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Backlight

On VAR-SOM-MX8 and VAR-SOM-MX8X

cat /sys/class/backlight/backlight/max_brightness

cat /sys/class/backlight/backlight/brightness

echo 0 > /sys/class/backlight/backlight/brightness

echo 50 > /sys/class/backlight/backlight/brightness

echo 100 > /sys/class/backlight/backlight/brightness

echo 80 > /sys/class/backlight/backlight/brightness

On SPEAR-MX8

cat /sys/class/backlight_lvds0/backlight/max_brightness

cat /sys/class/backlight_lvds0/backlight/brightness

echo 0 > /sys/class/backlight_lvds0/backlight/brightness

echo 50 > /sys/class/backlight_lvds0/backlight/brightness

echo 100 > /sys/class/backlight_lvds0/backlight/brightness

echo 80 > /sys/class/backlight_lvds0/backlight/brightness