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