linux-kernel - Re: [PATCH 7/7] dt-bindings: arm64: dts: mediatek: Add sku22 for mt8183 kakadu board

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Date:   Mon, 8 Nov 2021 16:35:06 +0800
From:   Chen-Yu Tsai <wenst@...omium.org>
To:     Hsin-Yi Wang <hsinyi@...omium.org>
Cc:     Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] dt-bindings: arm64: dts: mediatek: Add sku22 for
 mt8183 kakadu board

On Mon, Nov 8, 2021 at 4:28 PM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
>
> On Mon, Nov 8, 2021 at 4:10 PM Chen-Yu Tsai <wenst@...omium.org> wrote:
> >
> > On Mon, Nov 8, 2021 at 3:29 PM Hsin-Yi Wang <hsinyi@...omium.org> wrote:
> > >
> > > Add sku22 which uses different audio codec than previous kakadu board.
> > >
> > > Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
> > > ---
> > >  Documentation/devicetree/bindings/arm/mediatek.yaml | 7 +++++--
> > >  1 file changed, 5 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/Documentation/devicetree/bindings/arm/mediatek.yaml b/Documentation/devicetree/bindings/arm/mediatek.yaml
> > > index 99e7f8e294cd03..da5f9ecc1a9b37 100644
> > > --- a/Documentation/devicetree/bindings/arm/mediatek.yaml
> > > +++ b/Documentation/devicetree/bindings/arm/mediatek.yaml
> > > @@ -161,8 +161,11 @@ properties:
> > >            - const: mediatek,mt8183
> > >        - description: Google Kakadu (ASUS Chromebook Detachable CM3)
> > >          items:
> > > -          - const: google,kakadu-rev3
> > > -          - const: google,kakadu-rev2
> > > +          - enum:
> > > +              - google,kakadu-rev2
> > > +              - google,kakadu-rev2-sku22
> > > +              - google,kakadu-rev3
> > > +              - google,kakadu-rev3-sku22
> > >            - const: google,kakadu
> > >            - const: mediatek,mt8183
> >
> > This matches
> >
> >     "google,kakadu-rev[23](-sku22)?", "google,kakadu", "mediatek,mt8183",
> >
> > which isn't what you want. You want:
> >
> >     "google,kakadu-rev3", "google,kakadu-rev2", "google,kakadu",
> >     "mediatek,mt8183"
> >
> > or
> >
> >     "google,kakadu-rev3-sku22", "google,kakadu-rev2-sku22", "google,kakadu",
> >     "mediatek,mt8183"
> >
> > I think the following is closer, but I'm not sure if nesting "items" is valid.
> >
> > items:
> >   - oneOf:
> >     - items:
> >       - const: google,kakadu-rev3-sku22
> >       - const: google,kakadu-rev2-sku22
> >     - items:
> >       - const: google,kakadu-rev3
> >       - const: google,kakadu-rev2
> >   - const: google,kakadu
> >   - const: mediatek,mt8183
> >
> How about
>
> items:
>   - enum:
>         - google,kakadu-rev2
>         - google,kakadu-rev2-sku22
>   - enum:
>         - google,kakadu-rev3
>         - google,kakadu-rev3-sku22
>   - const: google,kakadu
>    ....

This would also match:

    "google,kakadu-rev2", "google,kakadu-rev3-sku22", ...
    "google,kakadu-rev2-sku22", "google,kakadu-rev3", ...

which is not correct. Also I believe rev3 should be in front of rev2?


ChenYu