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| author | Ivan Lipski <ivan.lipski@amd.com> | 2026-05-28 12:28:51 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-06-17 18:10:31 -0400 |
| commit | 5cc0f35d83e2c72f70edaf7478db350af3082a17 (patch) | |
| tree | 6bff13703f3b8a26c4d6a68ae9c8d72832dee6b1 /tools/perf/scripts/python | |
| parent | fe7945d092a1d3c340febc2ab176cee50d0f6c80 (diff) | |
drm/amd/display: Restore periodic detection for DCN35
[Why&How]
Periodic detection callbacks from DCN35 was removed for higher IPS
residency causing some displays to fail to recover after DPMS sleep. The
monitors bounces HPD ~1.2s after link training, and without periodic
detection the system enters IPS with no mechanism to wake and rediscover
the display.
Restore the periodic detection calls in dcn35_clk_mgr for now. It should
be replaced with a proper IPS-aware solution long term using DMUB.
Also remove it from dcn31 and dcn314_clk_mgr.c since they do not have IPS,
thus should not affect them.
Fixes: 3f6c060846be ("drm/amd/display: Remove periodic detection callbacks from dcn35+")
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5318
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 0c300e6a76916e944b6b18a64c73f7895a0fee87)
Cc: stable@vger.kernel.org
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions