On 14/12/16 11:10, Laurent Pinchart wrote: > Hi Tomi, > > On Wednesday 14 Dec 2016 10:43:18 Tomi Valkeinen wrote: >> On 13/12/16 19:35, Laurent Pinchart wrote: >>> 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. > > I've had a look at dispc_ovl_compute_fifo_thresholds() and the patch makes > sense to me. If Sebastian could address the small issues I pointed out, we > could then merge this. Alternatively I can take care of addressing them. It's only needed with the rest of the DSI manual update series, so I'd rather keep it as part of that series. Tomi
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