ARM: dts: sun5i: q8-common: Enable display pipeline and LCD display

Q8 form factor A13 tablets have a 7" LCD panel. Unfortunately we
don't know the exact model of the panel. Just pick a panel with
display timings close to what we know.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun5i-q8-common.dtsi

@@ -59,6 +59,29 @@ backlight: backlight {
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	panel: panel {
+		compatible = "urt,umsh-8596md-t", "simple-panel";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			/* TODO: lcd panel uses axp gpio0 as enable pin */
+			backlight = <&backlight>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			panel_input: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&tcon0_out_lcd>;
+			};
+		};
+	};
+};
+
+&be0 {
+	status = "okay";
 };
 
 &codec {
@@ -173,6 +196,19 @@ &reg_usb0_vbus {
 	status = "okay";
 };
 
+&tcon0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&lcd_rgb666_pins>;
+	status = "okay";
+};
+
+&tcon0_out {
+	tcon0_out_lcd: endpoint@0 {
+		reg = <0>;
+		remote-endpoint = <&panel_input>;
+	};
+};
+
 &uart1 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart1_pins_b>;