[Bug 110831] [AMD TAHITI XT][amd-staging-drm-next] broken since 5.2-rc1 rebase

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110831

--- Comment #1 from Sylvain BERTRAND <sylvain.bertrand at gmail.com> ---
The guilty commit is following. I reverted this commit on top of the current
amd-staging-drm-next (40cc64619a2580b26f924bcabdefd555e7831a14), my system is
then booting ok. It seems to do some specific programming for vega10+ parts
which is not correct for previous families/versions parts.

commit 43ee614432d841184b158af27fda66a0929fe252 (refs/bisect/bad)
Author: Emily Deng <Emily.Deng at amd.com>
Date:   Tue May 28 10:17:04 2019 +0800

    drm/amdgpu: Need to set the baco cap before baco reset

    For passthrough, after rebooted the VM, driver will do
    a baco reset before doing other driver initialization during loading
     driver. For doing the baco reset, it will first
    check the baco reset capability. So first need to set the
    cap from the vbios information or baco reset won't be
    enabled.

    Signed-off-by: Emily Deng <Emily.Deng at amd.com>
    Reviewed-by: Evan Quan <evan.quan at amd.com>

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