On Sun, Aug 16, 2015 at 7:25 PM, Bill M billmerry...@gmail.com wrote:
Hi All,
Can anyone tell me where the device tree overlays for the PWM are stored? I
found a post that described how to enable the PWM outputs by doing:
modprobe pwm_test
echo am33xx_pwm /sys/devices/bone_capemgr.9/slots
echo bone_pwm_P9_14 /sys/devices/bone_capemgr.9/slots
echo 500 /sys/devices/ocp.2/pwm_test_P9_14.*/period
echo 250 /sys/devices/ocp.2/pwm_test_P9_14.*/duty
This works for me, but I expect that there would be an am33xx_pwm-00A0.dtbo
file and a bone_pwm_P9_14-00A0.dtbo file in /lib/firmware, but not only do I
not find such overlays in this directory, I can't find them anywhere on my
system! What am I missing?
my uname output: Linux beaglebone 3.8.13-bone70 #1 SMP Fri Jan 23 02:15:42
UTC 2015 armv7l GNU/Linux
They are built-into the kernel vmlinux..
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
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