Commit ae1f74da authored by Linus Walleij's avatar Linus Walleij Committed by Lee Jones
Browse files

dt-bindings: backlight: Add some common backlight properties 



Let's use a common.yaml include for the backlight like we do with
the LEDs. The LEDs are inherently incompatible so their bindings
cannot be reused for backlight.

Cc: devicetree@vger.kernel.org
Suggested-by: default avatarSam Ravnborg <sam@ravnborg.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Reviewed-by: default avatarDaniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent b7a4f80b

Documentation/devicetree/bindings/leds/backlight/common.yaml

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# 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

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