[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 -
0809aaeac51f26cd340f626d6446c85b04919d33 -> drm/amd/display: Promote DC to
3.2.371) 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: Hung, Alex <[email protected]>
Sent: Wednesday, February 25, 2026 6:58 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]>
Subject: [PATCH 0/8] DC Patches Feb 25, 2026
This DC patchset brings improvements in multiple areas. In summary, we have:
* Prevent integer overflow when mhz to khz
* Remove always-false branches
* Remove redundant initializers
* Silence unused variable warning
* Initialize replay_state to PR_STATE_INVALID
* Fallback to boot snapshot for dispclk
* Skip cursor cache reset if hubp powergating is disabled
Cc: Dan Wheeler <[email protected]>
Alex Hung (3):
drm/amd/display: Remove redundant initializers
drm/amd/display: Remove always-false branches
drm/amd/display: Prevent integer overflow when mhz to khz
Benjamin Nwankwo (1):
drm/amd/display: Skip cursor cache reset if hubp powergating is
disabled
Clay King (1):
drm/amd/display: Silence unused variable warning
Dillon Varone (1):
drm/amd/display: Fallback to boot snapshot for dispclk
Ivan Lipski (1):
drm/amd/display: Initialize replay_state to PR_STATE_INVALID
Taimur Hassan (1):
drm/amd/display: Promote DC to 3.2.372
.../amd/display/dc/clk_mgr/dcn35/dcn35_smu.c | 14 ++++++------
.../amd/display/dc/clk_mgr/dcn42/dcn42_smu.c | 22 +++++++++----------
drivers/gpu/drm/amd/display/dc/dc.h | 2 +-
.../display/dc/dml2_0/dml2_dc_resource_mgmt.c | 6 ++---
.../drm/amd/display/dc/dpp/dcn10/dcn10_dpp.c | 7 +++---
.../drm/amd/display/dc/dpp/dcn42/dcn42_dpp.c | 5 -----
.../amd/display/dc/hubp/dcn10/dcn10_hubp.c | 6 +++--
.../amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 6 ++++-
.../amd/display/dc/hwss/dcn42/dcn42_hwseq.c | 6 +----
.../dc/link/protocols/link_dp_panel_replay.c | 2 +-
.../dc/resource/dcn42/dcn42_resource.c | 4 ++--
11 files changed, 39 insertions(+), 41 deletions(-)
--
2.43.0
