board/overo/overo.c

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