Switch on the backlight using sysfs

The following command can be used to turn on the backlight of the display:

root@tqma35 $ echo "1" > /sys/devices/platform/mx3_sdc_fb/graphics/fb0/mx3_sdc_bl0/bl_power

To check the value it can be read out using cat:

root@tqma35 $ cat /sys/devices/platform/mx3_sdc_fb/graphics/fb0/mx3_sdc_bl0/bl_power
1

The “1” stands for “Backlight on”