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
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/arch.h>
  23 #include <mach/common.h>
  24 #include <mach/cp_intc.h>
  25 #include <mach/da8xx.h>
  26 #include <mach/nand.h>
  27 #include <mach/mux.h>
  28
  29 #define MITYOMAPL138_PHY_ID             "0:03"
  30
  31 #define FACTORY_CONFIG_MAGIC    0x012C0138
  32 #define FACTORY_CONFIG_VERSION  0x00010001
  33
  34 /* Data Held in On-Board I2C device */
  35 struct factory_config {
  36         u32     magic;
  37         u32     version;
  38         u8      mac[6];
  39         u32     fpga_type;
  40         u32     spare;
  41         u32     serialnumber;
  42         char    partnum[32];
  43 };
  44
  45 static struct factory_config factory_config;
  46
  47 static void read_factory_config(struct memory_accessor *a, void *context)
  48 {
  49         int ret;
  50         struct davinci_soc_info *soc_info = &davinci_soc_info;
  51
  52         ret = a->read(a, (char *)&factory_config, 0, sizeof(factory_config));
  53         if (ret != sizeof(struct factory_config)) {
  54                 pr_warning("MityOMAPL138: Read Factory Config Failed: %d\n",
  55                                 ret);
  56                 return;
  57         }
  58
  59         if (factory_config.magic != FACTORY_CONFIG_MAGIC) {
  60                 pr_warning("MityOMAPL138: Factory Config Magic Wrong (%X)\n",
  61                                 factory_config.magic);
  62                 return;
  63         }
  64
  65         if (factory_config.version != FACTORY_CONFIG_VERSION) {
  66                 pr_warning("MityOMAPL138: Factory Config Version Wrong (%X)\n",
  67                                 factory_config.version);
  68                 return;
  69         }
  70
  71         pr_info("MityOMAPL138: Found MAC = %pM\n", factory_config.mac);
  72         pr_info("MityOMAPL138: Part Number = %s\n", factory_config.partnum);
  73         if (is_valid_ether_addr(factory_config.mac))
  74                 memcpy(soc_info->emac_pdata->mac_addr,
  75                         factory_config.mac, ETH_ALEN);
  76         else
  77                 pr_warning("MityOMAPL138: Invalid MAC found "
  78                                 "in factory config block\n");
  79 }
  80
  81 static struct at24_platform_data mityomapl138_fd_chip = {
  82         .byte_len       = 256,
  83         .page_size      = 8,
  84         .flags          = AT24_FLAG_READONLY | AT24_FLAG_IRUGO,
  85         .setup          = read_factory_config,
  86         .context        = NULL,
  87 };
  88
  89 static struct davinci_i2c_platform_data mityomap_i2c_0_pdata = {
  90         .bus_freq       = 100,  /* kHz */
  91         .bus_delay      = 0,    /* usec */
  92 };
  93
  94 /* TPS65023 voltage regulator support */
  95 /* 1.2V Core */
  96 static struct regulator_consumer_supply tps65023_dcdc1_consumers[] = {
  97         {
  98                 .supply = "cvdd",
  99         },
 100 };
 101
 102 /* 1.8V */
 103 static struct regulator_consumer_supply tps65023_dcdc2_consumers[] = {
 104         {
 105                 .supply = "usb0_vdda18",
 106         },
 107         {
 108                 .supply = "usb1_vdda18",
 109         },
 110         {
 111                 .supply = "ddr_dvdd18",
 112         },
 113         {
 114                 .supply = "sata_vddr",
 115         },
 116 };
 117
 118 /* 1.2V */
 119 static struct regulator_consumer_supply tps65023_dcdc3_consumers[] = {
 120         {
 121                 .supply = "sata_vdd",
 122         },
 123         {
 124                 .supply = "usb_cvdd",
 125         },
 126         {
 127                 .supply = "pll0_vdda",
 128         },
 129         {
 130                 .supply = "pll1_vdda",
 131         },
 132 };
 133
 134 /* 1.8V Aux LDO, not used */
 135 static struct regulator_consumer_supply tps65023_ldo1_consumers[] = {
 136         {
 137                 .supply = "1.8v_aux",
 138         },
 139 };
 140
 141 /* FPGA VCC Aux (2.5 or 3.3) LDO */
 142 static struct regulator_consumer_supply tps65023_ldo2_consumers[] = {
 143         {
 144                 .supply = "vccaux",
 145         },
 146 };
 147
 148 static struct regulator_init_data tps65023_regulator_data[] = {
 149         /* dcdc1 */
 150         {
 151                 .constraints = {
 152                         .min_uV = 1150000,
 153                         .max_uV = 1350000,
 154                         .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 155                                           REGULATOR_CHANGE_STATUS,
 156                         .boot_on = 1,
 157                 },
 158                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc1_consumers),
 159                 .consumer_supplies = tps65023_dcdc1_consumers,
 160         },
 161         /* dcdc2 */
 162         {
 163                 .constraints = {
 164                         .min_uV = 1800000,
 165                         .max_uV = 1800000,
 166                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 167                         .boot_on = 1,
 168                 },
 169                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc2_consumers),
 170                 .consumer_supplies = tps65023_dcdc2_consumers,
 171         },
 172         /* dcdc3 */
 173         {
 174                 .constraints = {
 175                         .min_uV = 1200000,
 176                         .max_uV = 1200000,
 177                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 178                         .boot_on = 1,
 179                 },
 180                 .num_consumer_supplies = ARRAY_SIZE(tps65023_dcdc3_consumers),
 181                 .consumer_supplies = tps65023_dcdc3_consumers,
 182         },
 183         /* ldo1 */
 184         {
 185                 .constraints = {
 186                         .min_uV = 1800000,
 187                         .max_uV = 1800000,
 188                         .valid_ops_mask = REGULATOR_CHANGE_STATUS,
 189                         .boot_on = 1,
 190                 },
 191                 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo1_consumers),
 192                 .consumer_supplies = tps65023_ldo1_consumers,
 193         },
 194         /* ldo2 */
 195         {
 196                 .constraints = {
 197                         .min_uV = 2500000,
 198                         .max_uV = 3300000,
 199                         .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
 200                                           REGULATOR_CHANGE_STATUS,
 201                         .boot_on = 1,
 202                 },
 203                 .num_consumer_supplies = ARRAY_SIZE(tps65023_ldo2_consumers),
 204                 .consumer_supplies = tps65023_ldo2_consumers,
 205         },
 206 };
 207
 208 static struct i2c_board_info __initdata mityomap_tps65023_info[] = {
 209         {
 210                 I2C_BOARD_INFO("tps65023", 0x48),
 211                 .platform_data = &tps65023_regulator_data[0],
 212         },
 213         {
 214                 I2C_BOARD_INFO("24c02", 0x50),
 215                 .platform_data = &mityomapl138_fd_chip,
 216         },
 217 };
 218
 219 static int __init pmic_tps65023_init(void)
 220 {
 221         return i2c_register_board_info(1, mityomap_tps65023_info,
 222                                         ARRAY_SIZE(mityomap_tps65023_info));
 223 }
 224
 225 /*
 226  * MityDSP-L138 includes a 256 MByte large-page NAND flash
 227  * (128K blocks).
 228  */
 229 static struct mtd_partition mityomapl138_nandflash_partition[] = {
 230         {
 231                 .name           = "rootfs",
 232                 .offset         = 0,
 233                 .size           = SZ_128M,
 234                 .mask_flags     = 0, /* MTD_WRITEABLE, */
 235         },
 236         {
 237                 .name           = "homefs",
 238                 .offset         = MTDPART_OFS_APPEND,
 239                 .size           = MTDPART_SIZ_FULL,
 240                 .mask_flags     = 0,
 241         },
 242 };
 243
 244 static struct davinci_nand_pdata mityomapl138_nandflash_data = {
 245         .parts          = mityomapl138_nandflash_partition,
 246         .nr_parts       = ARRAY_SIZE(mityomapl138_nandflash_partition),
 247         .ecc_mode       = NAND_ECC_HW,
 248         .options        = NAND_USE_FLASH_BBT | NAND_BUSWIDTH_16,
 249         .ecc_bits       = 1, /* 4 bit mode is not supported with 16 bit NAND */
 250 };
 251
 252 static struct resource mityomapl138_nandflash_resource[] = {
 253         {
 254                 .start  = DA8XX_AEMIF_CS3_BASE,
 255                 .end    = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
 256                 .flags  = IORESOURCE_MEM,
 257         },
 258         {
 259                 .start  = DA8XX_AEMIF_CTL_BASE,
 260                 .end    = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
 261                 .flags  = IORESOURCE_MEM,
 262         },
 263 };
 264
 265 static struct platform_device mityomapl138_nandflash_device = {
 266         .name           = "davinci_nand",
 267         .id             = 0,
 268         .dev            = {
 269                 .platform_data  = &mityomapl138_nandflash_data,
 270         },
 271         .num_resources  = ARRAY_SIZE(mityomapl138_nandflash_resource),
 272         .resource       = mityomapl138_nandflash_resource,
 273 };
 274
 275 static struct platform_device *mityomapl138_devices[] __initdata = {
 276         &mityomapl138_nandflash_device,
 277 };
 278
 279 static void __init mityomapl138_setup_nand(void)
 280 {
 281         platform_add_devices(mityomapl138_devices,
 282                                  ARRAY_SIZE(mityomapl138_devices));
 283 }
 284
 285 static struct davinci_uart_config mityomapl138_uart_config __initdata = {
 286         .enabled_uarts = 0x7,
 287 };
 288
 289 static const short mityomap_mii_pins[] = {
 290         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
 291         DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
 292         DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
 293         DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
 294         DA850_MDIO_D,
 295         -1
 296 };
 297
 298 static const short mityomap_rmii_pins[] = {
 299         DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
 300         DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
 301         DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
 302         DA850_MDIO_D,
 303         -1
 304 };
 305
 306 static void __init mityomapl138_config_emac(void)
 307 {
 308         void __iomem *cfg_chip3_base;
 309         int ret;
 310         u32 val;
 311         struct davinci_soc_info *soc_info = &davinci_soc_info;
 312
 313         soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
 314
 315         cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
 316         val = __raw_readl(cfg_chip3_base);
 317
 318         if (soc_info->emac_pdata->rmii_en) {
 319                 val |= BIT(8);
 320                 ret = davinci_cfg_reg_list(mityomap_rmii_pins);
 321                 pr_info("RMII PHY configured\n");
 322         } else {
 323                 val &= ~BIT(8);
 324                 ret = davinci_cfg_reg_list(mityomap_mii_pins);
 325                 pr_info("MII PHY configured\n");
 326         }
 327
 328         if (ret) {
 329                 pr_warning("mii/rmii mux setup failed: %d\n", ret);
 330                 return;
 331         }
 332
 333         /* configure the CFGCHIP3 register for RMII or MII */
 334         __raw_writel(val, cfg_chip3_base);
 335
 336         soc_info->emac_pdata->phy_id = MITYOMAPL138_PHY_ID;
 337
 338         ret = da8xx_register_emac();
 339         if (ret)
 340                 pr_warning("emac registration failed: %d\n", ret);
 341 }
 342
 343 static struct davinci_pm_config da850_pm_pdata = {
 344         .sleepcount = 128,
 345 };
 346
 347 static struct platform_device da850_pm_device = {
 348         .name   = "pm-davinci",
 349         .dev = {
 350                 .platform_data  = &da850_pm_pdata,
 351         },
 352         .id     = -1,
 353 };
 354
 355 static void __init mityomapl138_init(void)
 356 {
 357         int ret;
 358
 359         /* for now, no special EDMA channels are reserved */
 360         ret = da850_register_edma(NULL);
 361         if (ret)
 362                 pr_warning("edma registration failed: %d\n", ret);
 363
 364         ret = da8xx_register_watchdog();
 365         if (ret)
 366                 pr_warning("watchdog registration failed: %d\n", ret);
 367
 368         davinci_serial_init(&mityomapl138_uart_config);
 369
 370         ret = da8xx_register_i2c(0, &mityomap_i2c_0_pdata);
 371         if (ret)
 372                 pr_warning("i2c0 registration failed: %d\n", ret);
 373
 374         ret = pmic_tps65023_init();
 375         if (ret)
 376                 pr_warning("TPS65023 PMIC init failed: %d\n", ret);
 377
 378         mityomapl138_setup_nand();
 379
 380         mityomapl138_config_emac();
 381
 382         ret = da8xx_register_rtc();
 383         if (ret)
 384                 pr_warning("rtc setup failed: %d\n", ret);
 385
 386         ret = da850_register_cpufreq("pll0_sysclk3");
 387         if (ret)
 388                 pr_warning("cpufreq registration failed: %d\n", ret);
 389
 390         ret = da8xx_register_cpuidle();
 391         if (ret)
 392                 pr_warning("cpuidle registration failed: %d\n", ret);
 393
 394         ret = da850_register_pm(&da850_pm_device);
 395         if (ret)
 396                 pr_warning("da850_evm_init: suspend registration failed: %d\n",
 397                                 ret);
 398 }
 399
 400 #ifdef CONFIG_SERIAL_8250_CONSOLE
 401 static int __init mityomapl138_console_init(void)
 402 {
 403         if (!machine_is_mityomapl138())
 404                 return 0;
 405
 406         return add_preferred_console("ttyS", 1, "115200");
 407 }
 408 console_initcall(mityomapl138_console_init);
 409 #endif
 410
 411 static void __init mityomapl138_map_io(void)
 412 {
 413         da850_init();
 414 }
 415
 416 MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
 417         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 418         .map_io         = mityomapl138_map_io,
 419         .init_irq       = cp_intc_init,
 420         .timer          = &davinci_timer,
 421         .init_machine   = mityomapl138_init,
 422 MACHINE_END