From: Duncan Ma <[email protected]> [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 <[email protected]> Acked-by: Hamza Mahfooz <[email protected]> Signed-off-by: Duncan Ma <[email protected]> --- drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c index 54db2eca9e6b..1b02f0ebe957 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c +++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c @@ -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, -- 2.36.1
