cd /sys/kernel/debug/dispdbg
echo "disp0" > name
echo "switch" > command
echo "4 28" > param
echo "1" > start

echo "4" > /proc/sys/kernel/printk
cd /sys/kernel/debug/dispdbg
echo "disp0" > name
echo "switch1" > command
echo "4 37 3 1 4 257 2 2 0 8" > param
echo "1" > start