From: Nicholas Susanto Date: Wed, 24 Apr 2024 17:34:11 +0000 (-0400) Subject: drm/amd/display: Enable urgent latency adjustments for DCN35 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=284f141f5ce5f416c336e1539eb3a6d74c51fe6e;p=linux.git drm/amd/display: Enable urgent latency adjustments for DCN35 [Why] Underflow occurs when running Netflix in a 4k144 eDP + 4k60 HDMI FRL setup. It is caused by latency varying based on the DCFCLK/FCLK state. [How] Enable urgent latency adjustment and match the reference to existing ASIC that also see increased latency at low FCLK. Reviewed-by: Nicholas Kazlauskas Acked-by: Tom Chung Signed-off-by: Nicholas Susanto Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- 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 21e0eef3269b..53e40d3c48d4 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 = 0, + .do_urgent_latency_adjustment = 1, .urgent_latency_adjustment_fabric_clock_component_us = 0, - .urgent_latency_adjustment_fabric_clock_reference_mhz = 0, + .urgent_latency_adjustment_fabric_clock_reference_mhz = 3000, }; void dcn35_build_wm_range_table_fpu(struct clk_mgr *clk_mgr)