andi61 Posted February 20, 2023 Share Posted February 20, 2023 Hello, I tried to reduce the clock frequency with nano /etc/default/cpufrequtils. I also set the governor to userspace in order to enable direct frequency setting. But there is no effect to be seen with cpufreq-info -o except the governor is switched to "userspace" now. I also tried it with echo 500000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed , but clock frequency did not change. According to the S905X3 datasheet the SoC could even run at 100Mhz... I would appreciate a hint, how to reduce clock speed way below 1GHz, in order to save power consumption Thanks a lot Andy PS: I am running VERSION=23.02.0-trunk 0 Quote Link to comment Share on other sites More sharing options...
Solution SteeMan Posted February 20, 2023 Solution Share Posted February 20, 2023 Speeds lower than 1Ghz were removed in this patch to mainline kernel for stability reasons: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/arch/arm64/boot/dts/amlogic?h=v6.2&id=fd86d85401c2049f652293877c0f7e6e5afc3bbc 0 Quote Link to comment Share on other sites More sharing options...
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