arm64: dts: rockchip: Simplify edp endpoints on several rk3399 boards

The only thing actually added here is a single endpoint on edp_out,
which is already defined in rk3399-base.dtsi, so it's simpler to just
reference that phandle, which allows the removal of several properties.

This fixes the following DTB validation warnings:

  graph node has single child node 'endpoint@0',
  #address-cells/#size-cells are not necessary

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
Link: https://lore.kernel.org/r/20250709132323.128757-6-didi.debian@cknow.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

Author: diederikdehaas

arch/arm64/boot/dts/rockchip/rk3399-gru-chromebook.dtsi

@@ -250,18 +250,11 @@
 	 */
 	assigned-clocks = <&cru PCLK_EDP>;
 	assigned-clock-rates = <24000000>;
+};
 
-	ports {
-		edp_out: port@1 {
-			reg = <1>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			edp_out_panel: endpoint@0 {
-				reg = <0>;
-				remote-endpoint = <&panel_in_edp>;
-			};
-		};
+&edp_out {
+	edp_out_panel: endpoint {
+		remote-endpoint = <&panel_in_edp>;
 	};
 };
 

arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts

@@ -404,18 +404,11 @@
 	pinctrl-names = "default";
 	pinctrl-0 = <&edp_hpd>;
 	status = "okay";
+};
 
-	ports {
-		edp_out: port@1 {
-			reg = <1>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			edp_out_panel: endpoint@0 {
-				reg = <0>;
-				remote-endpoint = <&panel_in_edp>;
-			};
-		};
+&edp_out {
+	edp_out_panel: endpoint {
+		remote-endpoint = <&panel_in_edp>;
 	};
 };
 

arch/arm64/boot/dts/rockchip/rk3399-sapphire-excavator.dts

@@ -142,21 +142,13 @@
 
 &edp {
 	status = "okay";
+};
 
-	ports {
-		edp_out: port@1 {
-			reg = <1>;
-			#address-cells = <1>;
-			#size-cells = <0>;
-
-			edp_out_panel: endpoint@0 {
-				reg = <0>;
-				remote-endpoint = <&panel_in_edp>;
-			};
-		};
+&edp_out {
+	edp_out_panel: endpoint {
+		remote-endpoint = <&panel_in_edp>;
 	};
 };
-
 &i2c1 {
 	i2c-scl-rising-time-ns = <300>;
 	i2c-scl-falling-time-ns = <15>;