With that setting you are actually disabling the DVFS after the short period of time during boot - before cpufrequtils kicks in. My experience is that you could also set it to min/max 2GHz and it would be just as good.   Yes, this mod/tweak/hack ;-) fixes the behaviour of my boards with ondemand governor.   It seems that the instability of little core's voltage during the voltage change was the issue. Rockchip has already limited max change per single step for thi