[Bug 109080] Broken video playback colors on AMD Ryzen 5 (PRO) Mobile 2500U in 18.1 and 18.2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109080

            Bug ID: 109080
           Summary: Broken video playback colors on AMD Ryzen 5 (PRO)
                    Mobile 2500U in 18.1 and 18.2
           Product: Mesa
           Version: 18.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Gallium/radeonsi
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: zajec5 at gmail.com
        QA Contact: dri-devel at lists.freedesktop.org

Created attachment 142840
  --> https://bugs.freedesktop.org/attachment.cgi?id=142840&action=edit
Screenshot for Chromium with corrupted video

When playing video on YouTube using Chromium I see broken colors.

Info from the YouTube player:
Codecs vp09.00.51.08.01.01.01.01 (247) / opus (251)
Color bt709 / bt709


I experience this problem on two machines:

1) HP EliteBook 745 G5 with Ryzen 5 PRO 2500U
It runs 1.03.01 BIOS with 0x0810100b CPU microcode.

2) MateBook D with Ryzen 5 2500U
It runs 1.12 BIOS with 0x08101007 CPU microcode.


I've bisected the *fix* down to the:
commit 55e7de7b193535133d4324e9f601ae44a0cdd9a7
Author: Boyuan Zhang <boyuan.zhang at amd.com>
Date:   Wed Oct 17 15:03:30 2018 -0400

    radeonsi: enable vcn jpeg decode for raven

    Enable vcn jpeg decode for raven.

    Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>
    Reviewed-by: Leo Liu <leo.liu at amd.com>


Is that possible to either:
1) cherry-pick those vcn/va fixes to the 18.1 and 18.2 branches
2) disable unsupported formats support in the 18.2 and 18.2 branches
please?

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