RE: [RFC][Patch] OMAP3 PM: sysfs vdd_opp change to use ConstraintFramework

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> -----Original Message-----
> From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of Tony
> Lindgren
> Sent: Tuesday, October 20, 2009 12:02 PM
> To: Kevin Hilman
> Cc: Sripathy, Vishwanath; linux-omap@xxxxxxxxxxxxxxx
> Subject: Re: [RFC][Patch] OMAP3 PM: sysfs vdd_opp change to use ConstraintFramework
> 
> * Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx> [091020 08:51]:
> > "Sripathy, Vishwanath" <vishwanath.bs@xxxxxx> writes:
> >
> > > Sysfs entry vdd_opp currently does not use constraint framework.
> > > Because of this, even if you set the opp via this entry, it has no effect
> > > since it can be overridden by on demand governor any time.
> > > This patch has changes to make vdd_opp to use constraint framework.
> > > vdd_lock variable has to be used when application wants to disable DVFS
> > > altogether. This will override any other constraints and will lock the
> > > OPP to given value.
> > Since we can do the equivalent with CPUFreq using the userspace
> > governor, I don't see the point of having an additional interface.
> >
> > Comments?
> 
> Total ack from me!

Only thing what I think of is, L3 rate.

-Girish


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