Re: [PATCH 1/2] dt-bindings: mmc: add an option to disable HS400 for fsl

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On Sun, 29 Nov 2020 at 21:31, Adrien Grassein <adrien.grassein@xxxxxxxxx> wrote:
>
> Add an option to disable the hs400 support in the fsl esdhc
> driver.
>
> Signed-off-by: Adrien Grassein <adrien.grassein@xxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml
> index e71d13c2d109..070b40ae8c44 100644
> --- a/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml
> +++ b/Documentation/devicetree/bindings/mmc/fsl-imx-esdhc.yaml
> @@ -101,6 +101,10 @@ properties:
>        If not use this property, driver default set the delay target to value 7.
>        Only eMMC HS400 mode need to take care of this property.
>      default: 0
> +  fsl,no-mmc-hs400:
> +    description: |
> +      boolean, if present, indicate to disable mmc-hs400 support.
> +    type: boolean

You need to disable hs400, because the sdhci capability register
wrongly claims it to be supported, right?

May I suggest using the DT property "sdhci-caps-mask" instead?

Kind regards
Uffe



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