From d12058d27dddf60b36f5b2142ee999e55bddfff6 Mon Sep 17 00:00:00 2001 From: Steve Sakoman Date: Mon, 18 Jul 2011 23:13:41 -0500 Subject: [PATCH 38/38] 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 35505bd..0be77ec 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1574,6 +1574,9 @@ static void set_data_timeout(struct omap_hsmmc_host *host, 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); -- 1.7.7.5