[PATCH v4 3/4] arm64: dts: renesas: sparrow-hawk: Add overlay for IMX462 on J1

[Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>]

Add an overlay to connect an IMX462 camera sensor to the J1 connector.
The IMX462 utilizes 4 CSI-2 D-PHY lanes. This enables the video capture
pipeline behind the CSI40 Rx to be enabled to process images from the
sensor.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
* Changes since v3
- Use correct port@0 instead of port.
- Fix incorrect clock in clock node.

* Changes since v2
- Use the same regulator for all three supplies.
- Drop 'status = "okay"' property for the fixed clock.
- Drop 'status = "okay"' property for the sensor node.
- Drop unused label for sensor node.

* Changes since v1
- Drop 'status = "okay"' property for the fixed regulators.
---
 arch/arm64/boot/dts/renesas/Makefile          |   3 +
 ...8a779g3-sparrow-hawk-camera-j1-imx462.dtso | 117 ++++++++++++++++++
 2 files changed, 120 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-camera-j1-imx462.dtso

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 914f8ae8381d..30a57e904d0a 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -97,10 +97,13 @@ dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g2-white-hawk-single-ard-audio-da7212.dtb
 DTC_FLAGS_r8a779g3-sparrow-hawk += -Wno-spi_bus_bridge
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk.dtb
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-camera-j1-imx219.dtbo
+dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-camera-j1-imx462.dtbo
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-camera-j2-imx219.dtbo
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-fan-pwm.dtbo
 r8a779g3-sparrow-hawk-camera-j1-imx219-dtbs := r8a779g3-sparrow-hawk.dtb r8a779g3-sparrow-hawk-camera-j1-imx219.dtbo
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-camera-j1-imx219.dtb
+r8a779g3-sparrow-hawk-camera-j1-imx462-dtbs := r8a779g3-sparrow-hawk.dtb r8a779g3-sparrow-hawk-camera-j1-imx462.dtbo
+dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-camera-j1-imx462.dtb
 r8a779g3-sparrow-hawk-camera-j2-imx219-dtbs := r8a779g3-sparrow-hawk.dtb r8a779g3-sparrow-hawk-camera-j2-imx219.dtbo
 dtb-$(CONFIG_ARCH_R8A779G0) += r8a779g3-sparrow-hawk-camera-j2-imx219.dtb
 r8a779g3-sparrow-hawk-fan-pwm-dtbs := r8a779g3-sparrow-hawk.dtb r8a779g3-sparrow-hawk-fan-pwm.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-camera-j1-imx462.dtso b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-camera-j1-imx462.dtso
new file mode 100644
index 000000000000..c710dc0c10b9
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk-camera-j1-imx462.dtso
@@ -0,0 +1,117 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Overlay for an IMX462 camera sensor in connector J1 on R-Car V4H
+ * ES3.0 Sparrow Hawk board.
+ *
+ * Copyright 2025 Renesas Electronics Corp.
+ * Copyright 2025 Niklas Söderlund <niklas.soderlund@xxxxxxxxxxxx>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/media/video-interfaces.h>
+
+&{/} {
+	clk_cam_j1: clk_cam_j1 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <37125000>;
+	};
+
+	/* Page 29 / CSI_IF_CN / J1 */
+	reg_cam_j1: reg_cam_j1 {
+		compatible = "regulator-fixed";
+		regulator-name = "reg_cam_j1";
+		enable-active-high;
+		gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&i2c1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	cam@1a {
+		compatible = "sony,imx462lqr";
+		reg = <0x1a>;
+
+		clocks = <&clk_cam_j1>;
+		clock-names = "xclk";
+		clock-frequency = <37125000>;
+
+		vdddo-supply = <&reg_cam_j1>;
+		vdda-supply = <&reg_cam_j1>;
+		vddd-supply = <&reg_cam_j1>;
+
+		orientation = <2>;
+		rotation = <0>;
+
+		port {
+			imx462_j1_out: endpoint {
+				link-frequencies = /bits/ 64 <222750000 148500000>;
+				data-lanes = <1 2 3 4>;
+				remote-endpoint = <&csi40_in>;
+			};
+		};
+	};
+};
+
+/* Page 29 / CSI_IF_CN */
+&csi40 {
+	status = "okay";
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+
+			csi40_in: endpoint {
+				bus-type = <MEDIA_BUS_TYPE_CSI2_DPHY>;
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				remote-endpoint = <&imx462_j1_out>;
+			};
+		};
+	};
+};
+
+&isp0 {
+	status = "okay";
+};
+
+&vin00 {
+	status = "okay";
+};
+
+&vin01 {
+	status = "okay";
+};
+
+&vin02 {
+	status = "okay";
+};
+
+&vin03 {
+	status = "okay";
+};
+
+&vin04 {
+	status = "okay";
+};
+
+&vin05 {
+	status = "okay";
+};
+
+&vin06 {
+	status = "okay";
+};
+
+&vin07 {
+	status = "okay";
+};
-- 
2.51.0