arm64: dts: qcom: sm8350-hdk: Enable lt9611uxc dsi-hdmi bridge

The sm8350-hdk ships with the LT9611 UXC DSI/HDMI bridge chip.

In order to toggle the board to enable the HDMI output,
switch #7 & #8 on the rightmost multi-switch package have
to be toggled to On.
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230117120223.1055225-4-rfoss@kernel.org

arch/arm64/boot/dts/qcom/sm8350-hdk.dts

@@ -20,6 +20,17 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con: endpoint {
+				remote-endpoint = <&lt9611_out>;
+			};
+		};
+	};
+
 	vph_pwr: vph-pwr-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vph_pwr";
@@ -29,6 +40,31 @@ vph_pwr: vph-pwr-regulator {
 		regulator-always-on;
 		regulator-boot-on;
 	};
+
+	lt9611_1v2: lt9611-1v2-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "LT9611_1V2";
+
+		vin-supply = <&vph_pwr>;
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		gpio = <&tlmm 49 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-boot-on;
+	};
+
+	lt9611_3v3: lt9611-3v3-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "LT9611_3V3";
+
+		vin-supply = <&vreg_bob>;
+		gpio = <&tlmm 47 GPIO_ACTIVE_HIGH>;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		regulator-boot-on;
+		regulator-always-on;
+	};
 };
 
 &adsp {
@@ -228,6 +264,15 @@ &dispcc {
 &mdss_dsi0 {
 	vdda-supply = <&vreg_l6b_1p2>;
 	status = "okay";
+
+	ports {
+		port@1 {
+			endpoint {
+				remote-endpoint = <&lt9611_a>;
+				data-lanes = <0 1 2 3>;
+			};
+		};
+	};
 };
 
 &mdss_dsi0_phy  {
@@ -239,6 +284,46 @@ &gpi_dma1 {
 	status = "okay";
 };
 
+&i2c15 {
+	clock-frequency = <400000>;
+	status = "okay";
+
+	lt9611_codec: hdmi-bridge@2b {
+		compatible = "lontium,lt9611uxc";
+		reg = <0x2b>;
+
+		interrupts-extended = <&tlmm 50 IRQ_TYPE_EDGE_FALLING>;
+		reset-gpios = <&tlmm 48 GPIO_ACTIVE_HIGH>;
+
+		vdd-supply = <&lt9611_1v2>;
+		vcc-supply = <&lt9611_3v3>;
+
+		pinctrl-names = "default";
+		pinctrl-0 = <&lt9611_state>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lt9611_a: endpoint {
+					remote-endpoint = <&dsi0_out>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+
+				lt9611_out: endpoint {
+					remote-endpoint = <&hdmi_con>;
+				};
+			};
+		};
+	};
+};
+
 &mdss {
 	status = "okay";
 };
@@ -289,6 +374,10 @@ &qupv3_id_0 {
 	status = "okay";
 };
 
+&qupv3_id_2 {
+	status = "okay";
+};
+
 &slpi {
 	status = "okay";
 	firmware-name = "qcom/sm8350/slpi.mbn";
@@ -427,4 +516,20 @@ usb_hub_enabled_state: usb-hub-enabled-state {
 		drive-strength = <2>;
 		output-low;
 	};
+
+	lt9611_state: lt9611-state {
+		rst {
+			pins = "gpio48";
+			function = "normal";
+
+			output-high;
+			input-disable;
+		};
+
+		irq {
+			pins = "gpio50";
+			function = "gpio";
+			bias-disable;
+		};
+	};
 };