Re: [Intel-gfx] PCH reference clock cleanups

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On Mon, 03 Oct 2011 16:18:48 -0700
Keith Packard <keithp@xxxxxxxxxx> wrote:

> On Mon, 3 Oct 2011 14:14:23 -0700, Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote:
> 
> > Now... is keeping the various refclks enabled costing us any power?
> > IOW, should we be trying to disable them when everything has been
> > DPMS'd off too?
> 
> That's the same as tracking usage and enabling/disabling on the fly as
> modes are set. I think it's possible, but I'd like to have the 'simpler'
> fix present before we try a power saving move.

Agreed; fortunately shutting everything off when no outputs are
active should be simpler than trying flip the bits on & off every mode
set. :)

-- 
Jesse Barnes, Intel Open Source Technology Center
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