[Intel-gfx] [PATCH] drm/i915: Fix VLV analog output shivers

Jesse Barnes jbarnes at virtuousgeek.org
Wed Jun 12 01:18:46 CEST 2013


On Tue, 11 Jun 2013 23:06:59 +0200
Daniel Vetter <daniel at ffwll.ch> wrote:

> On Tue, Jun 11, 2013 at 11:08:16PM +0300, ville.syrjala at linux.intel.com wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > 
> > The current PLL settings produce a rather unstable picture when
> > I hook up a VLV to my HP ZR24w display via a VGA cable. Switching
> > the PLL to hybrid mode makes the picture a lot more stable. No
> > idea if this is truly wise though...
> 
> Ok, you've just slipped up here and mentioned that the changed bit is for
> "hybrid mode". Can I have real register defines for this magic now please?
> 
> Apparently Jesse just weaseled out of real work claiming that it's not
> documented at all ;-)
> 

There are some bits we could use, but we'd be making up the name.  On
top of that, the hex value is used in the docs, so if we make up bit
field names, we'll end up double taking everytime we look at these bits.

So there's no good answer here... :/

-- 
Jesse Barnes, Intel Open Source Technology Center



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