Difference between revisions of "UCM-iMX95 Yocto Linux: CPU frequency"
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Latest revision as of 15:51, 9 January 2025
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The operation below requires root access. |
To get the current settings run:
grep -ir . /sys/devices/system/cpu/cpufreq/policy0/ 2>/dev/null
The scaling governor
The scaling governor manages the CPU frequency to balance performance and power consumption dynamically.
To see current scaling governor run:
cat /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
To see available scaling governors run:
cat /sys/devices/system/cpu/cpufreq/policy0/scaling_available_governors
To set the scaling governor run:
echo userspace > /sys/devices/system/cpu/cpufreq/policy0/scaling_governor
CPU frequency
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CPU frequency can be changed only when the scaling governor is set to userspace. |
To see current CPU frequency run:
cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq
To see available CPU frequencies run:
cat /sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies
To set CPU frequency run:
echo 900000 > /sys/devices/system/cpu/cpufreq/policy0/scaling_setspeed
