Re: [PATCH v10 2/6] dt-bindings: mmc: Add reset-card-at-resume property
From: Krzysztof Kozlowski
Date: Tue Oct 27 2026 - 11:39:04 EST
On 27/10/2026 15:40, Ulf Hansson wrote:
> From: Kamal Dasu <kamal.dasu@xxxxxxxxxxxx>
>
> 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>
Incomplete DCO, missing DT list, so not checked by automation.
Please kindly resend and include all necessary To/Cc entries.
Best regards,
Krzysztof