summaryrefslogtreecommitdiff
path: root/drivers/mmc/host/omap_hsmmc.c
diff options
context:
space:
mode:
authorBalaji T K <balajitk@ti.com>2012-04-09 10:38:33 +0400
committerChris Ball <cjb@laptop.org>2012-04-22 19:16:47 +0400
commit03b5d924b926dd994b16f30f7a13bfb71ee0f478 (patch)
tree37b5c8dec077bb04c408e4b6f4db8a9fcd2db9ab /drivers/mmc/host/omap_hsmmc.c
parentdba3c29ea4a1d5d544f59b94fd8a41662135e071 (diff)
downloadlinux-03b5d924b926dd994b16f30f7a13bfb71ee0f478.tar.xz
mmc: omap_hsmmc: add DDR support
Add Dual data rate support for omap_hsmmc. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Venkatraman S <svenkatr@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/omap_hsmmc.c')
-rw-r--r--drivers/mmc/host/omap_hsmmc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index dfa6f87b6cc2..dc41b9e4299e 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -92,6 +92,7 @@
#define MSBS (1 << 5)
#define BCE (1 << 1)
#define FOUR_BIT (1 << 1)
+#define DDR (1 << 19)
#define DW8 (1 << 5)
#define CC 0x1
#define TC 0x02
@@ -523,6 +524,10 @@ static void omap_hsmmc_set_bus_width(struct omap_hsmmc_host *host)
u32 con;
con = OMAP_HSMMC_READ(host->base, CON);
+ if (ios->timing == MMC_TIMING_UHS_DDR50)
+ con |= DDR; /* configure in DDR mode */
+ else
+ con &= ~DDR;
switch (ios->bus_width) {
case MMC_BUS_WIDTH_8:
OMAP_HSMMC_WRITE(host->base, CON, con | DW8);