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Commit 6daa7778 authored by Seungwon Jeon's avatar Seungwon Jeon Committed by Chris Ball
Browse files

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: default avatarSeungwon Jeon <tgih.jun@samsung.com>
Acked-by: default avatarWill Newton <will.newton@imgtec.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 7435bb79

drivers/mmc/host/dw_mmc.c

+2 −2
Original line number Diff line number Diff line
@@ -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;