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mmc: dw_mmc: Fix DDR mode support. 

Host driver can't get a hint of DDR mode through ios->ddr flag anymore.
ios->timing is currently used to inform DDR mode as a substitute.
And capability of MMC_CAP_MMC_HIGHSPEED is added for DDR support.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Seungwon Jeon 2011-08-05 12:35:03 +09:00 committed by Chris Ball
parent 7435bb7950
commit 6daa777866
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/host/dw_mmc.c
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@ -699,7 +699,7 @@ static void dw_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
/* DDR mode set */
if (ios->ddr) {
if (ios->timing == MMC_TIMING_UHS_DDR50) {
regs = mci_readl(slot->host, UHS_REG);
regs |= (0x1 << slot->id) << 16;
mci_writel(slot->host, UHS_REG, regs);
@ -1646,7 +1646,7 @@ static int __init dw_mci_init_slot(struct dw_mci *host, unsigned int id)
mmc->caps |= MMC_CAP_4_BIT_DATA;
if (host->pdata->quirks & DW_MCI_QUIRK_HIGHSPEED)
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED;
#ifdef CONFIG_MMC_DW_IDMAC
mmc->max_segs = host->ring_size;