Hello Lars. I tested with Linux 2.6.31. > +#include <linux/gpio_keys.h> I think we need this also: #include <linux/input.h> root at om-gta02 /sys/class/input $ ls event0 input0 mice event0 is power button (PCF50633 PMU event). What do I have to enable to see the input events? I am missing something?