On Mon, Aug 03, 2015 at 09:35:51AM +1000, Julian Calaby wrote: > Hi Timo, > > On Mon, Aug 3, 2015 at 5:23 AM, Timo Sigurdsson > <public_timo.s@xxxxxxxxxxxxxx> wrote: > > sun7i-a20.dtsi contains an cpufreq operating point at 0.9 volts. Most A20 boards > > (or all?), however, do not allow the voltage to go below 1.0V. Thus, raise the > > voltage for the lowest operating point to 1.0V so all boards can actually use > > it. > > Surely it wouldn't be added here if some could supply 0.9v. > > Is the code that uses this smart enough to sensibly switch between two > operating points with the same frequency and different voltages? If > so, maybe just add a 144MHz @ 1.0v operating point? And how would it choose between the two exactly ? Switch to the 144MHz @ 0.9V and see if it works ? If it doesn't you might have screwed your system already, and might not be able to recover from it at all. Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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