diff options
| author | Wesley Chalmers <Wesley.Chalmers@amd.com> | 2020-09-10 00:41:53 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-09-22 19:28:06 +0300 |
| commit | 37b7cb10f07c1174522faafc1d51c6591b1501d4 (patch) | |
| tree | cc1ba32d06db4bddc6e41f1ba0d40b6b52eb14a2 | |
| parent | 25b315817216eaac93ca880d736b359ababae61a (diff) | |
| download | linux-37b7cb10f07c1174522faafc1d51c6591b1501d4.tar.xz | |
drm/amd/display: Increase timeout for DP Disable
[WHY]
When disabling DP video, the current REG_WAIT timeout
of 50ms is too low for certain cases with very high
VSYNC intervals.
[HOW]
Increase the timeout to 102ms, so that
refresh rates as low as 10Hz can be handled properly.
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: <stable@vger.kernel.org>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c index 9cf139be3f40..f70fcadf1ee5 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_stream_encoder.c @@ -896,10 +896,10 @@ void enc1_stream_encoder_dp_blank( */ REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_DIS_DEFER, 2); /* Larger delay to wait until VBLANK - use max retry of - * 10us*5000=50ms. This covers 41.7ms of minimum 24 Hz mode + + * 10us*10200=102ms. This covers 100.0ms of minimum 10 Hz mode + * a little more because we may not trust delay accuracy. */ - max_retries = DP_BLANK_MAX_RETRY * 250; + max_retries = DP_BLANK_MAX_RETRY * 501; /* disable DP stream */ REG_UPDATE(DP_VID_STREAM_CNTL, DP_VID_STREAM_ENABLE, 0); |