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