[Public]
Hi all,
This week this patchset was tested on 4 systems, two dGPU and two APU based,
and tested across multiple display and connection types.
APU
* Single Display eDP -> 1080p 60hz, 1920x1200 165hz, 3840x2400 60hz
* Single Display DP (SST DSC) -> 4k144hz, 4k240hz
* Multi display -> eDP + DP/HDMI/USB-C -> 1080p 60hz eDP + 4k 144hz, 4k
240hz (Includes USB-C to DP/HDMI adapters)
* Thunderbolt -> LG Ultrafine 5k
* MST DSC -> Cable Matters 101075 (DP to 3x DP) with 3x 4k60hz
displays, HP Hook G2 with 2x 4k60hz displays
* USB 4 -> HP Hook G4, Lenovo Thunderbolt Dock, both with 2x 4k60hz DP
and 1x 4k60hz HDMI displays
* SST PCON -> Club3D CAC-1085 + 1x 4k 144hz, FRL3, at a max resolution
supported by the dongle of 4k 120hz YUV420 12bpc.
* MST PCON -> 1x 4k 144hz, FRL3, at a max resolution supported by the
adapter of 4k 120hz RGB 8bpc.
DGPU
* Single Display DP (SST DSC) -> 4k144hz, 4k240hz
* Multiple Display DP -> 4k240hz + 4k144hz
* MST (Startech MST14DP123DP [DP to 3x DP] and 2x 4k 60hz displays)
* MST DSC (with Cable Matters 101075 [DP to 3x DP] with 3x 4k60hz
displays)
The testing is a mix of automated and manual tests. Manual testing includes
(but is not limited to)
* Changing display configurations and settings
* Video/Audio playback
* Benchmark testing
* Suspend/Resume testing
* Feature testing (Freesync, HDCP, etc.)
Automated testing includes (but is not limited to)
* Script testing (scripts to automate some of the manual checks)
* IGT testing
The testing is mainly tested on the following displays, but occasionally there
are tests with other displays
* Samsung G8 Neo 4k240hz
* Samsung QN55QN95B 4k 120hz
* Acer XV322QKKV 4k144hz
* HP U27 4k Wireless 4k60hz
* LG 27UD58B 4k60hz
* LG 32UN650WA 4k60hz
* LG Ultrafine 5k 5k60hz
* AU Optronics B140HAN01.1 1080p 60hz eDP
* AU Optronics B160UAN01.J 1920x1200 165hz eDP
* Samsung ATNA60YV02-0 3840x2400 60Hz OLED eDP
The patchset consists of the amd-staging-drm-next branch (Head commit -
d51928df9271aa6c6c201448e358c25d5cfc5706 -> drm/amd/display: Promote DC to
3.2.365) with new patches added on top of it.
Tested on Ubuntu 24.04.3, on Wayland and X11, using Gnome.
Tested-by: Dan Wheeler <[email protected]>
Thank you,
Dan Wheeler
Sr. Technologist | AMD
SW Display
------------------------------------------------------------------------------------------------------------------
1 Commerce Valley Dr E, Thornhill, ON L3T 7X6
amd.com
-----Original Message-----
From: Matthew Stewart <[email protected]>
Sent: Wednesday, January 14, 2026 3:22 PM
To: [email protected]
Cc: Wentland, Harry <[email protected]>; Li, Sun peng (Leo)
<[email protected]>; Pillai, Aurabindo <[email protected]>; Li, Roman
<[email protected]>; Lin, Wayne <[email protected]>; Chung, ChiaHsuan (Tom)
<[email protected]>; Zuo, Jerry <[email protected]>; Wheeler, Daniel
<[email protected]>; Wu, Ray <[email protected]>; LIPSKI, IVAN
<[email protected]>; Hung, Alex <[email protected]>; Stewart, Matthew
<[email protected]>
Subject: [PATCH 00/14] DC Patches Jan 14, 2026
This DC patchset brings improvements in multiple areas. In summary, we have:
- Update memory QoS measurement interface.
- Panel inst for monitors.
- Disable FEC when powering down encoders.
- Detect panel type from VSDB.
- Check NULL before accessing a variable.
- Initialize a default to phyd32clk.
- Revert "init dispclk from bootup clock".
- Add IPS residency info to debugfs.
- Ensure link output is disabled in backend reset for PLL_ON.
- Remove unused code.
- Add DMU crash recovery callback to DM.
- Remove coverity comments.
Cc: Dan Wheeler <[email protected]>
Alex Hung (3):
drm/amd/display: Check NULL before accessing a variable
drm/amd/display: Initialize a default to phyd32clk
drm/amd/display: Remove coverity comments and fix spaces
Charlene Liu (1):
drm/amd/display: Remove unused code
Mario Limonciello (AMD) (1):
drm/amd/display: Detect panel type from VSDB
Nicholas Kazlauskas (2):
drm/amd/display: Ensure link output is disabled in backend reset for
PLL_ON
drm/amd/display: Add DMU crash recovery callback to DM
Ovidiu Bunea (1):
drm/amd/display: Disable FEC when powering down encoders
Peichen Huang (1):
drm/amd/display: panel inst for monitors
Ray Wu (1):
drm/amd/display: Add IPS residency info to debugfs
Taimur Hassan (1):
drm/amd/display: Promote DC to 3.2.366
Wang, Sung-huai (2):
drm/amd/display: Revert "init dispclk from bootup clock for DCN314"
drm/amd/display: Revert "init dispclk from bootup clock for DCN315"
Wenjing Liu (1):
drm/amd/display: update memory QoS measurement interface
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 15 ++
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 11 ++
.../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 71 +++++++++-
.../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 6 +
.../dc/clk_mgr/dcn314/dcn314_clk_mgr.c | 133 +-----------------
.../dc/clk_mgr/dcn314/dcn314_clk_mgr.h | 5 -
.../dc/clk_mgr/dcn315/dcn315_clk_mgr.c | 90 +-----------
.../dc/clk_mgr/dcn315/dcn315_clk_mgr.h | 1 -
drivers/gpu/drm/amd/display/dc/core/dc.c | 22 +--
drivers/gpu/drm/amd/display/dc/dc.h | 5 +-
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 35 +++--
drivers/gpu/drm/amd/display/dc/dc_types.h | 7 +
drivers/gpu/drm/amd/display/dc/dm_helpers.h | 1 +
.../amd/display/dc/hwss/dce110/dce110_hwseq.c | 24 ++--
.../amd/display/dc/hwss/dcn20/dcn20_hwseq.c | 2 -
.../amd/display/dc/hwss/dcn30/dcn30_init.c | 1 -
.../amd/display/dc/hwss/dcn301/dcn301_init.c | 1 -
.../amd/display/dc/hwss/dcn31/dcn31_hwseq.c | 16 ++-
.../amd/display/dc/hwss/dcn31/dcn31_init.c | 1 -
.../amd/display/dc/hwss/dcn314/dcn314_init.c | 1 -
.../amd/display/dc/hwss/dcn32/dcn32_init.c | 1 -
.../amd/display/dc/hwss/dcn35/dcn35_init.c | 1 -
.../amd/display/dc/hwss/dcn351/dcn351_init.c | 1 -
.../amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 2 +-
.../amd/display/dc/hwss/dcn401/dcn401_init.c | 1 -
.../drm/amd/display/dc/hwss/hw_sequencer.h | 38 +----
.../gpu/drm/amd/display/dc/inc/core_types.h | 8 ++
.../gpu/drm/amd/display/dc/inc/hw/dchubbub.h | 28 ++--
.../dc/link/protocols/link_dp_panel_replay.c | 32 +++--
.../link/protocols/link_edp_panel_control.c | 15 +-
.../gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 11 +-
.../amd/display/modules/power/power_helpers.c | 5 +-
32 files changed, 256 insertions(+), 335 deletions(-)
--
2.52.0
