arm64: dts: rockchip: rk356x: Add HDMI nodes

Add support for the HDMI port found on RK3568.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.kernel.org/r/20220422072841.2206452-18-s.hauer@pengutronix.deSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk356x.dtsi

@@ -683,6 +683,38 @@ vop_mmu: iommu@fe043e00 {
 		status = "disabled";
 	};
 
+	hdmi: hdmi@fe0a0000 {
+		compatible = "rockchip,rk3568-dw-hdmi";
+		reg = <0x0 0xfe0a0000 0x0 0x20000>;
+		interrupts = <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&cru PCLK_HDMI_HOST>,
+			 <&cru CLK_HDMI_SFR>,
+			 <&cru CLK_HDMI_CEC>,
+			 <&pmucru CLK_HDMI_REF>,
+			 <&cru HCLK_VO>;
+		clock-names = "iahb", "isfr", "cec", "ref";
+		pinctrl-names = "default";
+		pinctrl-0 = <&hdmitx_scl &hdmitx_sda &hdmitxm0_cec>;
+		power-domains = <&power RK3568_PD_VO>;
+		reg-io-width = <4>;
+		rockchip,grf = <&grf>;
+		#sound-dai-cells = <0>;
+		status = "disabled";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
+		};
+	};
+
 	qos_gpu: qos@fe128000 {
 		compatible = "rockchip,rk3568-qos", "syscon";
 		reg = <0x0 0xfe128000 0x0 0x20>;