How to export pwm class for duration, frequency, etc. settings

Embedded Devices Linux
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1

Hi,

I have ccimx6ulsbc development board. I want to access settings for pwm5, such as duration and frequency, etc. But I found that pwm5 settings only related to the clock under /sys/kernel/debug/clk/pwm5.
I cannot export /sys/class/pwm/pwmchip0/export for accessing settings (enable, duty_cycle, period). What so I have to do in order to export pwm5 control?

Thank you,
David

2

What hardware are you using?

3

Assuming you are using cc6ul (SBC? Starter?) have you followed this document?
https://www.digi.com/resources/documentation/digidocs/embedded/dey/2.6/cc6ul/bsp_r_pwm_6ul
What exactly did you do to enable pwm5 in device tree?