drm/amd/display: Increase EDID read retries

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[WHY]
When monitor is still booting EDID read can fail while DPCD read
is successful.  In this case no EDID data will be returned, and this
could happen for a while.

[HOW]
Increase number of attempts to read EDID in dm_helpers_read_local_edid()
to 25.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4672
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit a76d6f2c76)
Cc: stable@vger.kernel.org

...

This commit is contained in:

Mario Limonciello (AMD) 2025-11-05 23:04:54 -06:00 • committed by Alex Deucher

parent 81f4d4ba50

commit 8ea9023617

1 changed files with 4 additions and 4 deletions

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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c

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