[PATCH 00/12] DC Patches July 30, 2025

Wheeler, Daniel Daniel.Wheeler at amd.com
Tue Aug 5 13:04:19 UTC 2025 

[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
        * 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

The patchset consists of the amd-staging-drm-next branch (Head commit - 6795226cf20783be8a3ede94a26c1bc8976ad697 -> drm/amdgpu: Add chain runlists support to GC9.4.2) with new patches added on top of it.

Tested on Ubuntu 24.04.3, on Wayland and X11, using KDE Plasma and Gnome.

Tested-by: Daniel Wheeler <daniel.wheeler at amd.com>



Thank you,

Dan Wheeler
Sr. Technologist | AMD
SW Display
------------------------------------------------------------------------------------------------------------------
1 Commerce Valley Dr E, Thornhill, ON L3T 7X6
amd.com

-----Original Message-----
From: Roman.Li at amd.com <Roman.Li at amd.com>
Sent: Wednesday, July 30, 2025 2:59 PM
To: amd-gfx at lists.freedesktop.org
Cc: Wentland, Harry <Harry.Wentland at amd.com>; Li, Sun peng (Leo) <Sunpeng.Li at amd.com>; Pillai, Aurabindo <Aurabindo.Pillai at amd.com>; Li, Roman <Roman.Li at amd.com>; Lin, Wayne <Wayne.Lin at amd.com>; Chung, ChiaHsuan (Tom) <ChiaHsuan.Chung at amd.com>; Zuo, Jerry <Jerry.Zuo at amd.com>; Wheeler, Daniel <Daniel.Wheeler at amd.com>; Wu, Ray <Ray.Wu at amd.com>; LIPSKI, IVAN <IVAN.LIPSKI at amd.com>; Hung, Alex <Alex.Hung at amd.com>; Li, Roman <Roman.Li at amd.com>
Subject: [PATCH 00/12] DC Patches July 30, 2025

From: Roman Li <Roman.Li at amd.com>

This DC patchset brings improvements in multiple areas. In summary, we highlight:

* Add interface to log hw state when underflow happens
* Fix hubp programming of 3dlut fast load
* Avoid Read Remote DPCD Many Times
* More liberal vmin/vmax update for freesync
* Fix dmub access race condition

Cc: Daniel Wheeler <daniel.wheeler at amd.com>

Aurabindo Pillai (2):
  drm/amd/display: fix dmub access race condition
  drm/amd/display: more liberal vmin/vmax update for freesync

Duncan Ma (1):
  drm/amd/display: Adjust AUX-less ALPM setting

Fangzhi Zuo (1):
  drm/amd/display: Avoid Read Remote DPCD Many Times

Jingwen Zhu (1):
  drm/amd/display: limited pll vco w/a v2

Mario Limonciello (1):
  drm/amd/display: Revert "drm/amd/display: Fix AMDGPU_MAX_BL_LEVEL
    value"

Muhammad Ahmed (1):
  drm/amd/display: Adding interface to log hw state when underflow
    happens

Paul Hsieh (1):
  drm/amd/display: update dpp/disp clock from smu clock table

Reza Amini (1):
  drm/amd/display: Fixing hubp programming of 3dlut fast load

Ryan Seto (1):
  drm/amd/display: Toggle for Disable Force Pstate Allow on Disable

Siyang Liu (1):
  drm/amd/display: fix a Null pointer dereference vulnerability

Taimur Hassan (1):
  drm/amd/display: Promote DC to 3.2.344

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 81 ++++++++++++++++---  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 14 ++++
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   |  9 ++-
 .../display/dc/clk_mgr/dcn301/vg_clk_mgr.c    | 16 ++++
 drivers/gpu/drm/amd/display/dc/core/dc.c      | 37 ++++++---
 drivers/gpu/drm/amd/display/dc/dc.h           | 59 +++++++++++++-
 .../amd/display/dc/dml/dcn301/dcn301_fpu.c    | 20 ++++-
 .../display/dc/hubbub/dcn30/dcn30_hubbub.c    | 31 +++++++
 .../display/dc/hubbub/dcn30/dcn30_hubbub.h    |  6 ++
 .../display/dc/hubbub/dcn31/dcn31_hubbub.c    |  2 +
 .../display/dc/hubbub/dcn32/dcn32_hubbub.c    |  2 +
 .../display/dc/hubbub/dcn35/dcn35_hubbub.c    |  2 +
 .../display/dc/hubbub/dcn401/dcn401_hubbub.c  |  2 +
 .../amd/display/dc/hubp/dcn10/dcn10_hubp.h    |  9 ++-
 .../amd/display/dc/hubp/dcn20/dcn20_hubp.h    |  1 +
 .../amd/display/dc/hubp/dcn30/dcn30_hubp.c    | 26 ++++++
 .../amd/display/dc/hubp/dcn30/dcn30_hubp.h    |  8 +-
 .../amd/display/dc/hubp/dcn31/dcn31_hubp.c    | 15 ++++
 .../amd/display/dc/hubp/dcn31/dcn31_hubp.h    |  6 +-
 .../amd/display/dc/hubp/dcn32/dcn32_hubp.c    |  3 +
 .../amd/display/dc/hubp/dcn35/dcn35_hubp.c    |  3 +
 .../amd/display/dc/hubp/dcn401/dcn401_hubp.c  | 41 ++++++++++  .../amd/display/dc/hubp/dcn401/dcn401_hubp.h  |  8 +-
 .../amd/display/dc/hwss/dcn10/dcn10_hwseq.c   | 63 +++++++++++----
 .../amd/display/dc/hwss/dcn30/dcn30_hwseq.c   | 48 +++++++++++
 .../amd/display/dc/hwss/dcn30/dcn30_hwseq.h   |  5 ++
 .../amd/display/dc/hwss/dcn30/dcn30_init.c    |  1 +
 .../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 | 36 +++++----  .../amd/display/dc/hwss/dcn401/dcn401_init.c  |  1 +
 .../drm/amd/display/dc/hwss/hw_sequencer.h    |  4 +
 .../gpu/drm/amd/display/dc/inc/hw/dchubbub.h  |  2 +  drivers/gpu/drm/amd/display/dc/inc/hw/hubp.h  | 21 ++++-
 drivers/gpu/drm/amd/display/dc/inc/hw/mpc.h   | 11 +++
 .../link/protocols/link_edp_panel_control.c   |  2 +-
 .../dc/resource/dcn32/dcn32_resource.h        |  3 +-
 .../dc/resource/dcn401/dcn401_resource.c      |  1 +
 .../dc/resource/dcn401/dcn401_resource.h      |  3 +-
 drivers/gpu/drm/amd/display/dmub/dmub_srv.h   |  1 +
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   |  3 +-
 .../gpu/drm/amd/display/dmub/src/dmub_dcn31.c |  1 +
 45 files changed, 545 insertions(+), 67 deletions(-)

--
2.34.1

More information about the amd-gfx mailing list