[Bug 108503] Display flashes when PSR enabled on gen9

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108503

--- Comment #27 from Ronald <ronald at innovation.ch> ---
(In reply to Ronald from comment #25)
> Lastly, not sure if all this info is in the log (didn't see it, but could've
> missed it) or if it's useful to you, but there is the full output from
> /sys/kernel/debug/dri/0/eDP-1/i915_dpcd:
> 
> 0000: 11 0a 84 41 00 00 01 80 02 00 00 00 0f 0b 00
> 0070: 01 01
> 0080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 0100: 0a 84 00 00 00 00 00 00 01 08 00
> 0200: 01 00 77 77 01 01 00 00
> 0600: 01
> 0700: 02
> 0701: 83 97 00 00
> 0720: 81 04 00 00 10 0f 0f 00 00 00 00 00 00 00 00 00
> 0732: 00 00
Sorry, the above was actually from a different kernel. For psr-debug-108503 rev
2 the 0200 line reads as follows (the rest is identical):

display blank:   0200: 01 00 33 33 80 00 00 00
display visible: 0200: 01 00 77 77 81 01 00 00

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