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.j...@gmail.com> --- Generated a patch that applies to meta-texasinstruments as suggested by Koen in the post at [1] Changes in v2: * Bumped PR Changes in v3: * Added SOB line [1] http://www.mail-archive.com/openembedded-devel@lists.openembedded.org/msg19995.html ...mc-Adjust-dto-to-eliminate-timeout-errors.patch | 33 ++++++++++++++++++++ recipes-kernel/linux/linux-omap_2.6.39.bb | 3 +- 2 files changed, 35 insertions(+), 1 deletions(-) create mode 100644 recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch diff --git a/recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch b/recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch new file mode 100644 index 0000000..8cd314c --- /dev/null +++ b/recipes-kernel/linux/linux-omap-2.6.39/beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch @@ -0,0 +1,33 @@ +From bd0b2f97c48aa6aac0c6a494f1c6ba5af5de486b Mon Sep 17 00:00:00 2001 +From: Steve Sakoman <st...@sakoman.com> +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 + +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 9646a75..7443647 100644 +--- a/drivers/mmc/host/omap_hsmmc.c ++++ b/drivers/mmc/host/omap_hsmmc.c +@@ -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-kernel/linux/linux-omap_2.6.39.bb b/recipes-kernel/linux/linux-omap_2.6.39.bb index c92846d..a22e81f 100644 --- a/recipes-kernel/linux/linux-omap_2.6.39.bb +++ b/recipes-kernel/linux/linux-omap_2.6.39.bb @@ -7,7 +7,7 @@ COMPATIBLE_MACHINE = "(beagleboard)" # The main PR is now using MACHINE_KERNEL_PR, for omap3 see conf/machine/include/omap3.inc SRCREV_pn-${PN} = "v2.6.39" -MACHINE_KERNEL_PR_append = "n" +MACHINE_KERNEL_PR_append = "o" FILESPATHPKG_prepend = "linux-omap-2.6.39:" @@ -54,6 +54,7 @@ SRC_URI_append = " \ file://beagle/0004-OMAP3-beagle-add-regulators-for-camera-interface.patch \ file://beagle/0005-OMAP3-beagle-HACK-add-in-1GHz-OPP.patch \ file://beagle/0006-OMAP3-BEAGLE-fix-RTC.patch \ + file://beagle/0007-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch \ \ file://camera/0001-Add-driver-for-Aptina-Micron-mt9p031-sensor.patch \ file://camera/0002-v4l-Add-mt9v032-sensor-driver.patch \ -- 1.7.0.4 _______________________________________________ Openembedded-devel mailing list Openembedded-devel@lists.openembedded.org http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/openembedded-devel
