diff options
| author | Martin Leung <martin.leung@amd.com> | 2019-03-26 13:14:11 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-04-11 10:03:08 -0500 |
| commit | f4bbebf8e7eb4d294b040ab2d2ba71e70e69b930 (patch) | |
| tree | 1d0590f68ae8ef44b04ec4701c6e2c0297d1b3c3 /drivers/gpu/drm/amd/display/dc/dce/dce_aux.h | |
| parent | 543c364d8eeeb42c0edfaac9764f4e9f3d777ec1 (diff) | |
drm/amd/display: extending AUX SW Timeout
[Why]
AUX takes longer to reply when using active DP-DVI dongle on some asics
resulting in up to 2000+ us edid read (timeout).
[How]
1. Adjust AUX poll to match spec
2. Extend the SW timeout. This does not affect normal
operation since we exit the loop as soon as AUX acks.
Signed-off-by: Martin Leung <martin.leung@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Joshua Aberback <Joshua.Aberback@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_aux.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dce/dce_aux.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h index d27f22c05e4b..e28ed6a00ff4 100644 --- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h +++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.h @@ -71,11 +71,11 @@ enum { /* This is the timeout as defined in DP 1.2a, * at most within ~240usec. That means, * increasing this timeout will not affect normal operation, * and we'll timeout after - * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD = 1600usec. + * SW_AUX_TIMEOUT_PERIOD_MULTIPLIER * AUX_TIMEOUT_PERIOD = 2400usec. * This timeout is especially important for - * resume from S3 and CTS. + * converters, resume from S3, and CTS. */ - SW_AUX_TIMEOUT_PERIOD_MULTIPLIER = 4 + SW_AUX_TIMEOUT_PERIOD_MULTIPLIER = 6 }; struct dce_aux { |