I am trying hardly to enable pwm on archlinux-3.8.12-13 on the Beaglebone black.
I came so far that after exporting the overlay there is a directory at “/sys/devices/ocp.3/pwm_test_P9_16.15”.
Unfortunately there are no files in this directory which would allow me to modify duty_cycle, period and so on. I only find:
modalias power subsystem uevent
My device tree source overlay is:
/* * Copyright (C) 2013 CircuitCo * Copyright (C) 2013 Texas Instruments