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Code Issues Releases Wiki Activity

drm/amd/display: Change default Z8 watermark values 

[ Upstream commit 8f586cc16c ]

[Why & How]
Previous Z8 watermark values were causing flickering and OTC underflow.
Updating Z8 watermark values based on the measurement.

Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: Leo Chen <sancchen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Leo Chen 2023-04-13 17:34:24 -04:00 committed by Greg Kroah-Hartman
parent 8aca7a35dd
commit 266d64fbde
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/dml/dcn314/dcn314_fpu.c
View File

@ -149,8 +149,8 @@ struct _vcs_dpi_soc_bounding_box_st dcn3_14_soc = {
.num_states = 5,
.sr_exit_time_us = 16.5,
.sr_enter_plus_exit_time_us = 18.5,
.sr_exit_z8_time_us = 210.0,
.sr_enter_plus_exit_z8_time_us = 310.0,
.sr_exit_z8_time_us = 268.0,
.sr_enter_plus_exit_z8_time_us = 393.0,
.writeback_latency_us = 12.0,
.dram_channel_width_bytes = 4,
.round_trip_ping_latency_dcfclk_cycles = 106,