Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH 5.10 32/98] drm/amd/display: Fix Dynamic bpp issue with 8K30 with Navi 1X | Date | Tue, 24 Aug 2021 12:58:02 -0400 |
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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); } -- 2.30.2
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