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>

1 files changed, 227 insertions, 0 deletions

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 000000000000..ce4025591b87
--- /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