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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 -
5234cbd0f4b39bbf04640566218b08ff47d51bc7 -> drm/amd/display: Promote DC to
3.2.392) 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: Tom Chung <[email protected]>
Sent: Wednesday, August 5, 2026 2:36 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]>
Subject: [PATCH 00/34] DC Patches Aug 10 2026
This DC patchset brings improvements in multiple areas. In summary, we have:
- DCN6 fixes on GPUVM calculations, HostVM and SOCBB VM config,
clkmgr interfaces, and peak bandwidth measurement
- Unified fast update classification paths and inbox0 HW lock on DCN35
- HDMI FRL fixes on LT timeout behaviour and cap restore during
non-destructive link verify
- Greatly enhanced KUnit coverage across CRTC, VRR, and cursor paths
- eDP panel polarity control, FreeSync range quirk, and Z8-based
zstate support
- DCE ASIC code gated behind CONFIG_DRM_AMD_DC_DCE for DCN-only builds
- Fixes on HPD filter programming, DMUB DIG PHY wait, dcn42b
force_min_dcfclk clamp, audio tests, and UTM client QC profile override
Cc: Daniel Wheeler <[email protected]>
Alex Hung (7):
drm/amd/display: test stream VRR updates
drm/amd/display: test VRR IRQ parameters
drm/amd/display: test VRR transitions
drm/amd/display: test dm_check_cursor_fb
drm/amd/display: test native cursor state check
drm/amd/display: test dm_plane_color_pipeline_active
drm/amd/display: test amdgpu_dm_crtc_get_cursor_mode
Alvin Lee (2):
drm/amd/display: Update dcn60 clkmgr interfaces
drm/amd/display: Apply workaround to limit SopCount for now
Bhawanpreet Lakha (6):
drm/amd/display: Cover crtc duplicate_state stream and null guard
drm/amd/display: Cover crtc destroy callback
drm/amd/display: Add reset_state existing-state branch test
drm/amd/display: Add amdgpu_dm_crtc_late_register test
drm/amd/display: Add amdgpu_dm_crtc_init tests
drm/amd/display: Add KUnit tests for
amdgpu_dm_crtc_helper_atomic_check
Charlene Liu (2):
drm/amd/display: fix HPD program filter programming
drm/amd/display: add a NULL pointer check
Dillon Varone (1):
drm/amd/display: Add support for overriding UTM client QC profile
Fangzhi Zuo (2):
drm/amd/display: Force FreeSync range minimum on quirky panels
drm/amd/display: restore FRL cap on non-destructive HDMI link verify
Gabe Teeger (1):
drm/amd/display: clamp force_min_dcfclk to dcn42b range
Gaghik Khachatrian (1):
drm/amd/display: gate DCE ASIC code behind CONFIG_DRM_AMD_DC_DCE
Harry VanZyllDeJong (1):
drm/amd/display: eDP panel polarity control and test support
Nicholas Kazlauskas (2):
drm/amd/display: Fix crash in DCN5/6 calcs when GPUVM enabled
drm/amd/display: Fix HostVM init and SOCBB VM config for DCN6
Ovidiu Bunea (1):
drm/amd/display: Decide zstate_support based off Z8 global support
Rafal Ostrowski (1):
drm/amd/display: Unify fast update classification paths
Ray Wu (1):
drm/amd/display: Align KUnit tests Makefile license header
Relja Vojvodic (1):
drm/amd/display: Update and revert FRL LT Timeout behaviour
Sridevi Arvindekar (1):
drm/amd/display: Fix audio test errors
Taimur Hassan (1):
drm/amd/display: Promote DC to 3.2.393
Wayne Lin (1):
drm/amd/display: Extend DMUB wait for DIG PHY programming commands
Wenjing Liu (1):
drm/amd/display: Fix DCN6 peak bandwidth measurement overshoot
YiLing Chen (1):
drm/amd/display: Extend inbox0 HW lock support to DCN35
drivers/gpu/drm/amd/display/Kconfig | 9 +
.../display/amdgpu_dm/amdgpu_dm_connector.c | 12 +
.../amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 10 +-
.../amd/display/amdgpu_dm/amdgpu_dm_crtc.h | 6 +
.../amd/display/amdgpu_dm/amdgpu_dm_cursor.c | 16 +-
.../amd/display/amdgpu_dm/amdgpu_dm_cursor.h | 6 +
.../display/amdgpu_dm/amdgpu_dm_freesync.c | 3 +
.../amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 18 +
.../drm/amd/display/amdgpu_dm/tests/Makefile | 4 +-
.../amdgpu_dm/tests/amdgpu_dm_crtc_test.c | 645 ++++++++++++++++
.../amdgpu_dm/tests/amdgpu_dm_cursor_test.c | 694 ++++++++++++++++++
.../amdgpu_dm/tests/amdgpu_dm_freesync_test.c | 407 ++++++++++
.../amdgpu_dm/tests/amdgpu_dm_helpers_test.c | 17 +
.../display/dc/bios/command_table_helper.c | 7 +-
.../display/dc/bios/command_table_helper2.c | 2 +
.../gpu/drm/amd/display/dc/clk_mgr/Makefile | 8 +
.../gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c | 4 +
.../display/dc/clk_mgr/dce100/dce_clk_mgr.c | 115 ---
.../display/dc/clk_mgr/dce100/dce_clk_mgr.h | 8 +-
.../dc/clk_mgr/dce112/dce112_clk_mgr.c | 59 --
.../dc/clk_mgr/dce112/dce112_clk_mgr.h | 4 +-
.../display/dc/clk_mgr/dcn10/dcn10_clk_mgr.c | 181 +++++
.../display/dc/clk_mgr/dcn10/dcn10_clk_mgr.h | 29 +
.../dc/clk_mgr/dcn42b/dcn42b_clk_mgr.c | 30 +-
.../drm/amd/display/dc/clk_mgr/dcn60/dalsmc.h | 344 ++-------
.../display/dc/clk_mgr/dcn60/dcn60_clk_mgr.c | 115 +--
.../display/dc/clk_mgr/dcn60/dcn60_clk_mgr.h | 17 +-
.../dc/clk_mgr/dcn60/dcn60_clk_mgr_smu_msg.c | 220 +++++-
.../dc/clk_mgr/dcn60/dcn60_clk_mgr_smu_msg.h | 167 ++++-
.../dc/clk_mgr/dcn60/dcn60_smu_driver_if.h | 76 ++
drivers/gpu/drm/amd/display/dc/core/dc.c | 246 +------
.../drm/amd/display/dc/core/dc_link_exports.c | 22 +
.../gpu/drm/amd/display/dc/core/dc_resource.c | 79 ++
drivers/gpu/drm/amd/display/dc/dc.h | 42 +-
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 54 +-
drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h | 27 +
drivers/gpu/drm/amd/display/dc/dc_stream.h | 3 +
drivers/gpu/drm/amd/display/dc/dc_types.h | 1 +
.../display/dc/dio/dcn10/dcn10_link_encoder.c | 10 +-
.../dc/dio/dcn42/dcn42_dio_link_encoder.c | 4 +-
.../dml2_0/dml21/dml21_translation_helper.c | 2 +-
.../dc/dml2_0/dml21/inc/dml_top_types.h | 1 +
.../dml21/src/dml2_core/dml2_core_dcn4.c | 4 +
.../src/dml2_core/dml2_core_dcn4_calcs.c | 15 +
.../src/dml2_core/dml2_core_dcn4_calcs.h | 1 +
.../dml2_core/dml2_core_dcn5_calcs_dchub.c | 2 +-
.../src/dml2_core/dml2_core_shared_types.h | 2 +
.../gpu/drm/amd/display/dc/gpio/hw_factory.c | 4 +
.../drm/amd/display/dc/gpio/hw_translate.c | 4 +
.../display/dc/hubbub/dcn10/dcn10_hubbub.h | 11 +-
.../display/dc/hubbub/dcn60/dcn60_hubbub.c | 206 +++++-
.../display/dc/hubbub/dcn60/dcn60_hubbub.h | 19 +-
drivers/gpu/drm/amd/display/dc/hwss/Makefile | 6 +
.../amd/display/dc/hwss/dce110/dce110_hwseq.c | 2 +
.../amd/display/dc/hwss/dcn35/dcn35_hwseq.c | 46 ++
.../amd/display/dc/hwss/dcn35/dcn35_hwseq.h | 4 +
.../amd/display/dc/hwss/dcn35/dcn35_init.c | 2 +
.../amd/display/dc/hwss/dcn351/dcn351_init.c | 2 +
.../amd/display/dc/hwss/dcn401/dcn401_hwseq.c | 15 +-
.../amd/display/dc/hwss/dcn401/dcn401_hwseq.h | 2 +-
.../amd/display/dc/hwss/dcn42/dcn42_hwseq.c | 13 +-
.../amd/display/dc/hwss/dcn42/dcn42_hwseq.h | 2 +-
.../amd/display/dc/hwss/dcn60/dcn60_hwseq.c | 16 +-
.../drm/amd/display/dc/hwss/hw_sequencer.h | 2 +-
.../gpu/drm/amd/display/dc/inc/hw/dchubbub.h | 1 +
.../gpu/drm/amd/display/dc/inc/link_service.h | 5 +-
drivers/gpu/drm/amd/display/dc/irq/Makefile | 2 +
.../dc/irq/dce110/irq_service_dce110.c | 21 -
.../dc/irq/dce110/irq_service_dce110.h | 9 -
.../gpu/drm/amd/display/dc/irq/irq_service.c | 28 +
.../gpu/drm/amd/display/dc/irq/irq_service.h | 9 +
.../drm/amd/display/dc/link/link_detection.c | 2 +-
.../drm/amd/display/dc/link/link_factory.c | 4 +
.../link/protocols/link_edp_panel_control.c | 30 +
.../link/protocols/link_edp_panel_control.h | 4 +
.../display/dc/link/protocols/link_hdmi_frl.c | 32 +-
.../gpu/drm/amd/display/dc/resource/Makefile | 4 +
.../dc/resource/dce112/dce112_resource.c | 62 --
.../dc/resource/dcn60/dcn60_resource.c | 10 +-
.../dc/resource/dcn60/dcn60_resource.h | 9 +-
.../dcn60/dcn60_soc_and_ip_translator.c | 6 +-
.../gpu/drm/amd/display/include/dal_asic_id.h | 5 +
82 files changed, 3357 insertions(+), 990 deletions(-) create mode 100644
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/dcn10_clk_mgr.c
create mode 100644 drivers/gpu/drm/amd/display/dc/clk_mgr/dcn10/dcn10_clk_mgr.h
create mode 100644
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn60/dcn60_smu_driver_if.h
--
2.43.0
