> -----Original Message----- > From: Menon, Nishanth > Sent: Friday, November 20, 2009 9:19 PM > To: Premi, Sanjeev; linux-omap@xxxxxxxxxxxxxxx > Subject: RE: VDD1 voltage after resume from idle > > > -----Original Message----- > > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > > owner@xxxxxxxxxxxxxxx] On Behalf Of Premi, Sanjeev > > Sent: Friday, November 20, 2009 9:47 AM > > To: linux-omap@xxxxxxxxxxxxxxx > > Subject: VDD1 voltage after resume from idle > > > > Hi, > > > > I am facing a strange problem on OMAP3EVM after resuming from idle. > > When using OPP5, the VDD1 voltage ramps to 1.35V. > > > > However, when i go thru the idle/wakeup cycle, the voltage never > > ramps back to 1.35V but stays at 1.20V. > > > > I don't notice many changes in smartreflex.c since 2.6.31-rc7 but > > this problem is not observed there. Actually, here the voltage > > did not drop during suspend at all. > > > > While I continue to debug, any suggestions? > > Look for retention voltage setup (they should be OPP dependent).. > this was one of my plans of cleanups anyways.. So far the problem seems to be optimizations in the enable_smartreflex and disable_smartreflex. On resume path, enable_smartreflex() is called, but doesn't do anything unless autocomp flag is on. This is different from the boot-time where the current freq is looked at and appropriate voltage is set. I am currently trying to get rid of optimizations and see the result. We do need the optimizations; but may be different ones. ~sanjeev > > > > > Best regards, > > Sanjeev > > Regards, > Nishanth Menon > > -- 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
