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usr / src / sys / contrib / device-tree / Bindings / leds / backlight /

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📄 88pm860x.txt(306 B)
📄 arcxcnn_bl.txt(1.01 KB)
📄 gpio-backlight.txt(395 B)
📄 gpio-backlight.yaml(839 B)
📄 led-backlight.txt(882 B)
📄 led-backlight.yaml(1.5 KB)
📄 lm3630a-backlight.yaml(3.47 KB)
📄 lp855x.txt(1.65 KB)
📄 max8925-backlight.txt(173 B)
📄 pwm-backlight.txt(2.36 KB)
📄 pwm-backlight.yaml(2.76 KB)
📄 qcom-wled.yaml(5.87 KB)
📄 sky81452-backlight.txt(922 B)
📄 tps65217-backlight.txt(771 B)
📄 zii,rave-sp-backlight.txt(608 B)

Editing: led-backlight.yaml

# SPDX-License-Identifier: GPL-2.0-only
%YAML 1.2
---
$id: http://devicetree.org/schemas/leds/backlight/led-backlight.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: led-backlight bindings

maintainers:
  - Lee Jones <lee.jones@linaro.org>
  - Daniel Thompson <daniel.thompson@linaro.org>
  - Jingoo Han <jingoohan1@gmail.com>

description:
  This binding is used to describe a basic backlight device made of LEDs. It
  can also be used to describe a backlight device controlled by the output of
  a LED driver.

properties:
  compatible:
    const: led-backlight

leds:
    description: A list of LED nodes
    $ref: /schemas/types.yaml#/definitions/phandle-array

brightness-levels:
    description:
      Array of distinct brightness levels. The levels must be in the range
      accepted by the underlying LED devices. This is used to translate a
      backlight brightness level into a LED brightness level. If it is not
      provided, the identity mapping is used.
    $ref: /schemas/types.yaml#/definitions/uint32-array

default-brightness-level:
    description:
      The default brightness level (index into the array defined by the
      "brightness-levels" property).
    $ref: /schemas/types.yaml#/definitions/uint32

required:
  - compatible
  - leds

additionalProperties: false

examples:
  - |
    backlight {
        compatible = "led-backlight";

leds = <&led1>, <&led2>;
        brightness-levels = <0 4 8 16 32 64 128 255>;
        default-brightness-level = <6>;
    };

...

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