board/ti/beagle/beagle.c

   1 /*
   2  * (C) Copyright 2004-2011
   3  * Texas Instruments, <www.ti.com>
   4  *
   5  * Author :
   6  *      Sunil Kumar <sunilsaini05@gmail.com>
   7  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
   8  *
   9  * Derived from Beagle Board and 3430 SDP code by
  10  *      Richard Woodruff <r-woodruff2@ti.com>
  11  *      Syed Mohammed Khasim <khasim@ti.com>
  12  *
  13  *
  14  * SPDX-License-Identifier:     GPL-2.0+
  15  */
  16 #include <common.h>
  17 #ifdef CONFIG_STATUS_LED
  18 #include <status_led.h>
  19 #endif
  20 #include <twl4030.h>
  21 #include <linux/mtd/nand.h>
  22 #include <asm/io.h>
  23 #include <asm/arch/mmc_host_def.h>
  24 #include <asm/arch/mux.h>
  25 #include <asm/arch/mem.h>
  26 #include <asm/arch/sys_proto.h>
  27 #include <asm/gpio.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/omap_musb.h>
  30 #include <asm/errno.h>
  31 #include <linux/usb/ch9.h>
  32 #include <linux/usb/gadget.h>
  33 #include <linux/usb/musb.h>
  34 #include "beagle.h"
  35 #include <command.h>
  36
  37 #ifdef CONFIG_USB_EHCI
  38 #include <usb.h>
  39 #include <asm/ehci-omap.h>
  40 #endif
  41
  42 #define TWL4030_I2C_BUS                 0
  43 #define EXPANSION_EEPROM_I2C_BUS        1
  44 #define EXPANSION_EEPROM_I2C_ADDRESS    0x50
  45
  46 #define TINCANTOOLS_ZIPPY               0x01000100
  47 #define TINCANTOOLS_ZIPPY2              0x02000100
  48 #define TINCANTOOLS_TRAINER             0x04000100
  49 #define TINCANTOOLS_SHOWDOG             0x03000100
  50 #define KBADC_BEAGLEFPGA                0x01000600
  51 #define LW_BEAGLETOUCH                  0x01000700
  52 #define BRAINMUX_LCDOG                  0x01000800
  53 #define BRAINMUX_LCDOGTOUCH             0x02000800
  54 #define BBTOYS_WIFI                     0x01000B00
  55 #define BBTOYS_VGA                      0x02000B00
  56 #define BBTOYS_LCD                      0x03000B00
  57 #define BCT_BRETTL3                     0x01000F00
  58 #define BCT_BRETTL4                     0x02000F00
  59 #define LSR_COM6L_ADPT                  0x01001300
  60 #define BEAGLE_NO_EEPROM                0xffffffff
  61
  62 DECLARE_GLOBAL_DATA_PTR;
  63
  64 static struct {
  65         unsigned int device_vendor;
  66         unsigned char revision;
  67         unsigned char content;
  68         char fab_revision[8];
  69         char env_var[16];
  70         char env_setting[64];
  71 } expansion_config;
  72
  73 /*
  74  * Routine: board_init
  75  * Description: Early hardware init.
  76  */
  77 int board_init(void)
  78 {
  79         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
  80         /* board id for Linux */
  81         gd->bd->bi_arch_number = MACH_TYPE_OMAP3_BEAGLE;
  82         /* boot param addr */
  83         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
  84
  85 #if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
  86         status_led_set (STATUS_LED_BOOT, STATUS_LED_ON);
  87 #endif
  88
  89         return 0;
  90 }
  91
  92 /*
  93  * Routine: get_board_revision
  94  * Description: Detect if we are running on a Beagle revision Ax/Bx,
  95  *              C1/2/3, C4, xM Ax/Bx or xM Cx. This can be done by reading
  96  *              the level of GPIO173, GPIO172 and GPIO171. This should
  97  *              result in
  98  *              GPIO173, GPIO172, GPIO171: 1 1 1 => Ax/Bx
  99  *              GPIO173, GPIO172, GPIO171: 1 1 0 => C1/2/3
 100  *              GPIO173, GPIO172, GPIO171: 1 0 1 => C4
 101  *              GPIO173, GPIO172, GPIO171: 0 1 0 => xM Cx
 102  *              GPIO173, GPIO172, GPIO171: 0 0 0 => xM Ax/Bx
 103  */
 104 static int get_board_revision(void)
 105 {
 106         int revision;
 107
 108         if (!gpio_request(171, "") &&
 109             !gpio_request(172, "") &&
 110             !gpio_request(173, "")) {
 111
 112                 gpio_direction_input(171);
 113                 gpio_direction_input(172);
 114                 gpio_direction_input(173);
 115
 116                 revision = gpio_get_value(173) << 2 |
 117                            gpio_get_value(172) << 1 |
 118                            gpio_get_value(171);
 119         } else {
 120                 printf("Error: unable to acquire board revision GPIOs\n");
 121                 revision = -1;
 122         }
 123
 124         return revision;
 125 }
 126
 127 #ifdef CONFIG_SPL_BUILD
 128 /*
 129  * Routine: get_board_mem_timings
 130  * Description: If we use SPL then there is no x-loader nor config header
 131  * so we have to setup the DDR timings ourself on both banks.
 132  */
 133 void get_board_mem_timings(struct board_sdrc_timings *timings)
 134 {
 135         int pop_mfr, pop_id;
 136
 137         /*
 138          * We need to identify what PoP memory is on the board so that
 139          * we know what timings to use.  If we can't identify it then
 140          * we know it's an xM.  To map the ID values please see nand_ids.c
 141          */
 142         identify_nand_chip(&pop_mfr, &pop_id);
 143
 144         timings->mr = MICRON_V_MR_165;
 145         switch (get_board_revision()) {
 146         case REVISION_C4:
 147                 if (pop_mfr == NAND_MFR_STMICRO && pop_id == 0xba) {
 148                         /* 512MB DDR */
 149                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
 150                         timings->ctrla = NUMONYX_V_ACTIMA_165;
 151                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
 152                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 153                         break;
 154                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xba) {
 155                         /* Beagleboard Rev C4, 512MB Nand/256MB DDR*/
 156                         timings->mcfg = MICRON_V_MCFG_165(128 << 20);
 157                         timings->ctrla = MICRON_V_ACTIMA_165;
 158                         timings->ctrlb = MICRON_V_ACTIMB_165;
 159                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 160                         break;
 161                 } else if (pop_mfr == NAND_MFR_MICRON && pop_id == 0xbc) {
 162                         /* Beagleboard Rev C5, 256MB DDR */
 163                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
 164                         timings->ctrla = MICRON_V_ACTIMA_200;
 165                         timings->ctrlb = MICRON_V_ACTIMB_200;
 166                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 167                         break;
 168                 }
 169         case REVISION_XM_AB:
 170         case REVISION_XM_C:
 171                 if (pop_mfr == 0) {
 172                         /* 256MB DDR */
 173                         timings->mcfg = MICRON_V_MCFG_200(256 << 20);
 174                         timings->ctrla = MICRON_V_ACTIMA_200;
 175                         timings->ctrlb = MICRON_V_ACTIMB_200;
 176                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
 177                 } else {
 178                         /* 512MB DDR */
 179                         timings->mcfg = NUMONYX_V_MCFG_165(512 << 20);
 180                         timings->ctrla = NUMONYX_V_ACTIMA_165;
 181                         timings->ctrlb = NUMONYX_V_ACTIMB_165;
 182                         timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 183                 }
 184                 break;
 185         default:
 186                 /* Assume 128MB and Micron/165MHz timings to be safe */
 187                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
 188                 timings->ctrla = MICRON_V_ACTIMA_165;
 189                 timings->ctrlb = MICRON_V_ACTIMB_165;
 190                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
 191         }
 192 }
 193 #endif
 194
 195 /*
 196  * Routine: get_expansion_id
 197  * Description: This function checks for expansion board by checking I2C
 198  *              bus 1 for the availability of an AT24C01B serial EEPROM.
 199  *              returns the device_vendor field from the EEPROM
 200  */
 201 static unsigned int get_expansion_id(void)
 202 {
 203         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
 204
 205         /* return BEAGLE_NO_EEPROM if eeprom doesn't respond */
 206         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
 207                 i2c_set_bus_num(TWL4030_I2C_BUS);
 208                 return BEAGLE_NO_EEPROM;
 209         }
 210
 211         /* read configuration data */
 212         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
 213                  sizeof(expansion_config));
 214
 215         /* retry reading configuration data with 16bit addressing */
 216         if ((expansion_config.device_vendor == 0xFFFFFF00) ||
 217             (expansion_config.device_vendor == 0xFFFFFFFF)) {
 218                 printf("EEPROM is blank or 8bit addressing failed: retrying with 16bit:\n");
 219                 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 2, (u8 *)&expansion_config,
 220                          sizeof(expansion_config));
 221         }
 222
 223         i2c_set_bus_num(TWL4030_I2C_BUS);
 224
 225         return expansion_config.device_vendor;
 226 }
 227
 228 #ifdef CONFIG_VIDEO_OMAP3
 229 /*
 230  * Configure DSS to display background color on DVID
 231  * Configure VENC to display color bar on S-Video
 232  */
 233 static void beagle_display_init(void)
 234 {
 235         omap3_dss_venc_config(&venc_config_std_tv, VENC_HEIGHT, VENC_WIDTH);
 236         switch (get_board_revision()) {
 237         case REVISION_AXBX:
 238         case REVISION_CX:
 239         case REVISION_C4:
 240                 omap3_dss_panel_config(&dvid_cfg);
 241                 break;
 242         case REVISION_XM_AB:
 243         case REVISION_XM_C:
 244         default:
 245                 omap3_dss_panel_config(&dvid_cfg_xm);
 246                 break;
 247         }
 248 }
 249
 250 /*
 251  * Enable DVI power
 252  */
 253 static void beagle_dvi_pup(void)
 254 {
 255         uchar val;
 256
 257         switch (get_board_revision()) {
 258         case REVISION_AXBX:
 259         case REVISION_CX:
 260         case REVISION_C4:
 261                 gpio_request(170, "");
 262                 gpio_direction_output(170, 0);
 263                 gpio_set_value(170, 1);
 264                 break;
 265         case REVISION_XM_AB:
 266         case REVISION_XM_C:
 267         default:
 268                 #define GPIODATADIR1 (TWL4030_BASEADD_GPIO+3)
 269                 #define GPIODATAOUT1 (TWL4030_BASEADD_GPIO+6)
 270
 271                 i2c_read(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
 272                 val |= 4;
 273                 i2c_write(TWL4030_CHIP_GPIO, GPIODATADIR1, 1, &val, 1);
 274
 275                 i2c_read(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
 276                 val |= 4;
 277                 i2c_write(TWL4030_CHIP_GPIO, GPIODATAOUT1, 1, &val, 1);
 278                 break;
 279         }
 280 }
 281 #endif
 282
 283 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
 284 static struct musb_hdrc_config musb_config = {
 285         .multipoint     = 1,
 286         .dyn_fifo       = 1,
 287         .num_eps        = 16,
 288         .ram_bits       = 12,
 289 };
 290
 291 static struct omap_musb_board_data musb_board_data = {
 292         .interface_type = MUSB_INTERFACE_ULPI,
 293 };
 294
 295 static struct musb_hdrc_platform_data musb_plat = {
 296 #if defined(CONFIG_MUSB_HOST)
 297         .mode           = MUSB_HOST,
 298 #elif defined(CONFIG_MUSB_GADGET)
 299         .mode           = MUSB_PERIPHERAL,
 300 #else
 301 #error "Please define either CONFIG_MUSB_HOST or CONFIG_MUSB_GADGET"
 302 #endif
 303         .config         = &musb_config,
 304         .power          = 100,
 305         .platform_ops   = &omap2430_ops,
 306         .board_data     = &musb_board_data,
 307 };
 308 #endif
 309
 310 /*
 311  * Routine: misc_init_r
 312  * Description: Configure board specific parts
 313  */
 314 int misc_init_r(void)
 315 {
 316         struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
 317         struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
 318         struct control_prog_io *prog_io_base = (struct control_prog_io *)OMAP34XX_CTRL_BASE;
 319         bool generate_fake_mac = false;
 320
 321         /* Enable i2c2 pullup resisters */
 322         writel(~(PRG_I2C2_PULLUPRESX), &prog_io_base->io1);
 323
 324         switch (get_board_revision()) {
 325         case REVISION_AXBX:
 326                 printf("Beagle Rev Ax/Bx\n");
 327                 setenv("beaglerev", "AxBx");
 328                 break;
 329         case REVISION_CX:
 330                 printf("Beagle Rev C1/C2/C3\n");
 331                 setenv("beaglerev", "Cx");
 332                 MUX_BEAGLE_C();
 333                 break;
 334         case REVISION_C4:
 335                 printf("Beagle Rev C4\n");
 336                 setenv("beaglerev", "C4");
 337                 MUX_BEAGLE_C();
 338                 /* Set VAUX2 to 1.8V for EHCI PHY */
 339                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 340                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 341                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 342                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 343                 break;
 344         case REVISION_XM_AB:
 345                 printf("Beagle xM Rev A/B\n");
 346                 setenv("beaglerev", "xMAB");
 347                 MUX_BEAGLE_XM();
 348                 /* Set VAUX2 to 1.8V for EHCI PHY */
 349                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 350                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 351                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 352                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 353                 generate_fake_mac = true;
 354                 break;
 355         case REVISION_XM_C:
 356                 printf("Beagle xM Rev C\n");
 357                 setenv("beaglerev", "xMC");
 358                 MUX_BEAGLE_XM();
 359                 /* Set VAUX2 to 1.8V for EHCI PHY */
 360                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 361                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 362                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 363                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 364                 generate_fake_mac = true;
 365                 break;
 366         default:
 367                 printf("Beagle unknown 0x%02x\n", get_board_revision());
 368                 MUX_BEAGLE_XM();
 369                 /* Set VAUX2 to 1.8V for EHCI PHY */
 370                 twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX2_DEDICATED,
 371                                         TWL4030_PM_RECEIVER_VAUX2_VSEL_18,
 372                                         TWL4030_PM_RECEIVER_VAUX2_DEV_GRP,
 373                                         TWL4030_PM_RECEIVER_DEV_GRP_P1);
 374                 generate_fake_mac = true;
 375         }
 376
 377         switch (get_expansion_id()) {
 378         case TINCANTOOLS_ZIPPY:
 379                 printf("Recognized Tincantools Zippy board (rev %d %s)\n",
 380                         expansion_config.revision,
 381                         expansion_config.fab_revision);
 382                 MUX_TINCANTOOLS_ZIPPY();
 383                 setenv("buddy", "zippy");
 384                 break;
 385         case TINCANTOOLS_ZIPPY2:
 386                 printf("Recognized Tincantools Zippy2 board (rev %d %s)\n",
 387                         expansion_config.revision,
 388                         expansion_config.fab_revision);
 389                 MUX_TINCANTOOLS_ZIPPY();
 390                 setenv("buddy", "zippy2");
 391                 break;
 392         case TINCANTOOLS_TRAINER:
 393                 printf("Recognized Tincantools Trainer board (rev %d %s)\n",
 394                         expansion_config.revision,
 395                         expansion_config.fab_revision);
 396                 MUX_TINCANTOOLS_ZIPPY();
 397                 MUX_TINCANTOOLS_TRAINER();
 398                 setenv("buddy", "trainer");
 399                 break;
 400         case TINCANTOOLS_SHOWDOG:
 401                 printf("Recognized Tincantools Showdow board (rev %d %s)\n",
 402                         expansion_config.revision,
 403                         expansion_config.fab_revision);
 404                 /* Place holder for DSS2 definition for showdog lcd */
 405                 setenv("defaultdisplay", "showdoglcd");
 406                 setenv("buddy", "showdog");
 407                 break;
 408         case KBADC_BEAGLEFPGA:
 409                 printf("Recognized KBADC Beagle FPGA board\n");
 410                 MUX_KBADC_BEAGLEFPGA();
 411                 setenv("buddy", "beaglefpga");
 412                 break;
 413         case LW_BEAGLETOUCH:
 414                 printf("Recognized Liquidware BeagleTouch board\n");
 415                 setenv("buddy", "beagletouch");
 416                 break;
 417         case BRAINMUX_LCDOG:
 418                 printf("Recognized Brainmux LCDog board\n");
 419                 setenv("buddy", "lcdog");
 420                 break;
 421         case BRAINMUX_LCDOGTOUCH:
 422                 printf("Recognized Brainmux LCDog Touch board\n");
 423                 setenv("buddy", "lcdogtouch");
 424                 break;
 425         case BBTOYS_WIFI:
 426                 printf("Recognized BeagleBoardToys WiFi board\n");
 427                 MUX_BBTOYS_WIFI()
 428                 setenv("buddy", "bbtoys-wifi");
 429                 break;;
 430         case BBTOYS_VGA:
 431                 printf("Recognized BeagleBoardToys VGA board\n");
 432                 break;;
 433         case BBTOYS_LCD:
 434                 printf("Recognized BeagleBoardToys LCD board\n");
 435                 break;;
 436         case BCT_BRETTL3:
 437                 printf("Recognized bct electronic GmbH brettl3 board\n");
 438                 break;
 439         case BCT_BRETTL4:
 440                 printf("Recognized bct electronic GmbH brettl4 board\n");
 441                 break;
 442         case LSR_COM6L_ADPT:
 443                 printf("Recognized LSR COM6L Adapter Board\n");
 444                 MUX_BBTOYS_WIFI()
 445                 setenv("buddy", "lsr-com6l-adpt");
 446                 break;
 447         case BEAGLE_NO_EEPROM:
 448                 printf("No EEPROM on expansion board\n");
 449                 setenv("buddy", "none");
 450                 break;
 451         default:
 452                 printf("Unrecognized expansion board: %x\n",
 453                         expansion_config.device_vendor);
 454                 setenv("buddy", "unknown");
 455         }
 456
 457         if (expansion_config.content == 1)
 458                 setenv(expansion_config.env_var, expansion_config.env_setting);
 459
 460         twl4030_power_init();
 461         switch (get_board_revision()) {
 462         case REVISION_XM_AB:
 463                 twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
 464                 break;
 465         default:
 466                 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
 467                 break;
 468         }
 469
 470         /* Set GPIO states before they are made outputs */
 471         writel(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1,
 472                 &gpio6_base->setdataout);
 473         writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 474                 GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
 475
 476         /* Configure GPIOs to output */
 477         writel(~(GPIO23 | GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
 478         writel(~(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
 479                 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
 480
 481         dieid_num_r();
 482
 483 #ifdef CONFIG_VIDEO_OMAP3
 484         beagle_dvi_pup();
 485         beagle_display_init();
 486         omap3_dss_enable();
 487 #endif
 488
 489 #ifdef CONFIG_USB_MUSB_OMAP2PLUS
 490         musb_register(&musb_plat, &musb_board_data, (void *)MUSB_BASE);
 491 #endif
 492
 493         if (generate_fake_mac) {
 494                 u32 id[4];
 495
 496                 get_dieid(id);
 497                 usb_fake_mac_from_die_id(id);
 498         }
 499
 500         return 0;
 501 }
 502
 503 /*
 504  * Routine: set_muxconf_regs
 505  * Description: Setting up the configuration Mux registers specific to the
 506  *              hardware. Many pins need to be moved from protect to primary
 507  *              mode.
 508  */
 509 void set_muxconf_regs(void)
 510 {
 511         MUX_BEAGLE();
 512 }
 513
 514 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
 515 int board_mmc_init(bd_t *bis)
 516 {
 517         return omap_mmc_init(0, 0, 0, -1, -1);
 518 }
 519 #endif
 520
 521 #if defined(CONFIG_USB_EHCI) && !defined(CONFIG_SPL_BUILD)
 522 /* Call usb_stop() before starting the kernel */
 523 void show_boot_progress(int val)
 524 {
 525         if (val == BOOTSTAGE_ID_RUN_OS)
 526                 usb_stop();
 527 }
 528
 529 static struct omap_usbhs_board_data usbhs_bdata = {
 530         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
 531         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
 532         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
 533 };
 534
 535 int ehci_hcd_init(int index, enum usb_init_type init,
 536                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
 537 {
 538         return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
 539 }
 540
 541 int ehci_hcd_stop(int index)
 542 {
 543         return omap_ehci_hcd_stop();
 544 }
 545
 546 #endif /* CONFIG_USB_EHCI */
 547
 548 #if defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET)
 549 int board_eth_init(bd_t *bis)
 550 {
 551         return usb_eth_initialize(bis);
 552 }
 553 #endif