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mmc: mmci: clarify DDR timing mode between SD-UHS and eMMC

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Added MMC_DDR52 as eMMC's DDR mode distinguished from SD-UHS.

CC: Russell King <linux@arm.linux.org.uk>
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
This commit is contained in:
Seungwon Jeon 2014-03-14 21:12:13 +09:00 committed by Chris Ball
parent 79f7ae7c45
commit 6dad6c9594
1 changed files with 4 additions and 2 deletions
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6
drivers/mmc/host/mmci.c
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@ -299,7 +299,8 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8) if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8)
clk |= MCI_ST_8BIT_BUS; clk |= MCI_ST_8BIT_BUS;
if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50) if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 ||
host->mmc->ios.timing == MMC_TIMING_MMC_DDR52)
clk |= MCI_ST_UX500_NEG_EDGE; clk |= MCI_ST_UX500_NEG_EDGE;
mmci_write_clkreg(host, clk); mmci_write_clkreg(host, clk);
@ -784,7 +785,8 @@ static void mmci_start_data(struct mmci_host *host, struct mmc_data *data)
mmci_write_clkreg(host, clk); mmci_write_clkreg(host, clk);
} }
if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50) if (host->mmc->ios.timing == MMC_TIMING_UHS_DDR50 ||
host->mmc->ios.timing == MMC_TIMING_MMC_DDR52)
datactrl |= MCI_ST_DPSM_DDRMODE; datactrl |= MCI_ST_DPSM_DDRMODE;
/* /*