For some test I need to run a 32-bit kernel on a CM4 DUT
I have enabled the 'pwm-gpio-fan' overlay with a custom fan-curve which works as expected on the 64-bit kernel.Adding to config.txt for running a 32-bit kernel results in below error in kernel loghas anybody else tested the overlay on 32-bit? How to solve this (as I need to have the fan running for the next tasks)?
I have enabled the 'pwm-gpio-fan' overlay with a custom fan-curve which works as expected on the 64-bit kernel.
Code:
# PWM GPIO fan via SW PWM dtoverlay=pwm-gpio-fan,fan_gpio=18# change the cooling mapdtparam=fan_temp0=36000,fan_temp0_hyst=2000,fan_temp0_speed=90dtparam=fan_temp1=40000,fan_temp1_hyst=3000,fan_temp1_speed=150dtparam=fan_temp2=52000,fan_temp2_hyst=4000,fan_temp2_speed=200dtparam=fan_temp3=58000,fan_temp3_hyst=5000,fan_temp3_speed=255Code:
# run 32-bit kernelarm_64bit=0Code:
pi@peppylite:~/linux $ uname -aLinux peppylite 6.12.17-v7l+ #1861 SMP Wed Mar 5 16:01:33 GMT 2025 armv7l GNU/LinuxCode:
[ 3.632772] pwm-fan pwm-fan: Configured period too big[ 3.632784] pwm-fan pwm-fan: probe with driver pwm-fan failed with error -22Statistics: Posted by aBUGSworstnightmare — Mon Mar 10, 2025 4:28 pm — Replies 0 — Views 40