arm64: dts: allwinner: pinetab: Add HDMI support

This patch enables HDMI display on PINE64 PineTab.

The PineTab has a HDMI Type C (mini) port.
Signed-off-by: Dang Huynh <danct12@disroot.org>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20210914193732.3047668-1-danct12@disroot.org

arch/arm64/boot/dts/allwinner/sun50i-a64-pinetab.dts

@@ -35,6 +35,17 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "c";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
+
 	i2c-csi {
 		compatible = "i2c-gpio";
 		sda-gpios = <&pio 4 13 GPIO_ACTIVE_HIGH>; /* PE13 */
@@ -410,6 +421,21 @@ &reg_rtc_ldo {
 	regulator-name = "vcc-rtc";
 };
 
+&simplefb_hdmi {
+	vcc-hdmi-supply = <&reg_dldo1>;
+};
+
+&hdmi {
+	hvcc-supply = <&reg_dldo1>;
+	status = "okay";
+};
+
+&hdmi_out {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+	};
+};
+
 &sound {
 	status = "okay";
 	simple-audio-card,aux-devs = <&codec_analog>, <&speaker_amp>;