[PATCH v2 6/6] mmc: core: mmc DDR mode should not depend on UHS_DDR50
From: Ulf Hansson <hidden>
Date: 2013-10-30 22:36:36
Also in:
linux-mmc
On 30 October 2013 15:09, Dong Aisheng [off-list ref] wrote:
The MMC_CAP_UHS_DDR50 must work on 1.8v. However, the eMMC DDR mode can work on either 1.8v or 3.3v and should not depend on UHS_DDR50. So get rid of this limitation to let controller without 1.8v signal voltage support can also work for eMMC DDR mode if it claims. Signed-off-by: Dong Aisheng <redacted>
Acked-by: Ulf Hansson <redacted>
quoted hunk ↗ jump to hunk
--- drivers/mmc/core/mmc.c | 8 ++------ 1 files changed, 2 insertions(+), 6 deletions(-)diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index f631f5a..98e9eb0 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c@@ -1119,14 +1119,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, */ if (mmc_card_highspeed(card)) { if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) - && ((host->caps & (MMC_CAP_1_8V_DDR | - MMC_CAP_UHS_DDR50)) - == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) + && (host->caps & MMC_CAP_1_8V_DDR)) ddr = MMC_1_8V_DDR_MODE; else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) - && ((host->caps & (MMC_CAP_1_2V_DDR | - MMC_CAP_UHS_DDR50)) - == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) + && (host->caps & MMC_CAP_1_2V_DDR)) ddr = MMC_1_2V_DDR_MODE; } --1.7.2.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo at vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html