Re: [PATCH v2 1/2] dt-bindings: mmc: mtk-sd: Add mt7988 SoC

[Daniel Golle]

On Mon, Oct 07, 2024 at 10:00:49AM +0200, AngeloGioacchino Del Regno wrote:
> Il 06/10/24 17:34, Frank Wunderlich ha scritto:
> > From: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
> > 
> > Add binding definitions for mmc on MT7988 SoC.
> > 
> > Signed-off-by: Frank Wunderlich <frank-w@xxxxxxxxxxxxxxx>
> > ---
> > v2:
> > - fixed minItems to 4
> > ---
> >   .../devicetree/bindings/mmc/mtk-sd.yaml       | 24 +++++++++++++++++++
> >   1 file changed, 24 insertions(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > index c532ec92d2d9..7380f72ea189 100644
> > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
> > @@ -21,6 +21,7 @@ properties:
> >             - mediatek,mt7620-mmc
> >             - mediatek,mt7622-mmc
> >             - mediatek,mt7986-mmc
> > +          - mediatek,mt7988-mmc
> >             - mediatek,mt8135-mmc
> >             - mediatek,mt8173-mmc
> >             - mediatek,mt8183-mmc
> > @@ -263,6 +264,29 @@ allOf:
> >               - const: bus_clk
> >               - const: sys_cg
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - mediatek,mt7988-mmc
> 
> Are you really sure that you can't reuse the MT7986 compatible?

In OpenWrt we are doing exactly that. The MMC controller of
MT7988 (and MT7981) seems 100% the same as in MT7986 and hence
works just fine with the mediatek,mt7986-mmc compatible.