arm64: dts: rockchip: Add HDMI node to RK3368

Add the HDMI controller node to the main SoC devicetree and hook
it into the VOP.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
Link: https://patch.msgid.link/20260114230707.4175162-3-heiko@sntech.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: Heiko Stuebner

arch/arm64/boot/dts/rockchip/rk3368.dtsi

@@ -883,6 +883,11 @@
 				reg = <0>;
 				remote-endpoint = <&dsi_in_vop>;
 			};
+
+			vop_out_hdmi: endpoint@1 {
+				reg = <1>;
+				remote-endpoint = <&hdmi_in_vop>;
+			};
 		};
 	};
 
@@ -941,6 +946,37 @@
 		status = "disabled";
 	};
 
+	hdmi: hdmi@ff980000 {
+		compatible = "rockchip,rk3368-dw-hdmi";
+		reg = <0x0 0xff980000 0x0 0x20000>;
+		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>, <&cru SCLK_HDMI_CEC>;
+		clock-names = "iahb", "isfr", "cec";
+		pinctrl-names = "default";
+		pinctrl-0 = <&hdmi_i2c_xfer>;
+		power-domains = <&power RK3368_PD_VIO>;
+		reg-io-width = <4>;
+		rockchip,grf = <&grf>;
+		status = "disabled";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
+				hdmi_in_vop: endpoint {
+					remote-endpoint = <&vop_out_hdmi>;
+				};
+			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
+		};
+	};
+
 	hevc_mmu: iommu@ff9a0440 {
 		compatible = "rockchip,iommu";
 		reg = <0x0 0xff9a0440 0x0 0x40>,
@@ -1204,6 +1240,13 @@
 			};
 		};
 
+		hdmi {
+			hdmi_i2c_xfer: hdmi-i2c-xfer {
+				rockchip,pins = <3 RK_PD2 1 &pcfg_pull_none>,
+						<3 RK_PD3 1 &pcfg_pull_none>;
+			};
+		};
+
 		i2c0 {
 			i2c0_xfer: i2c0-xfer {
 				rockchip,pins = <0 RK_PA6 1 &pcfg_pull_none>,