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drm/amd/display: Reduce HPD Detection Interval for IPS

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[ Upstream commit a88b19b13fb41a3fa03ec67b5f57cc267fbfb160 ]

Fix DP Compliance test 4.2.1.3, 4.2.2.8, 4.3.1.12, 4.3.1.13
when IPS enabled.

Original HPD detection interval is set to 5s which violates DP
compliance.
Reduce the interval parameter, such that link training can be
finished within 5 seconds.

Fixes: afca033f10 ("drm/amd/display: Add periodic detection for IPS")
Reviewed-by: Roman Li <roman.li@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Fangzhi Zuo
2024-10-15 14:22:32 -04:00
committed by Greg Kroah-Hartman
parent 0f8d9ba375
commit 047e2eb614
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
+1 -1
View File
@@ -35,7 +35,7 @@
#include "amdgpu_dm_trace.h"
#include "amdgpu_dm_debugfs.h"
#define HPD_DETECTION_PERIOD_uS 5000000
#define HPD_DETECTION_PERIOD_uS 2000000
#define HPD_DETECTION_TIME_uS 100000
void amdgpu_dm_crtc_handle_vblank(struct amdgpu_crtc *acrtc)