arch/arm/mach-davinci/board-mityomapl138.c

   1 /*
   2  * Critical Link MityOMAP-L138 SoM
   3  *
   4  * Copyright (C) 2010 Critical Link LLC - http://www.criticallink.com
   5  *
   6  * This file is licensed under the terms of the GNU General Public License
   7  * version 2. This program is licensed "as is" without any warranty of
   8  * any kind, whether express or implied.
   9  */
  10
  11 #define pr_fmt(fmt) "MityOMAPL138: " fmt
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/console.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/mtd/partitions.h>
  18 #include <linux/regulator/machine.h>
  19 #include <linux/i2c.h>
  20 #include <linux/platform_data/at24.h>
  21 #include <linux/etherdevice.h>
  22 #include <linux/spi/spi.h>
  23 #include <linux/spi/flash.h>
  24
  25 #include <asm/io.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <mach/common.h>
  29 #include "cp_intc.h"
  30 #include <mach/da8xx.h>
  31 #include <linux/platform_data/mtd-davinci.h>
  32 #include <linux/platform_data/mtd-davinci-aemif.h>
  33 #include <mach/mux.h>
  34 #include <linux/platform_data/spi-davinci.h>
  35
  36 #define MITYOMAPL138_PHY_ID             ""
  37
  38 #define FACTORY_CONFIG_MAGIC    0x012C0138
  39 #define FACTORY_CONFIG_VERSION  0x00010001
  40
  41 /* Data Held in On-Board I2C device */
  42 struct factory_config {
  43         u32     magic;
  44         u32     version;
  45         u8      mac[6];
  46         u32     fpga_type;
  47         u32     spare;
  48         u32     serialnumber;
  49         char    partnum[32];
  50 };
  51
  52 static struct factory_config factory_config;
  53
  54 #ifdef CONFIG_CPU_FREQ
  55 struct part_no_info {
  56         const char      *part_no;       /* part number string of interest */
  57         int             max_freq;       /* khz */
  58 };
  59
  60 static struct part_no_info mityomapl138_pn_info[] = {
  61         {
  62                 .part_no        = "L138-C",
  63                 .max_freq       = 300000,
  64         },
  65         {
  66                 .part_no        = "L138-D",
  67                 .max_freq       = 375000,
  68         },
  69         {
  70                 .part_no        = "L138-F",
  71                 .max_freq       = 456000,
  72         },
  73         {
  74                 .part_no        = "1808-C",
  75                 .max_freq       = 300000,
  76         },
  77         {
  78                 .part_no        = "1808-D",
  79                 .max_freq       = 375000,
  80         },
  81         {
  82                 .part_no        = "1808-F",
  83                 .max_freq       = 456000,
  84         },
  85         {
  86                 .part_no        = "1810-D",
  87                 .max_freq       = 375000,
  88         },
  89 };
  90
  91 static void mityomapl138_cpufreq_init(const char *partnum)
  92 {
  93         int i, ret;
  94
  95         for (i = 0; partnum && i < ARRAY_SIZE(mityomapl138_pn_info); i++) {
  96                 /*
  97                  * the part number has additional characters beyond what is
  98                  * stored in the table.  This information is not needed for
  99                  * determining the speed grade, and would require several
 100                  * more table entries.  Only check the first N characters
 101                  * for a match.
 102                  */
 103                 if (!strncmp(partnum, mityomapl138_pn_info[i].part_no,
 104                              strlen(mityomapl138_pn_info[i].part_no))) {
 105                         da850_max_speed = mityomapl138_pn_info[i].max_freq;
 106                         break;
 107                 }
 108         }
 109
 110         ret = da850_register_cpufreq("pll0_sysclk3");
 111         if (ret)
 112                 pr_warn("cpufreq registration failed: %d\n", ret);
 113 }
 114 #else
 115 static void mityomapl138_cpufreq_init(const char *partnum) { }
 116 #endif
 117
 118 static void read_factory_config(struct nvmem_device *nvmem, void *context)
 119 {
 120         int ret;
 121         const char *partnum = NULL;
 122         struct davinci_soc_info *soc_info = &davinci_soc_info;
 123
 124         if (!IS_BUILTIN(CONFIG_NVMEM)) {
 125                 pr_warn("Factory Config not available without CONFIG_NVMEM\n");
 126                 goto bad_config;
 127         }
 128
 129         ret = nvmem_device_read(nvmem, 0, sizeof(factory_config),
 130                                 &factory_config);
 131         if (ret != sizeof(struct factory_config)) {
 132                 pr_warn("Read Factory Config Failed: %d\n", ret);
 133                 goto bad_config;
 134         }
 135
 136         if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
 137                 pr_warn("Factory Config Magic Wrong (%X)\n",
 138                         factory_config.magic);
 139                 goto bad_config;
 140         }
 141
 142         if (factory_config.version != FACTORY_CONFIG_VERSION) {
 143                 pr_warn("Factory Config Version Wrong (%X)\n",
 144                         factory_config.version);
 145                 goto bad_config;
 146         }
 147
 148         pr_info("Found MAC = %pM\n", factory_config.mac);
 149         if (is_valid_ether_addr(factory_config.mac))
 150                 memcpy(soc_info->emac_pdata->mac_addr,
 151                         factory_config.mac, ETH_ALEN);
 152         else
 153                 pr_warn("Invalid MAC found in factory config block\n");
 154
 155         partnum = factory_config.partnum;
 156         pr_info("Part Number = %s\n", partnum);
 157
 158 bad_config:
 159         /* default maximum speed is valid for all platforms */
 160         mityomapl138_cpufreq_init(partnum);
 161 }
 162
 163 static struct at24_platform_data mityomapl138_fd_chip = {
 164         .byte_len       = 256,
 165         .page_size      = 8,
 166         .flags          = AT24_FLAG_READONLY | AT24_FLAG_IRUGO,
 167         .setup          = read_factory_config,
 168         .context        = NULL,
 169 };
 170
 171 static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
 172         .bus_freq       = 100,  /* kHz */
 173         .bus_delay      = 0,    /* usec */
 174 };
 175
 176 /* TPS65023 voltage regulator support */
 177 /* 1.2V Core */
 178 static struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {
 179         {
 180                 .supply = "cvdd",
 181         },
 182 };
 183
 184 /* 1.8V */
 185 static struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {
 186         {
 187                 .supply = "usb0_vdda18",
 188         },
 189         {
 190                 .supply = "usb1_vdda18",
 191         },
 192         {
 193                 .supply = "ddr_dvdd18",
 194         },
 195         {
 196                 .supply = "sata_vddr",
 197         },
 198 };
 199
 200 /* 1.2V */
 201 static struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {
 202         {
 203                 .supply = "sata_vdd",
 204         },
 205         {
 206                 .supply = "usb_cvdd",
 207         },
 208         {
 209                 .supply = "pll0_vdda",
 210         },
 211         {
 212                 .supply = "pll1_vdda",
 213         },
 214 };
 215
 216 /* 1.8V Aux LDO, not used */
 217 static struct regulator_consumer_supply tps65023_ldo1_consumers[] = {
 218         {
 219                 .supply = "1.8v_aux",
 220         },
 221 };
 222
 223 /* FPGA VCC Aux (2.5 or 3.3) LDO */
 224 static struct regulator_consumer_supply tps65023_ldo2_consumers[] = {
 225         {
 226                 .supply = "vccaux",
 227         },
 228 };
 229
 230 static struct regulator_init_data tps65023_regulator_data[] = {
 231         /* dcdc1 */
 232         {
 233                 .constraints = {
 234                         .min_uV = 1150000,
 235                         .max_uV = 1350000,
 236                         .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 237                                           REGULATOR_CHANGE_STATUS,
 238                         .boot_on = 1,
 239                 },
 240                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),
 241                 .consumer_supplies = tps65023_dcdc1_consumers,
 242         },
 243         /* dcdc2 */
 244         {
 245                 .constraints = {
 246                         .min_uV = 1800000,
 247                         .max_uV = 1800000,
 248                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 249                         .boot_on = 1,
 250                 },
 251                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),
 252                 .consumer_supplies = tps65023_dcdc2_consumers,
 253         },
 254         /* dcdc3 */
 255         {
 256                 .constraints = {
 257                         .min_uV = 1200000,
 258                         .max_uV = 1200000,
 259                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 260                         .boot_on = 1,
 261                 },
 262                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),
 263                 .consumer_supplies = tps65023_dcdc3_consumers,
 264         },
 265         /* ldo1 */
 266         {
 267                 .constraints = {
 268                         .min_uV = 1800000,
 269                         .max_uV = 1800000,
 270                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 271                         .boot_on = 1,
 272                 },
 273                 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),
 274                 .consumer_supplies = tps65023_ldo1_consumers,
 275         },
 276         /* ldo2 */
 277         {
 278                 .constraints = {
 279                         .min_uV = 2500000,
 280                         .max_uV = 3300000,
 281                         .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 282                                           REGULATOR_CHANGE_STATUS,
 283                         .boot_on = 1,
 284                 },
 285                 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),
 286                 .consumer_supplies = tps65023_ldo2_consumers,
 287         },
 288 };
 289
 290 static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
 291         {
 292                 I2C_BOARD_INFO("tps65023", 0x48),
 293                 .platform_data = &tps65023_regulator_data[0],
 294         },
 295         {
 296                 I2C_BOARD_INFO("24c02", 0x50),
 297                 .platform_data = &mityomapl138_fd_chip,
 298         },
 299 };
 300
 301 static int __init pmic_tps65023_init(void)
 302 {
 303         return i2c_register_board_info(1, mityomap_tps65023_info,
 304                                         ARRAY_SIZE(mityomap_tps65023_info));
 305 }
 306
 307 /*
 308  * SPI Devices:
 309  *      SPI1_CS0: 8M Flash ST-M25P64-VME6G
 310  */
 311 static struct mtd_partition spi_flash_partitions[] = {
 312         [0] = {
 313                 .name           = "ubl",
 314                 .offset         = 0,
 315                 .size           = SZ_64K,
 316                 .mask_flags     = MTD_WRITEABLE,
 317         },
 318         [1] = {
 319                 .name           = "u-boot",
 320                 .offset         = MTDPART_OFS_APPEND,
 321                 .size           = SZ_512K,
 322                 .mask_flags     = MTD_WRITEABLE,
 323         },
 324         [2] = {
 325                 .name           = "u-boot-env",
 326                 .offset         = MTDPART_OFS_APPEND,
 327                 .size           = SZ_64K,
 328                 .mask_flags     = MTD_WRITEABLE,
 329         },
 330         [3] = {
 331                 .name           = "periph-config",
 332                 .offset         = MTDPART_OFS_APPEND,
 333                 .size           = SZ_64K,
 334                 .mask_flags     = MTD_WRITEABLE,
 335         },
 336         [4] = {
 337                 .name           = "reserved",
 338                 .offset         = MTDPART_OFS_APPEND,
 339                 .size           = SZ_256K + SZ_64K,
 340         },
 341         [5] = {
 342                 .name           = "kernel",
 343                 .offset         = MTDPART_OFS_APPEND,
 344                 .size           = SZ_2M + SZ_1M,
 345         },
 346         [6] = {
 347                 .name           = "fpga",
 348                 .offset         = MTDPART_OFS_APPEND,
 349                 .size           = SZ_2M,
 350         },
 351         [7] = {
 352                 .name           = "spare",
 353                 .offset         = MTDPART_OFS_APPEND,
 354                 .size           = MTDPART_SIZ_FULL,
 355         },
 356 };
 357
 358 static struct flash_platform_data mityomapl138_spi_flash_data = {
 359         .name           = "m25p80",
 360         .parts          = spi_flash_partitions,
 361         .nr_parts       = ARRAY_SIZE(spi_flash_partitions),
 362         .type           = "m24p64",
 363 };
 364
 365 static struct davinci_spi_config spi_eprom_config = {
 366         .io_type        = SPI_IO_TYPE_DMA,
 367         .c2tdelay       = 8,
 368         .t2cdelay       = 8,
 369 };
 370
 371 static struct spi_board_info mityomapl138_spi_flash_info[] = {
 372         {
 373                 .modalias               = "m25p80",
 374                 .platform_data          = &mityomapl138_spi_flash_data,
 375                 .controller_data        = &spi_eprom_config,
 376                 .mode                   = SPI_MODE_0,
 377                 .max_speed_hz           = 30000000,
 378                 .bus_num                = 1,
 379                 .chip_select            = 0,
 380         },
 381 };
 382
 383 /*
 384  * MityDSP-L138 includes a 256 MByte large-page NAND flash
 385  * (128K blocks).
 386  */
 387 static struct mtd_partition mityomapl138_nandflash_partition[] = {
 388         {
 389                 .name           = "rootfs",
 390                 .offset         = 0,
 391                 .size           = SZ_128M,
 392                 .mask_flags     = 0, /* MTD_WRITEABLE, */
 393         },
 394         {
 395                 .name           = "homefs",
 396                 .offset         = MTDPART_OFS_APPEND,
 397                 .size           = MTDPART_SIZ_FULL,
 398                 .mask_flags     = 0,
 399         },
 400 };
 401
 402 static struct davinci_nand_pdata mityomapl138_nandflash_data = {
 403         .parts          = mityomapl138_nandflash_partition,
 404         .nr_parts       = ARRAY_SIZE(mityomapl138_nandflash_partition),
 405         .ecc_mode       = NAND_ECC_HW,
 406         .bbt_options    = NAND_BBT_USE_FLASH,
 407         .options        = NAND_BUSWIDTH_16,
 408         .ecc_bits       = 1, /* 4 bit mode is not supported with 16 bit NAND */
 409 };
 410
 411 static struct resource mityomapl138_nandflash_resource[] = {
 412         {
 413                 .start  = DA8XX_AEMIF_CS3_BASE,
 414                 .end    = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
 415                 .flags  = IORESOURCE_MEM,
 416         },
 417         {
 418                 .start  = DA8XX_AEMIF_CTL_BASE,
 419                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
 420                 .flags  = IORESOURCE_MEM,
 421         },
 422 };
 423
 424 static struct platform_device mityomapl138_nandflash_device = {
 425         .name           = "davinci_nand",
 426         .id             = 1,
 427         .dev            = {
 428                 .platform_data  = &mityomapl138_nandflash_data,
 429         },
 430         .num_resources  = ARRAY_SIZE(mityomapl138_nandflash_resource),
 431         .resource       = mityomapl138_nandflash_resource,
 432 };
 433
 434 static struct platform_device *mityomapl138_devices[] __initdata = {
 435         &mityomapl138_nandflash_device,
 436 };
 437
 438 static void __init mityomapl138_setup_nand(void)
 439 {
 440         platform_add_devices(mityomapl138_devices,
 441                                  ARRAY_SIZE(mityomapl138_devices));
 442
 443         if (davinci_aemif_setup(&mityomapl138_nandflash_device))
 444                 pr_warn("%s: Cannot configure AEMIF\n", __func__);
 445 }
 446
 447 static const short mityomap_mii_pins[] = {
 448         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
 449         DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
 450         DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
 451         DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
 452         DA850_MDIO_D,
 453         -1
 454 };
 455
 456 static const short mityomap_rmii_pins[] = {
 457         DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
 458         DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
 459         DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
 460         DA850_MDIO_D,
 461         -1
 462 };
 463
 464 static void __init mityomapl138_config_emac(void)
 465 {
 466         void __iomem *cfg_chip3_base;
 467         int ret;
 468         u32 val;
 469         struct davinci_soc_info *soc_info = &davinci_soc_info;
 470
 471         soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
 472
 473         cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
 474         val = __raw_readl(cfg_chip3_base);
 475
 476         if (soc_info->emac_pdata->rmii_en) {
 477                 val |= BIT(8);
 478                 ret = davinci_cfg_reg_list(mityomap_rmii_pins);
 479                 pr_info("RMII PHY configured\n");
 480         } else {
 481                 val &= ~BIT(8);
 482                 ret = davinci_cfg_reg_list(mityomap_mii_pins);
 483                 pr_info("MII PHY configured\n");
 484         }
 485
 486         if (ret) {
 487                 pr_warn("mii/rmii mux setup failed: %d\n", ret);
 488                 return;
 489         }
 490
 491         /* configure the CFGCHIP3 register for RMII or MII */
 492         __raw_writel(val, cfg_chip3_base);
 493
 494         soc_info->emac_pdata->phy_id = MITYOMAPL138_PHY_ID;
 495
 496         ret = da8xx_register_emac();
 497         if (ret)
 498                 pr_warn("emac registration failed: %d\n", ret);
 499 }
 500
 501 static void __init mityomapl138_init(void)
 502 {
 503         int ret;
 504
 505         ret = da8xx_register_cfgchip();
 506         if (ret)
 507                 pr_warn("%s: CFGCHIP registration failed: %d\n", __func__, ret);
 508
 509         /* for now, no special EDMA channels are reserved */
 510         ret = da850_register_edma(NULL);
 511         if (ret)
 512                 pr_warn("edma registration failed: %d\n", ret);
 513
 514         ret = da8xx_register_watchdog();
 515         if (ret)
 516                 pr_warn("watchdog registration failed: %d\n", ret);
 517
 518         davinci_serial_init(da8xx_serial_device);
 519
 520         ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);
 521         if (ret)
 522                 pr_warn("i2c0 registration failed: %d\n", ret);
 523
 524         ret = pmic_tps65023_init();
 525         if (ret)
 526                 pr_warn("TPS65023 PMIC init failed: %d\n", ret);
 527
 528         mityomapl138_setup_nand();
 529
 530         ret = spi_register_board_info(mityomapl138_spi_flash_info,
 531                                       ARRAY_SIZE(mityomapl138_spi_flash_info));
 532         if (ret)
 533                 pr_warn("spi info registration failed: %d\n", ret);
 534
 535         ret = da8xx_register_spi_bus(1,
 536                                      ARRAY_SIZE(mityomapl138_spi_flash_info));
 537         if (ret)
 538                 pr_warn("spi 1 registration failed: %d\n", ret);
 539
 540         mityomapl138_config_emac();
 541
 542         ret = da8xx_register_rtc();
 543         if (ret)
 544                 pr_warn("rtc setup failed: %d\n", ret);
 545
 546         ret = da8xx_register_cpuidle();
 547         if (ret)
 548                 pr_warn("cpuidle registration failed: %d\n", ret);
 549
 550         davinci_pm_init();
 551 }
 552
 553 #ifdef CONFIG_SERIAL_8250_CONSOLE
 554 static int __init mityomapl138_console_init(void)
 555 {
 556         if (!machine_is_mityomapl138())
 557                 return 0;
 558
 559         return add_preferred_console("ttyS", 1, "115200");
 560 }
 561 console_initcall(mityomapl138_console_init);
 562 #endif
 563
 564 static void __init mityomapl138_map_io(void)
 565 {
 566         da850_init();
 567 }
 568
 569 MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
 570         .atag_offset    = 0x100,
 571         .map_io         = mityomapl138_map_io,
 572         .init_irq       = cp_intc_init,
 573         .init_time      = davinci_timer_init,
 574         .init_machine   = mityomapl138_init,
 575         .init_late      = davinci_init_late,
 576         .dma_zone_size  = SZ_128M,
 577         .restart        = da8xx_restart,
 578 MACHINE_END