[PATCH 13/24] Revert "drm/amd/display: Enable urgent latency adjustments for DCN35"

Tom Chung chiahsuan.chung at amd.com
Tue Jan 7 15:28:44 UTC 2025


From: Nicholas Susanto <Nicholas.Susanto at amd.com>

Revert commit 284f141f5ce5 ("drm/amd/display: Enable urgent latency adjustments for DCN35")

[Why & How]

Urgent latency increase caused  2.8K OLED monitor caused it to
block this panel support P0.

Reverting this change does not reintroduce the netflix corruption issue
which it fixed.

Reviewed-by: Charlene Liu <charlene.liu at amd.com>
Signed-off-by: Nicholas Susanto <Nicholas.Susanto at amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c
index beed7adbbd43..47d785204f29 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c
@@ -195,9 +195,9 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_5_soc = {
 	.dcn_downspread_percent = 0.5,
 	.gpuvm_min_page_size_bytes = 4096,
 	.hostvm_min_page_size_bytes = 4096,
-	.do_urgent_latency_adjustment = 1,
+	.do_urgent_latency_adjustment = 0,
 	.urgent_latency_adjustment_fabric_clock_component_us = 0,
-	.urgent_latency_adjustment_fabric_clock_reference_mhz = 3000,
+	.urgent_latency_adjustment_fabric_clock_reference_mhz = 0,
 };
 
 void dcn35_build_wm_range_table_fpu(struct clk_mgr *clk_mgr)
-- 
2.34.1



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