drm/amd/display: Add dcn42b_soc_bb to DML2

[Why & How]
Add bounding box for dcn42b

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Matthew Stewart <matthew.stewart2@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 (file)
index 0000000..ce40255
--- /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