linux/drivers/gpu/drm/amd/display/dmub/src, branch master

drm/amd/display: Fix Compiler warnings in dmub

2026-03-30T19:12:41Z

[Why] Resolve compiler warnings by marking unused parameters explicitly. [How] In .c and .h files, keep parameter names in signatures and add a line with`(void)param;` inside the function body Preserved function signatures and avoids breaking code paths that may reference the parameter under conditional compilation. Reviewed-by: Aric Cyr Signed-off-by: Gaghik Khachatrian Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher

drm/amd/display: Fix Silence Conversion Warnings in Dmub

2026-03-30T18:54:47Z

Fix Conversion that might result in a loss of data warnings in dmub/src/: - dmub_dcn20/31/32/35/42/60/401.c: Add ASSERT(value <= 0xFF) and explicit (uint8_t) cast when storing REG_GET results into uint8_t debug struct fields. Add != 0 for bool assignments from uint32_t bitfield reads. - dmub_reg.c: Cast va_arg shift value to uint8_t with ASSERT guard before passing to set_reg_field_value_masks(). - dmub_srv.c: Widen num_pending to uint64_t to match uint64_t arithmetic; use != 0 for bool assignments from unsigned expressions. No functional change intended. Reviewed-by: Dillon Varone Signed-off-by: Gaghik Khachatrian Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher

drm/amd/display: Remove check for DC_DMCUB_ENABLE on DCN42

2026-03-30T18:39:25Z

[why] DCN without DMCUB is not a supported configuration on DCN42. [how] Remove the DC_DMCUB_ENABLE fuse register check and remove the corresponding entries in the DCN42 DMUB register list. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Gabe Teeger Signed-off-by: Matthew Stewart Signed-off-by: Roman Li Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher

drm/amd/display: Update dpia supported configuration

2026-03-23T18:10:58Z

[Why & How] Init a flag to track if dpia enabled previously and update that to boot options. Reviewed-by: Ovidiu Bunea Signed-off-by: Meenakshikumar Somasundaram Signed-off-by: Roman Li Signed-off-by: Chuanyu Tseng Signed-off-by: Alex Deucher

drm/amd/display: Enable dcn42 DMUB

2026-02-23T19:28:33Z

Enable DMUB support for DCN 4.2 Signed-off-by: Roman Li Acked-by: Harry Wentland Signed-off-by: Alex Deucher

drm/amd/display: Add DMUB support for dcn42

2026-02-23T19:28:33Z

DMUB support for DCN 4.2 Signed-off-by: Roman Li Acked-by: Harry Wentland Signed-off-by: Alex Deucher

drm/amd/display: Enable bootcrc on FW side

2026-01-27T23:10:38Z

[Why] The bootcrc feature is controlled on the FW side. [How] Pass the control bits in boot options to FW. Reviewed-by: ChiaHsuan (Tom) Chung Signed-off-by: Wayne Lin Signed-off-by: Aurabindo Pillai Tested-by: Dan Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Add new fields to fams2 config

2026-01-05T21:59:59Z

[WHY&HOW] Adds new fields to the fams2 configuration structure. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Dillon Varone Signed-off-by: Chenyu Chen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Consolidate dmub fb info to a single struct

2026-01-05T21:59:59Z

[WHY&HOW] Consolidate dmub fb info into a single structure to simplify translation between components. Reviewed-by: Nicholas Kazlauskas Signed-off-by: Dillon Varone Signed-off-by: Chenyu Chen Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Add additional checks for PSP footer size

2025-12-08T18:56:37Z

[WHY & HOW] Newer ASICs have different PSP footer sizes which lead to driver failing to locate the DMCUB FW meta info, which in turn causes improper DMCUB FW loading and causes DMCUB to crash. Add support for custom PSP footer sizes and check 512B by default as well. Reviewed-by: Charlene Liu Signed-off-by: Ovidiu Bunea Signed-off-by: Alex Hung Tested-by: Dan Wheeler Signed-off-by: Alex Deucher