From: Vishnu Saini <vishnu.saini@oss.qualcomm.com>
Date: Wed, 18 Mar 2026 19:08:19 +0000 (+0530)
Subject: arm64: dts: qcom: monaco-evk: add lt8713sx bridge with displayport
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e50db17fe84626540d8bf4528d5ccba0215d443d;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: qcom: monaco-evk: add lt8713sx bridge with displayport

Monaco-evk has LT8713sx which act as DP to 3 DP output
converter. Edp PHY from monaco soc is connected to lt8713sx
as input and output of lt8713sx is connected to 3 mini DP ports.

Two ports are available in mainboard and one port
is available on Mezz board.

lt8713sx is connected to soc over i2c0 and with reset gpio
connected to pin6 of ioexpander5.

Enable the edp nodes from monaco and enable lontium lt8713sx
bridge node.

Co-developed-by: Prahlad Valluru <vvalluru@qti.qualcomm.com>
Signed-off-by: Prahlad Valluru <vvalluru@qti.qualcomm.com>
Signed-off-by: Vishnu Saini <vishnu.saini@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260319-lt8713sx-bridge-linux-for-next-v4-1-da886ec78fe3@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
index fb687309decd..3858872e97d9 100644
--- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
@@ -57,6 +57,30 @@
 		#sound-dai-cells = <0>;
 	};
 
+	dp-connector-0 {
+		compatible = "dp-connector";
+		label = "DP0";
+		type = "mini";
+
+		port {
+			dp0_connector_in: endpoint {
+				remote-endpoint = <&lt8713sx_dp0_out>;
+			};
+		};
+	};
+
+	dp-connector-1 {
+		compatible = "dp-connector";
+		label = "DP1";
+		type = "mini";
+
+		port {
+			dp1_connector_in: endpoint {
+				remote-endpoint = <&lt8713sx_dp1_out>;
+			};
+		};
+	};
+
 	usb2_vbus: regulator-usb2-vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "usb2_vbus";
@@ -397,6 +421,45 @@
 	firmware-name = "qcom/qcs8300/a623_zap.mbn";
 };
 
+&i2c0 {
+	status = "okay";
+
+	bridge@4f {
+		compatible = "lontium,lt8713sx";
+		reg = <0x4f>;
+		reset-gpios = <&expander5 6 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lt8713sx_dp_in: endpoint {
+					remote-endpoint = <&mdss_dp0_out>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				lt8713sx_dp0_out: endpoint {
+					remote-endpoint = <&dp0_connector_in>;
+				};
+			};
+
+			port@2 {
+				reg = <2>;
+
+				lt8713sx_dp1_out: endpoint {
+					remote-endpoint = <&dp1_connector_in>;
+				};
+			};
+		};
+	};
+};
+
 &i2c1 {
 	pinctrl-0 = <&qup_i2c1_default>;
 	pinctrl-names = "default";
@@ -525,6 +588,30 @@
 	status = "okay";
 };
 
+&mdss {
+	status = "okay";
+};
+
+&mdss_dp0 {
+	pinctrl-0 = <&dp_hot_plug_det>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&mdss_dp0_out {
+	data-lanes = <0 1 2 3>;
+	link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
+	remote-endpoint = <&lt8713sx_dp_in>;
+};
+
+&mdss_dp0_phy {
+	vdda-phy-supply = <&vreg_l5a>;
+	vdda-pll-supply = <&vreg_l4a>;
+
+	status = "okay";
+};
+
 &pcie0 {
 	pinctrl-0 = <&pcie0_default_state>;
 	pinctrl-names = "default";
@@ -573,6 +660,11 @@
 	};
 };
 
+&qup_i2c0_data_clk {
+	drive-strength = <2>;
+	bias-pull-up;
+};
+
 &qupv3_id_0 {
 	firmware-name = "qcom/qcs8300/qupv3fw.elf";
 	status = "okay";
diff --git a/arch/arm64/boot/dts/qcom/monaco.dtsi b/arch/arm64/boot/dts/qcom/monaco.dtsi
index 3b00b81aeaf1..de528b4615f8 100644
--- a/arch/arm64/boot/dts/qcom/monaco.dtsi
+++ b/arch/arm64/boot/dts/qcom/monaco.dtsi
@@ -6418,6 +6418,12 @@
 				};
 			};
 
+			dp_hot_plug_det: dp-hot-plug-det-state {
+				pins = "gpio94";
+				function = "edp0_hot";
+				bias-disable;
+			};
+
 			hs0_mi2s_active: hs0-mi2s-active-state {
 				pins = "gpio106", "gpio107", "gpio108", "gpio109";
 				function = "hs0_mi2s";