linux-stable.git/drivers/gpu/drm/amd, branch linux-6.15.y

drm/amd/display: Allow DCN301 to clear update flags

2025-08-20T16:36:35+00:00

commit 2d418e4fd9f1eca7dfce80de86dd702d36a06a25 upstream.

[Why & How]
Not letting DCN301 to clear after surface/stream update results
in artifacts when switching between active overlay planes. The issue
is known and has been solved initially. See below:
(https://gitlab.freedesktop.org/drm/amd/-/issues/3441)

Fixes: f354556e29f4 ("drm/amd/display: limit clear_update_flags t dcn32 and above")
Reviewed-by: Mario Limonciello 
Signed-off-by: Ivan Lipski 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Greg Kroah-Hartman

drm/amdgpu: fix incorrect vm flags to map bo

2025-08-20T16:36:27+00:00

[ Upstream commit 040bc6d0e0e9c814c9c663f6f1544ebaff6824a8 ]

It should use vm flags instead of pte flags
to specify bo vm attributes.

Fixes: 7946340fa389 ("drm/amdgpu: Move csa related code to separate file")
Signed-off-by: Jack Xiao 
Reviewed-by: Likun Gao 
Signed-off-by: Alex Deucher 
(cherry picked from commit b08425fa77ad2f305fe57a33dceb456be03b653f)
Signed-off-by: Sasha Levin

drm/amdgpu: fix vram reservation issue

2025-08-20T16:36:27+00:00

[ Upstream commit 10ef476aad1c848449934e7bec2ab2374333c7b6 ]

The vram block allocation flag must be cleared
before making vram reservation, otherwise reserving
addresses within the currently freed memory range
will always fail.

Fixes: c9cad937c0c5 ("drm/amdgpu: add drm buddy support to amdgpu")
Signed-off-by: YiPeng Chai 
Reviewed-by: Hawking Zhang 
Signed-off-by: Alex Deucher 
(cherry picked from commit d38eaf27de1b8584f42d6fb3f717b7ec44b3a7a1)
Signed-off-by: Sasha Levin

drm/amd/display: Disable dsc_power_gate for dcn314 by default

2025-08-20T16:36:16+00:00

[ Upstream commit 02f3ec53177243d32ee8b6f8ba99136d7887ee3a ]

[Why]
"REG_WAIT timeout 1us * 1000 tries - dcn314_dsc_pg_control line"
warnings seen after resuming from s2idle.
DCN314 has issues with DSC power gating that cause REG_WAIT timeouts
when attempting to power down DSC blocks.

[How]
Disable dsc_power_gate for dcn314 by default.

Reviewed-by: Nicholas Kazlauskas 
Signed-off-by: Roman Li 
Signed-off-by: Ivan Lipski 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Avoid configuring PSR granularity if PSR-SU not supported

2025-08-20T16:36:16+00:00

[ Upstream commit a5ce8695d6d1b40d6960d2d298b579042c158f25 ]

[Why]
If PSR-SU is disabled on the link, then configuring su_y granularity in
mod_power_calc_psr_configs() can lead to assertions in
psr_su_set_dsc_slice_height().

[How]
Check the PSR version in amdgpu_dm_link_setup_psr() to determine whether
or not to configure granularity.

Reviewed-by: Sun peng (Leo) Li 
Signed-off-by: Mario Limonciello 
Signed-off-by: Ivan Lipski 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Only finalize atomic_obj if it was initialized

2025-08-20T16:36:15+00:00

[ Upstream commit b174084b3fe15ad1acc69530e673c1535d2e4f85 ]

[Why]
If amdgpu_dm failed to initalize before amdgpu_dm_initialize_drm_device()
completed then freeing atomic_obj will lead to list corruption.

[How]
Check if atomic_obj state is initialized before trying to free.

Reviewed-by: Harry Wentland 
Signed-off-by: Mario Limonciello 
Signed-off-by: Ivan Lipski 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Avoid trying AUX transactions on disconnected ports

2025-08-20T16:36:15+00:00

[ Upstream commit deb24e64c8881c462b29e2c69afd9e6669058be5 ]

[Why & How]
Observe that we try to access DPCD 0x600h of disconnected DP ports.
In order not to wasting time on retrying these ports, call
dpcd_write_rx_power_ctrl() after checking its connection status.

Reviewed-by: Aurabindo Pillai 
Signed-off-by: Wayne Lin 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amd/display: Update DMCUB loading sequence for DCN3.5

2025-08-20T16:36:15+00:00

[ Upstream commit d42b2331e158fa6bcdc89e4c8c470dc5da20be1f ]

[Why]
New sequence from HW for reset and firmware reloading has been
provided that aims to stabilize the reload sequence in the case the
firmware is hung or has outstanding requests.

[How]
Update the sequence to remove the DMUIF reset and the redundant
writes in the release.

Reviewed-by: Ovidiu Bunea 
Signed-off-by: Nicholas Kazlauskas 
Signed-off-by: Wayne Lin 
Tested-by: Daniel Wheeler 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdgpu: clear pa and mca record counter when resetting eeprom

2025-08-20T16:36:12+00:00

[ Upstream commit d0cc8d2b7df1848f98f0fea8135ba706814b1d13 ]

clear pa and mca record counter when resetting eeprom, so that
ras_num_bad_pages can be calculated correctly

Signed-off-by: ganglxie 
Reviewed-by: Tao Zhou 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin

drm/amdgpu: Suspend IH during mode-2 reset

2025-08-20T16:36:12+00:00

[ Upstream commit 3f1e81ecb61923934bd11c3f5c1e10893574e607 ]

On multi-aid SOCs, there could be a continuous stream of interrupts from
GC after poison consumption. Suspend IH to disable them before doing
mode-2 reset. This avoids conflicts in hardware accesses during
interrupt handlers while a reset is ongoing.

Signed-off-by: Lijo Lazar 
Reviewed-by: Asad Kamal 
Signed-off-by: Alex Deucher 
Signed-off-by: Sasha Levin