edd293e70de75aada6fd55418d3bd9ac598d355a
[glsdk/meta-ti-glsdk.git] / recipes-kernel / linux / linux-ti33x-psp-3.2 / 0018-omap_hsmmc-Set-dto-to-max-value-of-14-to-avoid-SD-Ca.patch
1 From 05698cd9793d58226c5d5a986537aaf906433851 Mon Sep 17 00:00:00 2001
2 From: Steve Sakoman <steve@sakoman.com>
3 Date: Mon, 18 Jul 2011 23:13:41 -0500
4 Subject: [PATCH 18/21] omap_hsmmc: Set dto to max value of 14 to avoid SD Card timeouts
6 This fixes MMC errors due to timeouts on certain SD Cards following suggestions
7 to set dto to 14 by Jason Kridner and Steven Kipisz
9 Details of the issue:
10 http://talk.maemo.org/showthread.php?p=1000707#post1000707
12 This fix was originally proposed by Sukumar Ghoral of TI.
13 ---
14 drivers/mmc/host/omap_hsmmc.c | 3 +++
15 1 files changed, 3 insertions(+), 0 deletions(-)
17 diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
18 index 703013c..554237f 100644
19 --- a/drivers/mmc/host/omap_hsmmc.c
20 +++ b/drivers/mmc/host/omap_hsmmc.c
21 @@ -1562,6 +1562,9 @@ static void set_data_timeout(struct omap_hsmmc_host *host,
22 dto = 14;
23 }
25 + /* Set dto to max value of 14 to avoid SD Card timeouts */
26 + dto = 14;
27 +
28 reg &= ~DTO_MASK;
29 reg |= dto << DTO_SHIFT;
30 OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);
31 --
32 1.7.2.5