On Wed, Aug 28, 2013 at 11:22:58AM -0400, Kevyn-Alexandre Paré wrote: > We try multiple of our system ( Different micro SD from SanDisk + > Overo with OMAP3) and they are all doing this with the SanDisk 64GB, > 32GB : > http://www.sandisk.com/products/memory-cards/microsd/ultra-class10-for-android/?capacity=64GB > > The problem seem to be easier to reproduce when we just flash the > micro SD (partition, format & copy rootfs) at it first boot. > Also, when we let the system down for a couple of days and then > sometimes we need to reboot the system multiple times before it fall > back alright. > > We found a old patch that was simply increasing the timeout of the host: > http://cgit.openembedded.org/cgit.cgi/openembedded/tree/recipes/linux/linux-omap-2.6.39/sakoman/0024-omap-mmc-Adjust-dto-to-eliminate-timeout-errors.patch?h=org.openembedded.dev > > By settings the timeout to zero I reproduce kind of the same timeout > error at every boot. That was expected since I don't let enough time > to the controller to respond... > > Could the mix of that MMC controller and these card is not optimal? Is > the driver fully supporting the UHS-I speed grade? I've cc'ed Arnd Bergman who works at Linaro; I suspect that if he doesn't know the answer off the top of his head, he can probably direct you to someone who will. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
