looking at device '/devices/platform/pwm-backlight/backlight/pwm-backlight':
    KERNEL=="pwm-backlight"
    SUBSYSTEM=="backlight"
    DRIVER==""
    ATTR{bl_power}=="0"
    ATTR{brightness}=="38"
    ATTR{actual_brightness}=="38"
    ATTR{max_brightness}=="255"
    ATTR{type}=="raw"

  looking at parent device '/devices/platform/pwm-backlight':
    KERNELS=="pwm-backlight"
    SUBSYSTEMS=="platform"
    DRIVERS=="pwm-backlight"

  looking at parent device '/devices/platform':
    KERNELS=="platform"
    SUBSYSTEMS==""
    DRIVERS==""