// SPDX-License-Identifier: GPL-2.0-only /* * Tegra124 DFLL FCPU clock source driver * * Copyright (C) 2012-2019 NVIDIA Corporation. All rights reserved. * * Aleksandr Frid * Paul Walmsley */ #include #include #include #include #include #include #include #include #include "clk.h" #include "clk-dfll.h" #include "cvb.h" struct dfll_fcpu_data { const unsigned long *cpu_max_freq_table; unsigned int cpu_max_freq_table_size; const struct cvb_table *cpu_cvb_tables; unsigned int cpu_cvb_tables_size; }; /* Maximum CPU frequency, indexed by CPU speedo id */ static const unsigned long tegra124_cpu_max_freq_table[] = { [0] = 2014500000UL, [1] = 2320500000UL, [2] = 2116500000UL, [3] = 2524500000UL, }; static const struct cvb_table tegra124_cpu_cvb_tables[] = { { .speedo_id = -1, .process_id = -1, .min_millivolts = 900, .max_millivolts = 1260, .speedo_scale = 100, .voltage_scale = 1000, .entries = { { 204000000UL, { 1112619, -29295, 402 } }, { 306000000UL, { 1150460, -30585, 402 } }, { 408000000UL, { 1190122, -31865, 402 } }, { 510000000UL, { 1231606, -33155, 402 } }, { 612000000UL, { 1274912, -34435, 402 } }, { 714000000UL, { 1320040, -35725, 402 } }, { 816000000UL, { 1366990, -37005, 402 } }, { 918000000UL, { 1415762, -38295, 402 } }, { 1020000000UL, { 1466355, -39575, 402 } }, { 1122000000UL, { 1518771, -40865, 402 } }, { 1224000000UL, { 1573009, -42145, 402 } }, { 1326000000UL, { 1629068, -43435, 402 } }, { 1428000000UL, { 1686950, -44715, 402 } }, { 1530000000UL, { 1746653, -46005, 402 } }, { 1632000000UL, { 1808179, -47285, 402 } }, { 1734000000UL, { 1871526, -48575, 402 } }, { 1836000000UL, { 1936696, -49855, 402 } }, { 1938000000UL, { 2003687, -51145, 402 } }, { 2014500000UL, { 2054787, -52095, 402 } }, { 2116500000UL, { 2124957, -53385, 402 } }, { 2218500000UL, { 2196950, -54665, 402 } }, { 2320500000UL, { 2270765, -55955, 402 } }, { 2422500000UL, { 2346401, -57235, 402 } }, { 2524500000UL, { 2437299, -58535, 402 } }, { 0UL, { 0, 0, 0 } }, }, .cpu_dfll_data = { .tune0_low = 0x005020ff, .tune0_high = 0x005040ff, .tune1 = 0x00000060, } }, }; static const unsigned long tegra210_cpu_max_freq_table[] = { [0] = 1912500000UL, [1] = 1912500000UL, [2] = 2218500000UL, [3] = 1785000000UL, [4] = 1632000000UL, [5] = 1912500000UL, [6] = 2014500000UL, [7] = 1734000000UL, [8] = 1683000000UL, [9] = 1555500000UL, [10] = 1504500000UL, }; #define CPU_CVB_TABLE \ .speedo_scale = 100, \ .voltage_scale = 1000, \ .entries = { \ { 204000000UL, { 1007452, -23865, 370 } }, \ { 306000000UL, { 1052709, -24875, 370 } }, \ { 408000000UL, { 1099069, -25895, 370 } }, \ { 510000000UL, { 1146534, -26905, 370 } }, \ { 612000000UL, { 1195102, -27915, 370 } }, \ { 714000000UL, { 1244773, -28925, 370 } }, \ { 816000000UL, { 1295549, -29935, 370 } }, \ { 918000000UL, { 1347428, -30955, 370 } }, \ { 1020000000UL, { 1400411, -31965, 370 } }, \ { 1122000000UL, { 1454497, -32975, 370 } }, \ { 1224000000UL, { 1509687, -33985, 370 } }, \ { 1326000000UL, { 1565981, -35005, 370 } }, \ { 1428000000UL, { 1623379, -36015, 370 } }, \ { 1530000000UL, { 1681880, -37025, 370 } }, \ { 1632000000UL, { 1741485, -38035, 370 } }, \ { 1734000000UL, { 1802194, -39055, 370 } }, \ { 1836000000UL, { 1864006, -40065, 370 } }, \ { 1912500000UL, { 1910780, -40815, 370 } }, \ { 2014500000UL, { 1227000, 0, 0 } }, \ { 2218500000UL, { 1227000, 0, 0 } }, \ { 0UL, { 0, 0, 0 } }, \ } #define CPU_CVB_TABLE_XA \ .speedo_scale = 100, \ .voltage_scale = 1000, \ .entries = { \ { 204000000UL, { 1250024, -39785, 565 } }, \ { 306000000UL, { 1297556, -41145, 565 } }, \ { 408000000UL, { 1346718, -42505, 565 } }, \ { 510000000UL, { 1397511, -43855, 565 } }, \ { 612000000UL, { 1449933, -45215, 565 } }, \ { 714000000UL, { 1503986, -46575, 565 } }, \ { 816000000UL, { 1559669, -47935, 565 } }, \ { 918000000UL, { 1616982, -49295, 565 } }, \ { 1020000000UL, { 1675926, -50645, 565 } }, \ { 1122000000UL, { 1736500, -52005, 565 } }, \ { 1224000000UL, { 1798704, -53365, 565 } }, \ { 1326000000UL, { 1862538, -54725, 565 } }, \ { 1428000000UL, { 1928003, -56085, 565 } }, \ { 1530000000UL, { 1995097, -57435, 565 } }, \ { 1606500000UL, { 2046149, -58445, 565 } }, \ { 1632000000UL, { 2063822, -58795, 565 } }, \ { 0UL, { 0, 0, 0 } }, \ } #define CPU_CVB_TABLE_EUCM1 \ .speedo_scale = 100, \ .voltage_scale = 1000, \ .entries = { \ { 204000000UL, { 734429, 0, 0 } }, \ { 306000000UL, { 768191, 0, 0 } }, \ { 408000000UL, { 801953, 0, 0 } }, \ { 510000000UL, { 835715, 0, 0 } }, \ { 612000000UL, { 869477, 0, 0 } }, \ { 714000000UL, { 903239, 0, 0 } }, \ { 816000000UL, { 937001, 0, 0 } }, \ { 918000000UL, { 970763, 0, 0 } }, \ { 1020000000UL, { 1004525, 0, 0 } }, \ { 1122000000UL, { 1038287, 0, 0 } }, \ { 1224000000UL, { 1072049, 0, 0 } }, \ { 1326000000UL, { 1105811, 0, 0 } }, \ { 1428000000UL, { 1130000, 0, 0 } }, \ { 1555500000UL, { 1130000, 0, 0 } }, \ { 1632000000UL, { 1170000, 0, 0 } }, \ { 1734000000UL, { 1227500, 0, 0 } }, \ { 0UL, { 0, 0, 0 } }, \ } #define CPU_CVB_TABLE_EUCM2 \ .speedo_scale = 100, \ .voltage_scale = 1000, \ .entries = { \ { 204000000UL, { 742283, 0, 0 } }, \ { 306000000UL, { 776249, 0, 0 } }, \ { 408000000UL, { 810215, 0, 0 } }, \ { 510000000UL, { 844181, 0, 0 } }, \ { 612000000UL, { 878147, 0, 0 } }, \ { 714000000UL, { 912113, 0, 0 } }, \ { 816000000UL, { 946079, 0, 0 } }, \ { 918000000UL, { 980045, 0, 0 } }, \ { 1020000000UL, { 1014011, 0, 0 } }, \ { 1122000000UL, { 1047977, 0, 0 } }, \ { 1224000000UL, { 1081943, 0, 0 } }, \ { 1326000000UL, { 1090000, 0, 0 } }, \ { 1479000000UL, { 1090000, 0, 0 } }, \ { 1555500000UL, { 1162000, 0, 0 } }, \ { 1683000000UL, { 1195000, 0, 0 } }, \ { 0UL, { 0, 0, 0 } }, \ } #define CPU_CVB_TABLE_EUCM2_JOINT_RAIL \ .speedo_scale = 100, \ .voltage_scale = 1000, \ .entries = { \ { 204000000UL, { 742283, 0, 0 } }, \ { 306000000UL, { 776249, 0, 0 } }, \ { 408000000UL, { 810215, 0, 0 } }, \ { 510000000UL, { 844181, 0, 0 } }, \ { 612000000UL, { 878147, 0, 0 } }, \ { 714000000UL, { 912113, 0, 0 } }, \ { 816000000UL, { 946079, 0, 0 } }, \ { 918000000UL, { 980045, 0, 0 } }, \ { 1020000000UL, { 1014011, 0, 0 } }, \ { 1122000000UL, { 1047977, 0, 0 } }, \ { 1224000000UL, { 1081943, 0, 0 } }, \ { 1326000000UL, { 1090000, 0, 0 } }, \ { 1479000000UL, { 1090000, 0, 0 } }, \ { 1504500000UL, { 1120000, 0, 0 } }, \ { 0UL, { 0, 0, 0 } }, \ } #define CPU_CVB_TABLE_ODN \ .speedo_scale = 100, \ .voltage_scale = 1000, \ .entries = { \ { 204000000UL, { 721094, 0, 0 } }, \ { 306000000UL, { 754040, 0, 0 } }, \ { 408000000UL, { 786986, 0, 0 } }, \ { 510000000UL, { 819932, 0, 0 } }, \ { 612000000UL, { 852878, 0, 0 } }, \ { 714000000UL, { 885824, 0, 0 } }, \ { 816000000UL, { 918770, 0, 0 } }, \ { 918000000UL, { 915716, 0, 0 } }, \ { 1020000000UL, { 984662, 0, 0 } }, \ { 1122000000UL, { 1017608, 0, 0 } }, \ { 1224000000UL, { 1050554, 0, 0 } }, \ { 1326000000UL, { 1083500, 0, 0 } }, \ { 1428000000UL, { 1116446, 0, 0 } }, \ { 1581000000UL, { 1130000, 0, 0 } }, \ { 1683000000UL, { 1168000, 0, 0 } }, \ { 1785000000UL, { 1227500, 0, 0 } }, \ { 0UL, { 0, 0, 0 } }, \ } static struct cvb_table tegra210_cpu_cvb_tables[] = { { .speedo_id = 10, .process_id = 0, .min_millivolts = 840, .max_millivolts = 1120, CPU_CVB_TABLE_EUCM2_JOINT_RAIL, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 10, .process_id = 1, .min_millivolts = 840, .max_millivolts = 1120, CPU_CVB_TABLE_EUCM2_JOINT_RAIL, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 9, .process_id = 0, .min_millivolts = 900, .max_millivolts = 1162, CPU_CVB_TABLE_EUCM2, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, } }, { .speedo_id = 9, .process_id = 1, .min_millivolts = 900, .max_millivolts = 1162, CPU_CVB_TABLE_EUCM2, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, } }, { .speedo_id = 8, .process_id = 0, .min_millivolts = 900, .max_millivolts = 1195, CPU_CVB_TABLE_EUCM2, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, } }, { .speedo_id = 8, .process_id = 1, .min_millivolts = 900, .max_millivolts = 1195, CPU_CVB_TABLE_EUCM2, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, } }, { .speedo_id = 7, .process_id = 0, .min_millivolts = 841, .max_millivolts = 1227, CPU_CVB_TABLE_EUCM1, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 7, .process_id = 1, .min_millivolts = 841, .max_millivolts = 1227, CPU_CVB_TABLE_EUCM1, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 6, .process_id = 0, .min_millivolts = 870, .max_millivolts = 1150, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune1 = 0x20091d9, } }, { .speedo_id = 6, .process_id = 1, .min_millivolts = 870, .max_millivolts = 1150, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune1 = 0x25501d0, } }, { .speedo_id = 5, .process_id = 0, .min_millivolts = 818, .max_millivolts = 1227, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 5, .process_id = 1, .min_millivolts = 818, .max_millivolts = 1227, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x25501d0, .tune_high_min_millivolts = 864, } }, { .speedo_id = 4, .process_id = -1, .min_millivolts = 918, .max_millivolts = 1113, CPU_CVB_TABLE_XA, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune1 = 0x17711BD, } }, { .speedo_id = 3, .process_id = 0, .min_millivolts = 825, .max_millivolts = 1227, CPU_CVB_TABLE_ODN, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 3, .process_id = 1, .min_millivolts = 825, .max_millivolts = 1227, CPU_CVB_TABLE_ODN, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x25501d0, .tune_high_min_millivolts = 864, } }, { .speedo_id = 2, .process_id = 0, .min_millivolts = 870, .max_millivolts = 1227, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune1 = 0x20091d9, } }, { .speedo_id = 2, .process_id = 1, .min_millivolts = 870, .max_millivolts = 1227, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune1 = 0x25501d0, } }, { .speedo_id = 1, .process_id = 0, .min_millivolts = 837, .max_millivolts = 1227, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 1, .process_id = 1, .min_millivolts = 837, .max_millivolts = 1227, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x25501d0, .tune_high_min_millivolts = 864, } }, { .speedo_id = 0, .process_id = 0, .min_millivolts = 850, .max_millivolts = 1170, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x20091d9, .tune_high_min_millivolts = 864, } }, { .speedo_id = 0, .process_id = 1, .min_millivolts = 850, .max_millivolts = 1170, CPU_CVB_TABLE, .cpu_dfll_data = { .tune0_low = 0xffead0ff, .tune0_high = 0xffead0ff, .tune1 = 0x25501d0, .tune_high_min_millivolts = 864, } }, }; static const struct dfll_fcpu_data tegra124_dfll_fcpu_data = { .cpu_max_freq_table = tegra124_cpu_max_freq_table, .cpu_max_freq_table_size = ARRAY_SIZE(tegra124_cpu_max_freq_table), .cpu_cvb_tables = tegra124_cpu_cvb_tables, .cpu_cvb_tables_size = ARRAY_SIZE(tegra124_cpu_cvb_tables) }; static const struct dfll_fcpu_data tegra210_dfll_fcpu_data = { .cpu_max_freq_table = tegra210_cpu_max_freq_table, .cpu_max_freq_table_size = ARRAY_SIZE(tegra210_cpu_max_freq_table), .cpu_cvb_tables = tegra210_cpu_cvb_tables, .cpu_cvb_tables_size = ARRAY_SIZE(tegra210_cpu_cvb_tables), }; static const struct of_device_id tegra124_dfll_fcpu_of_match[] = { { .compatible = "nvidia,tegra124-dfll", .data = &tegra124_dfll_fcpu_data, }, { .compatible = "nvidia,tegra210-dfll", .data = &tegra210_dfll_fcpu_data }, { }, }; static void get_alignment_from_dt(struct device *dev, struct rail_alignment *align) { if (of_property_read_u32(dev->of_node, "nvidia,pwm-voltage-step-microvolts", &align->step_uv)) align->step_uv = 0; if (of_property_read_u32(dev->of_node, "nvidia,pwm-min-microvolts", &align->offset_uv)) align->offset_uv = 0; } static int get_alignment_from_regulator(struct device *dev, struct rail_alignment *align) { struct regulator *reg = regulator_get(dev, "vdd-cpu"); if (IS_ERR(reg)) return PTR_ERR(reg); align->offset_uv = regulator_list_voltage(reg, 0); align->step_uv = regulator_get_linear_step(reg); regulator_put(reg); return 0; } static int tegra124_dfll_fcpu_probe(struct platform_device *pdev) { int process_id, speedo_id, speedo_value, err; struct tegra_dfll_soc_data *soc; const struct dfll_fcpu_data *fcpu_data; struct rail_alignment align; fcpu_data = of_device_get_match_data(&pdev->dev); if (!fcpu_data) return -ENODEV; process_id = tegra_sku_info.cpu_process_id; speedo_id = tegra_sku_info.cpu_speedo_id; speedo_value = tegra_sku_info.cpu_speedo_value; if (speedo_id >= fcpu_data->cpu_max_freq_table_size) { dev_err(&pdev->dev, "unknown max CPU freq for speedo_id=%d\n", speedo_id); return -ENODEV; } soc = devm_kzalloc(&pdev->dev, sizeof(*soc), GFP_KERNEL); if (!soc) return -ENOMEM; soc->dev = get_cpu_device(0); if (!soc->dev) { dev_err(&pdev->dev, "no CPU0 device\n"); return -ENODEV; } if (of_property_read_bool(pdev->dev.of_node, "nvidia,pwm-to-pmic")) { get_alignment_from_dt(&pdev->dev, &align); } else { err = get_alignment_from_regulator(&pdev->dev, &align); if (err) return err; } soc->max_freq = fcpu_data->cpu_max_freq_table[speedo_id]; soc->cvb = tegra_cvb_add_opp_table(soc->dev, fcpu_data->cpu_cvb_tables, fcpu_data->cpu_cvb_tables_size, &align, process_id, speedo_id, speedo_value, soc->max_freq); soc->alignment = align; if (IS_ERR(soc->cvb)) { dev_err(&pdev->dev, "couldn't add OPP table: %ld\n", PTR_ERR(soc->cvb)); return PTR_ERR(soc->cvb); } err = tegra_dfll_register(pdev, soc); if (err < 0) { tegra_cvb_remove_opp_table(soc->dev, soc->cvb, soc->max_freq); return err; } return 0; } static void tegra124_dfll_fcpu_remove(struct platform_device *pdev) { struct tegra_dfll_soc_data *soc; /* * Note that exiting early here is dangerous as after this function * returns *soc is freed. */ soc = tegra_dfll_unregister(pdev); if (IS_ERR(soc)) return; tegra_cvb_remove_opp_table(soc->dev, soc->cvb, soc->max_freq); } static const struct dev_pm_ops tegra124_dfll_pm_ops = { SET_RUNTIME_PM_OPS(tegra_dfll_runtime_suspend, tegra_dfll_runtime_resume, NULL) SET_SYSTEM_SLEEP_PM_OPS(tegra_dfll_suspend, tegra_dfll_resume) }; static struct platform_driver tegra124_dfll_fcpu_driver = { .probe = tegra124_dfll_fcpu_probe, .remove = tegra124_dfll_fcpu_remove, .driver = { .name = "tegra124-dfll", .of_match_table = tegra124_dfll_fcpu_of_match, .pm = &tegra124_dfll_pm_ops, }, }; builtin_platform_driver(tegra124_dfll_fcpu_driver);