Re: [PATCH v3 3/6] dt-bindings: nvmem: mediatek: efuse: Reuse mt8186-efuse in mt8188

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On Wed, Oct 02, 2024 at 09:42:32AM +0200, AngeloGioacchino Del Regno wrote:
> Il 02/10/24 08:11, Krzysztof Kozlowski ha scritto:
> > On Wed, Oct 02, 2024 at 10:21:35AM +0800, Pablo Sun wrote:
> > > mt8188 has the same GPU speed binning efuse field just
> > > like mt8186, which requires post-processing to convert to the
> > > bit field format specified by OPP table.

What about all the other efuses? The fallback needs to be a subset of 
the 1st compatible.

> > > 
> > > Add the binding for the compatible list:
> > >    "mediatek,mt8188-efuse", "mediatek,mt8186-efuse"
> > > so mt8188 uses the same conversion.
> > > 
> > > Suggested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
> > > Signed-off-by: Pablo Sun <pablo.sun@xxxxxxxxxxxx>
> > > ---
> > >   Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml | 4 ++++
> > >   1 file changed, 4 insertions(+)
> > > 
> > > diff --git a/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml b/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> > > index 32b8c1eb4e80..70815a3329bf 100644
> > > --- a/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> > > +++ b/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> > > @@ -39,6 +39,10 @@ properties:
> > >                 - mediatek,mt8195-efuse
> > >                 - mediatek,mt8516-efuse
> > >             - const: mediatek,efuse
> > > +      - items:
> > > +          - enum:
> > > +              - mediatek,mt8188-efuse
> > > +          - const: mediatek,mt8186-efuse
> > 
> > And this is not compatible with generic one? This is confusing. Why are
> > you adding generic fallbacks if they are not valid?
> > 
> 
> It was my suggestion to start dropping the usage of the generic "mediatek,efuse"
> fallback, as I've seen multiple times feedback saying to not use generic fallbacks.
> 
> Was that wrong?

No, but any fallback seems seems a bit odd here. It's one of those 
things that's going to change with every chip.

Rob




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