From: Venkatraman S <svenkatr@ti.com>
To: linux-mmc@vger.kernel.org, linux-omap@vger.kernel.org
Cc: cjb@laptop.org, balajitk@ti.com, balbi@ti.com
Subject: [PATCH RESEND 2/8] mmc: omap: add DDR support to omap_hsmmc
Date: Thu, 15 Mar 2012 20:03:36 +0530 [thread overview]
Message-ID: <1331822022-26714-3-git-send-email-svenkatr@ti.com> (raw)
In-Reply-To: <1331822022-26714-1-git-send-email-svenkatr@ti.com>
From: Balaji T K <balajitk@ti.com>
Add Dual data rate support for omap_hsmmc
Signed-off-by: Balaji T K <balajitk@ti.com>
---
drivers/mmc/host/omap_hsmmc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index b1e9be7..db8af43 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);
--
1.7.10.rc0.41.gfa678
next prev parent reply other threads:[~2012-03-15 14:34 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-15 14:33 [PATCH 0/8][git pull] mmc: omap: Assorted fixes for 3.4 merge window Venkatraman S
2012-03-15 14:33 ` [PATCH RESEND 1/8] mmc: omap: Enable Auto CMD12 Venkatraman S
2012-03-15 14:54 ` Felipe Balbi
2012-03-15 14:57 ` Felipe Balbi
2012-03-16 5:25 ` S, Venkatraman
2012-03-15 14:33 ` Venkatraman S [this message]
2012-03-15 14:33 ` [PATCH RESEND 3/8] mmc: omap: use runtime put sync in probe error patch Venkatraman S
2012-03-15 14:58 ` Felipe Balbi
2012-03-15 14:33 ` [PATCH RESEND 4/8] mmc: omap: context save after enabling runtime pm Venkatraman S
2012-03-15 14:59 ` Felipe Balbi
2012-03-15 15:12 ` Shubhrajyoti
2012-03-16 13:32 ` T Krishnamoorthy, Balaji
2012-03-15 14:33 ` [PATCH RESEND 5/8] mmc: host: omap_hsmmc: trivial cleanups Venkatraman S
2012-03-15 14:33 ` [PATCH RESEND 6/8] mmc: host: omap_hsmmc: make it behave well as a module Venkatraman S
2012-03-15 14:33 ` [PATCH RESEND 7/8] mmc: host: omap_hsmmc: convert to module_platform_driver Venkatraman S
2012-03-15 14:33 ` [PATCH RESEND 8/8] mmc: omap4: hsmmc: fix module re-insertion Venkatraman S
2012-03-15 15:04 ` Felipe Balbi
2012-03-16 10:32 ` S, Venkatraman
2012-03-16 10:38 ` Felipe Balbi
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