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

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Message-ID: <ZwPHp9l3Fx7f2lI4@makrotopia.org>
Date: Mon, 7 Oct 2024 12:36:07 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: Frank Wunderlich <linux@...web.de>,
	Chaotian Jing <chaotian.jing@...iatek.com>,
	Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Wenbin Mei <wenbin.mei@...iatek.com>,
	Frank Wunderlich <frank-w@...lic-files.de>,
	linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, john@...ozen.org,
	eladwf@...il.com, ansuelsmth@...il.com
Subject: Re: [PATCH v2 1/2] dt-bindings: mmc: mtk-sd: Add mt7988 SoC

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@...lic-files.de>
> > 
> > Add binding definitions for mmc on MT7988 SoC.
> > 
> > Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
> > ---
> > 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.