Source: linux Version: 5.10.46-3 Severity: wishlist Tags: patch At https://salsa.debian.org/raspi-team/image-specs/-/issues/7#note_206349 it was reported that CPU frequency scaling was enabled for armhf and arm64, but not for armel. I (and others) have been able to confirm that.
So I build my own kernel with the following patch: +CONFIG_CLK_RASPBERRYPI=y +CONFIG_CPUFREQ_DT=m +CONFIG_CPUFREQ_DT_PLATDEV=y +CONFIG_ARM_RASPBERRYPI_CPUFREQ=m -CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set -# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set +CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y -CONFIG_CPU_FREQ_GOV_ONDEMAND=m +CONFIG_CPU_FREQ_GOV_ONDEMAND=y I 'heard' that the schedutil governor is good for big.little CPUs, but the RPi 0/0w/1 is only (very) little ;-) so I chose 'ondemand' as default governor. Feel free to change that. After booting in that new kernel, `cpupower frequency-info` and `cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_*_freq` returned proper results. On the RPi 1 it was only information as it only has 1 frequency: 700Mhz. But Gunnar Wolf 'gwolf' downloaded my .deb files and installed it on his 0w and then he was able to switch between 700 and 1000Mhz. https://nube.iiec.unam.mx/s/p4QLFp9i8baCYrt is a picture of it; don't know how long that'll be available though. So hereby the request to enable it in the config for the RPi 0/0w/1. Cheers, Diederik -- System Information: Debian Release: 11.0 APT prefers testing-security APT policy: (500, 'testing-security'), (500, 'testing') Architecture: armel (armv6l) Kernel: Linux 5.10.0-8-rpi Kernel taint flags: TAINT_CRAP, TAINT_UNSIGNED_MODULE Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled
