0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/leds/backlight/common.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Common backlight properties
0008
0009 maintainers:
0010 - Lee Jones <lee@kernel.org>
0011 - Daniel Thompson <daniel.thompson@linaro.org>
0012 - Jingoo Han <jingoohan1@gmail.com>
0013
0014 description:
0015 Backlight devices provide backlight for different types of graphical
0016 displays. They are typically but not necessarily implemented using a white
0017 LED powered by a boost converter.
0018
0019 properties:
0020 default-brightness:
0021 description:
0022 The default brightness that should be applied to the LED by the operating
0023 system on start-up. The brightness should not exceed the brightness the
0024 LED can provide.
0025 $ref: /schemas/types.yaml#/definitions/uint32
0026
0027 max-brightness:
0028 description:
0029 Normally the maximum brightness is determined by the hardware and this
0030 property is not required. This property is used to put a software limit
0031 on the brightness apart from what the driver says, as it could happen
0032 that a LED can be made so bright that it gets damaged or causes damage
0033 due to restrictions in a specific system, such as mounting conditions.
0034 $ref: /schemas/types.yaml#/definitions/uint32
0035
0036 additionalProperties: true
