[PATCH v3 4/4] arm64: dts: ti: k3-am67a-beagley-ai: Add overlay for IMX219 on CSI1

[Jai Luthra <jai.luthra@ideasonboard.com>]

RPi v2 Camera (IMX219) is an 8MP camera that can be used with BeagleY AI
through the 22-pin CSI-RX connectors. Add a DT overlay to enable use of
this camera sensor through the CSI1 connector.

The CSI1 connector is muxed with DSI0, so ensure that we route it to
CSI1 (DSI_CSI_OE=0 and DSI_CSI_SEL=1).

Link: https://pip.raspberrypi.com/categories/1205-drawings-and-schematics
Link: https://docs.beagle.cc/boards/beagley/ai/03-design.html#id60
Signed-off-by: Jai Luthra <jai.luthra@ideasonboard.com>
---
Changes in v3:
- Now that I2C node is defined by the board DTS, only set status = okay
  here
- Add schematic links for the v2 camera module and BeagleY CSI connector
---
 arch/arm64/boot/dts/ti/Makefile                    |   4 +
 .../dts/ti/k3-am67a-beagley-ai-csi1-imx219.dtso    | 118 +++++++++++++++++++++
 2 files changed, 122 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 68a82e161c20..51e74f26c803 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -153,6 +153,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j721s2-evm-usb0-type-a.dtbo
 # Boards with J722s SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am67a-beagley-ai.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am67a-beagley-ai-csi0-imx219.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-am67a-beagley-ai-csi1-imx219.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-csi2-quad-tevi-ov5640.dtbo
@@ -248,6 +249,8 @@ k3-am642-tqma64xxl-mbax4xxl-wlan-dtbs := \
 	k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-wlan.dtbo
 k3-am67a-beagley-ai-csi0-imx219-dtbs := k3-am67a-beagley-ai.dtb \
 	k3-am67a-beagley-ai-csi0-imx219.dtbo
+k3-am67a-beagley-ai-csi1-imx219-dtbs := k3-am67a-beagley-ai.dtb \
+	k3-am67a-beagley-ai-csi1-imx219.dtbo
 k3-am68-sk-base-board-csi2-dual-imx219-dtbs := k3-am68-sk-base-board.dtb \
 	k3-j721e-sk-csi2-dual-imx219.dtbo
 k3-am68-sk-base-board-pcie1-ep-dtbs := k3-am68-sk-base-board.dtb \
@@ -322,6 +325,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am642-tqma64xxl-mbax4xxl-sdcard.dtb \
 	k3-am642-tqma64xxl-mbax4xxl-wlan.dtb \
 	k3-am67a-beagley-ai-csi0-imx219.dtb \
+	k3-am67a-beagley-ai-csi1-imx219.dtb \
 	k3-am68-phyboard-izar-lvds-ph128800t006.dtb \
 	k3-am68-phyboard-izar-peb-av-15.dtb \
 	k3-am68-sk-base-board-csi2-dual-imx219.dtb \
diff --git a/arch/arm64/boot/dts/ti/k3-am67a-beagley-ai-csi1-imx219.dtso b/arch/arm64/boot/dts/ti/k3-am67a-beagley-ai-csi1-imx219.dtso
new file mode 100644
index 000000000000..cf3729f5ae60
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am67a-beagley-ai-csi1-imx219.dtso
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0-only OR MIT
+/*
+ * RPi Camera V2.1 on BeagleY AI CSI1 port
+ *
+ * Copyright (C) 2026 Ideas On Board Oy
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include "k3-pinctrl.h"
+
+&{/} {
+	clk_imx219_csi1: imx219-csi1-xclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <24000000>;
+	};
+
+	reg_2p8v_csi1: regulator-2p8v-csi1 {
+		compatible = "regulator-fixed";
+		regulator-name = "2P8V_CSI1";
+		regulator-min-microvolt = <2800000>;
+		regulator-max-microvolt = <2800000>;
+		vin-supply = <&vdd_3v3>;
+		regulator-always-on;
+	};
+
+	reg_1p8v_csi1: regulator-1p8v-csi1 {
+		compatible = "regulator-fixed";
+		regulator-name = "1P8V_CSI1";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vdd_3v3>;
+		regulator-always-on;
+	};
+
+	reg_1p2v_csi1: regulator-1p2v-csi1 {
+		compatible = "regulator-fixed";
+		regulator-name = "1P2V_CSI1";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		vin-supply = <&vdd_3v3>;
+		regulator-always-on;
+	};
+};
+
+&main_pmx0 {
+	cam1_reset_pins_default: cam1-default-reset-pins {
+		pinctrl-single,pins = <
+			J722S_IOPAD(0x01d8, PIN_OUTPUT, 7) /* (D22) MCAN0_TX.GPIO1_24 */
+		>;
+	};
+};
+
+&dsi_csi_mux {
+	idle-state = <1>;
+};
+
+&main_i2c0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	status = "okay";
+
+	imx219_1: sensor@10 {
+		compatible = "sony,imx219";
+		reg = <0x10>;
+
+		clocks = <&clk_imx219_csi1>;
+
+		VANA-supply = <&reg_2p8v_csi1>;
+		VDIG-supply = <&reg_1p8v_csi1>;
+		VDDL-supply = <&reg_1p2v_csi1>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&cam1_reset_pins_default>;
+
+		reset-gpios = <&main_gpio1 24 GPIO_ACTIVE_HIGH>;
+
+		port {
+			csi2_cam1: endpoint {
+				remote-endpoint = <&csi2rx1_in_sensor>;
+				link-frequencies = /bits/ 64 <456000000>;
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};
+
+&cdns_csi2rx1 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi1_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2rx1_in_sensor: endpoint {
+				remote-endpoint = <&csi2_cam1>;
+				bus-type = <4>; /* CSI2 DPHY. */
+				clock-lanes = <0>;
+				data-lanes = <1 2>;
+			};
+		};
+	};
+};
+
+&ti_csi2rx1 {
+	status = "okay";
+};
+
+&dphy1 {
+	status = "okay";
+};

-- 
2.54.0