> From: Premi, Sanjeev > Sent: Friday, November 20, 2009 9:54 AM > > > > > > 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. What specific optimization are you talking about? http://git.kernel.org/?p=linux/kernel/git/khilman/linux-omap-pm.git;a=blob;f=arch/arm/mach-omap2/resource34xx.c;h=04be4d26945beccf81cad08a8cdfc6086d6ce70a;hb=refs/heads/pm#l277 ? 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
