* Omnivision OV12D2Q MIPI CSI-2 sensor

Required Properties:
- compatible: should be "ovti,ov12d2q"
- clocks: reference to the 24M xvclk input clock.
- clock-names: should be "xvclk".
- dovdd-supply: Digital I/O voltage supply, 1.8 volts
- avdd-supply: Analog voltage supply, 2.8 volts
- dvdd-supply: Digital core voltage supply, 1.2 volts
- reset-gpios: Low active reset gpio
- pwdn-gpios: High active pwdn gpio

The device node must contain one 'port' child node for its digital output
video port, in accordance with the video interface bindings defined in
Documentation/devicetree/bindings/media/video-interfaces.txt.

Example:

	i2c0@1c22000 {
		ov12d2q: ov12d2q@36 {
			compatible = "ovti,ov12d2q";
			reg = <0x36>;
			clocks = <&cru CLK_MIPICSI_OUT>;
			clock-names = "xvclk";
			power-domains = <&power RV1126_PD_VI>;
			pinctrl-names = "rockchip,camera_default";
			pinctrl-0 = <&mipicsi_clk0>;
			avdd-supply = <&vcc_avdd>;
			dovdd-supply = <&vcc_dovdd>;
			dvdd-supply = <&vcc_dvdd>;
			pwdn-gpios = <&gpio1 RK_PD4 GPIO_ACTIVE_HIGH>;
			reset-gpios = <&gpio1 RK_PD5 GPIO_ACTIVE_LOW>;
			rockchip,camera-module-index = <1>;
			rockchip,camera-module-facing = "front";
			rockchip,camera-module-name = "default";
			rockchip,camera-module-lens-name = "default";
			port {
				ucam_out0: endpoint {
					remote-endpoint = <&mipi_in_ucam0>;
					data-lanes = <1 2 3 4>;
				};
			};
		};
	};