From 047e2eb614cd9ca5f4c51f447e53a7ba1d6b01db Mon Sep 17 00:00:00 2001 From: Fangzhi Zuo Date: Tue, 15 Oct 2024 14:22:32 -0400 Subject: [PATCH] drm/amd/display: Reduce HPD Detection Interval for IPS [ 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: afca033f10d3 ("drm/amd/display: Add periodic detection for IPS") Reviewed-by: Roman Li Signed-off-by: Fangzhi Zuo Signed-off-by: Tom Chung Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c index 8780d4737680..9be87b532517 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c @@ -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)