arm64: dts: qcom: qrb4210-rb2: Enable display out

The RB2 has a HDMI output via an LT9611UXC bridge. Set it up.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-and-Tested-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230515-topic-rb2-bits-v1-2-a52d154a639d@linaro.org

arch/arm64/boot/dts/qcom/qrb4210-rb2.dts

@@ -19,6 +19,17 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con: endpoint {
+				remote-endpoint = <&lt9611_out>;
+			};
+		};
+	};
+
 	vreg_hdmi_out_1p2: regulator-hdmi-out-1p2 {
 		compatible = "regulator-fixed";
 		regulator-name = "VREG_HDMI_OUT_1P2";
@@ -105,6 +116,68 @@ vph_pwr: regulator-vph-pwr {
 	};
 };
 
+&gpi_dma0 {
+	status = "okay";
+};
+
+&i2c2 {
+	clock-frequency = <400000>;
+	status = "okay";
+
+	lt9611_codec: hdmi-bridge@2b {
+		compatible = "lontium,lt9611uxc";
+		reg = <0x2b>;
+		interrupts-extended = <&tlmm 46 IRQ_TYPE_EDGE_FALLING>;
+		reset-gpios = <&tlmm 41 GPIO_ACTIVE_HIGH>;
+
+		vdd-supply = <&vreg_hdmi_out_1p2>;
+		vcc-supply = <&lt9611_3v3>;
+
+		pinctrl-0 = <&lt9611_irq_pin &lt9611_rst_pin>;
+		pinctrl-names = "default";
+		#sound-dai-cells = <1>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lt9611_a: endpoint {
+					remote-endpoint = <&mdss_dsi0_out>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+
+				lt9611_out: endpoint {
+					remote-endpoint = <&hdmi_con>;
+				};
+			};
+		};
+	};
+};
+
+&mdss {
+	status = "okay";
+};
+
+&mdss_dsi0 {
+	vdda-supply = <&vreg_l18a_1p232>;
+	status = "okay";
+};
+
+&mdss_dsi0_out {
+	remote-endpoint = <&lt9611_a>;
+	data-lanes = <0 1 2 3>;
+};
+
+&mdss_dsi0_phy {
+	status = "okay";
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
@@ -287,10 +360,23 @@ &sleep_clk {
 };
 
 &tlmm {
-	gpio-reserved-ranges = <37 5>, <43 2>, <47 1>,
+	gpio-reserved-ranges = <43 2>, <47 1>,
 			       <49 1>, <52 1>, <54 1>,
 			       <56 3>, <61 2>, <64 1>,
 			       <68 1>, <72 8>, <96 1>;
+
+	lt9611_rst_pin: lt9611-rst-state {
+		pins = "gpio41";
+		function = "gpio";
+		input-disable;
+		output-high;
+	};
+
+	lt9611_irq_pin: lt9611-irq-state {
+		pins = "gpio46";
+		function = "gpio";
+		bias-disable;
+	};
 };
 
 &uart4 {