diff options
| author |   Joel A Fernandes <agnel.joel@gmail.com> | 2011-07-26 15:25:03 +0000 |
|---|---|---|
| committer |   Koen Kooi <koen@openembedded.org> | 2011-07-26 09:48:21 +0200 |
| commit | 630344479c8f83bebbfd20e73c692b4520d44836 (patch) | |
| tree | 2451b8666bf56605297ce22f4fd9c555f769c4d4 /recipes/linux | |
| parent | e07647d8ab939d2e7485ec19219a20358b26382c (diff) | |
| download | openembedded-630344479c8f83bebbfd20e73c692b4520d44836.tar.gz | |
linux-omap-psp: Fix MMC timeout errors
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 proposed by Sukumar Ghoral of TI.
Signed-off-by: Joel A Fernandes <agnel.joel@gmail.com>
Signed-off-by: Koen Kooi <koen@openembedded.org>
Diffstat (limited to 'recipes/linux')
| -rw-r--r-- | recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch | 41 | ||||
| -rw-r--r-- | recipes/linux/linux-omap-psp_2.6.32.bb | 2 |
2 files changed, 27 insertions, 16 deletions
diff --git a/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch b/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch index 4867d3f761..8cd314c6fb 100644 --- a/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch +++ b/recipes/linux/linux-omap-psp-2.6.32/0047-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch @@ -1,22 +1,33 @@ -From 26a79f408bd41ad7b4a47f2683909d3fc1575eab Mon Sep 17 00:00:00 2001 +From bd0b2f97c48aa6aac0c6a494f1c6ba5af5de486b Mon Sep 17 00:00:00 2001 From: Steve Sakoman <steve@sakoman.com> -Date: Wed, 12 Jan 2011 05:54:55 -0800 -Subject: [PATCH] omap: mmc: Adjust dto to eliminate timeout errors +Date: Mon, 18 Jul 2011 23:13:41 -0500 +Subject: [PATCH] omap_hsmmc: Set dto to max value of 14 to avoid SD Card timeouts -A number of SD card types were experiencing timeout errors. This -could also lead to data corruption in some cases. +This fixes MMC errors due to timeouts on certain SD Cards following suggestions +to set dto to 14 by Jason Kridner and Steven Kipisz -This fix proposed by Sukumar Ghoral of TI. +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 9646a75..ef458d6 100644 +index 9646a75..7443647 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c -@@ -1032,6 +1032,7 @@ static void set_data_timeout(struct omap_hsmmc_host *host, - cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd); - timeout = timeout_ns / cycle_ns; - timeout += timeout_clks; -+ timeout *= 2; - if (timeout) { - while ((timeout & 0x80000000) == 0) { - dto += 1; +@@ -1049,6 +1049,9 @@ 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); +-- +1.7.0.4 + diff --git a/recipes/linux/linux-omap-psp_2.6.32.bb b/recipes/linux/linux-omap-psp_2.6.32.bb index 91de194c79..31de659564 100644 --- a/recipes/linux/linux-omap-psp_2.6.32.bb +++ b/recipes/linux/linux-omap-psp_2.6.32.bb @@ -9,7 +9,7 @@ COMPATIBLE_MACHINE = "am3517-crane|beagleboard|omap3evm|am3517-evm|dm37x-evm|am3 SRCREV = "5fc29e7b2a76a64a739f857858ef0b98294aa155" # The main PR is now using MACHINE_KERNEL_PR, for omap3 see conf/machine/include/omap3.inc -MACHINE_KERNEL_PR_append = "f+gitr${SRCREV}" +MACHINE_KERNEL_PR_append = "g+gitr${SRCREV}" SRC_URI = "git://arago-project.org/git/projects/linux-omap3.git;protocol=http;branch=master \ file://0001-Added-Crane-Board-support.patch \ |