| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) | |
| %YAML 1.2 | |
| --- | |
| $id: http://devicetree.org/schemas/leds/backlight/common.yaml# | |
| $schema: http://devicetree.org/meta-schemas/core.yaml# | |
| title: Common backlight properties | |
| maintainers: | |
| - Lee Jones <lee.jones@linaro.org> | |
| - Daniel Thompson <daniel.thompson@linaro.org> | |
| - Jingoo Han <jingoohan1@gmail.com> | |
| description: | |
| Backlight devices provide backlight for different types of graphical | |
| displays. They are typically but not necessarily implemented using a white | |
| LED powered by a boost converter. | |
| properties: | |
| default-brightness: | |
| description: | |
| The default brightness that should be applied to the LED by the operating | |
| system on start-up. The brightness should not exceed the brightness the | |
| LED can provide. | |
| $ref: /schemas/types.yaml#/definitions/uint32 | |
| max-brightness: | |
| description: | |
| Normally the maximum brightness is determined by the hardware and this | |
| property is not required. This property is used to put a software limit | |
| on the brightness apart from what the driver says, as it could happen | |
| that a LED can be made so bright that it gets damaged or causes damage | |
| due to restrictions in a specific system, such as mounting conditions. | |
| $ref: /schemas/types.yaml#/definitions/uint32 | |
| additionalProperties: true |