arm64: dts: imx8mq-librem5-devkit: Enable the LCD panel

Enable LCD panel output by adding nodes for the NWL DSI host controller,
the Rocktech panel and the eLCDIF display controller.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Tested-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/boot/dts/freescale/imx8mq-librem5-devkit.dts

@@ -834,6 +834,39 @@ MX8MQ_IOMUXC_NAND_DATA03_GPIO3_IO9	0x19 /* WWAN_RESET */
 	};
 };
 
+&lcdif {
+	status = "okay";
+};
+
+&mipi_dsi {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	panel@0 {
+		compatible = "rocktech,jh057n00900";
+		reg = <0>;
+		backlight = <&backlight_dsi>;
+		reset-gpios = <&gpio3 13 GPIO_ACTIVE_LOW>;
+		iovcc-supply = <&reg_1v8_p>;
+		vcc-supply = <&reg_2v8_p>;
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&mipi_dsi_out>;
+			};
+		};
+	};
+
+	ports {
+		port@1 {
+			reg = <1>;
+			mipi_dsi_out: endpoint {
+				remote-endpoint = <&panel_in>;
+			};
+		};
+	};
+};
+
 &pgc_gpu {
 	power-supply = <&buck3_reg>;
 };