Pi5 - cpufreq-dt missing in kernel 6.18.10/6.18.12 16k

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Pi5 - cpufreq-dt missing in kernel 6.18.10/6.18.12 16k

Postby hifi25nl » Fri Feb 20, 2026 7:34 am

I have installed l 6.18.10 16k kernel but cpufreq driver is missing
Tried to modprobe driver but is not there.

I checked kernel config file and to me all seems fine.
I have also compiled kernel 6.18.12 16k with the same result.
Last edited by hifi25nl on Mon Feb 23, 2026 1:22 am, edited 2 times in total.
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Re: Pi5 - cpufreq missing in kernel 6.18.10 16k

Postby graysky » Fri Feb 20, 2026 8:13 pm

% cat /sys/devices/system/cpu/cpufreq/policy0/scaling_driver
cpufreq-dt
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Re: Pi5 - cpufreq missing in kernel 6.18.10 16k

Postby hifi25nl » Sat Feb 21, 2026 2:14 am

[user@rpi4 ~]$ ls /sys/devices/system/cpu/cpufreq/policy0/
ls: cannot access '/sys/devices/system/cpu/cpufreq/policy0/': No such file or directory
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Re: Pi5 - cpufreq missing in kernel 6.18.10 16k

Postby hifi25nl » Sat Feb 21, 2026 4:20 am

I checked linux-rpi-16k-6.18.10-1-aarch64.pkg.tar.xz
There is not cpufreq in /usr/lib/modules/6.18.10-1-rpi-16k/kernel/drivers or other locations
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Re: Pi5 - cpufreq missing in kernel 6.18.10/6.18.12 16k

Postby graysky » Sat Feb 21, 2026 10:46 am

RPi5 uses cpufreq-dt since the SoC exposes the frequency tables and voltage scaling info via the Device Tree (dt), not ACPI.
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Re: Pi5 - cpufreq missing in kernel 6.18.10/6.18.12 16k

Postby hifi25nl » Sun Feb 22, 2026 7:23 am

There is also no cpufreq-dt
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