kernel/Documentation/devicetree/bindings/video/backlight/gpio-backlight.txt

   1 gpio-backlight bindings
   2
   3 Required properties:
   4   - compatible: "gpio-backlight"
   5   - gpios: describes the gpio that is used for enabling/disabling the backlight.
   6     refer to bindings/gpio/gpio.txt for more details.
   7
   8 Optional properties:
   9   - default-on: enable the backlight at boot.
  10
  11 Example:
  12         backlight {
  13                 compatible = "gpio-backlight";
  14                 gpios = <&gpio3 4 GPIO_ACTIVE_HIGH>;
  15                 default-on;
  16         };