From: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
[Why]
Prefetch BW calculated is lower than the DML reference because of a
porting error that's excluding cursor and row bandwidth from the
pixel data bandwidth.
[How]
Change the dml_max4 to dml_max3 and include cursor and row bandwidth
in the same calculation as the rest of the pixel data during vactive.
Reviewed-by: Dmytro Laktyushkin <dmytro.laktyush...@amd.com>
Acked-by: Agustin Gutierrez Sanchez <agustin.gutier...@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlaus...@amd.com>
---
.../gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
index ce55c9caf9a2..d58925cff420 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
@@ -5398,9 +5398,9 @@ void dml31_ModeSupportAndSystemConfigurationFull(struct
display_mode_lib *mode_l
v->MaximumReadBandwidthWithPrefetch =
v->MaximumReadBandwidthWithPrefetch
- +
dml_max4(
-
v->VActivePixelBandwidth[i][j][k],
-
v->VActiveCursorBandwidth[i][j][k]
+ +
dml_max3(
+
v->VActivePixelBandwidth[i][j][k]
+
+ v->VActiveCursorBandwidth[i][j][k]
+ v->NoOfDPP[i][j][k]
* (v->meta_row_bandwidth[i][j][k]
+
v->dpte_row_bandwidth[i][j][k]),
--
2.25.1
