On Tue, Aug 12, 2014 at 08:56:44PM +0530, Sharma, Shashank wrote: > Hello Chris, > > Thanks for your time and comments. > I would like to give a brief history of the patch. > > We tried to apply this optimization by default, and check all the > EDID read based on the live status. But not all developers agreed to > have this by default, with following reasons: > 1. live_status was not very reliable for all platforms, so live_status > based solution shouldn't be added. > 2. they dint want EDID caching to be by default, as few old platforms > were not even HPD capable. > > So we came up with this intermediate solution to have: > 1. Timeout based EDID caching, where cached EDID will be cleared after > one minute. > 2. An alternative code flow to support HDMI compliance (will be based > on the live_status check, and will be only enabled for commercial > platforms like android) which need HDMI compliance support. So the > kernel command line parameter is to support the need to add this > alternative EDID read method. > > Please le me know your opinion about this, considering the background. I know. That is orthogonal to the tweaks I was suggesting. Also if you feel you need to add details to your rationale, then your changelog is incomplete. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
