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drm/amd/display: change SMU repsonse timeout to 2s.

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[Why]
there is some garbage showing up during reboot test.
Reason:
SMU might handle display driver msg defered and driver will send
next msg to SMU after 10ms timeout, once SMU FW handle previous msg,
parameters are changed to next one, which result in a wrong value be programmed.

[How]
Extend timeout to 2s so SMU will have enough time to handle driver msg.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Bindu Ramamurthy <bindu.r@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yongqiang Sun 2020-12-09 16:56:51 -05:00 committed by Alex Deucher
parent e8e91f9395
commit cf7fc75523
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr_vbios_smu.c
View file

@ -99,7 +99,7 @@ int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, unsigned
/* Trigger the message transaction by writing the message ID */
REG_WRITE(MP1_SMN_C2PMSG_67, msg_id);
result = rn_smu_wait_for_response(clk_mgr, 10, 1000);
result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
ASSERT(result == VBIOSSMC_Result_OK || result == VBIOSSMC_Result_UnknownCmd);