5.10-stable review patch. If anyone has any objections, please let me know.
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From: Meenakshikumar Somasundaram meenakshikumar.somasundaram@amd.com
[ Upstream commit c4b8394e76adba4f50a3c2696c75b214a291e24a ]
[Why] When otg workaround is applied during clock update, otgs of tiled display went out of sync.
[How] To call dc_trigger_sync() after clock update to sync otgs again.
Reviewed-by: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Acked-by: Hamza Mahfooz hamza.mahfooz@amd.com Signed-off-by: Meenakshikumar Somasundaram meenakshikumar.somasundaram@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/amd/display/dc/core/dc.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 36a9e9c84ed4..272252cd0500 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -1440,6 +1440,10 @@ static enum dc_status dc_commit_state_no_check(struct dc *dc, struct dc_state *c wait_for_no_pipes_pending(dc, context); /* pplib is notified if disp_num changed */ dc->hwss.optimize_bandwidth(dc, context); + /* Need to do otg sync again as otg could be out of sync due to otg + * workaround applied during clock update + */ + dc_trigger_sync(dc, context); }
context->stream_mask = get_stream_mask(dc, context);