clock-controller' like below:
> > I prefer to keep rcc node name, to be coherent with the other ST 
> > platforms (STM32F4/F7)
> 
> the thing is, a device node name is expected to comply with ePAPR or
> the devicetree specification, which says
> 
> 	The name of a node should be somewhat generic, reflecting
> 	the function of the device and not its precise programming model.
> 
> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
> my role is just to emphasize the found issue and recommend to use another
> and more common name 'clock-controller', it is a simple and fortunately
> backward compatible change to other ST platforms as well.

Yes. It should be generic so clock-controller or
clock-reset-controller is appropriate here.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Stephen Boyd]

On 07/20, Vladimir Zapolskiy wrote:
> Hi Gabriel,
> 
> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> > Hi Vladimir,
> > 
> > 
> > On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> >> Hello Gabriel,
> >>
> >> On 07/19/2017 05:25 PM, gabriel.fernandez-qxv4g6HH51o@public.gmane.org wrote:
> >>> From: Gabriel Fernandez <gabriel.fernandez-qxv4g6HH51o@public.gmane.org>
> >>> +
> >>> +	rcc: rcc@58024400 {
> >> 'rcc' as a generic device node name is awkward.
> >>
> >> I believe the main function of the device is clock controller (unlikely
> >> a generic reset controller can be converted into a clock controller),
> >> the locations of the document and device driver also indicate that
> >> primarily it is a clock controller, so I suggest to replace device node
> >> name with 'clock-controller' like below:
> > I prefer to keep rcc node name, to be coherent with the other ST 
> > platforms (STM32F4/F7)
> 
> the thing is, a device node name is expected to comply with ePAPR or
> the devicetree specification, which says
> 
> 	The name of a node should be somewhat generic, reflecting
> 	the function of the device and not its precise programming model.
> 
> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
> my role is just to emphasize the found issue and recommend to use another
> and more common name 'clock-controller', it is a simple and fortunately
> backward compatible change to other ST platforms as well.

Yes. It should be generic so clock-controller or
clock-reset-controller is appropriate here.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project
--
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Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Stephen Boyd]

On 07/20, Vladimir Zapolskiy wrote:
> Hi Gabriel,
> 
> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> > Hi Vladimir,
> > 
> > 
> > On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> >> Hello Gabriel,
> >>
> >> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
> >>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> >>> +
> >>> +	rcc: rcc@58024400 {
> >> 'rcc' as a generic device node name is awkward.
> >>
> >> I believe the main function of the device is clock controller (unlikely
> >> a generic reset controller can be converted into a clock controller),
> >> the locations of the document and device driver also indicate that
> >> primarily it is a clock controller, so I suggest to replace device node
> >> name with 'clock-controller' like below:
> > I prefer to keep rcc node name, to be coherent with the other ST 
> > platforms (STM32F4/F7)
> 
> the thing is, a device node name is expected to comply with ePAPR or
> the devicetree specification, which says
> 
> 	The name of a node should be somewhat generic, reflecting
> 	the function of the device and not its precise programming model.
> 
> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
> my role is just to emphasize the found issue and recommend to use another
> and more common name 'clock-controller', it is a simple and fortunately
> backward compatible change to other ST platforms as well.

Yes. It should be generic so clock-controller or
clock-reset-controller is appropriate here.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Stephen Boyd]

On 07/20, Vladimir Zapolskiy wrote:
> Hi Gabriel,
> 
> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
> > Hi Vladimir,
> > 
> > 
> > On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> >> Hello Gabriel,
> >>
> >> On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
> >>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
> >>> +
> >>> +	rcc: rcc at 58024400 {
> >> 'rcc' as a generic device node name is awkward.
> >>
> >> I believe the main function of the device is clock controller (unlikely
> >> a generic reset controller can be converted into a clock controller),
> >> the locations of the document and device driver also indicate that
> >> primarily it is a clock controller, so I suggest to replace device node
> >> name with 'clock-controller' like below:
> > I prefer to keep rcc node name, to be coherent with the other ST 
> > platforms (STM32F4/F7)
> 
> the thing is, a device node name is expected to comply with ePAPR or
> the devicetree specification, which says
> 
> 	The name of a node should be somewhat generic, reflecting
> 	the function of the device and not its precise programming model.
> 
> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
> my role is just to emphasize the found issue and recommend to use another
> and more common name 'clock-controller', it is a simple and fortunately
> backward compatible change to other ST platforms as well.

Yes. It should be generic so clock-controller or
clock-reset-controller is appropriate here.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

On 07/21/2017 10:37 PM, Stephen Boyd wrote:
> On 07/20, Vladimir Zapolskiy wrote:
>> Hi Gabriel,
>>
>> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
>>> Hi Vladimir,
>>>
>>>
>>> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>>>> Hello Gabriel,
>>>>
>>>> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>>>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>>> +
>>>>> +	rcc: rcc@58024400 {
>>>> 'rcc' as a generic device node name is awkward.
>>>>
>>>> I believe the main function of the device is clock controller (unlikely
>>>> a generic reset controller can be converted into a clock controller),
>>>> the locations of the document and device driver also indicate that
>>>> primarily it is a clock controller, so I suggest to replace device node
>>>> name with 'clock-controller' like below:
>>> I prefer to keep rcc node name, to be coherent with the other ST
>>> platforms (STM32F4/F7)
>> the thing is, a device node name is expected to comply with ePAPR or
>> the devicetree specification, which says
>>
>> 	The name of a node should be somewhat generic, reflecting
>> 	the function of the device and not its precise programming model.
>>
>> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
>> my role is just to emphasize the found issue and recommend to use another
>> and more common name 'clock-controller', it is a simple and fortunately
>> backward compatible change to other ST platforms as well.
> Yes. It should be generic so clock-controller or
> clock-reset-controller is appropriate here.
>
ok i will change order... reset-clock-controller name to match with rcc.

Best Regards
Gabriel

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain; charset="utf-8", Size: 1823 bytes --]



On 07/21/2017 10:37 PM, Stephen Boyd wrote:
> On 07/20, Vladimir Zapolskiy wrote:
>> Hi Gabriel,
>>
>> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
>>> Hi Vladimir,
>>>
>>>
>>> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>>>> Hello Gabriel,
>>>>
>>>> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>>>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>>> +
>>>>> +	rcc: rcc@58024400 {
>>>> 'rcc' as a generic device node name is awkward.
>>>>
>>>> I believe the main function of the device is clock controller (unlikely
>>>> a generic reset controller can be converted into a clock controller),
>>>> the locations of the document and device driver also indicate that
>>>> primarily it is a clock controller, so I suggest to replace device node
>>>> name with 'clock-controller' like below:
>>> I prefer to keep rcc node name, to be coherent with the other ST
>>> platforms (STM32F4/F7)
>> the thing is, a device node name is expected to comply with ePAPR or
>> the devicetree specification, which says
>>
>> 	The name of a node should be somewhat generic, reflecting
>> 	the function of the device and not its precise programming model.
>>
>> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
>> my role is just to emphasize the found issue and recommend to use another
>> and more common name 'clock-controller', it is a simple and fortunately
>> backward compatible change to other ST platforms as well.
> Yes. It should be generic so clock-controller or
> clock-reset-controller is appropriate here.
>
ok i will change order... reset-clock-controller name to match with rcc.

Best Regards
GabrielN‹§²æìr¸›yúèšØb²X¬¶Ç§vØ^–)Þº{.nÇ+‰·zøœzÚÞz)í…æèw*\x1fjg¬±¨\x1e¶‰šŽŠÝ¢j.ïÛ°\½½MŽúgjÌæa×\x02››–' ™©Þ¢¸\f¢·¦j:+v‰¨ŠwèjØm¶Ÿÿ¾\a«‘êçzZ+ƒùšŽŠÝ¢j"ú!¶i

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

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aCB3aXRoIHJjYy4NCg0KQmVzdCBSZWdhcmRzDQpHYWJyaWVs

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

On 07/21/2017 10:37 PM, Stephen Boyd wrote:
> On 07/20, Vladimir Zapolskiy wrote:
>> Hi Gabriel,
>>
>> On 07/20/2017 11:31 AM, Gabriel FERNANDEZ wrote:
>>> Hi Vladimir,
>>>
>>>
>>> On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
>>>> Hello Gabriel,
>>>>
>>>> On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
>>>>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>>>> +
>>>>> +	rcc: rcc at 58024400 {
>>>> 'rcc' as a generic device node name is awkward.
>>>>
>>>> I believe the main function of the device is clock controller (unlikely
>>>> a generic reset controller can be converted into a clock controller),
>>>> the locations of the document and device driver also indicate that
>>>> primarily it is a clock controller, so I suggest to replace device node
>>>> name with 'clock-controller' like below:
>>> I prefer to keep rcc node name, to be coherent with the other ST
>>> platforms (STM32F4/F7)
>> the thing is, a device node name is expected to comply with ePAPR or
>> the devicetree specification, which says
>>
>> 	The name of a node should be somewhat generic, reflecting
>> 	the function of the device and not its precise programming model.
>>
>> If devicetree and CCF maintainers are fine with 'rcc', I won't object,
>> my role is just to emphasize the found issue and recommend to use another
>> and more common name 'clock-controller', it is a simple and fortunately
>> backward compatible change to other ST platforms as well.
> Yes. It should be generic so clock-controller or
> clock-reset-controller is appropriate here.
>
ok i will change order... reset-clock-controller name to match with rcc.

Best Regards
Gabriel

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> Hello Gabriel,
>
> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> This patch enables clocks for STM32H743 boards.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> for MFD changes:
>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>
>> for DT-Bindings
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
> I'll provide some review comments about device tree bindings only.
>
>> Hi drivers/clk/Makefile                               |    1 +
>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>   5 files changed, 1793 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> new file mode 100644
>> index 0000000..442c50c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> @@ -0,0 +1,82 @@
>> +STMicroelectronics STM32H7 Reset and Clock Controller
>> +=====================================================
>> +
>> +The RCC IP is both a reset and a clock controller.
>> +
>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>> +Please also refer to reset.txt for common reset controller binding usage.
>> +
>> +Required properties:
>> +- compatible: Should be:
>> +  "st,stm32h743-rcc"
>> +
>> +- reg: should be register base and length as documented in the
>> +  datasheet
>> +
>> +- #reset-cells: 1, see below
>> +
>> +- #clock-cells : from common clock binding; shall be set to 1
>> +
>> +- clocks: External oscillator clock phandle
>> +  - high speed external clock signal (HSE)
>> +  - low speed external clock signal (LSE)
>> +  - external I2S clock (I2S_CKIN)
>> +
>> +Optional properties:
>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>> +  write protection (RTC clock).
>> +
>> +Example:
>> +
>> +	rcc: rcc@58024400 {
> 'rcc' as a generic device node name is awkward.
>
> I believe the main function of the device is clock controller (unlikely
> a generic reset controller can be converted into a clock controller),
> the locations of the document and device driver also indicate that
> primarily it is a clock controller, so I suggest to replace device node
> name with 'clock-controller' like below:
>
> 	rcc: clock-controller@58024400 {
>
>> +		#reset-cells = <1>;
>> +		#clock-cells = <2>
> Missing trailing semicolon       ^^^
>
> My recommendation is to move #reset-cells and #clock-cells properties
> down after 'reg' or 'clocks' property in the list.
>
>> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
>> +		reg = <0x58024400 0x400>;
>> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
>> +
>> +		st,syscfg = <&pwrcfg>;
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
> Please drop #address-cells and #size-cells properties completely, from
> the document the device node does not define any children subnodes.
>
>> +	};
>> +
>> +The peripheral clock consumer should specify the desired clock by
>> +having the clock ID in its "clocks" phandle cell.
>> +
>> +All available clocks are defined as preprocessor macros in
>> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
>> +tree sources.
>> +
>> +Example:
>> +
>> +		timer5: timer@40000c00 {
>> +			compatible = "st,stm32-timer";
>> +			reg = <0x40000c00 0x400>;
>> +			interrupts = <50>;
>> +			clocks = <&rcc TIM5_CK>;
>> +
> Please remote the empty line above.
>
>> +		};
>> +
>> +Specifying softreset control of devices
>> +=======================================
>> +
>> +Device nodes should specify the reset channel required in their "resets"
>> +property, containing a phandle to the reset device node and an index specifying
>> +which channel to use.
>> +The index is the bit number within the RCC registers bank, starting from RCC
>> +base address.
>> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
>> +Where bit_offset is the bit offset within the register.
>> +
>> +For example, for CRC reset:
>> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
>> +
>> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
> Double slashes ---------->                                           ^^^^
>
> I have doubts if it is permitted to add source paths into the device
> tree bindings documentation, because such information is specific to
> the Linux source code.
>
> Rob, can you clarify please?
i will suppress it, it's not a problem

Many Thanks Vladimir


>> +header and can be used in device tree sources.
>> +
>> +example:
> For unification, please capitalize it: 'Example:'
>
>> +
>> +	timer2 {
>> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
>> +	};
> --
> With best wishes,
> Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> Hello Gabriel,
>
> On 07/19/2017 05:25 PM, gabriel.fernandez@st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> This patch enables clocks for STM32H743 boards.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> for MFD changes:
>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>
>> for DT-Bindings
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
> I'll provide some review comments about device tree bindings only.
>
>> Hi drivers/clk/Makefile                               |    1 +
>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>   5 files changed, 1793 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> new file mode 100644
>> index 0000000..442c50c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> @@ -0,0 +1,82 @@
>> +STMicroelectronics STM32H7 Reset and Clock Controller
>> +=====================================================
>> +
>> +The RCC IP is both a reset and a clock controller.
>> +
>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>> +Please also refer to reset.txt for common reset controller binding usage.
>> +
>> +Required properties:
>> +- compatible: Should be:
>> +  "st,stm32h743-rcc"
>> +
>> +- reg: should be register base and length as documented in the
>> +  datasheet
>> +
>> +- #reset-cells: 1, see below
>> +
>> +- #clock-cells : from common clock binding; shall be set to 1
>> +
>> +- clocks: External oscillator clock phandle
>> +  - high speed external clock signal (HSE)
>> +  - low speed external clock signal (LSE)
>> +  - external I2S clock (I2S_CKIN)
>> +
>> +Optional properties:
>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>> +  write protection (RTC clock).
>> +
>> +Example:
>> +
>> +	rcc: rcc@58024400 {
> 'rcc' as a generic device node name is awkward.
>
> I believe the main function of the device is clock controller (unlikely
> a generic reset controller can be converted into a clock controller),
> the locations of the document and device driver also indicate that
> primarily it is a clock controller, so I suggest to replace device node
> name with 'clock-controller' like below:
>
> 	rcc: clock-controller@58024400 {
>
>> +		#reset-cells = <1>;
>> +		#clock-cells = <2>
> Missing trailing semicolon       ^^^
>
> My recommendation is to move #reset-cells and #clock-cells properties
> down after 'reg' or 'clocks' property in the list.
>
>> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
>> +		reg = <0x58024400 0x400>;
>> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
>> +
>> +		st,syscfg = <&pwrcfg>;
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
> Please drop #address-cells and #size-cells properties completely, from
> the document the device node does not define any children subnodes.
>
>> +	};
>> +
>> +The peripheral clock consumer should specify the desired clock by
>> +having the clock ID in its "clocks" phandle cell.
>> +
>> +All available clocks are defined as preprocessor macros in
>> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
>> +tree sources.
>> +
>> +Example:
>> +
>> +		timer5: timer@40000c00 {
>> +			compatible = "st,stm32-timer";
>> +			reg = <0x40000c00 0x400>;
>> +			interrupts = <50>;
>> +			clocks = <&rcc TIM5_CK>;
>> +
> Please remote the empty line above.
>
>> +		};
>> +
>> +Specifying softreset control of devices
>> +=======================================
>> +
>> +Device nodes should specify the reset channel required in their "resets"
>> +property, containing a phandle to the reset device node and an index specifying
>> +which channel to use.
>> +The index is the bit number within the RCC registers bank, starting from RCC
>> +base address.
>> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
>> +Where bit_offset is the bit offset within the register.
>> +
>> +For example, for CRC reset:
>> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
>> +
>> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
> Double slashes ---------->                                           ^^^^
>
> I have doubts if it is permitted to add source paths into the device
> tree bindings documentation, because such information is specific to
> the Linux source code.
>
> Rob, can you clarify please?
i will suppress it, it's not a problem

Many Thanks Vladimir


>> +header and can be used in device tree sources.
>> +
>> +example:
> For unification, please capitalize it: 'Example:'
>
>> +
>> +	timer2 {
>> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
>> +	};
> --
> With best wishes,
> Vladimir

Re: [PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

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bWlyDQo=

[PATCH v7 3/3] clk: stm32h7: Add stm32h743 clock driver

[Gabriel FERNANDEZ]

On 07/19/2017 11:20 PM, Vladimir Zapolskiy wrote:
> Hello Gabriel,
>
> On 07/19/2017 05:25 PM, gabriel.fernandez at st.com wrote:
>> From: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> This patch enables clocks for STM32H743 boards.
>>
>> Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
>>
>> for MFD changes:
>> Acked-by: Lee Jones <lee.jones@linaro.org>
>>
>> for DT-Bindings
>> Acked-by: Rob Herring <robh@kernel.org>
>> ---
>>   .../devicetree/bindings/clock/st,stm32h7-rcc.txt   |   82 ++
> I'll provide some review comments about device tree bindings only.
>
>> Hi drivers/clk/Makefile                               |    1 +
>>   drivers/clk/clk-stm32h7.c                          | 1409 ++++++++++++++++++++
>>   include/dt-bindings/clock/stm32h7-clks.h           |  165 +++
>>   include/dt-bindings/mfd/stm32h7-rcc.h              |  136 ++
>>   5 files changed, 1793 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>>   create mode 100644 drivers/clk/clk-stm32h7.c
>>   create mode 100644 include/dt-bindings/clock/stm32h7-clks.h
>>   create mode 100644 include/dt-bindings/mfd/stm32h7-rcc.h
>>
>> diff --git a/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> new file mode 100644
>> index 0000000..442c50c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/st,stm32h7-rcc.txt
>> @@ -0,0 +1,82 @@
>> +STMicroelectronics STM32H7 Reset and Clock Controller
>> +=====================================================
>> +
>> +The RCC IP is both a reset and a clock controller.
>> +
>> +Please refer to clock-bindings.txt for common clock controller binding usage.
>> +Please also refer to reset.txt for common reset controller binding usage.
>> +
>> +Required properties:
>> +- compatible: Should be:
>> +  "st,stm32h743-rcc"
>> +
>> +- reg: should be register base and length as documented in the
>> +  datasheet
>> +
>> +- #reset-cells: 1, see below
>> +
>> +- #clock-cells : from common clock binding; shall be set to 1
>> +
>> +- clocks: External oscillator clock phandle
>> +  - high speed external clock signal (HSE)
>> +  - low speed external clock signal (LSE)
>> +  - external I2S clock (I2S_CKIN)
>> +
>> +Optional properties:
>> +- st,syscfg: phandle for pwrcfg, mandatory to disable/enable backup domain
>> +  write protection (RTC clock).
>> +
>> +Example:
>> +
>> +	rcc: rcc at 58024400 {
> 'rcc' as a generic device node name is awkward.
>
> I believe the main function of the device is clock controller (unlikely
> a generic reset controller can be converted into a clock controller),
> the locations of the document and device driver also indicate that
> primarily it is a clock controller, so I suggest to replace device node
> name with 'clock-controller' like below:
>
> 	rcc: clock-controller at 58024400 {
>
>> +		#reset-cells = <1>;
>> +		#clock-cells = <2>
> Missing trailing semicolon       ^^^
>
> My recommendation is to move #reset-cells and #clock-cells properties
> down after 'reg' or 'clocks' property in the list.
>
>> +		compatible = "st,stm32h743-rcc", "st,stm32-rcc";
>> +		reg = <0x58024400 0x400>;
>> +		clocks = <&clk_hse>, <&clk_lse>, <&clk_i2s_ckin>;
>> +
>> +		st,syscfg = <&pwrcfg>;
>> +
>> +		#address-cells = <1>;
>> +		#size-cells = <0>;
> Please drop #address-cells and #size-cells properties completely, from
> the document the device node does not define any children subnodes.
>
>> +	};
>> +
>> +The peripheral clock consumer should specify the desired clock by
>> +having the clock ID in its "clocks" phandle cell.
>> +
>> +All available clocks are defined as preprocessor macros in
>> +dt-bindings/clock/stm32h7-clks.h header and can be used in device
>> +tree sources.
>> +
>> +Example:
>> +
>> +		timer5: timer at 40000c00 {
>> +			compatible = "st,stm32-timer";
>> +			reg = <0x40000c00 0x400>;
>> +			interrupts = <50>;
>> +			clocks = <&rcc TIM5_CK>;
>> +
> Please remote the empty line above.
>
>> +		};
>> +
>> +Specifying softreset control of devices
>> +=======================================
>> +
>> +Device nodes should specify the reset channel required in their "resets"
>> +property, containing a phandle to the reset device node and an index specifying
>> +which channel to use.
>> +The index is the bit number within the RCC registers bank, starting from RCC
>> +base address.
>> +It is calculated as: index = register_offset / 4 * 32 + bit_offset.
>> +Where bit_offset is the bit offset within the register.
>> +
>> +For example, for CRC reset:
>> +  crc = AHB4RSTR_offset / 4 * 32 + CRCRST_bit_offset = 0x88 / 4 * 32 + 19 = 1107
>> +
>> +All available preprocessor macros for reset are defined dt-bindings//mfd/stm32h7-rcc.h
> Double slashes ---------->                                           ^^^^
>
> I have doubts if it is permitted to add source paths into the device
> tree bindings documentation, because such information is specific to
> the Linux source code.
>
> Rob, can you clarify please?
i will suppress it, it's not a problem

Many Thanks Vladimir


>> +header and can be used in device tree sources.
>> +
>> +example:
> For unification, please capitalize it: 'Example:'
>
>> +
>> +	timer2 {
>> +		resets	= <&rcc STM32H7_APB1L_RESET(TIM2)>;
>> +	};
> --
> With best wishes,
> Vladimir