[PATCH 0/2] arm64: dts: renesas: r8a779h0/gray-hawk-single: Add I2C and EEPROM support

[PATCH 0/2] arm64: dts: renesas: r8a779h0/gray-hawk-single: Add I2C and EEPROM support

[Geert Uytterhoeven]

	Hi all,

This patch series adds I2C support for the Renesas R-Car V4M (R8A779H0)
Soc, and I2C0 and board ID EEPROM support for the Gray Hawk Single
development board.

I intend to queue this in renesas-devel for v6.9.

Thanks for your comments!

Geert Uytterhoeven (1):
  arm64: dts: renesas: gray-hawk-single: Add I2C0 and EEPROMs

Hai Pham (1):
  arm64: dts: renesas: r8a779h0: Add I2C nodes

 .../dts/renesas/r8a779h0-gray-hawk-single.dts | 41 ++++++++++++++
 arch/arm64/boot/dts/renesas/r8a779h0.dtsi     | 56 +++++++++++++++++++
 2 files changed, 97 insertions(+)

-- 
2.34.1

Gr{oetje,eeting}s,

						Geert

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

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

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[PATCH 0/2] arm64: dts: renesas: r8a779h0/gray-hawk-single: Add I2C and EEPROM support

[Geert Uytterhoeven]

	Hi all,

This patch series adds I2C support for the Renesas R-Car V4M (R8A779H0)
Soc, and I2C0 and board ID EEPROM support for the Gray Hawk Single
development board.

I intend to queue this in renesas-devel for v6.9.

Thanks for your comments!

Geert Uytterhoeven (1):
  arm64: dts: renesas: gray-hawk-single: Add I2C0 and EEPROMs

Hai Pham (1):
  arm64: dts: renesas: r8a779h0: Add I2C nodes

 .../dts/renesas/r8a779h0-gray-hawk-single.dts | 41 ++++++++++++++
 arch/arm64/boot/dts/renesas/r8a779h0.dtsi     | 56 +++++++++++++++++++
 2 files changed, 97 insertions(+)

-- 
2.34.1

Gr{oetje,eeting}s,

						Geert

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

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

[PATCH 1/2] arm64: dts: renesas: r8a779h0: Add I2C nodes

[Geert Uytterhoeven]

From: Hai Pham <hai.pham.ud@renesas.com>

Add device nodes for the I2C Bus Interfaces on the Renesas R-Car V4M
(R8A779H0) SoC.

Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Changes compared to the BSP:
  - Incorporate i2c2 fix from "arm64: dts: renesas: r8a779h0: Sort IPMMU driver nodes".
---
 arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 56 +++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
index f5a688e300d29a73..8121aadaf6999429 100644
--- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
@@ -99,6 +99,62 @@ sysc: system-controller@e6180000 {
 			#power-domain-cells = <1>;
 		};
 
+		i2c0: i2c@e6500000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe6500000 0 0x40>;
+			interrupts = <GIC_SPI 610 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 518>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 518>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@e6508000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe6508000 0 0x40>;
+			interrupts = <GIC_SPI 611 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 519>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 519>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@e6510000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe6510000 0 0x40>;
+			interrupts = <GIC_SPI 612 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 520>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 520>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c3: i2c@e66d0000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe66d0000 0 0x40>;
+			interrupts = <GIC_SPI 613 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 521>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 521>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		hscif0: serial@e6540000 {
 			compatible = "renesas,hscif-r8a779h0",
 				     "renesas,rcar-gen4-hscif", "renesas,hscif";
-- 
2.34.1


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[PATCH 1/2] arm64: dts: renesas: r8a779h0: Add I2C nodes

[Geert Uytterhoeven]

From: Hai Pham <hai.pham.ud@renesas.com>

Add device nodes for the I2C Bus Interfaces on the Renesas R-Car V4M
(R8A779H0) SoC.

Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Changes compared to the BSP:
  - Incorporate i2c2 fix from "arm64: dts: renesas: r8a779h0: Sort IPMMU driver nodes".
---
 arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 56 +++++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
index f5a688e300d29a73..8121aadaf6999429 100644
--- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
@@ -99,6 +99,62 @@ sysc: system-controller@e6180000 {
 			#power-domain-cells = <1>;
 		};
 
+		i2c0: i2c@e6500000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe6500000 0 0x40>;
+			interrupts = <GIC_SPI 610 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 518>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 518>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@e6508000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe6508000 0 0x40>;
+			interrupts = <GIC_SPI 611 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 519>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 519>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@e6510000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe6510000 0 0x40>;
+			interrupts = <GIC_SPI 612 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 520>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 520>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c3: i2c@e66d0000 {
+			compatible = "renesas,i2c-r8a779h0",
+				     "renesas,rcar-gen4-i2c";
+			reg = <0 0xe66d0000 0 0x40>;
+			interrupts = <GIC_SPI 613 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&cpg CPG_MOD 521>;
+			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
+			resets = <&cpg 521>;
+			i2c-scl-internal-delay-ns = <110>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		hscif0: serial@e6540000 {
 			compatible = "renesas,hscif-r8a779h0",
 				     "renesas,rcar-gen4-hscif", "renesas,hscif";
-- 
2.34.1

[PATCH 2/2] arm64: dts: renesas: gray-hawk-single: Add I2C0 and EEPROMs

[Geert Uytterhoeven]

Enable the I2C0 bus on the Gray Hawk Single board, and describe the I2C
EEPROMs present.

Based on patches for Gray Hawk in the BSP by Hai Pham.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
The Gray Hawk Single documentation does not mention the purpose of the
I2C EEPROMs, but the schematics label the last two as "Board ID".
The labels match the corresponding EEPROMs on the White Hawk CPU and
BreakOut board stack, from which the Gray Hawk Single board is derived.
---
 .../dts/renesas/r8a779h0-gray-hawk-single.dts | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
index 1c84fe7171d3fd85..1bee27b2284d2eee 100644
--- a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
@@ -50,6 +50,42 @@ &hscif0 {
 	status = "okay";
 };
 
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	eeprom@50 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "cpu-board";
+		reg = <0x50>;
+		pagesize = <8>;
+	};
+
+	eeprom@51 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "breakout-board";
+		reg = <0x51>;
+		pagesize = <8>;
+	};
+
+	eeprom@52 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "csi-dsi-sub-board-id";
+		reg = <0x52>;
+		pagesize = <8>;
+	};
+
+	eeprom@53 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "ethernet-sub-board-id";
+		reg = <0x53>;
+		pagesize = <8>;
+	};
+};
+
 &pfc {
 	pinctrl-0 = <&scif_clk_pins>;
 	pinctrl-names = "default";
@@ -59,6 +95,11 @@ hscif0_pins: hscif0 {
 		function = "hscif0";
 	};
 
+	i2c0_pins: i2c0 {
+		groups = "i2c0";
+		function = "i2c0";
+	};
+
 	scif_clk_pins: scif_clk {
 		groups = "scif_clk";
 		function = "scif_clk";
-- 
2.34.1


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[PATCH 2/2] arm64: dts: renesas: gray-hawk-single: Add I2C0 and EEPROMs

[Geert Uytterhoeven]

Enable the I2C0 bus on the Gray Hawk Single board, and describe the I2C
EEPROMs present.

Based on patches for Gray Hawk in the BSP by Hai Pham.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
The Gray Hawk Single documentation does not mention the purpose of the
I2C EEPROMs, but the schematics label the last two as "Board ID".
The labels match the corresponding EEPROMs on the White Hawk CPU and
BreakOut board stack, from which the Gray Hawk Single board is derived.
---
 .../dts/renesas/r8a779h0-gray-hawk-single.dts | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
index 1c84fe7171d3fd85..1bee27b2284d2eee 100644
--- a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
@@ -50,6 +50,42 @@ &hscif0 {
 	status = "okay";
 };
 
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	eeprom@50 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "cpu-board";
+		reg = <0x50>;
+		pagesize = <8>;
+	};
+
+	eeprom@51 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "breakout-board";
+		reg = <0x51>;
+		pagesize = <8>;
+	};
+
+	eeprom@52 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "csi-dsi-sub-board-id";
+		reg = <0x52>;
+		pagesize = <8>;
+	};
+
+	eeprom@53 {
+		compatible = "rohm,br24g01", "atmel,24c01";
+		label = "ethernet-sub-board-id";
+		reg = <0x53>;
+		pagesize = <8>;
+	};
+};
+
 &pfc {
 	pinctrl-0 = <&scif_clk_pins>;
 	pinctrl-names = "default";
@@ -59,6 +95,11 @@ hscif0_pins: hscif0 {
 		function = "hscif0";
 	};
 
+	i2c0_pins: i2c0 {
+		groups = "i2c0";
+		function = "i2c0";
+	};
+
 	scif_clk_pins: scif_clk {
 		groups = "scif_clk";
 		function = "scif_clk";
-- 
2.34.1

Re: [PATCH 1/2] arm64: dts: renesas: r8a779h0: Add I2C nodes

[Wolfram Sang]

[-- Attachment #1.1: Type: text/plain, Size: 527 bytes --]

On Thu, Feb 01, 2024 at 03:14:33PM +0100, Geert Uytterhoeven wrote:
> From: Hai Pham <hai.pham.ud@renesas.com>
> 
> Add device nodes for the I2C Bus Interfaces on the Renesas R-Car V4M
> (R8A779H0) SoC.
> 
> Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

So far so good...

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

I assume DMA nodes are not there yet because you use these nodes for
testing DMA when you enable the DMACs?


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Re: [PATCH 1/2] arm64: dts: renesas: r8a779h0: Add I2C nodes

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 527 bytes --]

On Thu, Feb 01, 2024 at 03:14:33PM +0100, Geert Uytterhoeven wrote:
> From: Hai Pham <hai.pham.ud@renesas.com>
> 
> Add device nodes for the I2C Bus Interfaces on the Renesas R-Car V4M
> (R8A779H0) SoC.
> 
> Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

So far so good...

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

I assume DMA nodes are not there yet because you use these nodes for
testing DMA when you enable the DMACs?


[-- Attachment #2: signature.asc --]
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Re: [PATCH 2/2] arm64: dts: renesas: gray-hawk-single: Add I2C0 and EEPROMs

[Wolfram Sang]

[-- Attachment #1: Type: text/plain, Size: 359 bytes --]

On Thu, Feb 01, 2024 at 03:14:34PM +0100, Geert Uytterhoeven wrote:
> Enable the I2C0 bus on the Gray Hawk Single board, and describe the I2C
> EEPROMs present.
> 
> Based on patches for Gray Hawk in the BSP by Hai Pham.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>


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Re: [PATCH 2/2] arm64: dts: renesas: gray-hawk-single: Add I2C0 and EEPROMs

[Wolfram Sang]

[-- Attachment #1.1: Type: text/plain, Size: 359 bytes --]

On Thu, Feb 01, 2024 at 03:14:34PM +0100, Geert Uytterhoeven wrote:
> Enable the I2C0 bus on the Gray Hawk Single board, and describe the I2C
> EEPROMs present.
> 
> Based on patches for Gray Hawk in the BSP by Hai Pham.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>


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Re: [PATCH 1/2] arm64: dts: renesas: r8a779h0: Add I2C nodes

[Geert Uytterhoeven]

Hi Wolfram,

On Sat, Feb 3, 2024 at 6:52 PM Wolfram Sang <wsa@kernel.org> wrote:
> On Thu, Feb 01, 2024 at 03:14:33PM +0100, Geert Uytterhoeven wrote:
> > From: Hai Pham <hai.pham.ud@renesas.com>
> >
> > Add device nodes for the I2C Bus Interfaces on the Renesas R-Car V4M
> > (R8A779H0) SoC.
> >
> > Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
> > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>
> So far so good...
>
> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Thanks!

> I assume DMA nodes are not there yet because you use these nodes for
> testing DMA when you enable the DMACs?

Indeed, DMAC support is not yet included.

Gr{oetje,eeting}s,

                        Geert

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

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

Re: [PATCH 1/2] arm64: dts: renesas: r8a779h0: Add I2C nodes

[Geert Uytterhoeven]

Hi Wolfram,

On Sat, Feb 3, 2024 at 6:52 PM Wolfram Sang <wsa@kernel.org> wrote:
> On Thu, Feb 01, 2024 at 03:14:33PM +0100, Geert Uytterhoeven wrote:
> > From: Hai Pham <hai.pham.ud@renesas.com>
> >
> > Add device nodes for the I2C Bus Interfaces on the Renesas R-Car V4M
> > (R8A779H0) SoC.
> >
> > Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
> > Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
>
> So far so good...
>
> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Thanks!

> I assume DMA nodes are not there yet because you use these nodes for
> testing DMA when you enable the DMACs?

Indeed, DMAC support is not yet included.

Gr{oetje,eeting}s,

                        Geert

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

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

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