board/overo/overo.c

   1 /*
   2  * Maintainer : Steve Sakoman <steve@sakoman.com>
   3  *
   4  * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
   5  *      Richard Woodruff <r-woodruff2@ti.com>
   6  *      Syed Mohammed Khasim <khasim@ti.com>
   7  *      Sunil Kumar <sunilsaini05@gmail.com>
   8  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   9  *
  10  * (C) Copyright 2004-2008
  11  * Texas Instruments, <www.ti.com>
  12  *
  13  * SPDX-License-Identifier:     GPL-2.0+
  14  */
  15 #include <common.h>
  16 #include <dm.h>
  17 #include <ns16550.h>
  18 #include <netdev.h>
  19 #include <twl4030.h>
  20 #include <linux/mtd/nand.h>
  21 #include <asm/io.h>
  22 #include <asm/arch/mmc_host_def.h>
  23 #include <asm/arch/mux.h>
  24 #include <asm/arch/mem.h>
  25 #include <asm/arch/sys_proto.h>
  26 #include <asm/gpio.h>
  27 #include <asm/mach-types.h>
  28 #include "overo.h"
  29
  30 #ifdef CONFIG_USB_EHCI_HCD
  31 #include <usb.h>
  32 #include <asm/ehci-omap.h>
  33 #endif
  34
  35 DECLARE_GLOBAL_DATA_PTR;
  36
  37 #define TWL4030_I2C_BUS                 0
  38 #define EXPANSION_EEPROM_I2C_BUS        2
  39 #define EXPANSION_EEPROM_I2C_ADDRESS    0x51
  40
  41 #define GUMSTIX_EMPTY_EEPROM            0x0
  42
  43 #define GUMSTIX_SUMMIT                  0x01000200
  44 #define GUMSTIX_TOBI                    0x02000200
  45 #define GUMSTIX_TOBI_DUO                0x03000200
  46 #define GUMSTIX_PALO35                  0x04000200
  47 #define GUMSTIX_PALO43                  0x05000200
  48 #define GUMSTIX_CHESTNUT43              0x06000200
  49 #define GUMSTIX_PINTO                   0x07000200
  50 #define GUMSTIX_GALLOP43                0x08000200
  51 #define GUMSTIX_ALTO35                  0x09000200
  52 #define GUMSTIX_STAGECOACH              0x0A000200
  53 #define GUMSTIX_THUMBO                  0x0B000200
  54 #define GUMSTIX_TURTLECORE              0x0C000200
  55 #define GUMSTIX_ARBOR43C                0x0D000200
  56
  57 #define ETTUS_USRP_E                    0x01000300
  58
  59 #define GUMSTIX_NO_EEPROM               0xffffffff
  60
  61 static struct {
  62         unsigned int device_vendor;
  63         unsigned char revision;
  64         unsigned char content;
  65         char fab_revision[8];
  66         char env_var[16];
  67         char env_setting[64];
  68 } expansion_config = {0x0};
  69
  70 static const struct ns16550_platdata overo_serial = {
  71         .base = OMAP34XX_UART3,
  72         .reg_shift = 2,
  73         .clock = V_NS16550_CLK,
  74         .fcr = UART_FCR_DEFVAL,
  75 };
  76
  77 U_BOOT_DEVICE(overo_uart) = {
  78         "ns16550_serial",
  79         &overo_serial
  80 };
  81
  82 /*
  83  * Routine: get_sdio2_config
  84  * Description: Return information about the wifi module connection
  85  *              Returns 0 if the module connects though a level translator
  86  *              Returns 1 if the module connects directly
  87  */
  88 int get_sdio2_config(void)
  89 {
  90         int sdio_direct;
  91
  92         if (!gpio_request(130, "") && !gpio_request(139, "")) {
  93
  94                 gpio_direction_output(130, 0);
  95                 gpio_direction_input(139);
  96
  97                 sdio_direct = 1;
  98                 gpio_set_value(130, 0);
  99                 if (gpio_get_value(139) == 0) {
 100                         gpio_set_value(130, 1);
 101                         if (gpio_get_value(139) == 1)
 102                                 sdio_direct = 0;
 103                 }
 104
 105                 gpio_direction_input(130);
 106         } else {
 107                 puts("Error: unable to acquire sdio2 clk GPIOs\n");
 108                 sdio_direct = -1;
 109         }
 110
 111         return sdio_direct;
 112 }
 113
 114 /*
 115  * Routine: get_expansion_id
 116  * Description: This function checks for expansion board by checking I2C
 117  *              bus 2 for the availability of an AT24C01B serial EEPROM.
 118  *              returns the device_vendor field from the EEPROM
 119  */
 120 unsigned int get_expansion_id(void)
 121 {
 122         if (expansion_config.device_vendor != 0x0)
 123                 return expansion_config.device_vendor;
 124
 125         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
 126
 127         /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
 128         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
 129                 i2c_set_bus_num(TWL4030_I2C_BUS);
 130                 return GUMSTIX_NO_EEPROM;
 131         }
 132
 133         /* read configuration data */
 134         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
 135                  sizeof(expansion_config));
 136
 137         i2c_set_bus_num(TWL4030_I2C_BUS);
 138
 139         return expansion_config.device_vendor;
 140 }
 141
 142 /*
 143  * Routine: misc_init_r
 144  * Description: Configure board specific parts
 145  */
 146 int misc_init_r(void)
 147 {
 148         unsigned int expansion_id;
 149
 150         twl4030_power_init();
 151         twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 152
 153         printf("Board revision: %d\n", get_board_revision());
 154
 155         switch (get_sdio2_config()) {
 156         case 0:
 157                 puts("Tranceiver detected on mmc2\n");
 158                 MUX_OVERO_SDIO2_TRANSCEIVER();
 159                 break;
 160         case 1:
 161                 puts("Direct connection on mmc2\n");
 162                 MUX_OVERO_SDIO2_DIRECT();
 163                 break;
 164         default:
 165                 puts("Unable to detect mmc2 connection type\n");
 166         }
 167
 168         expansion_id = get_expansion_id();
 169         switch (expansion_id) {
 170         case GUMSTIX_SUMMIT:
 171                 printf("Recognized Summit expansion board (rev %d %s)\n",
 172                         expansion_config.revision,
 173                         expansion_config.fab_revision);
 174                 MUX_GUMSTIX();
 175                 setenv("defaultdisplay", "dvi");
 176                 setenv("expansionname", "summit");
 177                 break;
 178         case GUMSTIX_TOBI:
 179                 printf("Recognized Tobi expansion board (rev %d %s)\n",
 180                         expansion_config.revision,
 181                         expansion_config.fab_revision);
 182                 MUX_GUMSTIX();
 183                 setenv("defaultdisplay", "dvi");
 184                 setenv("expansionname", "tobi");
 185                 break;
 186         case GUMSTIX_TOBI_DUO:
 187                 printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
 188                         expansion_config.revision,
 189                         expansion_config.fab_revision);
 190                 MUX_GUMSTIX();
 191                 setenv("expansionname", "tobiduo");
 192                 break;
 193         case GUMSTIX_PALO35:
 194                 printf("Recognized Palo35 expansion board (rev %d %s)\n",
 195                         expansion_config.revision,
 196                         expansion_config.fab_revision);
 197                 MUX_GUMSTIX();
 198                 setenv("defaultdisplay", "lcd35");
 199                 setenv("expansionname", "palo35");
 200                 break;
 201         case GUMSTIX_PALO43:
 202                 printf("Recognized Palo43 expansion board (rev %d %s)\n",
 203                         expansion_config.revision,
 204                         expansion_config.fab_revision);
 205                 MUX_GUMSTIX();
 206                 setenv("defaultdisplay", "lcd43");
 207                 setenv("expansionname", "palo43");
 208                 break;
 209         case GUMSTIX_CHESTNUT43:
 210                 printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
 211                         expansion_config.revision,
 212                         expansion_config.fab_revision);
 213                 MUX_GUMSTIX();
 214                 setenv("defaultdisplay", "lcd43");
 215                 setenv("expansionname", "chestnut43");
 216                 break;
 217         case GUMSTIX_PINTO:
 218                 printf("Recognized Pinto expansion board (rev %d %s)\n",
 219                         expansion_config.revision,
 220                         expansion_config.fab_revision);
 221                 MUX_GUMSTIX();
 222                 break;
 223         case GUMSTIX_GALLOP43:
 224                 printf("Recognized Gallop43 expansion board (rev %d %s)\n",
 225                         expansion_config.revision,
 226                         expansion_config.fab_revision);
 227                 MUX_GUMSTIX();
 228                 setenv("defaultdisplay", "lcd43");
 229                 setenv("expansionname", "gallop43");
 230                 break;
 231         case GUMSTIX_ALTO35:
 232                 printf("Recognized Alto35 expansion board (rev %d %s)\n",
 233                         expansion_config.revision,
 234                         expansion_config.fab_revision);
 235                 MUX_GUMSTIX();
 236                 MUX_ALTO35();
 237                 setenv("defaultdisplay", "lcd35");
 238                 setenv("expansionname", "alto35");
 239                 break;
 240         case GUMSTIX_STAGECOACH:
 241                 printf("Recognized Stagecoach expansion board (rev %d %s)\n",
 242                         expansion_config.revision,
 243                         expansion_config.fab_revision);
 244                 MUX_GUMSTIX();
 245                 break;
 246         case GUMSTIX_THUMBO:
 247                 printf("Recognized Thumbo expansion board (rev %d %s)\n",
 248                         expansion_config.revision,
 249                         expansion_config.fab_revision);
 250                 MUX_GUMSTIX();
 251                 break;
 252         case GUMSTIX_TURTLECORE:
 253                 printf("Recognized Turtlecore expansion board (rev %d %s)\n",
 254                         expansion_config.revision,
 255                         expansion_config.fab_revision);
 256                 MUX_GUMSTIX();
 257                 break;
 258         case GUMSTIX_ARBOR43C:
 259                 printf("Recognized Arbor43C expansion board (rev %d %s)\n",
 260                         expansion_config.revision,
 261                         expansion_config.fab_revision);
 262                 MUX_GUMSTIX();
 263                 MUX_ARBOR43C();
 264                 setenv("defaultdisplay", "lcd43");
 265                 setenv("expansionname", "arbor43c");
 266                 break;
 267         case ETTUS_USRP_E:
 268                 printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
 269                         expansion_config.revision,
 270                         expansion_config.fab_revision);
 271                 MUX_GUMSTIX();
 272                 MUX_USRP_E();
 273                 setenv("defaultdisplay", "dvi");
 274                 break;
 275         case GUMSTIX_NO_EEPROM:
 276         case GUMSTIX_EMPTY_EEPROM:
 277                 puts("No or empty EEPROM on expansion board\n");
 278                 MUX_GUMSTIX();
 279                 setenv("expansionname", "tobi");
 280                 break;
 281         default:
 282                 printf("Unrecognized expansion board 0x%08x\n", expansion_id);
 283                 break;
 284         }
 285
 286         if (expansion_config.content == 1)
 287                 setenv(expansion_config.env_var, expansion_config.env_setting);
 288
 289         omap_die_id_display();
 290
 291         if (get_cpu_family() == CPU_OMAP34XX)
 292                 setenv("boardname", "overo");
 293         else
 294                 setenv("boardname", "overo-storm");
 295
 296         return 0;
 297 }
 298
 299 #if defined(CONFIG_CMD_NET)
 300 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */
 301 static const u32 gpmc_lan_config[] = {
 302         NET_LAN9221_GPMC_CONFIG1,
 303         NET_LAN9221_GPMC_CONFIG2,
 304         NET_LAN9221_GPMC_CONFIG3,
 305         NET_LAN9221_GPMC_CONFIG4,
 306         NET_LAN9221_GPMC_CONFIG5,
 307         NET_LAN9221_GPMC_CONFIG6,
 308         /*CONFIG7- computed as params */
 309 };
 310
 311 /*
 312  * Routine: setup_net_chip
 313  * Description: Setting up the configuration GPMC registers specific to the
 314  *            Ethernet hardware.
 315  */
 316 static void setup_net_chip(void)
 317 {
 318         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
 319
 320         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
 321         writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
 322         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
 323         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
 324         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
 325         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
 326                 &ctrl_base->gpmc_nadv_ale);
 327 }
 328
 329 /*
 330  * Routine: reset_net_chip
 331  * Description: Reset the Ethernet hardware.
 332  */
 333 static void reset_net_chip(void)
 334 {
 335         /* Make GPIO 64 as output pin and send a magic pulse through it */
 336         if (!gpio_request(64, "")) {
 337                 gpio_direction_output(64, 0);
 338                 gpio_set_value(64, 1);
 339                 udelay(1);
 340                 gpio_set_value(64, 0);
 341                 udelay(1);
 342                 gpio_set_value(64, 1);
 343         }
 344 }
 345
 346 int board_eth_init(bd_t *bis)
 347 {
 348         unsigned int expansion_id;
 349         int rc = 0;
 350
 351 #ifdef CONFIG_SMC911X
 352         expansion_id = get_expansion_id();
 353         switch (expansion_id) {
 354         case GUMSTIX_TOBI_DUO:
 355                 /* second lan chip */
 356                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
 357                                       0x2B000000, GPMC_SIZE_16M);
 358                 /* no break */
 359         case GUMSTIX_TOBI:
 360         case GUMSTIX_CHESTNUT43:
 361         case GUMSTIX_STAGECOACH:
 362         case GUMSTIX_NO_EEPROM:
 363         case GUMSTIX_EMPTY_EEPROM:
 364                 /* first lan chip */
 365                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
 366                                       0x2C000000, GPMC_SIZE_16M);
 367
 368                 setup_net_chip();
 369                 reset_net_chip();
 370
 371                 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
 372                 break;
 373         default:
 374                 break;
 375         }
 376 #endif
 377
 378         return rc;
 379 }
 380 #endif
 381
 382 #if defined(CONFIG_MMC)
 383 int board_mmc_init(bd_t *bis)
 384 {
 385         return omap_mmc_init(0, 0, 0, -1, -1);
 386 }
 387 #endif
 388
 389 #if defined(CONFIG_MMC)
 390 void board_mmc_power_init(void)
 391 {
 392         twl4030_power_mmc_init(0);
 393 }
 394 #endif
 395
 396 #if defined(CONFIG_USB_EHCI_HCD)
 397 static struct omap_usbhs_board_data usbhs_bdata = {
 398         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
 399         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 400         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
 401 };
 402
 403 #define GUMSTIX_GPIO_USBH_CPEN          168
 404 int ehci_hcd_init(int index, enum usb_init_type init,
 405                   struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 406 {
 407         /* Enable USB power */
 408         if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen"))
 409                 gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1);
 410
 411         return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 412 }
 413
 414 int ehci_hcd_stop(void)
 415 {
 416         /* Disable USB power */
 417         gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0);
 418         gpio_free(GUMSTIX_GPIO_USBH_CPEN);
 419
 420         return omap_ehci_hcd_stop();
 421 }
 422
 423 #endif /* CONFIG_USB_EHCI_HCD */