Re: [PATCH v2 1/2] dt-bindings: input: touchscreen: Add ilitek 9882T touchscreen chip

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On Tue, Jun 06, 2023 at 10:06:05AM +0800, cong yang wrote:
> Hi,Conor,
> 
> On Mon, Jun 5, 2023 at 6:20 PM Conor Dooley <conor@xxxxxxxxxx> wrote:
> >
> > Hey Cong Yang,
> >
> > On Mon, Jun 05, 2023 at 02:05:23PM +0800, Cong Yang wrote:
> > > Add an ilitek touch screen chip ili9882t.
> >
> > Could you add a comment here mentioning the relationship between these
> > chips?
> 
> Okay, I will add in V3 version.
> 
> > On Mon, Jun 05, 2023 at 02:05:23PM +0800, Cong Yang wrote:
> >
> > > Signed-off-by: Cong Yang <yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> > > ---
> > >  .../bindings/input/elan,ekth6915.yaml         | 23 ++++++++++++++++---
> > >  1 file changed, 20 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
> > > index 05e6f2df604c..f0e7ffdce605 100644
> > > --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
> > > +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
> > > @@ -15,11 +15,14 @@ description:
> > >
> > >  properties:
> > >    compatible:
> > > -    items:
> > > -      - const: elan,ekth6915
> > > +    enum:
> > > +      - elan,ekth6915
> > > +      - ilitek,ili9882t
> > >
> > >    reg:
> > > -    const: 0x10
> > > +    enum:
> > > +      - 0x10
> > > +      - 0x41
> >
> > Is 0x10 only valid for the elan,ekth6915 & 0x41 for the ilitek one?
> > If so, please add some enforcement of the values based on the
> > compatible.
> 
> I don't think 0x10 is the only address for ekth6915,(nor is 0x41 the
> only address for ili9882t). It depends on the hardware design.

I'd just drop the values as we don't typically enforce 'reg' values.

Rob



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