cpufreq — CPU Frequency Control

The cpufreq module is used to get/set the CPU frequency to save power.

Functions

cpufreq.set_frequency(supported_frequency: int) → None

Sets the CPU frequency to a supported_frequency in MHz. Peripheral frequencies are not changed, only the CPU clock. Raises OSError if supported_frequency is not in the list returned by cpufreq.get_supported_frequencies.

cpufreq.get_current_frequencies() → Tuple[int, int, int, int]

Returns a 4-tuple (cpu_clk_in_mhz, hclk_in_mhz, pclk1_in_mhz, pclk2_in_mhz) with the current CPU and bus clock frequencies in MHz.

cpufreq.get_supported_frequencies() → List[int]

Returns a list of supported CPU frequencies in MHz.