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>
---
 arch/arm64/boot/dts/qcom/monaco-evk.dts | 94 +++++++++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/monaco.dtsi    |  6 +++
 2 files changed, 100 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
index bb35893da73d..eb321867f1de 100644
--- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
@@ -32,6 +32,30 @@ dmic: audio-codec-0 {
 		num-channels = <1>;
 	};
 
+	dp-connector0 {
+		compatible = "dp-connector";
+		label = "DP";
+		type = "mini";
+
+		port {
+			dp0_connector_in: endpoint {
+				remote-endpoint = <&lt8713sx_dp0_out>;
+			};
+		};
+	};
+
+	dp-connector1 {
+		compatible = "dp-connector";
+		label = "DP";
+		type = "mini";
+
+		port {
+			dp1_connector_in: endpoint {
+				remote-endpoint = <&lt8713sx_dp1_out>;
+			};
+		};
+	};
+
 	max98357a: audio-codec-1 {
 		compatible = "maxim,max98357a";
 		#sound-dai-cells = <0>;
@@ -317,6 +341,45 @@ &gpu_zap_shader {
 	firmware-name = "qcom/qcs8300/a623_zap.mbn";
 };
 
+&i2c0 {
+	pinctrl-0 = <&qup_i2c0_default>;
+	pinctrl-names = "default";
+
+	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";
@@ -396,6 +459,30 @@ expander6: gpio@3e {
 	};
 };
 
+&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";
+};
+
 &iris {
 	status = "okay";
 };
@@ -451,6 +538,13 @@ ethernet0_mdio: ethernet0-mdio-pins {
 		};
 	};
 
+	qup_i2c0_default: qup-i2c0-state {
+		pins = "gpio17", "gpio18";
+		function = "qup0_se0";
+		drive-strength = <2>;
+		bias-pull-up;
+	};
+
 	qup_i2c1_default: qup-i2c1-state {
 		pins = "gpio19", "gpio20";
 		function = "qup0_se1";
diff --git a/arch/arm64/boot/dts/qcom/monaco.dtsi b/arch/arm64/boot/dts/qcom/monaco.dtsi
index e44fd5c33816..7f6c681fb1b4 100644
--- a/arch/arm64/boot/dts/qcom/monaco.dtsi
+++ b/arch/arm64/boot/dts/qcom/monaco.dtsi
@@ -5117,6 +5117,12 @@ tlmm: pinctrl@f100000 {
 			#interrupt-cells = <2>;
 			wakeup-parent = <&pdc>;
 
+			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";

-- 
2.34.1

On 19/12/2025 12:32, Vishnu Saini wrote:
> 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.


And how much time did you give to maintainers to respond to your
comments before sending v2?

You gave yourself 1 month. To the community you give 7 minutes.

That's just unacceptable.

NAK.

Best regards,
Krzysztof

On Fri, Dec 19, 2025 at 01:16:41PM +0100, Krzysztof Kozlowski wrote:
> On 19/12/2025 12:32, Vishnu Saini wrote:
> > 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.
> 
> 
> And how much time did you give to maintainers to respond to your
> comments before sending v2?
> 
> You gave yourself 1 month. To the community you give 7 minutes.
> 
> That's just unacceptable.
Apologies again maintainers, i will be more careful next time.

 
> NAK.
> 
> Best regards,
> Krzysztof