[PATCH AUTOSEL 6.0 25/30] drm/amd/display: Investigate tool reported FCLK P-state deviations

From: Sasha Levin
Date: Thu Nov 10 2022 - 21:36:59 EST


From: Nevenko Stupar <Nevenko.Stupar@xxxxxxx>

[ Upstream commit 7461016c5706eb8c477752bf69e5c9f5a38f502b ]

[Why]
Fix for some of the tool reported modes for FCLK
P-state deviations and UCLK P-state deviations that
are coming from DSC terms and/or Scaling terms
causing MinActiveFCLKChangeLatencySupported
and MaxActiveDRAMClockChangeLatencySupported
incorrectly calculated in DML for these configurations.

Reviewed-by: Chaitanya Dhere <Chaitanya.Dhere@xxxxxxx>
Acked-by: Jasdeep Dhillon <jdhillon@xxxxxxx>
Acked-by: Alex Hung <alex.hung@xxxxxxx>
Signed-off-by: Nevenko Stupar <Nevenko.Stupar@xxxxxxx>
Tested-by: Mark Broadworth <mark.broadworth@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index 6704465fe5b6..ea80874474e3 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -364,7 +364,8 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
for (k = 0; k < mode_lib->vba.NumberOfActiveSurfaces; ++k) {
v->DSCDelay[k] = dml32_DSCDelayRequirement(mode_lib->vba.DSCEnabled[k],
mode_lib->vba.ODMCombineEnabled[k], mode_lib->vba.DSCInputBitPerComponent[k],
- mode_lib->vba.OutputBpp[k], mode_lib->vba.HActive[k], mode_lib->vba.HTotal[k],
+ mode_lib->vba.OutputBppPerState[mode_lib->vba.VoltageLevel][k],
+ mode_lib->vba.HActive[k], mode_lib->vba.HTotal[k],
mode_lib->vba.NumberOfDSCSlices[k], mode_lib->vba.OutputFormat[k],
mode_lib->vba.Output[k], mode_lib->vba.PixelClock[k],
mode_lib->vba.PixelClockBackEnd[k]);
--
2.35.1