Hello,

Maybe a stupid question, but when designing new hardware with a slot
for an sd-card, how essential is it that the driver is able to power off/on
the card?

I would say essential, because I've seen sd-cards in a state in which they
didn't respond to MMC_GO_IDLE_STATE anymore, until they were re-inserted.

Can anyone shed a light on this? How could an sd-card get into such a state?

Will the mmc driver fall back to mmc_rescan() after an initialized card
becomes non-responsive?

Thanks, Hein
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