[PATCH] arm64: dts: mediatek: mt8390-tungsten-smarc: add HDMI support

[Gary Bisson <bisson.gary@gmail.com>]

Add HDMI display out support to both Tungsten510 & Tungsten700
platforms. HDMI audio is not covered by this patch, audio (HDMI & I2S)
will be added as a follow-up patch.

Signed-off-by: Gary Bisson <bisson.gary@gmail.com>
---
 .../boot/dts/mediatek/mt8390-tungsten-smarc.dtsi   | 116 +++++++++++++++++++++
 1 file changed, 116 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8390-tungsten-smarc.dtsi b/arch/arm64/boot/dts/mediatek/mt8390-tungsten-smarc.dtsi
index 40b381d4cc35..85c1ff6a3588 100644
--- a/arch/arm64/boot/dts/mediatek/mt8390-tungsten-smarc.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8390-tungsten-smarc.dtsi
@@ -46,6 +46,20 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	connector {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+		ddc-i2c-bus = <&hdmi_ddc>;
+		hdmi-pwr-supply = <&hdmi_phy>;
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&hdmi0_out>;
+			};
+		};
+	};
+
 	firmware {
 		optee {
 			compatible = "linaro,optee-tz";
@@ -283,6 +297,18 @@ &dither0_out {
 	remote-endpoint = <&dsi0_in>;
 };
 
+&dpi1 {
+	status = "okay";
+};
+
+&dpi1_in {
+	remote-endpoint = <&merge5_out>;
+};
+
+&dpi1_out {
+	remote-endpoint = <&hdmi0_in>;
+};
+
 &eth {
 	phy-mode ="rgmii-id";
 	phy-handle = <&ethernet_phy0>;
@@ -304,6 +330,35 @@ ethernet_phy0: ethernet-phy@7 {
 	};
 };
 
+&ethdr0 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+
+			ethdr0_in: endpoint@1 {
+				reg = <1>;
+				remote-endpoint = <&vdosys1_ep_ext>;
+			};
+		};
+
+		port@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			ethdr0_out: endpoint@1 {
+				reg = <1>;
+				remote-endpoint = <&merge5_in>;
+			};
+		};
+	};
+};
+
 &gamma0_out {
 	remote-endpoint = <&postmask0_in>;
 };
@@ -313,6 +368,26 @@ &gpu {
 	status = "okay";
 };
 
+&hdmi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&hdmi_pins>;
+	status = "okay";
+};
+
+&hdmi0_in {
+	remote-endpoint = <&dpi1_out>;
+};
+
+&hdmi0_out {
+	remote-endpoint = <&hdmi_connector_in>;
+};
+
+&hdmi_phy {
+	pinctrl-names = "default";
+	pinctrl-0 = <&hdmi_vreg_pins>;
+	status = "okay";
+};
+
 &i2c0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c0_pins>;
@@ -531,6 +606,35 @@ touchscren@5d {
 	};
 };
 
+&merge5 {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+
+			merge5_in: endpoint@1 {
+				reg = <1>;
+				remote-endpoint = <&ethdr0_out>;
+			};
+		};
+
+		port@1 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+
+			merge5_out: endpoint@1 {
+				reg = <1>;
+				remote-endpoint = <&dpi1_in>;
+			};
+		};
+	};
+};
+
 &mfg0 {
 	domain-supply = <&mt6359_vproc2_buck_reg>;
 };
@@ -977,6 +1081,18 @@ vdosys0_ep_main: endpoint@0 {
 	};
 };
 
+&vdosys1 {
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vdosys1_ep_ext: endpoint@1 {
+			reg = <1>;
+			remote-endpoint = <&ethdr0_in>;
+		};
+	};
+};
+
 &watchdog {
 	pinctrl-names = "default";
 	pinctrl-0 = <&watchdog_pins>;

---
base-commit: 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f
change-id: 20260310-mtkhdmi-cec3ddb248b0

Best regards,
-- 
Gary Bisson <bisson.gary@gmail.com>