Check pinmux cat < /sys/kernel/debug/pwm and post it here.
Also cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pins and post it here. On Tue, Apr 1, 2014 at 8:07 PM, Sungjin Chun <chu...@castlesoft.co.kr>wrote: > Thank you for your help. > > pwmchip0 and pwmchip1 2 files are there. > > Weird thing is that after echo "pwm-test-P9.." and echo "pwm-test-P8...", > though there are pwm-test-P9_14 and > pwm-test-P8_13, and contents of the directores are same, only P8_13 does > show result in oscilloscope but > P9_14 does not show result. > > > On Wed, Apr 2, 2014 at 12:06 AM, Cody Lacey <c...@beagleboard.org> wrote: > >> what are the contents of /sys/class/pwm >> >> >> On Tue, Apr 1, 2014 at 4:25 AM, Sungjin Chun <chu...@gmail.com> wrote: >> >>> Ah, I'm using 3.8.13 kernel on BeagleBone Black >>> >>> >>> On Tuesday, April 1, 2014 6:07:50 PM UTC+9, Sungjin Chun wrote: >>>> >>>> echo "am33x-pwm" > ...slots >>>> echo "pwm-test-P9_14" > ...slots >>>> (yes, I'm not rewrite those file names correctly here) >>>> >>>> Above does not make PWM work for P9_14 pin. Though there are period_ns >>>> and duty_ns, if I >>>> echo "1" > run >>>> nothing happens. If I do this on P8_13, it works. Why does this not >>>> work for me? >>>> >>> -- >>> 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. >> > > -- > 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.
