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SubjectRe: [PATCH v2 2/3] dt-bindings: backlight: add lm3630a bindings
On Tue, Apr 02, 2019 at 07:56:55AM -0500, Dan Murphy wrote:
> This would connect control bank B to control bank A. Or just use a flag to denote to connect them
> and not use led-sources. But led-sources is the property of choice.
>
> led@0 {
> reg = <0>;
> led-sources = < 0 1 >;
> label = "main-lcd";
> default-brightness = <200>;
> max-brightness = <255>;
> };

OK, I see. I wondered how we could do that in device tree.

> > + properties:
> > + label:
> > + description: |
> > + The label for this LED. If omitted, the label is taken from the node
> > + name (excluding the unit address). It has to uniquely identify a
> > + device, i.e. no other LED class device can be assigned the same label.
> > +
> > + led-sources:
> > + description: |
> > + List of device current outputs the LED is connected to.
> > + allOf:
> > + - $ref: /schemas/types.yaml#/definitions/uint32-array
> > + - minItems: 1
> > + maxItems: 2
> > + items:
> > + minimum: 0
> > + maximum: 1
> > +
>
> label and led-sources are already defined in the common.txt no need to redefine them here.

If I'm going to use the new-style bindings, then I'll need to convert
common.txt over to use the new format as well so that the automated
schema validations will work. I'm willing to do that work if there is
interest from the LED / backlight maintainers. The main issue is that
there are 62 references to the file common.txt in the directory
Documentation/devicetree/bindings/leds/. Would the maintainers prefer:

- Once common.txt is converted to common.yaml, make common.txt only
have a line stating that the common bindings were moved into
common.yaml. We can remove this file once all of the other bindings
are converted to the new-style format.

- Update all references to common.txt to common.yaml. (1 patch or 62
patches?)

- Or, just go with the older-style binding format for now.

Thanks Dan for your other comments. They make sense and I'll incorporate
those changes into my next version.

Brian

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