From: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Date: Wed, 17 Dec 2025 10:19:09 +0000 (+0100)
Subject: arm64: dts: mediatek: mt8395-genio-common: Enable HDMI output
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1480453aed83e2b0d2e52a0e439c56bd4c3a4c4;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: mediatek: mt8395-genio-common: Enable HDMI output

Add a definition for the on-board HDMI connector, enable and add
the relevant configuration for the HDMI PHY and controller, and
define the pins used by those.

Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
index 2b7167804e71d..345fc5ac9e039 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-common.dtsi
@@ -26,6 +26,20 @@
 		stdout-path = "serial0:921600n8";
 	};
 
+	connector {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+		type = "a";
+		ddc-i2c-bus = <&hdmitx_ddc>;
+		hdmi-pwr-supply = <&hdmi_phy>;
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&hdmi0_out>;
+			};
+		};
+	};
+
 	firmware {
 		optee {
 			compatible = "linaro,optee-tz";
@@ -247,6 +261,18 @@
 	wakeup-delay-ms = <200>;
 };
 
+&dpi1 {
+	status = "okay";
+};
+
+&dpi1_in {
+	remote-endpoint = <&merge5_out>;
+};
+
+&dpi1_out {
+	remote-endpoint = <&hdmi0_in>;
+};
+
 &dsi0 {
 	#address-cells = <1>;
 	#size-cells = <0>;
@@ -313,6 +339,35 @@
 	};
 };
 
+&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 = <&dither0_in>;
 };
@@ -329,6 +384,27 @@
 	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";
+};
+
 &i2c1 {
 	clock-frequency = <400000>;
 	pinctrl-0 = <&i2c1_pins>;
@@ -533,6 +609,35 @@
 	};
 };
 
+&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 = <&mt6315_7_vbuck1>;
 };
@@ -762,6 +867,31 @@
 		};
 	};
 
+	hdmi_vreg_pins: hdmi-vreg-pins {
+		pins-pwr {
+			pinmux = <PINMUX_GPIO31__FUNC_HDMITX20_PWR5V>;
+			bias-disable;
+		};
+	};
+
+	hdmi_pins: hdmi-pins {
+		pins-hotplug {
+			pinmux = <PINMUX_GPIO32__FUNC_HDMITX20_HTPLG>;
+			bias-pull-down;
+		};
+
+		pins-ddc {
+			pinmux = <PINMUX_GPIO34__FUNC_HDMITX20_SCL>,
+				 <PINMUX_GPIO35__FUNC_HDMITX20_SDA>;
+			drive-strength = <10>;
+		};
+
+		pins-cec {
+			pinmux = <PINMUX_GPIO33__FUNC_HDMITX20_CEC>;
+			bias-disable;
+		};
+	};
+
 	i2c0_pins: i2c0-pins {
 		pins {
 			pinmux = <PINMUX_GPIO8__FUNC_SDA0>,
@@ -1212,6 +1342,18 @@
 	};
 };
 
+&vdosys1 {
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vdosys1_ep_ext: endpoint@1 {
+			reg = <1>;
+			remote-endpoint = <&ethdr0_in>;
+		};
+	};
+};
+
 &xhci0 {
 	status = "okay";
 };