mmc: core: Put eMMC in Sleep mode before suspend

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Put MMC to sleep if it supports SLEEP/AWAKE (CMD5) in the mmc suspend
so that Vcc (NAND core) can be cut to minimize power consumption.
eMMC put into SLEEP can respond to CMD0 or H/W reset or CMD5.
Current implemention on resume from suspend relies on CMD0 in
mmc_init_card to get out of SLEEP mode.

Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Venkatraman S <svenkatr@ti.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

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Balaji T K 2011-09-08 22:08:39 +05:30 • committed by Chris Ball

parent 6fe47179a0

commit c3805467aa

1 changed files with 7 additions and 2 deletions

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drivers/mmc/core/mmc.c

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