arm64: dts: ti: k3-j721s2-common-proc-board: Add DP1

Add the endpoint nodes to describe connection from
DSS => DSI Bridge => DSI to eDP bridge => eDP panel.

Signed-off-by: Rahul T R <r-ravikumar@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>

arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts

@@ -138,6 +138,16 @@ dp0_pwr_3v3: fixedregulator-dp0-prw {
 		enable-active-high;
 	};
 
+	dp1_pwr_3v3: regulator-dp1-prw {
+		compatible = "regulator-fixed";
+		regulator-name = "dp1-pwr";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&exp4 1 GPIO_ACTIVE_HIGH>; /* P1 - DP1_PWR_SW_EN */
+		enable-active-high;
+		regulator-always-on;
+	};
+
 	dp0: dp0-connector {
 		compatible = "dp-connector";
 		label = "DP0";
@@ -150,6 +160,17 @@ dp0_connector_in: endpoint {
 			};
 		};
 	};
+
+	panel {
+		compatible = "ti,panel-edp";
+		power-supply = <&dp1_pwr_3v3>;
+
+		port {
+			dp1_panel_in: endpoint {
+				remote-endpoint = <&dp1_out>;
+			};
+		};
+	};
 };
 
 &main_i2c4 {
@@ -555,11 +576,54 @@ &dss {
 };
 
 &dss_ports {
-	port {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@0 {
+		reg = <0>;
 		dpi0_out: endpoint {
 			remote-endpoint = <&dp0_in>;
 		};
 	};
+
+	port@2 {
+		reg = <2>;
+		dpi2_out: endpoint {
+			remote-endpoint = <&dsi0_in>;
+		};
+	};
+};
+
+&dsi0_ports {
+	port@0 {
+		reg = <0>;
+		dsi0_out: endpoint {
+			remote-endpoint = <&dp1_in>;
+		};
+	};
+
+	port@1 {
+		reg = <1>;
+		dsi0_in: endpoint {
+			remote-endpoint = <&dpi2_out>;
+		};
+	};
+};
+
+&dsi_edp_bridge_ports {
+	port@0 {
+		reg = <0>;
+		dp1_in: endpoint {
+			remote-endpoint = <&dsi0_out>;
+		};
+	};
+
+	port@1 {
+		reg = <1>;
+		dp1_out: endpoint {
+			remote-endpoint = <&dp1_panel_in>;
+		};
+	};
 };
 
 &mhdp {