[Bug 215511] Dual monitor with amd 5700 causes system to hang at startup.

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215511

--- Comment #4 from Jose Mestre (pmestre@gmail.com) ---
0f591d17e36e08313b0c440b99b0e57b47e01a9a is the first bad commit
commit 0f591d17e36e08313b0c440b99b0e57b47e01a9a
Author: Angus Wang <angus.wang@amd.com>
Date:   Thu Dec 9 17:27:01 2021 -0500

    drm/amd/display: Changed pipe split policy to allow for multi-display pipe
split

    commit ee2698cf79cc759a397c61086c758d4cc85938bf upstream.

    [WHY]
    Current implementation of pipe split policy prevents pipe split with
    multiple displays connected, which caused the MCLK speed to be stuck at
    max

    [HOW]
    Changed the pipe split policies so that pipe split is allowed for
    multi-display configurations

    Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1522
    Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1709
    Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1655
    Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1403

    Note this is a backport of this commit from amdgpu drm-next for 5.16.

    Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
    Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
    Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
    Signed-off-by: Angus Wang <angus.wang@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

 drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c   | 2 +-
 drivers/gpu/drm/amd/display/dc/dcn21/dcn21_resource.c   | 2 +-
 drivers/gpu/drm/amd/display/dc/dcn30/dcn30_resource.c   | 2 +-
 drivers/gpu/drm/amd/display/dc/dcn301/dcn301_resource.c | 2 +-
 drivers/gpu/drm/amd/display/dc/dcn302/dcn302_resource.c | 2 +-
 drivers/gpu/drm/amd/display/dc/dcn303/dcn303_resource.c | 2 +-
 drivers/gpu/drm/amd/display/dc/dcn31/dcn31_resource.c   | 2 +-
 7 files changed, 7 insertions(+), 7 deletions(-)

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