Messages in this thread | | | Subject | Re: [PATCH 12/23] drm: omapdrm: plane: update fifo size on atomic update | From | Tomi Valkeinen <> | Date | Wed, 14 Dec 2016 10:43:18 +0200 |
| |
On 13/12/16 19:35, Laurent Pinchart wrote: > Hi Sebastian, > > Thank you for the patch. > > On Tuesday 08 Mar 2016 17:39:44 Sebastian Reichel wrote: >> This is a workaround for a hardware bug occuring >> on OMAP3 with manually updated panels. > > Could you please explain what the bug is and how the workaround operates ? Do > you have a reference to an errata document ?
I don't think I ever found out exactly why the problem happens. But on OMAP3 DSI, the fifo thresholds had to be tuned slightly, otherwise DISPC would stop. dispc_ovl_compute_fifo_thresholds() does that tuning if "manual_update" parameter is set on OMAP3.
Tomi
[unhandled content-type:application/pgp-signature] | |