[PATCH 1/2 v1] dt-bindings: backlight: Add Kinetic KTD253 bindings

[Sam Ravnborg]

Hi Linus.

On Wed, Aug 12, 2020 at 08:48:42AM +0200, Linus Walleij wrote:
> On Tue, Jul 21, 2020 at 10:32 AM Sam Ravnborg <sam at ravnborg.org> wrote:
> 
> > > +description: |
> > > +  The Kinetic Technologies KTD253 is a white LED backlight that is
> > > +  controlled by a single GPIO line. If you just turn on the backlight
> > > +  it goes to maximum backlight then you can set the level of backlight
> > > +  using pulses on the enable wire.
> >
> > No $ref for common.yaml?
> 
> Since this is a backlight, and we do not have common bindings for,
> backlight I first looked into using the LED bindings in
> ../common.yaml, but that has several problems, it cannot really
> be used for backlight. Backlight doesn't have "triggers",
> patterns, flash properties, the function is also pretty much
> evident.
> 
> So I will look into creating a new common for backlight.
Hmm, I think I looked at leds/ when I wrote that comment about
common.yaml.

Please consider Rob's comment in commit: 44e1655a444fe7a1bd81994d34c6bbb5245b9e60
("dt-bindings: backlight: Convert common backlight bindings to DT
schema")

Rob did not see the need for a common binding - but that may change as
we add more backlight bindings.

	Sam