linux-kernel - Re: [PATCH V2 3/6] dt-bindings: spi: Add compatible for Mediatek IPM IP with quad mode

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Date:   Fri, 25 Feb 2022 13:01:44 -0600
From:   Rob Herring <robh@...nel.org>
To:     Leilk Liu <leilk.liu@...iatek.com>
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 V2 3/6] dt-bindings: spi: Add compatible for Mediatek IPM
 IP with quad mode

On Mon, Feb 21, 2022 at 12:07:14PM +0800, Leilk Liu wrote:
> This patch adds dt-binding documentation for Mediatek SPI IPM IP with
> quad 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 0a2fc0404cb3..241c0f5880d3 100644
> --- a/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml
> +++ b/Documentation/devicetree/bindings/spi/mediatek,spi-mt65xx.yaml
> @@ -42,6 +42,7 @@ properties:
>                - mediatek,mt8173-spi
>                - mediatek,mt8183-spi
>                - mediatek,ipm-spi-single
> +              - mediatek,ipm-spi-quad

Can't you use the existing width properties to distinguish? Or is the 
programming not a superset?

Is 'ipm' an SoC? If not, these need to be SoC specific.

Rob