On Mon, Jul 1, 2019 at 11:13 AM Neil Armstrong <[email protected]> wrote: > > Enable DVFS for the U200, SEI520 and X96-Max Amlogic G12A based board > by setting the clock, OPP and supply for each CPU cores. > > The CPU cluster power supply can achieve 0.73V to 1.01V using a PWM > output clocked at 800KHz with an inverse duty-cycle. > > DVFS has been tested by running the arm64 cpuburn at [1] and cycling > between all the possible cpufreq translations and checking the final > frequency using the clock-measurer, script at [2]. > > [1] https://github.com/ssvb/cpuburn-arm/blob/master/cpuburn-a53.S > [2] https://gist.github.com/superna9999/d4de964dbc0f84b7d527e1df2ddea25f > > Signed-off-by: Neil Armstrong <[email protected]> Reviewed-by: Martin Blumenstingl <[email protected]>
