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SubjectRe: [RFC PATCH v1 3/3] dt-binding: display: Require two rests on mantix panel
On Thu, Sep 24, 2020 at 09:38:07PM +0200, Sam Ravnborg wrote:
> Hi Guido.
>
> On Mon, Sep 21, 2020 at 06:55:52PM +0200, Guido Günther wrote:
> > We need to reset both for the panel to show an image.
> >
> > Signed-off-by: Guido Günther <agx@sigxcpu.org>
> > ---
> > .../bindings/display/panel/mantix,mlaf057we51-x.yaml | 7 +++++--
> > 1 file changed, 5 insertions(+), 2 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml b/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
> > index 937323cc9aaa..ba5a18fac9f9 100644
> > --- a/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
> > +++ b/Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
> > @@ -35,7 +35,9 @@ properties:
> > vddi-supply:
> > description: 1.8V I/O voltage supply
> >
> > - reset-gpios: true
> > + reset-gpios:
> > + minItems: 2
> > + maxItems: 2
>
> reset-gpios is, as you already wrote, defined in panel-common.yaml.
> Do not try to change it here.
> It would be much better, I think, to introduce a mantix,reset-gpios
> property.
>
> This would avoid that we had two different reset-gpios definitions.

My understanding is that this will only override the defaults defined in
panel-common.yaml. So everything else about the
panel-common.yaml#/properties/reset-gpios definition remains valid and
all this does is say that when this matched on "mantix,mlaf057we51-x",
then the "reset-gpios" property is expected to contain two entries as
opposed to the single entry that is expected by default.

Thierry
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