SOF should use the public zephyr API for power management of CPU cores. The currently used functions are internal kernel functions and should not be used from within the application. The code in file zephyr/lib/cpu.c needs to be refactored.

• soc: intel_adsp: call framework callback function for restore zephyrproject-rtos/zephyr#65394

• kernel: introduce k_smp_cpu_start() and k_smp_cpu_resume() zephyrproject-rtos/zephyr#64755

• zephyr: use k_smp_cpu_start()/k_smp_cpu_resume() for secondary core power up zephyrproject-rtos/sof#32

EDIT updated 4th Dec with latest tracking.