[PATCH v2 0/3] Add MediaTek MT8365 I2C support

[PATCH v2 0/3] Add MediaTek MT8365 I2C support

[Alexandre Mergnat]

Hi,
This patch series adds I2C support for MT8365-EVK board.
The I2C-0 is enabled, it can be used through the board pin header,
as described directly on the PCB.

This series depends to another one which add support for
MT8365 SoC and EVK board. Link [1]

One patch has been cherry-picked from [2], so I've addressed the comment
and kept the trailer.

Regards,
Alex

[1]: https://lore.kernel.org/linux-mediatek/20230101220149.3035048-1-bero@baylibre.com/
[2]: https://lore.kernel.org/all/20220531135026.238475-2-fparent@baylibre.com/

To: Qii Wang <qii.wang@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
To: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-i2c@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: Fabien Parent <fparent@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
Changes in v2:
- Drop the patch which do useless change in i2c-mt65xx.c driver.
- Change 2 lines compatible/reg in oneline.
- Link to v1: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v1-0-4aeb7c54c67b@baylibre.com

---
Alexandre Mergnat (2):
      arm64: dts: mediatek: add i2c support for mt8365 SoC
      arm64: dts: mediatek: enable i2c0 for mt8365-evk board

Fabien Parent (1):
      dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

 .../devicetree/bindings/i2c/i2c-mt65xx.yaml        |  4 ++
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts        | 19 ++++++++
 arch/arm64/boot/dts/mediatek/mt8365.dtsi           | 52 ++++++++++++++++++++++
 3 files changed, 75 insertions(+)
---
base-commit: 8b6cfcce3ce939db11166680a57253c39110f07e
change-id: 20221122-mt8365-i2c-support-fc048da261ea

Best regards,
-- 
Alexandre Mergnat <amergnat@baylibre.com>

[PATCH v2 0/3] Add MediaTek MT8365 I2C support

[Alexandre Mergnat]

Hi,
This patch series adds I2C support for MT8365-EVK board.
The I2C-0 is enabled, it can be used through the board pin header,
as described directly on the PCB.

This series depends to another one which add support for
MT8365 SoC and EVK board. Link [1]

One patch has been cherry-picked from [2], so I've addressed the comment
and kept the trailer.

Regards,
Alex

[1]: https://lore.kernel.org/linux-mediatek/20230101220149.3035048-1-bero@baylibre.com/
[2]: https://lore.kernel.org/all/20220531135026.238475-2-fparent@baylibre.com/

To: Qii Wang <qii.wang@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
To: Matthias Brugger <matthias.bgg@gmail.com>
Cc: linux-i2c@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: Fabien Parent <fparent@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
Changes in v2:
- Drop the patch which do useless change in i2c-mt65xx.c driver.
- Change 2 lines compatible/reg in oneline.
- Link to v1: https://lore.kernel.org/r/20221122-mt8365-i2c-support-v1-0-4aeb7c54c67b@baylibre.com

---
Alexandre Mergnat (2):
      arm64: dts: mediatek: add i2c support for mt8365 SoC
      arm64: dts: mediatek: enable i2c0 for mt8365-evk board

Fabien Parent (1):
      dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

 .../devicetree/bindings/i2c/i2c-mt65xx.yaml        |  4 ++
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts        | 19 ++++++++
 arch/arm64/boot/dts/mediatek/mt8365.dtsi           | 52 ++++++++++++++++++++++
 3 files changed, 75 insertions(+)
---
base-commit: 8b6cfcce3ce939db11166680a57253c39110f07e
change-id: 20221122-mt8365-i2c-support-fc048da261ea

Best regards,
-- 
Alexandre Mergnat <amergnat@baylibre.com>

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

[PATCH v2 1/3] dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

[Alexandre Mergnat]

From: Fabien Parent <fparent@baylibre.com>

Add binding documentation for the MT8365 I2C controllers.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
index 421563bf576c..72ae2e01cf22 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
@@ -41,6 +41,10 @@ properties:
               - mediatek,mt6797-i2c
               - mediatek,mt7623-i2c
           - const: mediatek,mt6577-i2c
+      - items:
+          - enum:
+              - mediatek,mt8365-i2c
+          - const: mediatek,mt8168-i2c
       - items:
           - enum:
               - mediatek,mt8195-i2c

-- 
b4 0.10.1

[PATCH v2 1/3] dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

[Alexandre Mergnat]

From: Fabien Parent <fparent@baylibre.com>

Add binding documentation for the MT8365 I2C controllers.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
index 421563bf576c..72ae2e01cf22 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
@@ -41,6 +41,10 @@ properties:
               - mediatek,mt6797-i2c
               - mediatek,mt7623-i2c
           - const: mediatek,mt6577-i2c
+      - items:
+          - enum:
+              - mediatek,mt8365-i2c
+          - const: mediatek,mt8168-i2c
       - items:
           - enum:
               - mediatek,mt8195-i2c

-- 
b4 0.10.1

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[PATCH v2 2/3] arm64: dts: mediatek: add i2c support for mt8365 SoC

[Alexandre Mergnat]

There are four I2C master channels in MT8365 with a same HW architecture.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 52 ++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index a32f2b7507be..013beb50b4aa 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -282,6 +282,58 @@ pwm: pwm@11006000 {
 			clock-names = "top", "main", "pwm1", "pwm2", "pwm3";
 		};
 
+		i2c0: i2c@11007000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11007000 0 0xa0>, <0 0x11000080 0 0x80>;
+			interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C0_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@11008000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11008000 0 0xa0>, <0 0x11000100 0 0x80>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C1_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@11009000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11009000 0 0xa0>, <0 0x11000180 0 0x80>;
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C2_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c3: i2c@1100f000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x1100f000 0 0xa0>, <0 0x11000200 0 0x80>;
+			interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C3_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		spi: spi@1100a000 {
 			compatible = "mediatek,mt8365-spi", "mediatek,mt7622-spi";
 			reg = <0 0x1100a000 0 0x100>;

-- 
b4 0.10.1

[PATCH v2 2/3] arm64: dts: mediatek: add i2c support for mt8365 SoC

[Alexandre Mergnat]

There are four I2C master channels in MT8365 with a same HW architecture.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365.dtsi | 52 ++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365.dtsi b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
index a32f2b7507be..013beb50b4aa 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8365.dtsi
@@ -282,6 +282,58 @@ pwm: pwm@11006000 {
 			clock-names = "top", "main", "pwm1", "pwm2", "pwm3";
 		};
 
+		i2c0: i2c@11007000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11007000 0 0xa0>, <0 0x11000080 0 0x80>;
+			interrupts = <GIC_SPI 28 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C0_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@11008000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11008000 0 0xa0>, <0 0x11000100 0 0x80>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C1_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@11009000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x11009000 0 0xa0>, <0 0x11000180 0 0x80>;
+			interrupts = <GIC_SPI 30 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C2_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c3: i2c@1100f000 {
+			compatible = "mediatek,mt8365-i2c", "mediatek,mt8168-i2c";
+			reg = <0 0x1100f000 0 0xa0>, <0 0x11000200 0 0x80>;
+			interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_LOW>;
+			clock-div = <1>;
+			clocks = <&infracfg CLK_IFR_I2C3_AXI>,
+				 <&infracfg CLK_IFR_AP_DMA>;
+			clock-names = "main", "dma";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		spi: spi@1100a000 {
 			compatible = "mediatek,mt8365-spi", "mediatek,mt7622-spi";
 			reg = <0 0x1100a000 0 0x100>;

-- 
b4 0.10.1

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[PATCH v2 3/3] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[Alexandre Mergnat]

Enable the I2C0 bus provides communication with:
- The integrated RT9466 Switching Battery Charger.
- The integrated MT6691 LP4X buck for VDDQ.
- The integrated MT6691 LP4X buck for VDD2.
- The pin header, to plug external I2C devices.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 275ea3a0e708..d5d76a7dbd82 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -88,6 +88,15 @@ optee_reserved: optee@43200000 {
 	};
 };
 
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+};
+
 &pio {
 	gpio_keys: gpio-keys-pins {
 		pins {
@@ -97,6 +106,16 @@ pins {
 		};
 	};
 
+	i2c0_pins: i2c0 {
+		pins_i2c {
+			pinmux = <MT8365_PIN_57_SDA0__FUNC_SDA0_0>,
+				 <MT8365_PIN_58_SCL0__FUNC_SCL0_0>;
+			mediatek,pull-up-adv = <3>;
+			mediatek,drive-strength-adv = <00>;
+			bias-pull-up;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		pins {
 			pinmux = <MT8365_PIN_35_URXD0__FUNC_URXD0>,

-- 
b4 0.10.1

[PATCH v2 3/3] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

[Alexandre Mergnat]

Enable the I2C0 bus provides communication with:
- The integrated RT9466 Switching Battery Charger.
- The integrated MT6691 LP4X buck for VDDQ.
- The integrated MT6691 LP4X buck for VDD2.
- The pin header, to plug external I2C devices.

Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 275ea3a0e708..d5d76a7dbd82 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -88,6 +88,15 @@ optee_reserved: optee@43200000 {
 	};
 };
 
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+};
+
 &pio {
 	gpio_keys: gpio-keys-pins {
 		pins {
@@ -97,6 +106,16 @@ pins {
 		};
 	};
 
+	i2c0_pins: i2c0 {
+		pins_i2c {
+			pinmux = <MT8365_PIN_57_SDA0__FUNC_SDA0_0>,
+				 <MT8365_PIN_58_SCL0__FUNC_SCL0_0>;
+			mediatek,pull-up-adv = <3>;
+			mediatek,drive-strength-adv = <00>;
+			bias-pull-up;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		pins {
 			pinmux = <MT8365_PIN_35_URXD0__FUNC_URXD0>,

-- 
b4 0.10.1

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Re: [PATCH v2 1/3] dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

[Matthias Brugger]

On 19/01/2023 18:08, Alexandre Mergnat wrote:
> From: Fabien Parent <fparent@baylibre.com>
> 
> Add binding documentation for the MT8365 I2C controllers.
> 
> Signed-off-by: Fabien Parent <fparent@baylibre.com>
> Acked-by: Rob Herring <robh@kernel.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>   Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> index 421563bf576c..72ae2e01cf22 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> +++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> @@ -41,6 +41,10 @@ properties:
>                 - mediatek,mt6797-i2c
>                 - mediatek,mt7623-i2c
>             - const: mediatek,mt6577-i2c
> +      - items:
> +          - enum:
> +              - mediatek,mt8365-i2c
> +          - const: mediatek,mt8168-i2c
>         - items:
>             - enum:
>                 - mediatek,mt8195-i2c
> 

Re: [PATCH v2 1/3] dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

[Matthias Brugger]

On 19/01/2023 18:08, Alexandre Mergnat wrote:
> From: Fabien Parent <fparent@baylibre.com>
> 
> Add binding documentation for the MT8365 I2C controllers.
> 
> Signed-off-by: Fabien Parent <fparent@baylibre.com>
> Acked-by: Rob Herring <robh@kernel.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>

Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>

> ---
>   Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> index 421563bf576c..72ae2e01cf22 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> +++ b/Documentation/devicetree/bindings/i2c/i2c-mt65xx.yaml
> @@ -41,6 +41,10 @@ properties:
>                 - mediatek,mt6797-i2c
>                 - mediatek,mt7623-i2c
>             - const: mediatek,mt6577-i2c
> +      - items:
> +          - enum:
> +              - mediatek,mt8365-i2c
> +          - const: mediatek,mt8168-i2c
>         - items:
>             - enum:
>                 - mediatek,mt8195-i2c
> 

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Re: [PATCH v2 1/3] dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

[Wolfram Sang]

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On Thu, Jan 19, 2023 at 06:08:52PM +0100, Alexandre Mergnat wrote:
> From: Fabien Parent <fparent@baylibre.com>
> 
> Add binding documentation for the MT8365 I2C controllers.
> 
> Signed-off-by: Fabien Parent <fparent@baylibre.com>
> Acked-by: Rob Herring <robh@kernel.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>

Applied to for-next, thanks!


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Re: [PATCH v2 1/3] dt-bindings: i2c: i2c-mt65xx: add binding for MT8365 SoC

[Wolfram Sang]

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On Thu, Jan 19, 2023 at 06:08:52PM +0100, Alexandre Mergnat wrote:
> From: Fabien Parent <fparent@baylibre.com>
> 
> Add binding documentation for the MT8365 I2C controllers.
> 
> Signed-off-by: Fabien Parent <fparent@baylibre.com>
> Acked-by: Rob Herring <robh@kernel.org>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
> Signed-off-by: Alexandre Mergnat <amergnat@baylibre.com>

Applied to for-next, thanks!


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