linux-kernel - Re: [PATCH 2/6] arm64: dts: imx943-evk: add lpi2c support

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Message-ID: <aCt8F+idwMI6OggH@lizhi-Precision-Tower-5810>
Date: Mon, 19 May 2025 14:44:39 -0400
From: Frank Li <Frank.li@....com>
To: Shengjiu Wang <shengjiu.wang@....com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
	festevam@...il.com, devicetree@...r.kernel.org, imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	shengjiu.wang@...il.com, carlos.song@....com
Subject: Re: [PATCH 2/6] arm64: dts: imx943-evk: add lpi2c support

On Thu, May 15, 2025 at 01:18:56PM +0800, Shengjiu Wang wrote:
> From: Carlos Song <carlos.song@....com>
>
> Add lpi2c and i2c-mux support for imx943 evk board.
>
> Signed-off-by: Carlos Song <carlos.song@....com>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> ---

Reviewed-by: Frank Li <Frank.Li@....com>

>  arch/arm64/boot/dts/freescale/imx943-evk.dts | 132 +++++++++++++++++++
>  1 file changed, 132 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
> index cc8f3e6a1789..a566b9d8b813 100644
> --- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
> @@ -12,6 +12,9 @@ / {
>  	model = "NXP i.MX943 EVK board";
>
>  	aliases {
> +		i2c2 = &lpi2c3;
> +		i2c3 = &lpi2c4;
> +		i2c5 = &lpi2c6;
>  		mmc0 = &usdhc1;
>  		mmc1 = &usdhc2;
>  		serial0 = &lpuart1;
> @@ -53,6 +56,113 @@ memory@...00000 {
>  	};
>  };
>
> +&lpi2c3 {
> +	clock-frequency = <400000>;
> +	pinctrl-0 = <&pinctrl_lpi2c3>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +
> +	pca9548_i2c3: i2c-mux@77 {
> +		compatible = "nxp,pca9548";
> +		reg = <0x77>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		i2c@0 {
> +			reg = <0>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@1 {
> +			reg = <1>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@2 {
> +			reg = <2>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@3 {
> +			reg = <3>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@4 {
> +			reg = <4>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@5 {
> +			reg = <5>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@6 {
> +			reg = <6>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@7 {
> +			reg = <7>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +	};
> +};
> +
> +&lpi2c4 {
> +	clock-frequency = <400000>;
> +	pinctrl-0 = <&pinctrl_lpi2c4>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +};
> +
> +&lpi2c6 {
> +	clock-frequency = <400000>;
> +	pinctrl-0 = <&pinctrl_lpi2c6>;
> +	pinctrl-names = "default";
> +	status = "okay";
> +
> +	pca9544_i2c6: i2c-mux@77 {
> +		compatible = "nxp,pca9544";
> +		reg = <0x77>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
> +		i2c@0 {
> +			reg = <0>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@1 {
> +			reg = <1>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@2 {
> +			reg = <2>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
> +		i2c@3 {
> +			reg = <3>;
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +	};
> +};
> +
>  &lpuart1 {
>  	pinctrl-0 = <&pinctrl_uart1>;
>  	pinctrl-names = "default";
> @@ -60,6 +170,28 @@ &lpuart1 {
>  };
>
>  &scmi_iomuxc {
> +
> +	pinctrl_lpi2c3: lpi2c3grp {
> +		fsl,pins = <
> +			IMX94_PAD_GPIO_IO16__LPI2C3_SDA		0x40000b9e
> +			IMX94_PAD_GPIO_IO17__LPI2C3_SCL		0x40000b9e
> +		>;
> +	};
> +
> +	pinctrl_lpi2c4: lpi2c4grp {
> +		fsl,pins = <
> +			IMX94_PAD_GPIO_IO18__LPI2C4_SDA		0x40000b9e
> +			IMX94_PAD_GPIO_IO19__LPI2C4_SCL		0x40000b9e
> +		>;
> +	};
> +
> +	pinctrl_lpi2c6: lpi2c6grp {
> +		fsl,pins = <
> +			IMX94_PAD_GPIO_IO29__LPI2C6_SDA		0x40000b9e
> +			IMX94_PAD_GPIO_IO28__LPI2C6_SCL		0x40000b9e
> +		>;
> +	};
> +
>  	pinctrl_uart1: uart1grp {
>  		fsl,pins = <
>  			IMX94_PAD_UART1_TXD__LPUART1_TX		0x31e
> --
> 2.34.1
>