Re: [Intel-gfx] [PATCH v3 2/2] drm/i915: vlv: W/a for hotplug/manual VGA detection

2014-01-10 Thread Ville Syrjälä
On Thu, Jan 09, 2014 at 05:08:16PM +0200, Imre Deak wrote: > VGA detection requires the reference clock to be on, so make sure this > is the case. > > This fixes VGA hotplug/manual detection where all pipes are off and so > we would normally disable all clocks. > > v2: > - Instead of disabling PS

[Intel-gfx] [PATCH v3 2/2] drm/i915: vlv: W/a for hotplug/manual VGA detection

2014-01-09 Thread Imre Deak
VGA detection requires the reference clock to be on, so make sure this is the case. This fixes VGA hotplug/manual detection where all pipes are off and so we would normally disable all clocks. v2: - Instead of disabling PSR clock gating, force the reference clock on through the DPLL_A register.