arm64: dts: ti: k3-j722s-evm: Add overlay for dual v3link fusion

Arducam's UC-A09 is a V3Link "mini" fusion board. [1]
It can be used to connect multiple V3Link (and FPD-III)
based cameras to TI EVMs using a single 22-pin FFC (4-lane)
CSI2 connector. Add an overlay to support it on J722S EVM.

[1] https://www.arducam.com/downloads/datasheet/Arducam_V3Link_Datasheet.pdf

Signed-off-by: Vaishnav Achath <vaishnav.a@ti.com>
Acked-by: Jai Luthra <j-luthra@ti.com>
Tested-by: Abhay Chirania <a-chirania@ti.com>

2 files changed, 175 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 297bb5a2cc79..05558113faaa 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -117,6 +117,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-csi2-rpi-cam-imx219.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-csi2-tevi-ov5640.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-dsi-rpi-7inch-panel.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-microtips-mf101hie-panel.dtbo
+dtb-$(CONFIG_ARCH_K3) += k3-j722s-evm-v3link-fusion.dtbo
 
 # Boards with J784s4 SoC
 dtb-$(CONFIG_ARCH_K3) += k3-am69-sk.dtb
@@ -187,5 +188,6 @@ DTC_FLAGS_k3-j721e-sk-fusion += -@
 DTC_FLAGS_k3-j721s2-common-proc-board += -@
 DTC_FLAGS_k3-j721s2-evm-fusion += -@
 DTC_FLAGS_k3-j722s-evm += -@
+DTC_FLAGS_k3-j722s-evm-v3link-fusion += -@
 DTC_FLAGS_k3-j784s4-evm += -@
 DTC_FLAGS_k3-am642-evm += -@
diff --git a/arch/arm64/boot/dts/ti/k3-j722s-evm-v3link-fusion.dtso b/arch/arm64/boot/dts/ti/k3-j722s-evm-v3link-fusion.dtso
new file mode 100644
index 000000000000..614198ca334c
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-j722s-evm-v3link-fusion.dtso
@@ -0,0 +1,173 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * DT Overlay for Arducam V3Link UC-A09 board
+ * https://www.arducam.com/fpd-link-3-cameras/
+ *
+ * Copyright (C) 2024 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+
+&{/} {
+	clk_fusion_25M_fixed: fixed-clock-25M {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <25000000>;
+	};
+};
+
+&exp1 {
+	p06-hog {
+		/* P06 - CSI01_MUX_SEL_2 */
+		gpio-hog;
+		gpios = <6 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "CSI01_MUX_SEL_2";
+	};
+
+	p07-hog {
+		/* P01 - CSI23_MUX_SEL_2 */
+		gpio-hog;
+		gpios = <7 GPIO_ACTIVE_HIGH>;
+		output-high;
+		line-name = "CSI23_MUX_SEL_2";
+	};
+};
+
+&pca9543_0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	/* CAM0 I2C */
+	i2c@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <0>;
+
+		deser@30 {
+			compatible = "ti,ds90ub960-q1";
+			reg = <0x30>;
+
+			clock-names = "refclk";
+			clocks = <&clk_fusion_25M_fixed>;
+
+			i2c-alias-pool = <0x4a 0x4b 0x4c 0x4d 0x4e 0x4f>;
+
+			ds90ub960_0_ports: ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				/* CSI-2 TX */
+				port@4 {
+					reg = <4>;
+					ds90ub960_0_csi_out: endpoint {
+						data-lanes = <1 2 3 4>;
+						clock-lanes = <0>;
+						link-frequencies = /bits/ 64 <800000000>;
+						remote-endpoint = <&csi2_phy0>;
+					};
+				};
+			};
+
+			ds90ub960_0_links: links {
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+		};
+	};
+
+	/* CAM1 I2C */
+	i2c@1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		reg = <1>;
+
+		deser@30 {
+			compatible = "ti,ds90ub960-q1";
+			reg = <0x30>;
+
+			clock-names = "refclk";
+			clocks = <&clk_fusion_25M_fixed>;
+
+			i2c-alias-pool = <0x5a 0x5b 0x5c 0x5d 0x5e 0x5f>;
+
+			ds90ub960_1_ports: ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				/* CSI-2 TX */
+				port@4 {
+					reg = <4>;
+					ds90ub960_1_csi_out: endpoint {
+						data-lanes = <1 2 3 4>;
+						clock-lanes = <0>;
+						link-frequencies = /bits/ 64 <800000000>;
+						remote-endpoint = <&csi2_phy1>;
+					};
+				};
+			};
+
+			ds90ub960_1_links: links {
+				#address-cells = <1>;
+				#size-cells = <0>;
+			};
+		};
+	};
+};
+
+&cdns_csi2rx0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi0_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2_phy0: endpoint {
+				remote-endpoint = <&ds90ub960_0_csi_out>;
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				link-frequencies = /bits/ 64 <800000000>;
+			};
+		};
+	};
+};
+
+&cdns_csi2rx1 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		csi1_port0: port@0 {
+			reg = <0>;
+			status = "okay";
+
+			csi2_phy1: endpoint {
+				remote-endpoint = <&ds90ub960_1_csi_out>;
+				clock-lanes = <0>;
+				data-lanes = <1 2 3 4>;
+				link-frequencies = /bits/ 64 <800000000>;
+			};
+		};
+	};
+};
+
+&ti_csi2rx0 {
+	status = "okay";
+};
+
+&dphy0 {
+	status = "okay";
+};
+
+&ti_csi2rx1 {
+	status = "okay";
+};
+
+&dphy1 {
+	status = "okay";
+};