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mmc: Fix Dual Data Rate capability recognition 

Since the driver doesn't work in 1.2V or 1.8V signaling level modes,
Dual Data Rate mode can be supported by the driver only if it is supported
by the card in regular 3.3V mode. So, check for a particular single
bit in card type field.

Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
This commit is contained in:
Andrew Gabbasov 2014-12-01 06:59:10 -06:00 committed by Pantelis Antoniou
parent 786e8f818c
commit 201d5ac438
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/mmc.c
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@ -519,7 +519,7 @@ static int mmc_change_freq(struct mmc *mmc)
/* High Speed is set, there are two types: 52MHz and 26MHz */
if (cardtype & EXT_CSD_CARD_TYPE_52) {
if (cardtype & EXT_CSD_CARD_TYPE_DDR_52)
if (cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
mmc->card_caps |= MMC_MODE_DDR_52MHz;
mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
} else {