[Intel-gfx] [RFC] drm/i915: downclock support

[Keith Packard]

On Thu, 2009-08-27 at 15:16 +0800, Fu Michael wrote:
>   
> I don't see why this change is needed.  Are there any bug using the old 
> code?

No, not if you wanted only a single clock. However, downclocking can
only modify the P parameter, not the M or N values. So, choosing a PLL
programming that has the largest possible P means being able to
downclock successfully.


-- 
keith.packard at intel.com
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