From: Tom Chung chiahsuan.chung@amd.com

[Why] PSR-SU may cause some glitching randomly on several panels.

[How] Temporarily disable the PSR-SU and fallback to PSR1 for all eDP panels.

Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3388 Cc: Mario Limonciello mario.limonciello@amd.com Cc: Alex Deucher alexander.deucher@amd.com Cc: stable@vger.kernel.org

Reviewed-by: Sun peng Li sunpeng.li@amd.com Signed-off-by: Tom Chung chiahsuan.chung@amd.com Signed-off-by: Roman Li roman.li@amd.com --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c index 45858bf1523d..e140b7a04d72 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c @@ -54,7 +54,8 @@ static bool link_supports_psrsu(struct dc_link *link) if (amdgpu_dc_debug_mask & DC_DISABLE_PSR_SU) return false;

- return dc_dmub_check_min_version(dc->ctx->dmub_srv->dmub); + /* Temporarily disable PSR-SU to avoid glitches */ + return false; }

/*