SD power-control necessary?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux