Re: [Intel-gfx] [PATCH v4] drm/i915: Disable fast link training if DP config changes

2015-12-18 Thread Mika Kahola
On Thu, 2015-12-17 at 15:16 +0200, Ville Syrjälä wrote: > On Thu, Dec 17, 2015 at 02:46:03PM +0200, Mika Kahola wrote: > > Disable DP fast link training if DP link configuration > > changes. If one of the DP link parameters i.e. link > > bandwidth, lane count, rate selection, port clock or bpp >

Re: [Intel-gfx] [PATCH v4] drm/i915: Disable fast link training if DP config changes

2015-12-18 Thread Ville Syrjälä
On Fri, Dec 18, 2015 at 10:37:26AM +0200, Mika Kahola wrote: > On Thu, 2015-12-17 at 15:16 +0200, Ville Syrjälä wrote: > > On Thu, Dec 17, 2015 at 02:46:03PM +0200, Mika Kahola wrote: > > > Disable DP fast link training if DP link configuration > > > changes. If one of the DP link parameters i.e.

[Intel-gfx] [PATCH v4] drm/i915: Disable fast link training if DP config changes

2015-12-17 Thread Mika Kahola
Disable DP fast link training if DP link configuration changes. If one of the DP link parameters i.e. link bandwidth, lane count, rate selection, port clock or bpp changes the link training does no longer apply the previously computed voltage swing and pre-emphasis values. Instead, the link

Re: [Intel-gfx] [PATCH v4] drm/i915: Disable fast link training if DP config changes

2015-12-17 Thread Ville Syrjälä
On Thu, Dec 17, 2015 at 02:46:03PM +0200, Mika Kahola wrote: > Disable DP fast link training if DP link configuration > changes. If one of the DP link parameters i.e. link > bandwidth, lane count, rate selection, port clock or bpp This list of things we check should be updated to match the actual