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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>
Andrew Gabbasov 10 éve
szülő
commit
201d5ac438
1 módosított fájl, 1 hozzáadás és 1 törlés
  1. 1 1
      drivers/mmc/mmc.c

+ 1 - 1
drivers/mmc/mmc.c

@@ -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 {