On Tue, Nov 22, 2011 at 06:40:07PM +0100, Cousson, Benoit wrote: > On 11/22/2011 5:43 PM, Mark Brown wrote: > >This sounds a lot like what devfreq (which was recently merged) is > >supposed to do. Have you looked at the overlap there? > devfreq is a fmwk for DVFS governors at device level, whereas AVS > stands for Adaptive Voltage Scaling. This technique does not involve > any frequency change, and does a fine voltage adjustment to adapt to > silicon process / aging / thermal variation based on a HW closed > loop. Ah, I see. It wasn't clear from the changelog that this was about fine adjustmnets rather than operating point selection. > Both DVFS and AVS can be used independently. > I think that AVS does belong to the voltage control infrastructure > more than the DVFS/freq one. This does sound like the two may need to understand each other at some point - if you want to do AVS on things that can vary their operating point to fine tune the voltages that get set then you'll need to be able to interface the two. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
