[Bug 107894] [Gemini Lake] HDMI 2.0 compliance test failed - HF1-51 AVI InfoFrame for Y420VDB and Y420CMBD

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107894

--- Comment #9 from Clinton Taylor <clinton.a.taylor at intel.com> ---

> I suppose we could just look for the HDMI forum vsdb instead?

Still not enough as some 64:27 modes are HDMI 2.0 VICs and they could just be
located in the DTD's. Ex. VIC 90 (2560x1080 at 60) is an HDMI 2.0 VIC that doesn't
require scrambling and wouldn't be included in the vsdb. However, 2560x1080 at 60
is native in many HDMI 1.X monitors. 

My current fix for this compliance issue is:

bool is_hdmi2_sink = connector->display_info.hdmi.scdc.supported ||
                                crtc_state->ycbcr420;

to check for a YCbCr420. However this only fixes the problem for VIC 95, 96,
etc. I still need to find a solution for other HDMI 2.0 VICs. Maybe OR in vsdb
present, OR HDMI forum vendor data block present. Need to cover as many cases
as necessary or we are just moving the problem to another test failure.

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