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>
---
 arch/arm64/boot/dts/qcom/monaco-evk.dts | 89 +++++++++++++++++++++++++++++++++
 arch/arm64/boot/dts/qcom/monaco.dtsi    |  6 +++
 2 files changed, 95 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/monaco-evk.dts b/arch/arm64/boot/dts/qcom/monaco-evk.dts
index 0b26cc334a69..0a91e421edbd 100644
--- a/arch/arm64/boot/dts/qcom/monaco-evk.dts
+++ b/arch/arm64/boot/dts/qcom/monaco-evk.dts
@@ -52,6 +52,30 @@ dmic: audio-codec-0 {
 		num-channels = <1>;
 	};
 
+	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>;
+			};
+		};
+	};
+
 	max98357a: audio-codec-1 {
 		compatible = "maxim,max98357a";
 		#sound-dai-cells = <0>;
@@ -355,6 +379,42 @@ &gpu_zap_shader {
 	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";
@@ -483,6 +543,30 @@ &iris {
 	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";
@@ -531,6 +615,11 @@ usb2_id: usb2-id-state {
 	};
 };
 
+&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 f92fdb1cefa0..5741cdbde3f5 100644
--- a/arch/arm64/boot/dts/qcom/monaco.dtsi
+++ b/arch/arm64/boot/dts/qcom/monaco.dtsi
@@ -5893,6 +5893,12 @@ 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 3/18/26 8:08 PM, 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.
> 
> 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>
> ---

[...]

> +			port@0 {
> +				reg = <0>;
> +				lt8713sx_dp_in: endpoint {

nit: it'd be neat to have a \n before the property and the following
subnodes

otherwise

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad

On Thu, Mar 19, 2026 at 11:11:20AM +0100, Konrad Dybcio wrote:
> On 3/18/26 8:08 PM, 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.
> > 
> > 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>
> > ---
> 
> [...]
> 
> > +			port@0 {
> > +				reg = <0>;
> > +				lt8713sx_dp_in: endpoint {
> 
> nit: it'd be neat to have a \n before the property and the following
> subnodes

sure, will add a blank line between reg property and lt8713sx_dp endpoint subnodes in next revision.
 
> otherwise
> 
> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> 
> Konrad