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 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/console.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/regulator/machine.h>
  17 #include <linux/i2c.h>
  18 #include <linux/i2c/at24.h>
  19 #include <linux/etherdevice.h>
  20 #include <linux/spi/spi.h>
  21 #include <linux/spi/flash.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25 #include <mach/common.h>
  26 #include <mach/cp_intc.h>
  27 #include <mach/da8xx.h>
  28 #include <mach/nand.h>
  29 #include <mach/mux.h>
  30 #include <mach/spi.h>
  31
  32 #define MITYOMAPL138_PHY_ID             "0:03"
  33
  34 #define FACTORY_CONFIG_MAGIC    0x012C0138
  35 #define FACTORY_CONFIG_VERSION  0x00010001
  36
  37 /* Data Held in On-Board I2C device */
  38 struct factory_config {
  39         u32     magic;
  40         u32     version;
  41         u8      mac[6];
  42         u32     fpga_type;
  43         u32     spare;
  44         u32     serialnumber;
  45         char    partnum[32];
  46 };
  47
  48 static struct factory_config factory_config;
  49
  50 struct part_no_info {
  51         const char      *part_no;       /* part number string of interest */
  52         int             max_freq;       /* khz */
  53 };
  54
  55 static struct part_no_info mityomapl138_pn_info[] = {
  56         {
  57                 .part_no        = "L138-C",
  58                 .max_freq       = 300000,
  59         },
  60         {
  61                 .part_no        = "L138-D",
  62                 .max_freq       = 375000,
  63         },
  64         {
  65                 .part_no        = "L138-F",
  66                 .max_freq       = 456000,
  67         },
  68         {
  69                 .part_no        = "1808-C",
  70                 .max_freq       = 300000,
  71         },
  72         {
  73                 .part_no        = "1808-D",
  74                 .max_freq       = 375000,
  75         },
  76         {
  77                 .part_no        = "1808-F",
  78                 .max_freq       = 456000,
  79         },
  80         {
  81                 .part_no        = "1810-D",
  82                 .max_freq       = 375000,
  83         },
  84 };
  85
  86 #ifdef CONFIG_CPU_FREQ
  87 static void mityomapl138_cpufreq_init(const char *partnum)
  88 {
  89         int i, ret;
  90
  91         for (i = 0; partnum && i < ARRAY_SIZE(mityomapl138_pn_info); i++) {
  92                 /*
  93                  * the part number has additional characters beyond what is
  94                  * stored in the table.  This information is not needed for
  95                  * determining the speed grade, and would require several
  96                  * more table entries.  Only check the first N characters
  97                  * for a match.
  98                  */
  99                 if (!strncmp(partnum, mityomapl138_pn_info[i].part_no,
 100                              strlen(mityomapl138_pn_info[i].part_no))) {
 101                         da850_max_speed = mityomapl138_pn_info[i].max_freq;
 102                         break;
 103                 }
 104         }
 105
 106         ret = da850_register_cpufreq("pll0_sysclk3");
 107         if (ret)
 108                 pr_warning("cpufreq registration failed: %d\n", ret);
 109 }
 110 #else
 111 static void mityomapl138_cpufreq_init(const char *partnum) { }
 112 #endif
 113
 114 static void read_factory_config(struct memory_accessor *a, void *context)
 115 {
 116         int ret;
 117         const char *partnum = NULL;
 118         struct davinci_soc_info *soc_info = &davinci_soc_info;
 119
 120         ret = a->read(a, (char *)&factory_config, 0, sizeof(factory_config));
 121         if (ret != sizeof(struct factory_config)) {
 122                 pr_warning("MityOMAPL138: Read Factory Config Failed: %d\n",
 123                                 ret);
 124                 goto bad_config;
 125         }
 126
 127         if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
 128                 pr_warning("MityOMAPL138: Factory Config Magic Wrong (%X)\n",
 129                                 factory_config.magic);
 130                 goto bad_config;
 131         }
 132
 133         if (factory_config.version != FACTORY_CONFIG_VERSION) {
 134                 pr_warning("MityOMAPL138: Factory Config Version Wrong (%X)\n",
 135                                 factory_config.version);
 136                 goto bad_config;
 137         }
 138
 139         pr_info("MityOMAPL138: Found MAC = %pM\n", factory_config.mac);
 140         if (is_valid_ether_addr(factory_config.mac))
 141                 memcpy(soc_info->emac_pdata->mac_addr,
 142                         factory_config.mac, ETH_ALEN);
 143         else
 144                 pr_warning("MityOMAPL138: Invalid MAC found "
 145                                 "in factory config block\n");
 146
 147         partnum = factory_config.partnum;
 148         pr_info("MityOMAPL138: Part Number = %s\n", partnum);
 149
 150 bad_config:
 151         /* default maximum speed is valid for all platforms */
 152         mityomapl138_cpufreq_init(partnum);
 153 }
 154
 155 static struct at24_platform_data mityomapl138_fd_chip = {
 156         .byte_len       = 256,
 157         .page_size      = 8,
 158         .flags          = AT24_FLAG_READONLY | AT24_FLAG_IRUGO,
 159         .setup          = read_factory_config,
 160         .context        = NULL,
 161 };
 162
 163 static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
 164         .bus_freq       = 100,  /* kHz */
 165         .bus_delay      = 0,    /* usec */
 166 };
 167
 168 /* TPS65023 voltage regulator support */
 169 /* 1.2V Core */
 170 static struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {
 171         {
 172                 .supply = "cvdd",
 173         },
 174 };
 175
 176 /* 1.8V */
 177 static struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {
 178         {
 179                 .supply = "usb0_vdda18",
 180         },
 181         {
 182                 .supply = "usb1_vdda18",
 183         },
 184         {
 185                 .supply = "ddr_dvdd18",
 186         },
 187         {
 188                 .supply = "sata_vddr",
 189         },
 190 };
 191
 192 /* 1.2V */
 193 static struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {
 194         {
 195                 .supply = "sata_vdd",
 196         },
 197         {
 198                 .supply = "usb_cvdd",
 199         },
 200         {
 201                 .supply = "pll0_vdda",
 202         },
 203         {
 204                 .supply = "pll1_vdda",
 205         },
 206 };
 207
 208 /* 1.8V Aux LDO, not used */
 209 static struct regulator_consumer_supply tps65023_ldo1_consumers[] = {
 210         {
 211                 .supply = "1.8v_aux",
 212         },
 213 };
 214
 215 /* FPGA VCC Aux (2.5 or 3.3) LDO */
 216 static struct regulator_consumer_supply tps65023_ldo2_consumers[] = {
 217         {
 218                 .supply = "vccaux",
 219         },
 220 };
 221
 222 static struct regulator_init_data tps65023_regulator_data[] = {
 223         /* dcdc1 */
 224         {
 225                 .constraints = {
 226                         .min_uV = 1150000,
 227                         .max_uV = 1350000,
 228                         .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 229                                           REGULATOR_CHANGE_STATUS,
 230                         .boot_on = 1,
 231                 },
 232                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),
 233                 .consumer_supplies = tps65023_dcdc1_consumers,
 234         },
 235         /* dcdc2 */
 236         {
 237                 .constraints = {
 238                         .min_uV = 1800000,
 239                         .max_uV = 1800000,
 240                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 241                         .boot_on = 1,
 242                 },
 243                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),
 244                 .consumer_supplies = tps65023_dcdc2_consumers,
 245         },
 246         /* dcdc3 */
 247         {
 248                 .constraints = {
 249                         .min_uV = 1200000,
 250                         .max_uV = 1200000,
 251                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 252                         .boot_on = 1,
 253                 },
 254                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),
 255                 .consumer_supplies = tps65023_dcdc3_consumers,
 256         },
 257         /* ldo1 */
 258         {
 259                 .constraints = {
 260                         .min_uV = 1800000,
 261                         .max_uV = 1800000,
 262                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 263                         .boot_on = 1,
 264                 },
 265                 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),
 266                 .consumer_supplies = tps65023_ldo1_consumers,
 267         },
 268         /* ldo2 */
 269         {
 270                 .constraints = {
 271                         .min_uV = 2500000,
 272                         .max_uV = 3300000,
 273                         .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 274                                           REGULATOR_CHANGE_STATUS,
 275                         .boot_on = 1,
 276                 },
 277                 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),
 278                 .consumer_supplies = tps65023_ldo2_consumers,
 279         },
 280 };
 281
 282 static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
 283         {
 284                 I2C_BOARD_INFO("tps65023", 0x48),
 285                 .platform_data = &tps65023_regulator_data[0],
 286         },
 287         {
 288                 I2C_BOARD_INFO("24c02", 0x50),
 289                 .platform_data = &mityomapl138_fd_chip,
 290         },
 291 };
 292
 293 static int __init pmic_tps65023_init(void)
 294 {
 295         return i2c_register_board_info(1, mityomap_tps65023_info,
 296                                         ARRAY_SIZE(mityomap_tps65023_info));
 297 }
 298
 299 /*
 300  * SPI Devices:
 301  *      SPI1_CS0: 8M Flash ST-M25P64-VME6G
 302  */
 303 static struct mtd_partition spi_flash_partitions[] = {
 304         [0] = {
 305                 .name           = "ubl",
 306                 .offset         = 0,
 307                 .size           = SZ_64K,
 308                 .mask_flags     = MTD_WRITEABLE,
 309         },
 310         [1] = {
 311                 .name           = "u-boot",
 312                 .offset         = MTDPART_OFS_APPEND,
 313                 .size           = SZ_512K,
 314                 .mask_flags     = MTD_WRITEABLE,
 315         },
 316         [2] = {
 317                 .name           = "u-boot-env",
 318                 .offset         = MTDPART_OFS_APPEND,
 319                 .size           = SZ_64K,
 320                 .mask_flags     = MTD_WRITEABLE,
 321         },
 322         [3] = {
 323                 .name           = "periph-config",
 324                 .offset         = MTDPART_OFS_APPEND,
 325                 .size           = SZ_64K,
 326                 .mask_flags     = MTD_WRITEABLE,
 327         },
 328         [4] = {
 329                 .name           = "reserved",
 330                 .offset         = MTDPART_OFS_APPEND,
 331                 .size           = SZ_256K + SZ_64K,
 332         },
 333         [5] = {
 334                 .name           = "kernel",
 335                 .offset         = MTDPART_OFS_APPEND,
 336                 .size           = SZ_2M + SZ_1M,
 337         },
 338         [6] = {
 339                 .name           = "fpga",
 340                 .offset         = MTDPART_OFS_APPEND,
 341                 .size           = SZ_2M,
 342         },
 343         [7] = {
 344                 .name           = "spare",
 345                 .offset         = MTDPART_OFS_APPEND,
 346                 .size           = MTDPART_SIZ_FULL,
 347         },
 348 };
 349
 350 static struct flash_platform_data mityomapl138_spi_flash_data = {
 351         .name           = "m25p80",
 352         .parts          = spi_flash_partitions,
 353         .nr_parts       = ARRAY_SIZE(spi_flash_partitions),
 354         .type           = "m24p64",
 355 };
 356
 357 static struct davinci_spi_config spi_eprom_config = {
 358         .io_type        = SPI_IO_TYPE_DMA,
 359         .c2tdelay       = 8,
 360         .t2cdelay       = 8,
 361 };
 362
 363 static struct spi_board_info mityomapl138_spi_flash_info[] = {
 364         {
 365                 .modalias               = "m25p80",
 366                 .platform_data          = &mityomapl138_spi_flash_data,
 367                 .controller_data        = &spi_eprom_config,
 368                 .mode                   = SPI_MODE_0,
 369                 .max_speed_hz           = 30000000,
 370                 .bus_num                = 1,
 371                 .chip_select            = 0,
 372         },
 373 };
 374
 375 /*
 376  * MityDSP-L138 includes a 256 MByte large-page NAND flash
 377  * (128K blocks).
 378  */
 379 static struct mtd_partition mityomapl138_nandflash_partition[] = {
 380         {
 381                 .name           = "rootfs",
 382                 .offset         = 0,
 383                 .size           = SZ_128M,
 384                 .mask_flags     = 0, /* MTD_WRITEABLE, */
 385         },
 386         {
 387                 .name           = "homefs",
 388                 .offset         = MTDPART_OFS_APPEND,
 389                 .size           = MTDPART_SIZ_FULL,
 390                 .mask_flags     = 0,
 391         },
 392 };
 393
 394 static struct davinci_nand_pdata mityomapl138_nandflash_data = {
 395         .parts          = mityomapl138_nandflash_partition,
 396         .nr_parts       = ARRAY_SIZE(mityomapl138_nandflash_partition),
 397         .ecc_mode       = NAND_ECC_HW,
 398         .options        = NAND_USE_FLASH_BBT | NAND_BUSWIDTH_16,
 399         .ecc_bits       = 1, /* 4 bit mode is not supported with 16 bit NAND */
 400 };
 401
 402 static struct resource mityomapl138_nandflash_resource[] = {
 403         {
 404                 .start  = DA8XX_AEMIF_CS3_BASE,
 405                 .end    = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
 406                 .flags  = IORESOURCE_MEM,
 407         },
 408         {
 409                 .start  = DA8XX_AEMIF_CTL_BASE,
 410                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
 411                 .flags  = IORESOURCE_MEM,
 412         },
 413 };
 414
 415 static struct platform_device mityomapl138_nandflash_device = {
 416         .name           = "davinci_nand",
 417         .id             = 0,
 418         .dev            = {
 419                 .platform_data  = &mityomapl138_nandflash_data,
 420         },
 421         .num_resources  = ARRAY_SIZE(mityomapl138_nandflash_resource),
 422         .resource       = mityomapl138_nandflash_resource,
 423 };
 424
 425 static struct platform_device *mityomapl138_devices[] __initdata = {
 426         &mityomapl138_nandflash_device,
 427 };
 428
 429 static void __init mityomapl138_setup_nand(void)
 430 {
 431         platform_add_devices(mityomapl138_devices,
 432                                  ARRAY_SIZE(mityomapl138_devices));
 433 }
 434
 435 static struct davinci_uart_config mityomapl138_uart_config __initdata = {
 436         .enabled_uarts = 0x7,
 437 };
 438
 439 static const short mityomap_mii_pins[] = {
 440         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
 441         DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
 442         DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
 443         DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
 444         DA850_MDIO_D,
 445         -1
 446 };
 447
 448 static const short mityomap_rmii_pins[] = {
 449         DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
 450         DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
 451         DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
 452         DA850_MDIO_D,
 453         -1
 454 };
 455
 456 static void __init mityomapl138_config_emac(void)
 457 {
 458         void __iomem *cfg_chip3_base;
 459         int ret;
 460         u32 val;
 461         struct davinci_soc_info *soc_info = &davinci_soc_info;
 462
 463         soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
 464
 465         cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
 466         val = __raw_readl(cfg_chip3_base);
 467
 468         if (soc_info->emac_pdata->rmii_en) {
 469                 val |= BIT(8);
 470                 ret = davinci_cfg_reg_list(mityomap_rmii_pins);
 471                 pr_info("RMII PHY configured\n");
 472         } else {
 473                 val &= ~BIT(8);
 474                 ret = davinci_cfg_reg_list(mityomap_mii_pins);
 475                 pr_info("MII PHY configured\n");
 476         }
 477
 478         if (ret) {
 479                 pr_warning("mii/rmii mux setup failed: %d\n", ret);
 480                 return;
 481         }
 482
 483         /* configure the CFGCHIP3 register for RMII or MII */
 484         __raw_writel(val, cfg_chip3_base);
 485
 486         soc_info->emac_pdata->phy_id = MITYOMAPL138_PHY_ID;
 487
 488         ret = da8xx_register_emac();
 489         if (ret)
 490                 pr_warning("emac registration failed: %d\n", ret);
 491 }
 492
 493 static struct davinci_pm_config da850_pm_pdata = {
 494         .sleepcount = 128,
 495 };
 496
 497 static struct platform_device da850_pm_device = {
 498         .name   = "pm-davinci",
 499         .dev = {
 500                 .platform_data  = &da850_pm_pdata,
 501         },
 502         .id     = -1,
 503 };
 504
 505 static void __init mityomapl138_init(void)
 506 {
 507         int ret;
 508
 509         /* for now, no special EDMA channels are reserved */
 510         ret = da850_register_edma(NULL);
 511         if (ret)
 512                 pr_warning("edma registration failed: %d\n", ret);
 513
 514         ret = da8xx_register_watchdog();
 515         if (ret)
 516                 pr_warning("watchdog registration failed: %d\n", ret);
 517
 518         davinci_serial_init(&mityomapl138_uart_config);
 519
 520         ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);
 521         if (ret)
 522                 pr_warning("i2c0 registration failed: %d\n", ret);
 523
 524         ret = pmic_tps65023_init();
 525         if (ret)
 526                 pr_warning("TPS65023 PMIC init failed: %d\n", ret);
 527
 528         mityomapl138_setup_nand();
 529
 530         ret = da8xx_register_spi(1, mityomapl138_spi_flash_info,
 531                                ARRAY_SIZE(mityomapl138_spi_flash_info));
 532         if (ret)
 533                 pr_warning("spi 1 registration failed: %d\n", ret);
 534
 535         mityomapl138_config_emac();
 536
 537         ret = da8xx_register_rtc();
 538         if (ret)
 539                 pr_warning("rtc setup failed: %d\n", ret);
 540
 541         ret = da8xx_register_cpuidle();
 542         if (ret)
 543                 pr_warning("cpuidle registration failed: %d\n", ret);
 544
 545         ret = da850_register_pm(&da850_pm_device);
 546         if (ret)
 547                 pr_warning("da850_evm_init: suspend registration failed: %d\n",
 548                                 ret);
 549 }
 550
 551 #ifdef CONFIG_SERIAL_8250_CONSOLE
 552 static int __init mityomapl138_console_init(void)
 553 {
 554         if (!machine_is_mityomapl138())
 555                 return 0;
 556
 557         return add_preferred_console("ttyS", 1, "115200");
 558 }
 559 console_initcall(mityomapl138_console_init);
 560 #endif
 561
 562 static void __init mityomapl138_map_io(void)
 563 {
 564         da850_init();
 565 }
 566
 567 MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
 568         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 569         .map_io         = mityomapl138_map_io,
 570         .init_irq       = cp_intc_init,
 571         .timer          = &davinci_timer,
 572         .init_machine   = mityomapl138_init,
 573 MACHINE_END