From e099fdb60eae41faea813fd1098af28b38f050d1 Mon Sep 17 00:00:00 2001 From: Steve Sakoman Date: Mon, 18 Jul 2011 23:13:41 -0500 Subject: [PATCH 16/56] omap_hsmmc: Set dto to max value of 14 to avoid SD Card timeouts This fixes MMC errors due to timeouts on certain SD Cards following suggestions to set dto to 14 by Jason Kridner and Steven Kipisz Details of the issue: http://talk.maemo.org/showthread.php?p=1000707#post1000707 This fix was originally proposed by Sukumar Ghoral of TI. --- drivers/mmc/host/omap_hsmmc.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 1f938d9..ace26f7 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1542,6 +1542,9 @@ static void set_data_timeout(struct omap_hsmmc_host *host) /* Use the maximum timeout value allowed in the standard of 14 or 0xE */ dto = 14; + /* Set dto to max value of 14 to avoid SD Card timeouts */ + dto = 14; + reg &= ~DTO_MASK; reg |= dto << DTO_SHIFT; OMAP_HSMMC_WRITE(host->base, SYSCTL, reg); -- 1.7.7.6