I am seeing some very strange things. When I do Dd if=/dev/zero of=/dev/mmcblk0 bs=512k count=200 (it fails when writing about 100MB of data with a crc error) When I do Dd if=/dev/zero of=/dev/mmcblk0 bs=64k count=3000 (it fails only after 125 MB of data with a crc error) When I do Dd if=/dev/zero of=/dev/mmcblk0 bs=32k count=16000 (it fails when I try to write 500MB of data, but good until 375MB of data) Any ideas what I am running into? Thanks, Praveen On Wed, Nov 2, 2011 at 4:51 PM, Praveen Krishnan <praveen.gk@xxxxxxxxx> wrote: > Hello all, > > I am working on getting the DDR50 mode up and running for the eMMC > cards. I am running into some weird CRC error cases. Initially, I > thought that everything works fine, but when I stress test it with > large amounts of data (more than 100MB of writes), I notice that my > console is spewed with venomous error messages. I get a CRC error and > every now and then, I also see this message "Got data interrupt even > though no data operation was in progress" and "Buffer I/O error" and > so on. > > Can anybody give any pointers as to what could be causing this? > > Thanks a lot, > Praveen > -- 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
