linux-kernel - Re: [PATCH 1/6] dt-bindings: spi: Add compatible for Mediatek IPM IP with single mode

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Date:   Mon, 14 Feb 2022 09:49:06 +0800
From:   Leilk Liu <leilk.liu@...iatek.com>
To:     Rob Herring <robh@...nel.org>
CC:     Mark Brown <broonie@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-spi@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH 1/6] dt-bindings: spi: Add compatible for Mediatek IPM
 IP with single mode

On Fri, 2022-02-11 at 10:55 -0600, Rob Herring wrote:
> On Wed, Feb 09, 2022 at 07:19:33PM +0800, Leilk Liu wrote:
> > This commit adds dt-binding documentation for
> > Mediatek SPI IPM IP with single mode.
> > 
> > Signed-off-by: Leilk Liu <leilk.liu@...iatek.com>
> > ---
> >  Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml | 1
> > +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/spi/mediatek,spi-
> > mt65xx.yaml b/Documentation/devicetree/bindings/spi/mediatek,spi-
> > mt65xx.yaml
> > index bfa44acb1bdd..0a2fc0404cb3 100644
> > --- a/Documentation/devicetree/bindings/spi/mediatek,spi-
> > mt65xx.yaml
> > +++ b/Documentation/devicetree/bindings/spi/mediatek,spi-
> > mt65xx.yaml
> > @@ -41,6 +41,7 @@ properties:
> >                - mediatek,mt8135-spi
> >                - mediatek,mt8173-spi
> >                - mediatek,mt8183-spi
> > +              - mediatek,ipm-spi-single
> 
> Is IPM an SoC? Compatible strings should be SoC specific or whatever 
> granularity could have a unique errata.
> 
IPM is an version of SPI ip, we use this IP with ICs now. So I define a
compatible strings "mediatek,ipm-spi-single", then I can reuse this
compatible strings with many ICs.

> Rob