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

[Rob Herring <robh@xxxxxxxxxx>]

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@xxxxxxxxxxxx>
> ---
>  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