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