Re: [Intel-gfx] [PATCH] drm/i915: Fall back to zero vswing/preemph if the sink doesn't like the last good values

2015-11-02 Thread Ville Syrjälä
On Mon, Nov 02, 2015 at 01:21:23PM +, Conselvan De Oliveira, Ander wrote: > On Fri, 2015-10-30 at 18:47 +0200, ville.syrj...@linux.intel.com wrote: > > From: Ville Syrjälä > > > > My Lenovo STM STDP3100 miniDP->VGA dongle doesn't seem to like it when > > we try

Re: [Intel-gfx] [PATCH] drm/i915: Fall back to zero vswing/preemph if the sink doesn't like the last good values

2015-11-02 Thread Conselvan De Oliveira, Ander
On Fri, 2015-10-30 at 18:47 +0200, ville.syrj...@linux.intel.com wrote: > From: Ville Syrjälä > > My Lenovo STM STDP3100 miniDP->VGA dongle doesn't seem to like it when > we try to start link training with non-zero vswing/preemphasis. So when > the initial link

Re: [Intel-gfx] [PATCH] drm/i915: Fall back to zero vswing/preemph if the sink doesn't like the last good values

2015-11-02 Thread Jani Nikula
On Fri, 30 Oct 2015, ville.syrj...@linux.intel.com wrote: > From: Ville Syrjälä > > My Lenovo STM STDP3100 miniDP->VGA dongle doesn't seem to like it when > we try to start link training with non-zero vswing/preemphasis. So when > the initial link training DPCD

[Intel-gfx] [PATCH] drm/i915: Fall back to zero vswing/preemph if the sink doesn't like the last good values

2015-10-30 Thread ville . syrjala
From: Ville Syrjälä My Lenovo STM STDP3100 miniDP->VGA dongle doesn't seem to like it when we try to start link training with non-zero vswing/preemphasis. So when the initial link training DPCD write fails, retry it with zero values. Fixes a bunch of errors like