On 02/14/2012 05:07 PM, Johan RUDHOLM wrote: > 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. What kernel version is supported? up to linux-3.3? did you know? Best Regards, Jaehoon Chung > > 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 > -- 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
