diff options
| author | Wesley Chalmers <Wesley.Chalmers@amd.com> | 2021-03-29 13:27:47 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-06-15 17:25:41 -0400 |
| commit | 1d5b15f77e3567d2497dad69c99a307dd6379c8f (patch) | |
| tree | 89d1282a122cb23b27e58216f5bb5a2d557370c5 /drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | |
| parent | d307ce4b6c8fdc0fecf9f316d87c7f82fc82d83e (diff) | |
drm/amd/display: 7 retries + 50 ms timeout on AUX DEFER
[WHY]
DP 2.0 SCR specifies that TX devices must retry at least 7 times when
receiving an AUX DEFER reply from RX. In addition, the specification
states that the TX shall not retry indefinitely, and gives a suggestive
timeout interval of 50ms.
[HOW]
Keep retrying until both 7 or more retries have been made, and the 50ms
interval has passed.
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c')
0 files changed, 0 insertions, 0 deletions