Hi all,

 

I wanna try to use the hardware PWM on pin 7 of my orange pi one plus. Connect the fan. Toggle the SPI to enable, install wiring orangepi and all looks ok. But when in go to /sys/class/pwm i got a empty directory. I thought the should be a device pwmchip0 or something. I searched on the internet but can´t find a solution.

 

This is what WiringOrangePi shows:

 

 

Is there someone who knows what i do wrong or hwat i should do? Thank you!

not entirely sure but imho as from kernel 5.7 SPI is supported.

Suppose once megous is incorporated in the / your dev builds you can do another attempt

hmm, i thought it was just working a few time ago. 5.7 not yet available what i see? Just waiting what i read..?

I have installed kernel 5.8 but even /sys/class/pwm is also empty.... Someone more suggestions?

20 hours ago, haajee said:

Someone more suggestions?

PWM is always disabled by default in DT.

You will need to decompile DTB into DTS, edit the DTS to place ' status = "okay"; ' in the PWM node, and recompile DTS into DTB ...