From: Bing Guo bing.guo@amd.com
[ Upstream commit 06050a0f01dbac2ca33145ef19a72041206ea983 ]
Why: In DCN2x, HW doesn't automatically divide MASTER_UPDATE_LOCK_DB_X by the number of pipes ODM Combined.
How: Set MASTER_UPDATE_LOCK_DB_X to the value that is adjusted by the number of pipes ODM Combined.
Reviewed-by: Martin Leung martin.leung@amd.com Acked-by: Aurabindo Pillai aurabindo.pillai@amd.com Signed-off-by: Bing Guo bing.guo@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/dcn20/dcn20_optc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c index d8b18c515d06..e3cfb442a062 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c @@ -357,7 +357,7 @@ void optc2_lock_doublebuffer_enable(struct timing_generator *optc)
REG_UPDATE_2(OTG_GLOBAL_CONTROL1, MASTER_UPDATE_LOCK_DB_X, - h_blank_start - 200 - 1, + (h_blank_start - 200 - 1) / optc1->opp_count, MASTER_UPDATE_LOCK_DB_Y, v_blank_start - 1); }