drivers/soc/tegra/fuse/fuse-tegra30.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2013-2014, NVIDIA CORPORATION.  All rights reserved.
   4  */
   5
   6 #include <linux/device.h>
   7 #include <linux/clk.h>
   8 #include <linux/err.h>
   9 #include <linux/io.h>
  10 #include <linux/kernel.h>
  11 #include <linux/nvmem-consumer.h>
  12 #include <linux/of_device.h>
  13 #include <linux/of_address.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/random.h>
  16
  17 #include <soc/tegra/fuse.h>
  18
  19 #include "fuse.h"
  20
  21 #define FUSE_BEGIN      0x100
  22
  23 /* Tegra30 and later */
  24 #define FUSE_VENDOR_CODE        0x100
  25 #define FUSE_FAB_CODE           0x104
  26 #define FUSE_LOT_CODE_0         0x108
  27 #define FUSE_LOT_CODE_1         0x10c
  28 #define FUSE_WAFER_ID           0x110
  29 #define FUSE_X_COORDINATE       0x114
  30 #define FUSE_Y_COORDINATE       0x118
  31
  32 #define FUSE_HAS_REVISION_INFO  BIT(0)
  33
  34 #if defined(CONFIG_ARCH_TEGRA_3x_SOC) || \
  35     defined(CONFIG_ARCH_TEGRA_114_SOC) || \
  36     defined(CONFIG_ARCH_TEGRA_124_SOC) || \
  37     defined(CONFIG_ARCH_TEGRA_132_SOC) || \
  38     defined(CONFIG_ARCH_TEGRA_210_SOC) || \
  39     defined(CONFIG_ARCH_TEGRA_186_SOC) || \
  40     defined(CONFIG_ARCH_TEGRA_194_SOC) || \
  41     defined(CONFIG_ARCH_TEGRA_234_SOC)
  42 static u32 tegra30_fuse_read_early(struct tegra_fuse *fuse, unsigned int offset)
  43 {
  44         if (WARN_ON(!fuse->base))
  45                 return 0;
  46
  47         return readl_relaxed(fuse->base + FUSE_BEGIN + offset);
  48 }
  49
  50 static u32 tegra30_fuse_read(struct tegra_fuse *fuse, unsigned int offset)
  51 {
  52         u32 value;
  53         int err;
  54
  55         err = clk_prepare_enable(fuse->clk);
  56         if (err < 0) {
  57                 dev_err(fuse->dev, "failed to enable FUSE clock: %d\n", err);
  58                 return 0;
  59         }
  60
  61         value = readl_relaxed(fuse->base + FUSE_BEGIN + offset);
  62
  63         clk_disable_unprepare(fuse->clk);
  64
  65         return value;
  66 }
  67
  68 static void __init tegra30_fuse_add_randomness(void)
  69 {
  70         u32 randomness[12];
  71
  72         randomness[0] = tegra_sku_info.sku_id;
  73         randomness[1] = tegra_read_straps();
  74         randomness[2] = tegra_read_chipid();
  75         randomness[3] = tegra_sku_info.cpu_process_id << 16;
  76         randomness[3] |= tegra_sku_info.soc_process_id;
  77         randomness[4] = tegra_sku_info.cpu_speedo_id << 16;
  78         randomness[4] |= tegra_sku_info.soc_speedo_id;
  79         randomness[5] = tegra_fuse_read_early(FUSE_VENDOR_CODE);
  80         randomness[6] = tegra_fuse_read_early(FUSE_FAB_CODE);
  81         randomness[7] = tegra_fuse_read_early(FUSE_LOT_CODE_0);
  82         randomness[8] = tegra_fuse_read_early(FUSE_LOT_CODE_1);
  83         randomness[9] = tegra_fuse_read_early(FUSE_WAFER_ID);
  84         randomness[10] = tegra_fuse_read_early(FUSE_X_COORDINATE);
  85         randomness[11] = tegra_fuse_read_early(FUSE_Y_COORDINATE);
  86
  87         add_device_randomness(randomness, sizeof(randomness));
  88 }
  89
  90 static void __init tegra30_fuse_init(struct tegra_fuse *fuse)
  91 {
  92         fuse->read_early = tegra30_fuse_read_early;
  93         fuse->read = tegra30_fuse_read;
  94
  95         tegra_init_revision();
  96
  97         if (fuse->soc->speedo_init)
  98                 fuse->soc->speedo_init(&tegra_sku_info);
  99
 100         tegra30_fuse_add_randomness();
 101 }
 102 #endif
 103
 104 #ifdef CONFIG_ARCH_TEGRA_3x_SOC
 105 static const struct tegra_fuse_info tegra30_fuse_info = {
 106         .read = tegra30_fuse_read,
 107         .size = 0x2a4,
 108         .spare = 0x144,
 109 };
 110
 111 const struct tegra_fuse_soc tegra30_fuse_soc = {
 112         .init = tegra30_fuse_init,
 113         .speedo_init = tegra30_init_speedo_data,
 114         .info = &tegra30_fuse_info,
 115         .soc_attr_group = &tegra_soc_attr_group,
 116 };
 117 #endif
 118
 119 #ifdef CONFIG_ARCH_TEGRA_114_SOC
 120 static const struct tegra_fuse_info tegra114_fuse_info = {
 121         .read = tegra30_fuse_read,
 122         .size = 0x2a0,
 123         .spare = 0x180,
 124 };
 125
 126 const struct tegra_fuse_soc tegra114_fuse_soc = {
 127         .init = tegra30_fuse_init,
 128         .speedo_init = tegra114_init_speedo_data,
 129         .info = &tegra114_fuse_info,
 130         .soc_attr_group = &tegra_soc_attr_group,
 131 };
 132 #endif
 133
 134 #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC)
 135 static const struct nvmem_cell_lookup tegra124_fuse_lookups[] = {
 136         {
 137                 .nvmem_name = "fuse",
 138                 .cell_name = "xusb-pad-calibration",
 139                 .dev_id = "7009f000.padctl",
 140                 .con_id = "calibration",
 141         }, {
 142                 .nvmem_name = "fuse",
 143                 .cell_name = "sata-calibration",
 144                 .dev_id = "70020000.sata",
 145                 .con_id = "calibration",
 146         }, {
 147                 .nvmem_name = "fuse",
 148                 .cell_name = "tsensor-common",
 149                 .dev_id = "700e2000.thermal-sensor",
 150                 .con_id = "common",
 151         }, {
 152                 .nvmem_name = "fuse",
 153                 .cell_name = "tsensor-realignment",
 154                 .dev_id = "700e2000.thermal-sensor",
 155                 .con_id = "realignment",
 156         }, {
 157                 .nvmem_name = "fuse",
 158                 .cell_name = "tsensor-cpu0",
 159                 .dev_id = "700e2000.thermal-sensor",
 160                 .con_id = "cpu0",
 161         }, {
 162                 .nvmem_name = "fuse",
 163                 .cell_name = "tsensor-cpu1",
 164                 .dev_id = "700e2000.thermal-sensor",
 165                 .con_id = "cpu1",
 166         }, {
 167                 .nvmem_name = "fuse",
 168                 .cell_name = "tsensor-cpu2",
 169                 .dev_id = "700e2000.thermal-sensor",
 170                 .con_id = "cpu2",
 171         }, {
 172                 .nvmem_name = "fuse",
 173                 .cell_name = "tsensor-cpu3",
 174                 .dev_id = "700e2000.thermal-sensor",
 175                 .con_id = "cpu3",
 176         }, {
 177                 .nvmem_name = "fuse",
 178                 .cell_name = "tsensor-mem0",
 179                 .dev_id = "700e2000.thermal-sensor",
 180                 .con_id = "mem0",
 181         }, {
 182                 .nvmem_name = "fuse",
 183                 .cell_name = "tsensor-mem1",
 184                 .dev_id = "700e2000.thermal-sensor",
 185                 .con_id = "mem1",
 186         }, {
 187                 .nvmem_name = "fuse",
 188                 .cell_name = "tsensor-gpu",
 189                 .dev_id = "700e2000.thermal-sensor",
 190                 .con_id = "gpu",
 191         }, {
 192                 .nvmem_name = "fuse",
 193                 .cell_name = "tsensor-pllx",
 194                 .dev_id = "700e2000.thermal-sensor",
 195                 .con_id = "pllx",
 196         },
 197 };
 198
 199 static const struct tegra_fuse_info tegra124_fuse_info = {
 200         .read = tegra30_fuse_read,
 201         .size = 0x300,
 202         .spare = 0x200,
 203 };
 204
 205 const struct tegra_fuse_soc tegra124_fuse_soc = {
 206         .init = tegra30_fuse_init,
 207         .speedo_init = tegra124_init_speedo_data,
 208         .info = &tegra124_fuse_info,
 209         .lookups = tegra124_fuse_lookups,
 210         .num_lookups = ARRAY_SIZE(tegra124_fuse_lookups),
 211         .soc_attr_group = &tegra_soc_attr_group,
 212 };
 213 #endif
 214
 215 #if defined(CONFIG_ARCH_TEGRA_210_SOC)
 216 static const struct nvmem_cell_lookup tegra210_fuse_lookups[] = {
 217         {
 218                 .nvmem_name = "fuse",
 219                 .cell_name = "tsensor-cpu1",
 220                 .dev_id = "700e2000.thermal-sensor",
 221                 .con_id = "cpu1",
 222         }, {
 223                 .nvmem_name = "fuse",
 224                 .cell_name = "tsensor-cpu2",
 225                 .dev_id = "700e2000.thermal-sensor",
 226                 .con_id = "cpu2",
 227         }, {
 228                 .nvmem_name = "fuse",
 229                 .cell_name = "tsensor-cpu0",
 230                 .dev_id = "700e2000.thermal-sensor",
 231                 .con_id = "cpu0",
 232         }, {
 233                 .nvmem_name = "fuse",
 234                 .cell_name = "xusb-pad-calibration",
 235                 .dev_id = "7009f000.padctl",
 236                 .con_id = "calibration",
 237         }, {
 238                 .nvmem_name = "fuse",
 239                 .cell_name = "tsensor-cpu3",
 240                 .dev_id = "700e2000.thermal-sensor",
 241                 .con_id = "cpu3",
 242         }, {
 243                 .nvmem_name = "fuse",
 244                 .cell_name = "sata-calibration",
 245                 .dev_id = "70020000.sata",
 246                 .con_id = "calibration",
 247         }, {
 248                 .nvmem_name = "fuse",
 249                 .cell_name = "tsensor-gpu",
 250                 .dev_id = "700e2000.thermal-sensor",
 251                 .con_id = "gpu",
 252         }, {
 253                 .nvmem_name = "fuse",
 254                 .cell_name = "tsensor-mem0",
 255                 .dev_id = "700e2000.thermal-sensor",
 256                 .con_id = "mem0",
 257         }, {
 258                 .nvmem_name = "fuse",
 259                 .cell_name = "tsensor-mem1",
 260                 .dev_id = "700e2000.thermal-sensor",
 261                 .con_id = "mem1",
 262         }, {
 263                 .nvmem_name = "fuse",
 264                 .cell_name = "tsensor-pllx",
 265                 .dev_id = "700e2000.thermal-sensor",
 266                 .con_id = "pllx",
 267         }, {
 268                 .nvmem_name = "fuse",
 269                 .cell_name = "tsensor-common",
 270                 .dev_id = "700e2000.thermal-sensor",
 271                 .con_id = "common",
 272         }, {
 273                 .nvmem_name = "fuse",
 274                 .cell_name = "gpu-calibration",
 275                 .dev_id = "57000000.gpu",
 276                 .con_id = "calibration",
 277         }, {
 278                 .nvmem_name = "fuse",
 279                 .cell_name = "xusb-pad-calibration-ext",
 280                 .dev_id = "7009f000.padctl",
 281                 .con_id = "calibration-ext",
 282         },
 283 };
 284
 285 static const struct tegra_fuse_info tegra210_fuse_info = {
 286         .read = tegra30_fuse_read,
 287         .size = 0x300,
 288         .spare = 0x280,
 289 };
 290
 291 const struct tegra_fuse_soc tegra210_fuse_soc = {
 292         .init = tegra30_fuse_init,
 293         .speedo_init = tegra210_init_speedo_data,
 294         .info = &tegra210_fuse_info,
 295         .lookups = tegra210_fuse_lookups,
 296         .num_lookups = ARRAY_SIZE(tegra210_fuse_lookups),
 297         .soc_attr_group = &tegra_soc_attr_group,
 298 };
 299 #endif
 300
 301 #if defined(CONFIG_ARCH_TEGRA_186_SOC)
 302 static const struct nvmem_cell_lookup tegra186_fuse_lookups[] = {
 303         {
 304                 .nvmem_name = "fuse",
 305                 .cell_name = "xusb-pad-calibration",
 306                 .dev_id = "3520000.padctl",
 307                 .con_id = "calibration",
 308         }, {
 309                 .nvmem_name = "fuse",
 310                 .cell_name = "xusb-pad-calibration-ext",
 311                 .dev_id = "3520000.padctl",
 312                 .con_id = "calibration-ext",
 313         },
 314 };
 315
 316 static const struct tegra_fuse_info tegra186_fuse_info = {
 317         .read = tegra30_fuse_read,
 318         .size = 0x300,
 319         .spare = 0x280,
 320 };
 321
 322 const struct tegra_fuse_soc tegra186_fuse_soc = {
 323         .init = tegra30_fuse_init,
 324         .info = &tegra186_fuse_info,
 325         .lookups = tegra186_fuse_lookups,
 326         .num_lookups = ARRAY_SIZE(tegra186_fuse_lookups),
 327         .soc_attr_group = &tegra_soc_attr_group,
 328 };
 329 #endif
 330
 331 #if defined(CONFIG_ARCH_TEGRA_194_SOC)
 332 static const struct nvmem_cell_lookup tegra194_fuse_lookups[] = {
 333         {
 334                 .nvmem_name = "fuse",
 335                 .cell_name = "xusb-pad-calibration",
 336                 .dev_id = "3520000.padctl",
 337                 .con_id = "calibration",
 338         }, {
 339                 .nvmem_name = "fuse",
 340                 .cell_name = "xusb-pad-calibration-ext",
 341                 .dev_id = "3520000.padctl",
 342                 .con_id = "calibration-ext",
 343         },
 344 };
 345
 346 static const struct tegra_fuse_info tegra194_fuse_info = {
 347         .read = tegra30_fuse_read,
 348         .size = 0x300,
 349         .spare = 0x280,
 350 };
 351
 352 const struct tegra_fuse_soc tegra194_fuse_soc = {
 353         .init = tegra30_fuse_init,
 354         .info = &tegra194_fuse_info,
 355         .lookups = tegra194_fuse_lookups,
 356         .num_lookups = ARRAY_SIZE(tegra194_fuse_lookups),
 357         .soc_attr_group = &tegra194_soc_attr_group,
 358 };
 359 #endif
 360
 361 #if defined(CONFIG_ARCH_TEGRA_234_SOC)
 362 static const struct nvmem_cell_lookup tegra234_fuse_lookups[] = {
 363         {
 364                 .nvmem_name = "fuse",
 365                 .cell_name = "xusb-pad-calibration",
 366                 .dev_id = "3520000.padctl",
 367                 .con_id = "calibration",
 368         }, {
 369                 .nvmem_name = "fuse",
 370                 .cell_name = "xusb-pad-calibration-ext",
 371                 .dev_id = "3520000.padctl",
 372                 .con_id = "calibration-ext",
 373         },
 374 };
 375
 376 static const struct tegra_fuse_info tegra234_fuse_info = {
 377         .read = tegra30_fuse_read,
 378         .size = 0x300,
 379         .spare = 0x280,
 380 };
 381
 382 const struct tegra_fuse_soc tegra234_fuse_soc = {
 383         .init = tegra30_fuse_init,
 384         .info = &tegra234_fuse_info,
 385         .lookups = tegra234_fuse_lookups,
 386         .num_lookups = ARRAY_SIZE(tegra234_fuse_lookups),
 387         .soc_attr_group = &tegra194_soc_attr_group,
 388 };
 389 #endif