[Bug 110496] [GLK] no signal - with samsung 4k TV - HDMI UHD Color (ENABLED)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110496

--- Comment #7 from shashank.sharma at intel.com <shashank.sharma at intel.com> ---
I was working with Piotr in a parallel thread, and I could root cause the
problem while handling deep color stuff.
- When we allow the CMDB modes to be treated as 4:2:0 modes (rather than RGB)
&& - we don't allow the deep color output (12 BPC)
we could see both 4k at 30 and 4k at 60 displays. 

I will add some more findings here. Meanwhile, adding patches which we used to
enable 4k at 60.

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