[PATCH 1/2] dt-bindings: mmc: add no-mmc-hs400 flag

Rob Herring robh at kernel.org
Mon May 10 09:16:46 PDT 2021


On Sat, 08 May 2021 22:56:57 +0200, Lucas Stach wrote:
> HS400 requires a data strobe line in addition to the other MMC signal
> lines, so if a board design neglects to wire up this signal, HS400 mode
> is no available, even if both the controller and the eMMC are claiming
> to support this mode. Add a DT flag to allow boards to disable the
> HS400 support in this case.
> 
> Signed-off-by: Lucas Stach <dev at lynxeye.de>
> ---
>  Documentation/devicetree/bindings/mmc/mmc-controller.yaml | 5 +++++
>  1 file changed, 5 insertions(+)
> 

Acked-by: Rob Herring <robh at kernel.org>



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