The device is controlled through enable gpio pin.
gpio asserted high, enable flash strobe.

Required properties:

- compatible : Must be "led,rgb13h".
- enable-gpios : Must be device tree identifier of the flash device enable pin.

A discrete LED element connected to the device must be represented by a child
node - see Documentation/devicetree/bindings/leds/common.txt.

Required properties of the LED child node:
- led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
- flash-max-timeout-us : see Documentation/devicetree/bindings/leds/common.txt

Optional properties of the LED child node:
- label : see Documentation/devicetree/bindings/leds/common.txt

Special properties:
- rockchip,camera-module-index : indicate which camera the flash belongs to.
- rockchip,camera-module-facing : indicate the camera facing.

flash_rgb13h: flash-rgb13h {
	compatible = "led,rgb13h";
	label = "gpio-flash";
	led-max-microamp = <20000>;
	flash-max-microamp = <20000>;
	flash-max-timeout-us = <1000000>;
	enable-gpio = <&gpio0 11 GPIO_ACTIVE_HIGH>;
	rockchip,camera-module-index = <1>;
	rockchip,camera-module-facing = "back";
};

&i2c2 {
	...
	ov2680@10 {
		...
		flash-leds = <&flash_rgb13h>;
		...
	};
};