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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 -
a84de5c9feaa2dbffac1f062ad3b4c0deca1ccc7 -> drm/amd/display: validate plane
degamma LUT size for private color prop) with new patches added on top of it.
Tested on Ubuntu 26.04, on Gnome Wayland.
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: Ray Wu <[email protected]>
Sent: Wednesday, September 2, 2026 12:58 AM
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]>; Lin, Ping Lei
<[email protected]>; Chen, Chen-Yu <[email protected]>; Wu, Ray
<[email protected]>
Subject: [PATCH 00/40] DC Patches September 7, 2026
This DC patchset brings improvements in multiple areas. In summary, we
highlight:
- Ensure requested LSDMA bandwidth stays within the SOP bound.
- Refactor DC_SEND_CURSOR_INFO_TO_DMU to drop the pipe_ctx param.
- Add an override for LSDMA bandwidth in the QoS table.
- Expand amdgpu_dm KUnit coverage across vblank IRQ, self-refresh, GPU
reset, plane update, MST resume, cached suspend state, writeback
transitions, atomic validation, connector-state restore, EDID CEA
parsing and DM IRQ source handling.
- Keep streamclk gating off when enabling streamclk.
- Set mpc_tree_params->opp_id during OPP resource construct.
- Add override capability for UTM table params.
- Add immediate restore to FAMS2 for DRR.
- Fix missing APG registers for DCN60 HDMI.
- Exit IPS before connector detection on resume.
- Fix HF-VSDB DSC bpc detection to be cumulative.
- Fix unused params in flip schedule.
- Enable the FW locality check in DCN6.
- Fix DC Hub reference frequency assert range.
- Dump clock registers in HW init instead of SW init.
- Validate the IRQ source in the DM IRQ handler.
- Revert "Fix CalculateFlipSchedule Calculation".
- Assorted DML updates.
- Update urgent burst calculation to account for unbounded requests.
- Add a stressed peak-bandwidth probe with DMA contention.
- Revert "Unify CalculateFlipSchedule Logic".
Cc: Dan Wheeler <[email protected]>
Alex Hung (12):
drm/amd/display: Test vblank IRQ handling
drm/amd/display: Test self refresh entry
drm/amd/display: Test GPU reset helpers
drm/amd/display: Test plane update adapter
drm/amd/display: Test MST resume guards
drm/amd/display: Test cached suspend state
drm/amd/display: Test writeback state transitions
drm/amd/display: Test atomic validation guards
drm/amd/display: Fix unused params in flip sched
drm/amd/display: Validate irq source in DM IRQ handler
drm/amd/display: Test DM IRQ handler source guard
drm/amd/display: Fix signedness mismatches in cm3
Alvin Lee (5):
drm/amd/display: Ensure requested LSDMA BW is within the SOP bound
drm/amd/display: Add override for LSDMA BW in QoS table
drm/amd/display: Add override capability for UTM table params
drm/amd/display: Enable FW locality check in DCN6
drm/amd/display: Dump clock registers in HW init instead of SW init
Austin Zheng (4):
drm/amd/display: Set DISPCLK per surface in DML
drm/amd/display: Update Urgent Burst Calculation To Account For
Unbounded Requests
Revert "drm/amd/display: Unify CalculateFlipSchedule Logic"
drm/amd/display: Update DML fields used for mode support
Bhawanpreet Lakha (2):
drm/amd/display: Cover dm_restore_drm_connector_state
drm/amd/display: Cover EDID CEA parsing helpers
Charlene Liu (1):
drm/amd/display: Make sure streamclk gating is off when enabling
streamclk
Dillon Varone (1):
drm/amd/display: Add immediate restore to FAMS2 for DRR
Fangzhi Zuo (3):
drm/amd/display: Exit IPS before connector detection on resume
drm/amd/display: Fix HF-VSDB DSC bpc detection to be cumulative
drm/amd/display: Fix NULL deref of new_stream->sink in VTEM guard
Ilya Bakoulin (1):
drm/amd/display: Fix missing APG regs for DCN60 HDMI
Joshua Aberback (1):
drm/amd/display: Remove unnecessary includes
Nevenko Stupar (1):
drm/amd/display: Fix DC Hub reference frequency assert range
Ovidiu Bunea (1):
drm/amd/display: Set mpc_tree_params->opp_id during OPP resource
construct
Samson Tam (1):
Revert "drm/amd/display: Fix CalculateFlipSchedule Calculation"
Taimur Hassan (2):
drm/amd/display: [FW Promotion] Release 0.1.74.0
drm/amd/display: Promote DC to 3.2.397
Tomasz Siemek (1):
drm/amd/display: Refactor DC_SEND_CURSOR_INFO_TO_DMU to drop pipe_ctx
Wenjing Liu (4):
drm/amd/display: Add stressed peak bandwidth probe with DMA contention
drm/amd/display: Add dml2_core_dcn6_calcs function pointer table
drm/amd/display: Route DCN6 mode support calcs through function
pointer table
drm/amd/display: Route DCN6 mode programming calcs through function
pointer table
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 141 ++--
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 50 ++
.../display/amdgpu_dm/amdgpu_dm_connector.c | 13 +-
.../display/amdgpu_dm/amdgpu_dm_connector.h | 10 +
.../display/amdgpu_dm/amdgpu_dm_freesync.c | 4 +-
.../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 5 +-
.../drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c | 5 +
.../tests/amdgpu_dm_connector_test.c | 514 +++++++++++++
.../amdgpu_dm/tests/amdgpu_dm_helpers_test.c | 2 +-
.../amdgpu_dm/tests/amdgpu_dm_irq_test.c | 45 ++
.../display/amdgpu_dm/tests/amdgpu_dm_test.c | 676 +++++++++++++++++-
.../drm/amd/display/dc/clk_mgr/dcn60/dalsmc.h | 2 +-
.../display/dc/clk_mgr/dcn60/dcn60_clk_mgr.c | 210 ++++--
.../dc/clk_mgr/dcn60/dcn60_smu_driver_if.h | 44 +-
drivers/gpu/drm/amd/display/dc/core/dc.c | 4 +-
.../gpu/drm/amd/display/dc/core/dc_debug.c | 2 +
.../drm/amd/display/dc/core/dc_hw_sequencer.c | 86 ++-
.../gpu/drm/amd/display/dc/core/dc_resource.c | 4 +
.../gpu/drm/amd/display/dc/core/dc_stream.c | 21 +-
drivers/gpu/drm/amd/display/dc/dc.h | 4 +-
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 45 +-
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h | 7 +-
drivers/gpu/drm/amd/display/dc/dc_probe.h | 1 +
.../amd/display/dc/dccg/dcn35/dcn35_dccg.c | 1 +
.../amd/display/dc/dccg/dcn42/dcn42_dccg.c | 14 +-
.../amd/display/dc/dccg/dcn42/dcn42_dccg.h | 2 +-
.../amd/display/dc/dcn30/dcn30_cm_common.c | 8 +-
.../drm/amd/display/dc/dml/dcn10/dcn10_fpu.c | 1 -
.../drm/amd/display/dc/dml/dsc/rc_calc_fpu.c | 1 -
.../gpu/drm/amd/display/dc/dml2_0/Makefile | 1 +
.../dml21/inc/bounding_boxes/dcn4_soc_bb.h | 2 +-
.../dml21/inc/bounding_boxes/dcn6_soc_bb.h | 12 +
.../dml21/inc/dml_top_dchub_registers.h | 1 +
.../dml21/inc/dml_top_soc_parameter_types.h | 2 +
.../dc/dml2_0/dml21/inc/dml_top_types.h | 13 +
.../dml2_0/dml21/src/dml2_cga/dml2_cga_dcn6.c | 4 +-
.../src/dml2_core/dml2_core_dcn4_calcs.c | 172 +++--
.../dml2_core/dml2_core_dcn5_calcs_dchub.c | 8 +-
.../dml2_core/dml2_core_dcn5_calcs_dchub.h | 23 +
.../dml2_core_dcn5_calcs_display_pipe.c | 2 +-
.../dml2_core_dcn5_funcs_mode_programming.c | 4 +
.../dml2_core_dcn5_funcs_mode_support.c | 4 +
.../src/dml2_core/dml2_core_dcn6_calcs.c | 63 +-
.../src/dml2_core/dml2_core_dcn6_calcs.h | 468 ++++++++++++
.../dml2_core/dml2_core_dcn6_calcs_dchub.c | 35 +-
.../dml2_core_dcn6_funcs_initialize.c | 2 +
.../dml2_core_dcn6_funcs_mode_programming.c | 52 +-
.../dml2_core_dcn6_funcs_mode_programming.h | 31 +
.../dml2_core_dcn6_funcs_mode_support.c | 312 ++++----
.../dml2_core_dcn6_funcs_mode_support.h | 324 +++++++++
.../src/dml2_core/dml2_core_shared_types.h | 7 +-
.../dml2_utm_soc_bb/dml2_utm_soc_bb_dcn6.c | 13 +
.../src/inc/dml2_internal_shared_types.h | 18 +
.../display/dc/hubbub/dcn20/dcn20_hubbub.c | 5 +-
.../display/dc/hubbub/dcn60/dcn60_hubbub.c | 3 +-
.../amd/display/dc/hwss/dcn60/dcn60_hwseq.c | 26 +-
.../drm/amd/display/dc/hwss/hw_sequencer.h | 25 +-
.../gpu/drm/amd/display/dc/inc/core_status.h | 2 +
.../gpu/drm/amd/display/dc/inc/core_types.h | 9 +
.../drm/amd/display/dc/opp/dcn20/dcn20_opp.c | 2 +
.../dc/resource/dcn60/dcn60_resource.c | 25 +-
.../gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 26 +
62 files changed, 3148 insertions(+), 470 deletions(-)
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2.43.0
