6.11-stable review patch. If anyone has any objections, please let me know.
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From: Fangzhi Zuo Jerry.Zuo@amd.com
[ 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 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 --- 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 4593c158cc156..5ca9cdbac3d72 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)