linux-kernel - [PATCH 3/5] arm64: dts: ti: k3-j722s-evm: Add camera peripherals

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Message-ID: <20250218185452.600797-4-vaishnav.a@ti.com>
Date: Wed, 19 Feb 2025 00:24:50 +0530
From: Vaishnav Achath <vaishnav.a@...com>
To: <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
CC: <linux-kernel@...r.kernel.org>, <jai.luthra@...ux.dev>,
        <y-abhilashchandra@...com>, <vaishnav.a@...com>
Subject: [PATCH 3/5] arm64: dts: ti: k3-j722s-evm: Add camera peripherals

J722S EVM has four RPi camera connectors and dual MIPI Samtec CSI
connectors which bring out the 4 x CSI2RX instances and the I2C camera
control interfaces. Add the nodes for PCA9543 I2C switch and enable them.

J722S EVM schematics: https://www.ti.com/lit/pdf/sprujb5

Signed-off-by: Vaishnav Achath <vaishnav.a@...com>
---
 arch/arm64/boot/dts/ti/k3-j722s-evm.dts | 28 +++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
index d184e9c1a0a5..5c0200c8811d 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm.dts
@@ -263,6 +263,13 @@ J722S_IOPAD(0x01e4, PIN_INPUT_PULLUP, 0) /* (B22) I2C0_SDA */
 		bootph-all;
 	};
 
+	main_i2c2_pins_default: main-i2c2-default-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x00b0, PIN_INPUT_PULLUP, 1) /* (P22) GPMC0_CSn2.I2C2_SCL */
+			J722S_IOPAD(0x00b4, PIN_INPUT_PULLUP, 1) /* (P23) GPMC0_CSn3.I2C2_SDA */
+		>;
+	};
+
 	main_uart0_pins_default: main-uart0-default-pins {
 		pinctrl-single,pins = <
 			J722S_IOPAD(0x01c8, PIN_INPUT, 0)	/* (A22) UART0_RXD */
@@ -631,6 +638,27 @@ tlv320aic3106: audio-codec@1b {
 	};
 };
 
+&main_i2c2 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&main_i2c2_pins_default>;
+	clock-frequency = <400000>;
+
+	pca9543_0: i2c-mux@70 {
+		compatible = "nxp,pca9543";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x70>;
+	};
+
+	pca9543_1: i2c-mux@71 {
+		compatible = "nxp,pca9543";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x71>;
+	};
+};
+
 &ospi0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&ospi0_pins_default>;
-- 
2.34.1