| # 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 |
