[Bug 103364] Black Screen Flickering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103364

--- Comment #9 from shashank.sharma at intel.com <shashank.sharma at intel.com> ---
Even though this series provides the infrastructure for YCBCR444, there is no
interface for user (like a drm_property) to select its preference of YCBCR444
over RGB. We had tried to add this property during HDMI 2.0 enabling but we
realized that it was not mapping to the long term goal of HDR pipeline support.
So, to summarize, modeset picks RGB output by default.

In case of LSPCON based YCBCR 4:2:0 outputs, we run pipe at YCBCR 4:4:4 config,
and then LSPCON scales it down to 4:2:0 sub-sampling, and that's where we need
the infrastructure.

So in order to support YCBCR 4:4:4 outputs, we need a drm_property which picks
user's preference between RGB/YCBCR444. 

- Shashank

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