On Wed, Aug 19, 2020 at 10:51:48PM +0200, Linus Walleij wrote: > 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@xxxxxxxxxxxxxxx > Suggested-by: Sam Ravnborg <sam@xxxxxxxxxxxx> > Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Reviewed-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx> > --- > ChangeLog v2->v3: > - Drop the | for the description > - Drop the "default-on" property, we're not using it. > - Drop the minimum 0 for unsigned u32:s > ChangeLog v1->v2: > - New patch as suggested by Sam. > --- > .../bindings/leds/backlight/common.yaml | 34 +++++++++++++++++++ > 1 file changed, 34 insertions(+) > create mode 100644 Documentation/devicetree/bindings/leds/backlight/common.yaml > > diff --git a/Documentation/devicetree/bindings/leds/backlight/common.yaml b/Documentation/devicetree/bindings/leds/backlight/common.yaml > new file mode 100644 > index 000000000000..4e7e95e331a5 > --- /dev/null > +++ b/Documentation/devicetree/bindings/leds/backlight/common.yaml > @@ -0,0 +1,34 @@ > +# 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@xxxxxxxxxx> > + - Daniel Thompson <daniel.thompson@xxxxxxxxxx> > + - Jingoo Han <jingoohan1@xxxxxxxxx> > + > +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 > -- > 2.26.2 >
