6.6-stable review patch. If anyone has any objections, please let me know.
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From: Tom Chung chiahsuan.chung@amd.com
commit e8863f8b0316d8ee1e7e5291e8f2f72c91ac967d upstream.
[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 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 Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com (cherry picked from commit 6deeefb820d0efb0b36753622fb982d03b37b3ad) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c @@ -51,7 +51,8 @@ static bool link_supports_psrsu(struct d !link->dpcd_caps.psr_info.psr2_su_y_granularity_cap) return false;
- return dc_dmub_check_min_version(dc->ctx->dmub_srv->dmub); + /* Temporarily disable PSR-SU to avoid glitches */ + return false; }
/*