Hi Ted, On Tue, Aug 27, 2013 at 6:01 PM, Theodore Ts'o <tytso@xxxxxxx> wrote: > On Tue, Aug 27, 2013 at 05:47:22PM -0400, Kevyn-Alexandre Paré wrote: >> mmcblk0: error -110 sending status command, retrying >> mmcblk0: error -110 sending status command, retrying >> mmcblk0: error -110 sending status command, aborting > > This looks like a hardware problem; either with the MMC reader, or the > MMC/SD card. That's what I thought, thanks. > > Can you try swapping out the hardware and see if the problem goes > away? 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? Regards, -KA > > - 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
