On Wed, Mar 29, 2017 at 10:24 AM, Alastair Bridgewater <alastair.bridgewa...@gmail.com> wrote: > On Wed, Mar 29, 2017 at 8:02 AM, Ville Syrjälä > <ville.syrj...@linux.intel.com> wrote: >> >> On Mon, Mar 27, 2017 at 05:57:57PM -0400, Alastair Bridgewater wrote: >> > And the tenth patch enables stereo mode support... on HDMI and DPort >> > connectors on nv50+ hardware. HDMI connectors because obvious. DPort >> > connectors because of DPort to HDMI adaptors. >> >> Do you mean DP++ or actual protocol converters? DP++ is just HDMI with >> a some electrical tweaks, but IIRC proper DP defines 3D stereo quite >> differently than HDMI. I'm not sure if we should be able to push HDMI >> style 3D through DP->HDMI/DP++ adaptors. The specs are unfortunately >> very vague when it comes to such devices. > > DP++. Good point about the protocol converters, though I don't recall > seeing any way to distinguish between a DP and a DP++ connector in > nouveau, nor do I know if nVidia actually made any boards with DP that > isn't DP++. I guess I have some digging to do in that direction. Thank > you.
I wouldn't be surprised if the externally-encodered G200 DP connectors didn't support DP++. I do think that the vast majority of DP ports are actually DP++ (on NVIDIA, and probably everywhere). However since this is (edge case)^2 [G200 DP, 3D DP], I wouldn't spend too much time worrying about it. I doubt it's documented anywhere, and equally doubtful any such sinks exist. Should be able to find a VBIOS with the external DP encoders though, and you can check the DCB specs that NVIDIA published at ftp://download.nvidia.com/open-gpu-doc/DCB/2/DCB-4.x-Specification.html. (Looks like there is something there under "DFP Specific Information" -> HDMI, not 100% sure where in nouveau it's decoded though.) _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
