[PATCH 1/2] drm/dp: retry AUX transactions 32 times

2014-12-09 Thread Dave Airlie
On 26 November 2014 at 19:24, Jani Nikula wrote: > On Wed, 26 Nov 2014, Dave Airlie wrote: >> From: Dave Airlie >> >> At least on two MST devices I've tested with, when >> they are link training downstream, they are totally >> unable to handle aux ch msgs, so they defer like nuts. >> I tried 16

[PATCH 1/2] drm/dp: retry AUX transactions 32 times

2014-11-26 Thread Dave Airlie
On 26 November 2014 at 13:20, Tom Stellard wrote: > On Wed, Nov 26, 2014 at 01:17:22PM +1000, Dave Airlie wrote: >> From: Dave Airlie >> >> At least on two MST devices I've tested with, when >> they are link training downstream, they are totally >> unable to handle aux ch msgs, so they defer like

[PATCH 1/2] drm/dp: retry AUX transactions 32 times

2014-11-26 Thread Dave Airlie
From: Dave Airlie At least on two MST devices I've tested with, when they are link training downstream, they are totally unable to handle aux ch msgs, so they defer like nuts. I tried 16, it wasn't enough, 32 seems better. This fixes one Dell 4k monitor and one of the MST hubs. Signed-off-by: D

[PATCH 1/2] drm/dp: retry AUX transactions 32 times

2014-11-26 Thread Jani Nikula
On Wed, 26 Nov 2014, Dave Airlie wrote: > From: Dave Airlie > > At least on two MST devices I've tested with, when > they are link training downstream, they are totally > unable to handle aux ch msgs, so they defer like nuts. > I tried 16, it wasn't enough, 32 seems better. I think we have a bug

[PATCH 1/2] drm/dp: retry AUX transactions 32 times

2014-11-25 Thread Tom Stellard
On Wed, Nov 26, 2014 at 01:17:22PM +1000, Dave Airlie wrote: > From: Dave Airlie > > At least on two MST devices I've tested with, when > they are link training downstream, they are totally > unable to handle aux ch msgs, so they defer like nuts. > I tried 16, it wasn't enough, 32 seems better. >