> 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
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