arm64: dts: meson-g12a-sei510: Add support for Video Display

This patch adds the HDMI, CVBS and CEC attributes and nodes to support
full display on the SEI510 STB.

AO-CEC-B is used by default and AO-CEC-A is disabled.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

arch/arm64/boot/dts/amlogic/meson-g12a-sei510.dts

@@ -44,6 +44,16 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	cvbs-connector {
+		compatible = "composite-video-connector";
+
+		port {
+			cvbs_connector_in: endpoint {
+				remote-endpoint = <&cvbs_vdac_out>;
+			};
+		};
+	};
+
 	dc_in: regulator-dc_in {
 		compatible = "regulator-fixed";
 		regulator-name = "DC_IN";
@@ -61,6 +71,17 @@ emmc_1v8: regulator-emmc_1v8 {
 		regulator-always-on;
 	};
 
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&hdmi_tx_tmds_out>;
+			};
+		};
+	};
+
 	memory@0 {
 		device_type = "memory";
 		reg = <0x0 0x0 0x0 0x40000000>;
@@ -103,6 +124,26 @@ vddio_ao1v8: regulator-vddio_ao1v8 {
 	};
 };
 
+&cec_AO {
+	pinctrl-0 = <&cec_ao_a_h_pins>;
+	pinctrl-names = "default";
+	status = "disabled";
+	hdmi-phandle = <&hdmi_tx>;
+};
+
+&cecb_AO {
+	pinctrl-0 = <&cec_ao_b_h_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+	hdmi-phandle = <&hdmi_tx>;
+};
+
+&cvbs_vdac_port {
+	cvbs_vdac_out: endpoint {
+		remote-endpoint = <&cvbs_connector_in>;
+	};
+};
+
 &saradc {
 	status = "okay";
 	vref-supply = <&vddio_ao1v8>;
@@ -120,6 +161,18 @@ bluetooth {
 	};
 };
 
+&hdmi_tx {
+	status = "okay";
+	pinctrl-0 = <&hdmitx_hpd_pins>, <&hdmitx_ddc_pins>;
+	pinctrl-names = "default";
+};
+
+&hdmi_tx_tmds_port {
+	hdmi_tx_tmds_out: endpoint {
+		remote-endpoint = <&hdmi_connector_in>;
+	};
+};
+
 &uart_AO {
 	status = "okay";
 	pinctrl-0 = <&uart_ao_a_pins>;