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drm/amd/display: Correct min comp buffer size

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[Why]
In 3-way mpo pipes, there is a case that we
overbook the CRB buffer size. At rare instances,
overbooking the crb will cause underflow. This only
happens when det_size changes dynamically
based on pipe_cnt.

[How]
Set min compbuff size to 1 segment when preparing BW.

Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Duncan Ma <duncan.ma@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Duncan Ma 2022-05-17 17:50:23 -04:00 committed by Alex Deucher
parent 2d017189e2
commit 0c56705d8a
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c
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@ -201,7 +201,7 @@ struct _vcs_dpi_ip_params_st dcn3_15_ip = {
.hostvm_max_page_table_levels = 2,
.rob_buffer_size_kbytes = 64,
.det_buffer_size_kbytes = DCN3_15_DEFAULT_DET_SIZE,
.min_comp_buffer_size_kbytes = DCN3_15_MIN_COMPBUF_SIZE_KB,
.min_comp_buffer_size_kbytes = 64,
.config_return_buffer_size_in_kbytes = 1024,
.compressed_buffer_segment_size_in_kbytes = 64,
.meta_fifo_size_in_kentries = 32,
@ -297,6 +297,7 @@ struct _vcs_dpi_ip_params_st dcn3_16_ip = {
.hostvm_max_page_table_levels = 2,
.rob_buffer_size_kbytes = 64,
.det_buffer_size_kbytes = DCN3_16_DEFAULT_DET_SIZE,
.min_comp_buffer_size_kbytes = 64,
.config_return_buffer_size_in_kbytes = 1024,
.compressed_buffer_segment_size_in_kbytes = 64,
.meta_fifo_size_in_kentries = 32,