> Are there other places to get this information, for example > /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq It is possible to specify "clock-frequency" in CPU nodes in device tree, which corresponds to entry like this /sys/devices/system/cpu/cpu0/of_node/clock-frequency However, it's not mandatory to specify "clock-frequency", so maybe adding a '-F' option is more useful.