mmc: core: enable CMD19 tuning for DDR50 mode

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As SD Specifications Part1 Physical Layer Specification Version
3.01 says, CMD19 tuning is available for unlocked cards in transfer
state of 1.8V signaling mode. The small difference between v3.00
and 3.01 spec means that CMD19 tuning is also available for DDR50
mode.

Signed-off-by: Weijun Yang <york.yang@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

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Weijun Yang 2015-10-04 12:04:11 +00:00 • committed by Ulf Hansson

parent b093410c9a

commit 4324f6de6d

1 changed files with 18 additions and 2 deletions

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20

drivers/mmc/core/sd.c

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