[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 #8 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Clinton Taylor from comment #7)
> During drm_hdmi_avi_infoframe_from_display_mode() the code assumes a VIC of
> 95 and without SCDC supported is an illegal value and sets the VIC to 0.
> 
> Of course in YCbCr420 mode a VIC of 95 doesn't require SCDC to be supported
> and the test equipment is not enabling SCDC. The i915 drivers assumption
> that SCDC supported is the only way to know that the SINK is HDMI 2.0 is
> incorrect.

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

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