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rock64-bashgpio's Issues

Frequency for PWM seems to max out at 180Hz

Nice library!
Unforunately I am experiencing a brick wall at 175-180 Hz. Is this a known issue? I have tried a few different pure GPIO pins.

sudo -s
source ~/Rock64-BashGPIO/bash/rock64-gpiolib.sh
gpio-setup 101 out
gpio-pwm 101 20000 100 1000 # produces a f=179hz wave

I am measuring the resultant wave on a well calibrated, modern scope.

Could this be a kernel or module configuration issue? I am running https://github.com/ayufan-rock64/linux-build/releases/download/0.6.44/bionic-minimal-rock64-0.6.44-239-arm64.img.xz as-is if that helps to know.

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