From: Matthew Stewart Date: Mon, 18 May 2026 17:59:21 +0000 (-0400) Subject: drm/amd/display: Add dcn42b_soc_bb to DML2 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=eb778d928b7b619b7076ef73dcb06947c202947a;p=thirdparty%2Flinux.git drm/amd/display: Add dcn42b_soc_bb to DML2 [Why & How] Add bounding box for dcn42b Reviewed-by: Harry Wentland Signed-off-by: Matthew Stewart Signed-off-by: Ray Wu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/inc/bounding_boxes/dcn42b_soc_bb.h b/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/inc/bounding_boxes/dcn42b_soc_bb.h new file mode 100644 index 0000000000000..ce4025591b876 --- /dev/null +++ b/drivers/gpu/drm/amd/display/dc/dml2_0/dml21/inc/bounding_boxes/dcn42b_soc_bb.h @@ -0,0 +1,227 @@ +// SPDX-License-Identifier: MIT +// +// Copyright 2026 Advanced Micro Devices, Inc. + +#ifndef __DML_DML_DCN42B_SOC_BB__ +#define __DML_DML_DCN42B_SOC_BB__ + +#include "dml_top_soc_parameter_types.h" + +/* DCN42B Bounding Box values */ +static const struct dml2_soc_qos_parameters dml_dcn42b_variant_a_soc_qos_params = { + .derate_table = { + .system_active_urgent = { + .dram_derate_percent_pixel = 65, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 60, + .fclk_derate_percent = 80, + .dcfclk_derate_percent = 80, + }, + .system_active_average = { + .dram_derate_percent_pixel = 30, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 30, + .fclk_derate_percent = 60, + .dcfclk_derate_percent = 60, + }, + .dcn_mall_prefetch_urgent = { + .dram_derate_percent_pixel = 65, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 60, + .fclk_derate_percent = 80, + .dcfclk_derate_percent = 80, + }, + .dcn_mall_prefetch_average = { + .dram_derate_percent_pixel = 30, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 30, + .fclk_derate_percent = 60, + .dcfclk_derate_percent = 60, + }, + .system_idle_average = { + .dram_derate_percent_pixel = 30, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 30, + .fclk_derate_percent = 60, + .dcfclk_derate_percent = 60, + }, + }, + .writeback = { + .base_latency_us = 12, + .scaling_factor_us = 0, + .scaling_factor_mhz = 0, + }, + .qos_params = { + .dcn32x = { + .loaded_round_trip_latency_fclk_cycles = 106, + .urgent_latency_us = { + .base_latency_us = 4, + .base_latency_pixel_vm_us = 4, + .base_latency_vm_us = 4, + .scaling_factor_fclk_us = 0, + .scaling_factor_mhz = 0, + }, + .urgent_out_of_order_return_per_channel_pixel_and_vm_bytes = 4096, + .urgent_out_of_order_return_per_channel_pixel_only_bytes = 4096, + .urgent_out_of_order_return_per_channel_vm_only_bytes = 4096, + }, + }, + .qos_type = dml2_qos_param_type_dcn3, +}; + +static const struct dml2_soc_bb dml2_socbb_dcn42b = { + .clk_table = { + .wck_ratio = { + .clk_values_khz = {2}, + }, + .uclk = { + .clk_values_khz = {400000}, + .num_clk_values = 1, + }, + .fclk = { + .clk_values_khz = {1600000}, + .num_clk_values = 1, + }, + .dcfclk = { + .clk_values_khz = {800000}, + .num_clk_values = 1, + }, + .dispclk = { + .clk_values_khz = {1200000}, + .num_clk_values = 1, + }, + .dppclk = { + .clk_values_khz = {1200000}, + .num_clk_values = 1, + }, + .dtbclk = { + .clk_values_khz = {0}, + .num_clk_values = 0, + }, + .phyclk = { + .clk_values_khz = {810000}, + .num_clk_values = 1, + }, + .socclk = { + .clk_values_khz = {1600000}, + .num_clk_values = 1, + }, + .dscclk = { + .clk_values_khz = {400000}, + .num_clk_values = 1, + }, + .phyclk_d18 = { + .clk_values_khz = {667000}, + .num_clk_values = 1, + }, + .phyclk_d32 = { + .clk_values_khz = {625000}, + .num_clk_values = 1, + }, + .dram_config = { + .channel_width_bytes = 4, + .channel_count = 4, + .alt_clock_bw_conversion = true, + }, + }, + + .qos_parameters = { + .derate_table = { + .system_active_urgent = { + .dram_derate_percent_pixel = 65, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 60, + .fclk_derate_percent = 80, + .dcfclk_derate_percent = 80, + }, + .system_active_average = { + .dram_derate_percent_pixel = 30, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 30, + .fclk_derate_percent = 60, + .dcfclk_derate_percent = 60, + }, + .dcn_mall_prefetch_urgent = { + .dram_derate_percent_pixel = 65, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 60, + .fclk_derate_percent = 80, + .dcfclk_derate_percent = 80, + }, + .dcn_mall_prefetch_average = { + .dram_derate_percent_pixel = 30, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 30, + .fclk_derate_percent = 60, + .dcfclk_derate_percent = 60, + }, + .system_idle_average = { + .dram_derate_percent_pixel = 30, + .dram_derate_percent_vm = 30, + .dram_derate_percent_pixel_and_vm = 30, + .fclk_derate_percent = 60, + .dcfclk_derate_percent = 60, + }, + }, + .writeback = { + .base_latency_us = 12, + .scaling_factor_us = 0, + .scaling_factor_mhz = 0, + }, + .qos_params = { + .dcn32x = { + .loaded_round_trip_latency_fclk_cycles = 106, + .urgent_latency_us = { + .base_latency_us = 4, + .base_latency_pixel_vm_us = 4, + .base_latency_vm_us = 4, + .scaling_factor_fclk_us = 0, + .scaling_factor_mhz = 0, + }, + .urgent_out_of_order_return_per_channel_pixel_and_vm_bytes = 4096, + .urgent_out_of_order_return_per_channel_pixel_only_bytes = 4096, + .urgent_out_of_order_return_per_channel_vm_only_bytes = 4096, + }, + }, + .qos_type = dml2_qos_param_type_dcn3, + }, + + /* Reuse of DCN42 params for LPDDR5/LPCAMM2 */ + .power_management_parameters = { + .dram_clk_change_blackout_us = 36, + .fclk_change_blackout_us = 0, + .g7_ppt_blackout_us = 0, + .stutter_enter_plus_exit_latency_us = 14, + .stutter_exit_latency_us = 12, + .z8_stutter_enter_plus_exit_latency_us = 300, + .z8_stutter_exit_latency_us = 200, + }, + + .vmin_limit = { + .dispclk_khz = 632 * 1000, + }, + + .dprefclk_mhz = 600, + .xtalclk_mhz = 24, + .pcie_refclk_mhz = 100, + .dchub_refclk_mhz = 50, + .mall_allocated_for_dcn_mbytes = 64, + .max_outstanding_reqs = 256, + .fabric_datapath_to_dcn_data_return_bytes = 32, + .return_bus_width_bytes = 64, + .hostvm_min_page_size_kbytes = 4, + .gpuvm_min_page_size_kbytes = 256, + .gpuvm_max_page_table_levels = 1, + .hostvm_max_non_cached_page_table_levels = 2, + .phy_downspread_percent = 0.38, + .dcn_downspread_percent = 0.38, + .dispclk_dppclk_vco_speed_mhz = 3000, + .do_urgent_latency_adjustment = 0, + .mem_word_bytes = 0, + .num_dcc_mcaches = 0, + .mcache_size_bytes = 0, + .mcache_line_size_bytes = 0, + .max_fclk_for_uclk_dpm_khz = 2200 * 1000, +}; + +#endif