VAR-SOM-AM33 Backlight
From Variscite Wiki
root@varsomam33:/sys/class/backlight# cd /sys/class/backlight/backlight root@varsomam33:/sys/class/backlight/backlight# echo 0 > brightness root@varsomam33:/sys/class/backlight/backlight# echo 7 > brightness root@varsomam33:/sys/class/backlight/backlight# echo 4 > brightness root@varsomam33:/sys/class/backlight/backlight# echo 7 > brightness