Jaehoon Chung wrote: > On 02/13/2012 02:03 AM, Chris Ball wrote: > > > Hi, > > > > I've created a repository for userspace mmc tools now: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc-utils.git > > > > At the moment the only commands supported are Johan Rudholm's extcsd > > write-protect commands, exposed as: > > > > ./mmc extcsd read /dev/mmcblkX > > ./mmc extcsd write /dev/mmcblkX > > > > Johan, when I try running these I'm seeing: > > > > octavius:cjb~/git/mmc-utils % sudo ./mmc extcsd read /dev/mmcblk0 > > sdhci-pci 0000:0d:00.0: mmc_blk_ioctl_cmd: cmd error -110 > > ioctl: Connection timed out > > Could not read EXT_CSD from /dev/mmcblk0 > > I tested with SD and eMMC. > In eMMC case.. > > /opt/home/root # mmc extcsd read /dev/mmcblk0 > Power ro locking: possible > Permanent ro locking: possible > ro lock status: not locked > > But In SD card, > s3c-sdhci s3c-sdhci.2: mmc_blk_ioctl_cmd: cmd error -110 > ioctl: Connection timed out > Could not read EXT_CSD from /dev/mmcblk1 > > What differ? Anyway..It's great about mmc-utils. Yes, this is expected -- SD cards don't have the ext csd register. Kind regards, Johan -- 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
