[PATCH 1/7] arm64: dts: qcom: lemans-draco-evk: Add LT9611UXD HDMI bridge support

[Mohit Dsor <mohit.dsor@oss.qualcomm.com>]

Add support for the Lontium LT9611UXD DSI-to-HDMI bridge on the base
board DT to provide HDMI output via the LT9611UXD daughter card.

LT9611UXD is connected through I2C mux channel 0 on i2c1, with reset
and interrupt on GPIO39 and GPIO97 respectively, powered by fixed
regulators on expander2. DIP Switch SW2.4 need to be ON for this to
work.

Signed-off-by: Mohit Dsor <mohit.dsor@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/lemans-draco-evk.dts | 118 ++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/lemans-draco-evk.dts b/arch/arm64/boot/dts/qcom/lemans-draco-evk.dts
index 5238157ad002..89beed7de36b 100644
--- a/arch/arm64/boot/dts/qcom/lemans-draco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/lemans-draco-evk.dts
@@ -16,6 +16,7 @@ / {
 	aliases {
 		ethernet0 = &ethernet0;
 		ethernet1 = &ethernet1;
+		i2c1 = &i2c1;
 	};
 
 	dp0-connector {
@@ -74,6 +75,34 @@ dp3_connector_in: endpoint {
 		};
 	};
 
+	hdmi_connector: hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_connector_out: endpoint {
+				remote-endpoint = <&hdmi_bridge_out>;
+			};
+		};
+	};
+
+	vreg_bridge_1p2: regulator-bridge-1p2 {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_bridge_1p2";
+		regulator-min-microvolt = <1200000>;
+		regulator-max-microvolt = <1200000>;
+		vin-supply = <&vreg_bridge_3p3>;
+	};
+
+	vreg_bridge_3p3: regulator-bridge-3p3 {
+		compatible = "regulator-fixed";
+		regulator-name = "vreg_bridge_3p3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&expander2 1 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
 	vreg_dp0_pwr: regulator-dp0-pwr {
 		compatible = "regulator-fixed";
 		regulator-name = "VREG_DP0_PWR_3P3";
@@ -115,6 +144,63 @@ vreg_dp3_pwr: regulator-dp3-pwr {
 	};
 };
 
+&i2c1 {
+	status = "okay";
+
+	i2c-mux@70 {
+		compatible = "nxp,pca9548";
+		reg = <0x70>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		vdd-supply = <&vreg_s4a>;
+
+		i2c@0 {
+			reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_bridge: hdmi-bridge@41 {
+				compatible = "lontium,lt9611uxd";
+				reg = <0x41>;
+
+				interrupts-extended = <&tlmm 97 IRQ_TYPE_EDGE_FALLING>;
+				reset-gpios = <&tlmm 39 GPIO_ACTIVE_LOW>;
+
+				vcc-supply = <&vreg_bridge_3p3>;
+				vdd-supply = <&vreg_bridge_1p2>;
+
+				pinctrl-0 = <&bridge_rst_pin &bridge_irq_pin>;
+				pinctrl-names = "default";
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+						hdmi_bridge_in0: endpoint {
+							remote-endpoint = <&mdss0_dsi0_out>;
+						};
+					};
+
+					port@1 {
+						reg = <1>;
+						hdmi_bridge_in1: endpoint {
+						};
+					};
+
+					port@2 {
+						reg = <2>;
+						hdmi_bridge_out: endpoint {
+							remote-endpoint = <&hdmi_connector_out>;
+						};
+					};
+				};
+			};
+		};
+	};
+};
+
 &i2c2 {
 	status = "okay";
 
@@ -156,6 +242,21 @@ expander4: gpio@38 {
 
 &tlmm {
 
+	bridge_rst_pin: bridge-rst-state {
+		pins = "gpio39";
+		function = "gpio";
+		drive-strength = <8>;
+		bias-disable;
+		output-high;
+	};
+
+	bridge_irq_pin: bridge-irq-state {
+		pins = "gpio97";
+		function = "gpio";
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	dp2_hot_plug_det: dp2-hot-plug-det-state {
 		pins = "gpio104";
 		function = "edp2_hot";
@@ -308,6 +409,23 @@ &mdss0_dp1_phy {
 	status = "okay";
 };
 
+&mdss0_dsi0 {
+	vdda-supply = <&vreg_l1c>;
+
+	status = "okay";
+};
+
+&mdss0_dsi0_out {
+	data-lanes = <0 1 2 3>;
+	remote-endpoint = <&hdmi_bridge_in0>;
+};
+
+&mdss0_dsi0_phy {
+	vdds-supply = <&vreg_l4a>;
+
+	status = "okay";
+};
+
 &mdss1 {
 	status = "okay";
 };

-- 
2.34.1