Re: [Intel-gfx] [PATCH v3 3/3] drm/i915/dp_mst: Work around out-of-spec adapters filtering short pulses

2020-06-09 Thread Imre Deak
On Tue, Jun 09, 2020 at 11:58:18AM -0400, Lyude Paul wrote: > Hi! Awesome patch series! > > Reviewed-by: Lyude Paul Thanks. > Also re merging via drm-intel-next-queued - I think that should be fine, fwiw > merging via drm-misc-next might be another option (I've definitely done this > in > the

Re: [Intel-gfx] [PATCH v3 3/3] drm/i915/dp_mst: Work around out-of-spec adapters filtering short pulses

2020-06-09 Thread Lyude Paul
Hi! Awesome patch series! Reviewed-by: Lyude Paul Also re merging via drm-intel-next-queued - I think that should be fine, fwiw merging via drm-misc-next might be another option (I've definitely done this in the past for series that touched MST and drivers, but I don't have a hard preference

Re: [Intel-gfx] [PATCH v3 3/3] drm/i915/dp_mst: Work around out-of-spec adapters filtering short pulses

2020-06-09 Thread Imre Deak
Hi Dave, Lyude, are you ok to merge this patchset via the drm-intel-next-queued tree? --Imre On Thu, Jun 04, 2020 at 09:45:00PM +0300, Imre Deak wrote: > Some TypeC -> native DP adapters, at least the Club 3D CAC-1557 adapter, > incorrectly filter out HPD short pulses with a duration less than

Re: [Intel-gfx] [PATCH v3 3/3] drm/i915/dp_mst: Work around out-of-spec adapters filtering short pulses

2020-06-04 Thread Ville Syrjälä
On Thu, Jun 04, 2020 at 09:45:00PM +0300, Imre Deak wrote: > Some TypeC -> native DP adapters, at least the Club 3D CAC-1557 adapter, > incorrectly filter out HPD short pulses with a duration less than > ~540 usec, leading to MST probe failures. > > According to the DP Standard 2.0 section 5.1.4:

[Intel-gfx] [PATCH v3 3/3] drm/i915/dp_mst: Work around out-of-spec adapters filtering short pulses

2020-06-04 Thread Imre Deak
Some TypeC -> native DP adapters, at least the Club 3D CAC-1557 adapter, incorrectly filter out HPD short pulses with a duration less than ~540 usec, leading to MST probe failures. According to the DP Standard 2.0 section 5.1.4: - DP sinks should generate short pulses in the 500 usec -> 1 msec