Hi Kever, As per Rockchip RK3399 TRM V1.4 Part1 RK3399 have dual-core Cortex-A72 and a quad-core Cortex-A53 + Cortex-M0 for power management firmware. So can this feature be enabled for all RK3399 SBC. or is this meant for specific RK3399 family of processor. -Anand