diff options
| author | Imre Deak <imre.deak@intel.com> | 2022-06-14 12:45:37 +0300 |
|---|---|---|
| committer | Imre Deak <imre.deak@intel.com> | 2022-06-16 21:41:02 +0300 |
| commit | 7a710a8bc909313951eb9252d8419924c771d7c2 (patch) | |
| tree | bbc5907ad4bdba747aec2fba49260e1894af9054 /drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c | |
| parent | 6da623684cdbe4532c55ed7f18b9b46badb730cd (diff) | |
| download | linux-7a710a8bc909313951eb9252d8419924c771d7c2.tar.bz2 | |
drm/dp/mst: Read the extended DPCD capabilities during system resume
The WD22TB4 Thunderbolt dock at least will revert its DP_MAX_LINK_RATE
from HBR3 to HBR2 after system suspend/resume if the DP_DP13_DPCD_REV
registers are not read subsequently also as required.
Fix this by reading DP_DP13_DPCD_REV registers as well, matching what is
done during connector detection. While at it also fix up the same call
in drm_dp_mst_dump_topology().
Cc: Lyude Paul <lyude@redhat.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5292
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Cc: <stable@vger.kernel.org> # v5.14+
Reviewed-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220614094537.885472-1-imre.deak@intel.com
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_atomfirmware.c')
0 files changed, 0 insertions, 0 deletions