arm64: dts: ti: k3-am62x: Add overlays for OV5640

Three different OV5640 modules are supported using the 15-pin FFC
connector on SK-AM62:
- Digilent PCam 5C
- ALINX AN5641
- TEVI-OV5640-*-RPI

The Digilent and ALINX modules supply a 12Mhz XCLK to the sensor, while
the TEVI module supplies a 24Mhz XCLK, thus requiring a separate
overlay.

These overlays can be used on other boards of the SK-AM62* family that
have a 15/22-pin FFC connector, so we name the overlays with the prefix
k3-am62x-.

Tested-by: Martyn Welch <martyn.welch@collabora.com>
Signed-off-by: Jai Luthra <j-luthra@ti.com>
Link: https://lore.kernel.org/r/20231201-csi_dts-v3-6-9f06f31080fe@ti.com
Signed-off-by: Nishanth Menon <nm@ti.com>

arch/arm64/boot/dts/ti/Makefile

@@ -32,6 +32,10 @@ dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
 # Boards with AM62Px SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am62p5-sk.dtb
 
+# Common overlays for SK-AM62* family of boards
+dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-ov5640.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am62x-sk-csi2-tevi-ov5640.dtbo
+
 # Boards with AM64x SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am642-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb
@@ -87,13 +91,26 @@ k3-am625-beagleplay-csi2-ov5640-dtbs := k3-am625-beagleplay.dtb \
 	k3-am625-beagleplay-csi2-ov5640.dtbo
 k3-am625-beagleplay-csi2-tevi-ov5640-dtbs := k3-am625-beagleplay.dtb \
 	k3-am625-beagleplay-csi2-tevi-ov5640.dtbo
+k3-am625-sk-csi2-ov5640-dtbs := k3-am625-sk.dtb \
+	k3-am62x-sk-csi2-ov5640.dtbo
+k3-am625-sk-csi2-tevi-ov5640-dtbs := k3-am625-sk.dtb \
+	k3-am62x-sk-csi2-tevi-ov5640.dtbo
+k3-am62a7-sk-csi2-ov5640-dtbs := k3-am62a7-sk.dtb \
+	k3-am62x-sk-csi2-ov5640.dtbo
+k3-am62a7-sk-csi2-tevi-ov5640-dtbs := k3-am62a7-sk.dtb \
+	k3-am62x-sk-csi2-tevi-ov5640.dtbo
 dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
-	k3-am625-beagleplay-csi2-tevi-ov5640.dtb
+	k3-am625-beagleplay-csi2-tevi-ov5640.dtb \
+	k3-am625-sk-csi2-ov5640.dtb \
+	k3-am625-sk-csi2-tevi-ov5640.dtb \
+	k3-am62a7-sk-csi2-ov5640.dtb \
+	k3-am62a7-sk-csi2-tevi-ov5640.dtb
 
 # Enable support for device-tree overlays
 DTC_FLAGS_k3-am625-beagleplay += -@
 DTC_FLAGS_k3-am625-sk += -@
 DTC_FLAGS_k3-am62-lp-sk += -@
+DTC_FLAGS_k3-am62a7-sk += -@
 DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
 DTC_FLAGS_k3-j721e-common-proc-board += -@
 DTC_FLAGS_k3-j721s2-common-proc-board += -@

arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-ov5640.dtso

@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ALINX AN5641 & Digilent PCam 5C - OV5640 camera module
+ * Copyright (C) 2022-2023 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	clk_ov5640_fixed: ov5640-xclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <12000000>;
+	};
+};
+
+&main_i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	i2c-switch@71 {
+		compatible = "nxp,pca9543";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x71>;
+
+		/* CAM port */
+		i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			ov5640: camera@3c {
+				compatible = "ovti,ov5640";
+				reg = <0x3c>;
+
+				clocks = <&clk_ov5640_fixed>;
+				clock-names = "xclk";
+				powerdown-gpios = <&exp1 13 GPIO_ACTIVE_LOW>;
+
+				port {
+					csi2_cam0: endpoint {
+						remote-endpoint = <&csi2rx0_in_sensor>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&cdns_csi2rx0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi0_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2rx0_in_sensor: endpoint {
+				remote-endpoint = <&csi2_cam0>;
+				bus-type = <4>; /* CSI2 DPHY. */
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};
+
+&ti_csi2rx0 {
+	status = "okay";
+};
+
+&dphy0 {
+	status = "okay";
+};

arch/arm64/boot/dts/ti/k3-am62x-sk-csi2-tevi-ov5640.dtso

@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Technexion TEVI-OV5640-*-RPI - OV5640 camera module
+ * Copyright (C) 2022-2023 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	clk_ov5640_fixed: ov5640-xclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+	};
+};
+
+&main_i2c2 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	i2c-switch@71 {
+		compatible = "nxp,pca9543";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0x71>;
+
+		/* CAM port */
+		i2c@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			ov5640: camera@3c {
+				compatible = "ovti,ov5640";
+				reg = <0x3c>;
+
+				clocks = <&clk_ov5640_fixed>;
+				clock-names = "xclk";
+				powerdown-gpios = <&exp1 13 GPIO_ACTIVE_LOW>;
+
+				port {
+					csi2_cam0: endpoint {
+						remote-endpoint = <&csi2rx0_in_sensor>;
+						clock-lanes = <0>;
+						data-lanes = <1 2>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&cdns_csi2rx0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi0_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2rx0_in_sensor: endpoint {
+				remote-endpoint = <&csi2_cam0>;
+				bus-type = <4>; /* CSI2 DPHY. */
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};
+
+&ti_csi2rx0 {
+	status = "okay";
+};
+
+&dphy0 {
+	status = "okay";
+};