diff options
| author | David Galiffi <[email protected]> | 2020-06-11 17:36:14 -0400 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2020-07-01 01:59:26 -0400 |
| commit | 8582aea20bc5de1fc4f2029e6cde604b2c755c0a (patch) | |
| tree | 216e3834806481813dfd5286bd851dac3c4b3a87 | |
| parent | 0f782777f05ded1bb9694aed250bc74f25f0c91b (diff) | |
drm/amd/display: Compare v_front_porch when checking if streams are synchronizable
[Why]
If the front porch of the two timings differ, then there may not be
enough time while both streams are in vertical blank to perform a memory
clock change. This can hang the system.
[How]
Check the each streams timing.v_front_porch when determining if the two
streams are synchronizable.
Signed-off-by: David Galiffi <[email protected]>
Reviewed-by: Jun Lei <[email protected]>
Acked-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 3d0003c69373..1000dc6daf72 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -399,6 +399,10 @@ bool resource_are_streams_timing_synchronizable( != stream2->timing.v_addressable) return false; + if (stream1->timing.v_front_porch + != stream2->timing.v_front_porch) + return false; + if (stream1->timing.pix_clk_100hz != stream2->timing.pix_clk_100hz) return false; |