diff mbox

[v2,2/7] mmc: mmci: clarify DDR timing mode between SD-UHS and eMMC

Message ID 000701cf1393$78d551c0$6a7ff540$%jun@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Seungwon Jeon Jan. 17, 2014, 2:50 p.m. UTC 
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>
---
 drivers/mmc/host/mmci.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
diff mbox

Patch

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index f320579..92d40be 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -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)
 		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;
 
 	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);
 		}
 
-	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;
 
 	/*