[Intel-gfx] [PATCH] drm/i915: make DP training try a little harder

[Yuanhan Liu]

On Wed, Jan 05, 2011 at 09:19:19AM -0800, Jesse Barnes wrote:

[snip]

> > 
> > And, FYI, the two patch would not fix bug
> > https://bugs.freedesktop.org/show_bug.cgi?id=32539
> > the train link still failed.
> 
> Does this one at least keep it from hanging?

Oh, sorry, wrong bug number :( , it's 29791.
> 
> If it doesn't actually help with suspend/resume, I wonder if we need to
> use fast link training on that machine.  The "use VBT provided values"
> patch did that, using the VBT pre-emphasis and vswing values, but we
> can also cache the last known good AUX handshake data and use that at
> resume time too.  Can you give that a try?