on post-fs-data
    mkdir /data/vendor/silead 0770 system system
    chown system system /data/vendor/silead
    chmod 0770 /data/vendor/silead

    chown system system /dev/spidev0.0
    chmod 0660 /dev/spidev0.0
    chown system system /dev/silead_fp
    chmod 0660 /dev/silead_fp
    chown system system /dev/silead_spi
    chmod 0660 /dev/silead_spi