• Chuanxiao Dong's avatar
    mmc: export eMMC4.4 enhanced area details to sysfs · 709de99d
    Chuanxiao Dong authored
    Enhanced area feature is a new feature defined in eMMC4.4 standard. This
    user data area provides higher performance/reliability, at the expense
    of using twice the effective media space due to the area using SLC.
    
    The MMC driver now reads out the enhanced area offset and size and adds
    them to the device attributes in sysfs. Enabling the enhanced area can
    only be done once, and should be done in manufacturing. To use this
    feature, bit ERASE_GRP_DEF should also be set.
    
    Documentation/ABI/testing/sysfs-devices-mmc describes the two new
    attributes.
    Signed-off-by: default avatarChuanxiao Dong <chuanxiao.dong@intel.com>
    Reviewed-by: default avatarChris Ball <cjb@laptop.org>
    Signed-off-by: default avatarChris Ball <cjb@laptop.org>
    709de99d
sysfs-devices-mmc 985 Bytes