On Mon, 2017-09-11 at 16:33 +0300, Ville Syrjälä wrote: > On Wed, Sep 06, 2017 at 05:14:58PM -0700, Dhinakaran Pandiyan wrote: > > The POWER_DOWN_PHY and POWER_UP_PHY sideband message transactions allow > > the source to reqest any node in a mst path or a whole path to be > > powered down or up. This allows drivers to target a specific sink in the > > MST topology, an improvement over just power managing the imediate > > downstream device. Secondly, since the request-reply protocol waits for an > > ACK, we can be sure that a downstream sink has enough time to respond to a > > power up/down request. > > I was a bit worried how this handles multiple streams going through > the same MST device, but looks like the spec has accounted for this > by having the device skip the D3 if any active streams are present. > > I guess that also means we have to do this after we've turned off the > stream, assuming we want things actually reach D3. Looks like that does > match our current order of things. > > Pushed this one to drm-misc-next. Thanks for the patch and review. > Thanks, do you see any potential problems patch with Patch 2/2? _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
