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

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Message-Id: <20250515051900.2353627-3-shengjiu.wang@nxp.com>
Date: Thu, 15 May 2025 13:18:56 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: 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: [PATCH 2/6] arm64: dts: imx943-evk: add lpi2c support

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>
---
 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