Hello William,
the output is:
root@beaglebone:/lib/firmware# ls /sys/devices/platform/ocp/
40300000.ocmcram 47400000.usb 48046000.timer 4819c000.i2c
48302000.epwmss 4a100000.ethernet modalias
ocp:P9_22_pinmux
40302000.ocmcram_nocache 48022000.serial 48048000.timer 481a0000.spi
48304000.epwmss 4a300000.pruss ocp:l4_wkup@44c00000
of_node
44e07000.gpio 48030000.spi 4804a000.timer
481aa000.serial 48310000.rng 4c000000.emif
ocp:P8_13_pinmux
power
44e09000.serial 48038000.mcasp 4804c000.gpio 481ac000.gpio
49000000.edma 53100000.sham ocp:P8_19_pinmux
subsystem
44e0b000.i2c 4803c000.mcasp 48060000.mmc 481ae000.gpio
49800000.tptc 53500000.aes ocp:P9_14_pinmux
uevent
44e35000.wdt 48042000.timer 480c8000.mailbox
48200000.interrupt-controller 49900000.tptc 56000000.sgx ocp:
P9_16_pinmux
44e3e000.rtc 48044000.timer 480ca000.spinlock
48300000.epwmss 49a00000.tptc driver_override ocp:
P9_21_pinmux
I compiled your overlay with this command:
dtc -O dtb -o /lib/firmware/univ-wph-00A0.dtbo -b 0 -@ /lib/firmware/univ-
wph-00A0.dts
Is that the correct way to do it?
Regarding your question whether I used the correct pins: I set all pwm
outputs with the nested for commands described in the my last post and used
the oscilloscope to measure all the pwm pins given in this image
(http://beagleboard.org/static/images/cape-headers-pwm.png) against a GND
pin. So at least one of them should have caused some output on the
oscilloscope.
The oscilloscope is working correctly as it gives me 3.3V and 5V for P9_3
and P9_5.
Best regards
Phil
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