* Himax HM5065 CSI camera sensor

Required Properties:
- compatible: should be "himax,hm5065"
- reg: I2C device address (0x1f)
- clocks: reference to the external input clock for the sensor.
- clock-names: should be "xclk".
- IOVDD-supply: Digital I/O voltage supply, 2.8 volts
- AVDD-supply: Analog voltage supply, 2.8 volts
- DVDD-supply: Digital core voltage supply, 1.8 volts
- AFVDD-supply: Auto focus voltage supply, 2.8 volts

Optional Properties (one or both must be configured):
- reset-gpios: reference to the GPIO connected to the reset pin, if any.
	       This is an active low signal to the HM5065.
- enable-gpios: reference to the GPIO connected to the CE pin,
		if any. This is an active high signal to the HM5065.

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:

&i2c1 {
	hm5065: camera@1f {
		compatible = "himax,hm5065";
		reg = <0x1f>;
		clocks = <&ccu CLK_CSI_MCLK>;
		clock-names = "xclk";
		IOVDD-supply = <&reg_dldo3>;
		AVDD-supply = <&reg_dldo4>;
		DVDD-supply = <&reg_eldo3>;
		AFVDD-supply = <&reg_dldo3>;
		reset-gpios = <&pio 4 18 GPIO_ACTIVE_LOW>; /* PE18 */
		enable-gpios = <&pio 4 19 GPIO_ACTIVE_HIGH>; /* PE19 */

		port {
			hm5065_ep: endpoint {
				remote-endpoint = <&csi0_hm5065_ep>;
				bus-width = <8>;
				hsync-active = <1>;
				vsync-active = <1>;
				data-active = <1>;
				pclk-sample = <1>;
			};
		};
	};
};