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