Interfacing (DSI, CSI, I2C, etc.) • Hardware PWM does not work on Pi 5 with kernel 6.12.X

I noticed that the hardware PWM does not work on Pi 5 with kernel 6.12.X.

By adding "dtoverlay=pwm-2chan" in /boot/firmware/config.txt,
"/sys/class/pwm/pwmchip2" should appear on Pi 5.

However, it does not appear and only "/sys/class/pwm/pwmchip0" exists.
Therefore, the hardware PWM cannot be yielded on Pi 5 with kernel 6.12.X.

By replacing the kernel with kernel 6.6.X by the following command,
my Pi 5 successfully yielded the hardware PWM.When using Pi 4, even the kernel 6.12.X successfully yielded hardware PWM.

Does the kernel 6.12.X require any fixes?

Statistics: Posted by neuralassembly — Sat Jun 21, 2025 6:54 am — Replies 0 — Views 47

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