[PATCH v2 3/3] dt-bindings: display: convert panel-dpi to DT schema

[Sam Ravnborg]

Hi Rob.

> > +
> > +properties:
> > +  compatible:
> > +    contains:
> > +      const: panel-dpi
> > +    description:
> > +      Shall contain "panel-dpi" in addition to an optional panel-specific
> > +      compatible string defined in individual panel bindings.
> > +      "panel-dpi" can be used alone, thus no dedicated binding file
> > +      is required for each and every panel.
> 
> While this has occurred, I don't think the schema should allow it. I
> think a 'minItems: 2' should be added here.
> 
> AFAIK, MIPI DPI just defines a spec for what already existed. Maybe it
> constrains things somewhat, but to the extent why we require a panel
> specific compatible in the first place? Doubtful...

You triggered me to re-read some old thread about this.
And I think I got it now.

Based on a proposal you made some weeks ago I did it like this:
properties:
  compatible:
    description:
      Shall contain a panel specific compatible and "panel-dpi"
      in that order.
    items:
      - {}
      - const: panel-dpi

So no constraints on the panel specific compatible, expect that it is present.
And panel-dpi must be listed as the second compatible.

Updated the example too.
Will post a v3.

Thanks!

	Sam