drm/amd/pm: add 5s custom timeout for unload messages

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The default SMU message timeout may be too short for the
PrepareMp1ForUnload message on smu_v15_0_8, leading to spurious
-ETIME errors under load or slow firmware response conditions.

Introduce SMU_V15_0_8_MSG_TIMEOUT_US (5 seconds) and apply it to:
  - smu_v15_0_8_notify_unload(): switch from smu_cmn_send_smc_msg()
    to smu_cmn_send_smc_msg_with_params_ext() to pass the explicit
    timeout.
v2: Use c2pmsgctl and args directly (Lijo)

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Asad Kamal 2026-06-30 21:37:11 +08:00 • committed by Alex Deucher

parent 90580da8ce

commit 93eca5a03b

1 changed files with 10 additions and 1 deletions

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drivers/gpu/drm/amd/pm/swsmu/smu15/smu_v15_0_8_ppt.c

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