If properly enabled in dtb file during booting, you can always use any peripherals in AM335X SoC. Refer https://github.com/chunsj/nxctrl/blob/master/pwm-test.c, which uses /dev/mem for control pwm. Of course this code does not provide sysfs interface.
Sent from my iPad > On Apr 18, 2014, at 9:12 PM, halhe...@gmail.com wrote: > > I retried accessing PWM in the latest 3.13 kernel.....with no luck. Is PWM > still not supported in 3.13 (under /sys/devices/ocp.#/pwm_test_P9_14.#/) or > is there simply a new way to access PWM that I'm not aware of ? > > Hussam > >> On Tuesday, March 25, 2014 5:29:03 PM UTC-4, halh...@gmail.com wrote: >> I'm having problems with PWM under the latest 3.13 kernel (built as per the >> instructions provided @ >> http://www.eewiki.net/display/linuxonarm/BeagleBone+Black) with a Debian >> root filesystem.The Device tree seems to support 3 PWM channels on P9_14, >> P9_16 (ehprwm1a&b) & P9_42 (ecap0). But when i take a peek at the contents >> of the "/sys/devices/ocp.#/pwm_test_P9_14.#/" directory I do not see the >> 'period', 'duty', 'run' or 'polarity' files needed to control the PWM >> channels. >> >> Is PWM supported in the 3.13 Kernel yet? >> >> Thanks! >> Hussam > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
