Re: [PATCH v6 2/3] dt-bindings: mmc: Add reset-card-at-resume property

From: Krzysztof Kozlowski

Date: Wed Aug 05 2026 - 02:59:38 EST


On Tue, Aug 04, 2026 at 04:38:17PM -0400, Kamal Dasu wrote:
> On some platforms, firmware or other hardware accesses the card
> during suspend/resume, before the kernel's own resume path has run,
> leaving the card in a state the kernel can no longer assume it knows.
> Add a flag property so such boards can tell the mmc core the card
> needs to be reset before it can be used again.
>
> This is expected to be paired with keep-power-in-suspend on boards
> whose firmware needs the card to stay powered and live throughout
> suspend: since the card is never power-cycled, nothing else would
> force it back to a known state on resume.
>
> Signed-off-by: Kamal Dasu <kamal.dasu@xxxxxxxxxxxx>

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>

Best regards,
Krzysztof