Hi all, Let me make my question short.
I could configure the pins P9_21 and P9_22 as PWM output using BB-PWM0 overlay. But why it is not possible configure the the pins P9_14 & P9_16 and P8_13 & P8_19 as PWM signals, by doing the same procedure with BB-PWM2 and BB-PWM1 overlays? Thanks & Regards, Sajeevan.K On Wednesday, July 12, 2017 at 5:30:15 PM UTC+5:30, sajeevan k wrote: > > > Hi all, > > I have already configured the pins P9_21 and P9_22 for PWM function using > > BB-PWM0 overlays. > > > But now I want to use these pins as UART and some other pins as PWM. > > > I tried to make P9_14(EHRPWM1A) & P9_16(EHRPWM1B). For this I used the > overlay BB-PWM1. > > A part of *BB-PWM1-00A0.dts* is shown here to confirm that BB-PWM1 > corresponds to P9_14(EHRPWM1A) & P9_16(EHRPWM1B). > > > > fragment@0 { > target = <&am33xx_pinmux>; > __overlay__ { > pinctrl_spec: Panel_Pins { > pinctrl-single,pins = < > 0x48 0x06 /* (U14) gpmc_a2.ehrpwm1A */ > 0x4c 0x06 /* (T14) gpmc_a3.ehrpwm1B */ > >; > }; > }; > }; > > > > > This is creating a folder pwmchip4 in /sys/class/pwm directory. > > Then with the following commands, pwm0 and pwm1 are created in > /sys/class/pwm/pwmchip4 directory. > > > sudo echo 0 > /sys/class/pwm/pwmchip4/export > > sudo echo 1 > /sys/class/pwm/pwmchip4/export > > > > And software written same as in the case of P9_21 and P9_22. > > > But PWM signals are not appearing in P9_14(EHRPWM1A) & P9_16(EHRPWM1B). > > > > I tried also P8_13(ehrpwm2B) & P8_19(ehrpwm2A) in the same way with > BB-PWM2 overlay. > > This is creating a folder pwmchip2 in /sys/class/pwm directory. These are > also not working. > > > I think I am missing something. > > > > Please help me to find out a solution. > > > Thanks in advance for the help. > > > Thanks & Regards, > Sajeevan.K > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/1edc60c9-9375-4351-a4e6-ba507a57d7fe%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.