led-backlight.txt

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    1 led-backlight bindings
    2 
    3 This binding is used to describe a basic backlight device made of LEDs.
    4 It can also be used to describe a backlight device controlled by the output of
    5 a LED driver.
    6 
    7 Required properties:
    8   - compatible: "led-backlight"
    9   - leds: a list of LEDs
   10 
   11 Optional properties:
   12   - brightness-levels: Array of distinct brightness levels. The levels must be
   13                        in the range accepted by the underlying LED devices.
   14                        This is used to translate a backlight brightness level
   15                        into a LED brightness level. If it is not provided, the
   16                        identity mapping is used.
   17 
   18   - default-brightness-level: The default brightness level.
   19 
   20 Example:
   21 
   22         backlight {
   23                 compatible = "led-backlight";
   24 
   25                 leds = <&led1>, <&led2>;
   26                 brightness-levels = <0 4 8 16 32 64 128 255>;
   27                 default-brightness-level = <6>;
   28         };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/leds/backlight/led-backlight.txt

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/leds/backlight/led-backlight.txt