Hi, On Mon, Aug 3, 2015 at 7:35 AM, Julian Calaby <julian.cal...@gmail.com> wrote: > Hi Timo, > > On Mon, Aug 3, 2015 at 5:23 AM, Timo Sigurdsson > <public_tim...@silentcreek.de> 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.
On the side, the original OPPs in the FEX files are actually frequency/voltage ranges, and not just points. Mainlines OPPv2 will support these, along with turbo frequencies. Furthermore, the FEX files also have fields that limit the minimum and maximum frequencies. > 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? You could try. Though I really don't see much to gain here. > (Alternatively, would it make sense to modify the code that uses this > to use frequencies with voltages specified that are lower than can be > supplied with the lowest voltage it can?) I think that's a bit harder to get accepted. ChenYu -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
