60 lines
1.5 KiB
YAML
60 lines
1.5 KiB
YAML
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# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/backlight/led-backlight.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: led-backlight bindings
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maintainers:
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- Lee Jones <lee@kernel.org>
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- Daniel Thompson <daniel.thompson@linaro.org>
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- Jingoo Han <jingoohan1@gmail.com>
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description:
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This binding is used to describe a basic backlight device made of LEDs. It
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can also be used to describe a backlight device controlled by the output of
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a LED driver.
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properties:
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compatible:
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const: led-backlight
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leds:
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description: A list of LED nodes
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$ref: /schemas/types.yaml#/definitions/phandle-array
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items:
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maxItems: 1
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brightness-levels:
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description:
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Array of distinct brightness levels. The levels must be in the range
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accepted by the underlying LED devices. This is used to translate a
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backlight brightness level into a LED brightness level. If it is not
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provided, the identity mapping is used.
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$ref: /schemas/types.yaml#/definitions/uint32-array
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default-brightness-level:
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description:
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The default brightness level (index into the array defined by the
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"brightness-levels" property).
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$ref: /schemas/types.yaml#/definitions/uint32
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required:
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- compatible
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- leds
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additionalProperties: false
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examples:
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- |
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backlight {
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compatible = "led-backlight";
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leds = <&led1>, <&led2>;
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brightness-levels = <0 4 8 16 32 64 128 255>;
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default-brightness-level = <6>;
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};
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...
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