board/ti/am335x/board.c

   1 /*
   2  * board.c
   3  *
   4  * Board functions for TI AM335X based boards
   5  *
   6  * Copyright (C) 2011, Texas Instruments, Incorporated - http://www.ti.com/
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <common.h>
  20 #include <errno.h>
  21 #include <spl.h>
  22 #include <asm/arch/cpu.h>
  23 #include <asm/arch/hardware.h>
  24 #include <asm/arch/omap.h>
  25 #include <asm/arch/ddr_defs.h>
  26 #include <asm/arch/clock.h>
  27 #include <asm/arch/gpio.h>
  28 #include <asm/arch/mmc_host_def.h>
  29 #include <asm/arch/sys_proto.h>
  30 #include <asm/io.h>
  31 #include <asm/emif.h>
  32 #include <asm/gpio.h>
  33 #include <i2c.h>
  34 #include <miiphy.h>
  35 #include <cpsw.h>
  36 #include "board.h"
  37
  38 DECLARE_GLOBAL_DATA_PTR;
  39
  40 static struct wd_timer *wdtimer = (struct wd_timer *)WDT_BASE;
  41
  42 /* MII mode defines */
  43 #define MII_MODE_ENABLE         0x0
  44 #define RGMII_MODE_ENABLE       0x3A
  45
  46 /* GPIO that controls power to DDR on EVM-SK */
  47 #define GPIO_DDR_VTT_EN         7
  48
  49 static struct ctrl_dev *cdev = (struct ctrl_dev *)CTRL_DEVICE_BASE;
  50
  51 static struct am335x_baseboard_id __attribute__((section (".data"))) header;
  52
  53 static inline int board_is_bone(void)
  54 {
  55         return !strncmp(header.name, "A335BONE", HDR_NAME_LEN);
  56 }
  57
  58 static inline int board_is_bone_lt(void)
  59 {
  60         return !strncmp(header.name, "A335BNLT", HDR_NAME_LEN);
  61 }
  62
  63 static inline int board_is_evm_sk(void)
  64 {
  65         return !strncmp("A335X_SK", header.name, HDR_NAME_LEN);
  66 }
  67
  68 static inline int board_is_idk(void)
  69 {
  70         return !strncmp(header.config, "SKU#02", 6);
  71 }
  72
  73 static int __maybe_unused board_is_gp_evm(void)
  74 {
  75         return !strncmp("A33515BB", header.name, 8);
  76 }
  77
  78 int board_is_evm_15_or_later(void)
  79 {
  80         return (!strncmp("A33515BB", header.name, 8) &&
  81                 strncmp("1.5", header.version, 3) <= 0);
  82 }
  83
  84 /*
  85  * Read header information from EEPROM into global structure.
  86  */
  87 static int read_eeprom(void)
  88 {
  89         /* Check if baseboard eeprom is available */
  90         if (i2c_probe(CONFIG_SYS_I2C_EEPROM_ADDR)) {
  91                 puts("Could not probe the EEPROM; something fundamentally "
  92                         "wrong on the I2C bus.\n");
  93                 return -ENODEV;
  94         }
  95
  96         /* read the eeprom using i2c */
  97         if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 2, (uchar *)&header,
  98                                                         sizeof(header))) {
  99                 puts("Could not read the EEPROM; something fundamentally"
 100                         " wrong on the I2C bus.\n");
 101                 return -EIO;
 102         }
 103
 104         if (header.magic != 0xEE3355AA) {
 105                 /*
 106                  * read the eeprom using i2c again,
 107                  * but use only a 1 byte address
 108                  */
 109                 if (i2c_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, 1,
 110                                         (uchar *)&header, sizeof(header))) {
 111                         puts("Could not read the EEPROM; something "
 112                                 "fundamentally wrong on the I2C bus.\n");
 113                         return -EIO;
 114                 }
 115
 116                 if (header.magic != 0xEE3355AA) {
 117                         printf("Incorrect magic number (0x%x) in EEPROM\n",
 118                                         header.magic);
 119                         return -EINVAL;
 120                 }
 121         }
 122
 123         return 0;
 124 }
 125
 126 #ifdef CONFIG_SPL_BUILD
 127 static const struct ddr_data ddr2_data = {
 128         .datardsratio0 = ((MT47H128M16RT25E_RD_DQS<<30) |
 129                           (MT47H128M16RT25E_RD_DQS<<20) |
 130                           (MT47H128M16RT25E_RD_DQS<<10) |
 131                           (MT47H128M16RT25E_RD_DQS<<0)),
 132         .datawdsratio0 = ((MT47H128M16RT25E_WR_DQS<<30) |
 133                           (MT47H128M16RT25E_WR_DQS<<20) |
 134                           (MT47H128M16RT25E_WR_DQS<<10) |
 135                           (MT47H128M16RT25E_WR_DQS<<0)),
 136         .datawiratio0 = ((MT47H128M16RT25E_PHY_WRLVL<<30) |
 137                          (MT47H128M16RT25E_PHY_WRLVL<<20) |
 138                          (MT47H128M16RT25E_PHY_WRLVL<<10) |
 139                          (MT47H128M16RT25E_PHY_WRLVL<<0)),
 140         .datagiratio0 = ((MT47H128M16RT25E_PHY_GATELVL<<30) |
 141                          (MT47H128M16RT25E_PHY_GATELVL<<20) |
 142                          (MT47H128M16RT25E_PHY_GATELVL<<10) |
 143                          (MT47H128M16RT25E_PHY_GATELVL<<0)),
 144         .datafwsratio0 = ((MT47H128M16RT25E_PHY_FIFO_WE<<30) |
 145                           (MT47H128M16RT25E_PHY_FIFO_WE<<20) |
 146                           (MT47H128M16RT25E_PHY_FIFO_WE<<10) |
 147                           (MT47H128M16RT25E_PHY_FIFO_WE<<0)),
 148         .datawrsratio0 = ((MT47H128M16RT25E_PHY_WR_DATA<<30) |
 149                           (MT47H128M16RT25E_PHY_WR_DATA<<20) |
 150                           (MT47H128M16RT25E_PHY_WR_DATA<<10) |
 151                           (MT47H128M16RT25E_PHY_WR_DATA<<0)),
 152         .datauserank0delay = MT47H128M16RT25E_PHY_RANK0_DELAY,
 153         .datadldiff0 = PHY_DLL_LOCK_DIFF,
 154 };
 155
 156 static const struct cmd_control ddr2_cmd_ctrl_data = {
 157         .cmd0csratio = MT47H128M16RT25E_RATIO,
 158         .cmd0dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
 159         .cmd0iclkout = MT47H128M16RT25E_INVERT_CLKOUT,
 160
 161         .cmd1csratio = MT47H128M16RT25E_RATIO,
 162         .cmd1dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
 163         .cmd1iclkout = MT47H128M16RT25E_INVERT_CLKOUT,
 164
 165         .cmd2csratio = MT47H128M16RT25E_RATIO,
 166         .cmd2dldiff = MT47H128M16RT25E_DLL_LOCK_DIFF,
 167         .cmd2iclkout = MT47H128M16RT25E_INVERT_CLKOUT,
 168 };
 169
 170 static const struct emif_regs ddr2_emif_reg_data = {
 171         .sdram_config = MT47H128M16RT25E_EMIF_SDCFG,
 172         .ref_ctrl = MT47H128M16RT25E_EMIF_SDREF,
 173         .sdram_tim1 = MT47H128M16RT25E_EMIF_TIM1,
 174         .sdram_tim2 = MT47H128M16RT25E_EMIF_TIM2,
 175         .sdram_tim3 = MT47H128M16RT25E_EMIF_TIM3,
 176         .emif_ddr_phy_ctlr_1 = MT47H128M16RT25E_EMIF_READ_LATENCY,
 177 };
 178
 179 static const struct ddr_data ddr3_data = {
 180         .datardsratio0 = MT41J128MJT125_RD_DQS,
 181         .datawdsratio0 = MT41J128MJT125_WR_DQS,
 182         .datafwsratio0 = MT41J128MJT125_PHY_FIFO_WE,
 183         .datawrsratio0 = MT41J128MJT125_PHY_WR_DATA,
 184         .datadldiff0 = PHY_DLL_LOCK_DIFF,
 185 };
 186
 187 static const struct ddr_data ddr3_beagleblack_data = {
 188         .datardsratio0 = MT41K256M16HA125E_RD_DQS,
 189         .datawdsratio0 = MT41K256M16HA125E_WR_DQS,
 190         .datafwsratio0 = MT41K256M16HA125E_PHY_FIFO_WE,
 191         .datawrsratio0 = MT41K256M16HA125E_PHY_WR_DATA,
 192         .datadldiff0 = PHY_DLL_LOCK_DIFF,
 193 };
 194
 195 static const struct ddr_data ddr3_evm_data = {
 196         .datardsratio0 = MT41J512M8RH125_RD_DQS,
 197         .datawdsratio0 = MT41J512M8RH125_WR_DQS,
 198         .datafwsratio0 = MT41J512M8RH125_PHY_FIFO_WE,
 199         .datawrsratio0 = MT41J512M8RH125_PHY_WR_DATA,
 200         .datadldiff0 = PHY_DLL_LOCK_DIFF,
 201 };
 202
 203 static const struct cmd_control ddr3_cmd_ctrl_data = {
 204         .cmd0csratio = MT41J128MJT125_RATIO,
 205         .cmd0dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
 206         .cmd0iclkout = MT41J128MJT125_INVERT_CLKOUT,
 207
 208         .cmd1csratio = MT41J128MJT125_RATIO,
 209         .cmd1dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
 210         .cmd1iclkout = MT41J128MJT125_INVERT_CLKOUT,
 211
 212         .cmd2csratio = MT41J128MJT125_RATIO,
 213         .cmd2dldiff = MT41J128MJT125_DLL_LOCK_DIFF,
 214         .cmd2iclkout = MT41J128MJT125_INVERT_CLKOUT,
 215 };
 216
 217 static const struct cmd_control ddr3_beagleblack_cmd_ctrl_data = {
 218         .cmd0csratio = MT41K256M16HA125E_RATIO,
 219         .cmd0dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
 220         .cmd0iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
 221
 222         .cmd1csratio = MT41K256M16HA125E_RATIO,
 223         .cmd1dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
 224         .cmd1iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
 225
 226         .cmd2csratio = MT41K256M16HA125E_RATIO,
 227         .cmd2dldiff = MT41K256M16HA125E_DLL_LOCK_DIFF,
 228         .cmd2iclkout = MT41K256M16HA125E_INVERT_CLKOUT,
 229 };
 230
 231 static const struct cmd_control ddr3_evm_cmd_ctrl_data = {
 232         .cmd0csratio = MT41J512M8RH125_RATIO,
 233         .cmd0dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
 234         .cmd0iclkout = MT41J512M8RH125_INVERT_CLKOUT,
 235
 236         .cmd1csratio = MT41J512M8RH125_RATIO,
 237         .cmd1dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
 238         .cmd1iclkout = MT41J512M8RH125_INVERT_CLKOUT,
 239
 240         .cmd2csratio = MT41J512M8RH125_RATIO,
 241         .cmd2dldiff = MT41J512M8RH125_DLL_LOCK_DIFF,
 242         .cmd2iclkout = MT41J512M8RH125_INVERT_CLKOUT,
 243 };
 244
 245 static struct emif_regs ddr3_emif_reg_data = {
 246         .sdram_config = MT41J128MJT125_EMIF_SDCFG,
 247         .ref_ctrl = MT41J128MJT125_EMIF_SDREF,
 248         .sdram_tim1 = MT41J128MJT125_EMIF_TIM1,
 249         .sdram_tim2 = MT41J128MJT125_EMIF_TIM2,
 250         .sdram_tim3 = MT41J128MJT125_EMIF_TIM3,
 251         .zq_config = MT41J128MJT125_ZQ_CFG,
 252         .emif_ddr_phy_ctlr_1 = MT41J128MJT125_EMIF_READ_LATENCY |
 253                                 PHY_EN_DYN_PWRDN,
 254 };
 255
 256 static struct emif_regs ddr3_beagleblack_emif_reg_data = {
 257         .sdram_config = MT41K256M16HA125E_EMIF_SDCFG,
 258         .ref_ctrl = MT41K256M16HA125E_EMIF_SDREF,
 259         .sdram_tim1 = MT41K256M16HA125E_EMIF_TIM1,
 260         .sdram_tim2 = MT41K256M16HA125E_EMIF_TIM2,
 261         .sdram_tim3 = MT41K256M16HA125E_EMIF_TIM3,
 262         .zq_config = MT41K256M16HA125E_ZQ_CFG,
 263         .emif_ddr_phy_ctlr_1 = MT41K256M16HA125E_EMIF_READ_LATENCY,
 264 };
 265
 266 static struct emif_regs ddr3_evm_emif_reg_data = {
 267         .sdram_config = MT41J512M8RH125_EMIF_SDCFG,
 268         .ref_ctrl = MT41J512M8RH125_EMIF_SDREF,
 269         .sdram_tim1 = MT41J512M8RH125_EMIF_TIM1,
 270         .sdram_tim2 = MT41J512M8RH125_EMIF_TIM2,
 271         .sdram_tim3 = MT41J512M8RH125_EMIF_TIM3,
 272         .zq_config = MT41J512M8RH125_ZQ_CFG,
 273         .emif_ddr_phy_ctlr_1 = MT41J512M8RH125_EMIF_READ_LATENCY |
 274                                 PHY_EN_DYN_PWRDN,
 275 };
 276 #endif
 277
 278 /*
 279  * early system init of muxing and clocks.
 280  */
 281 void s_init(void)
 282 {
 283         /*
 284          * Save the boot parameters passed from romcode.
 285          * We cannot delay the saving further than this,
 286          * to prevent overwrites.
 287          */
 288 #ifdef CONFIG_SPL_BUILD
 289         save_omap_boot_params();
 290 #endif
 291
 292         /* WDT1 is already running when the bootloader gets control
 293          * Disable it to avoid "random" resets
 294          */
 295         writel(0xAAAA, &wdtimer->wdtwspr);
 296         while (readl(&wdtimer->wdtwwps) != 0x0)
 297                 ;
 298         writel(0x5555, &wdtimer->wdtwspr);
 299         while (readl(&wdtimer->wdtwwps) != 0x0)
 300                 ;
 301
 302 #ifdef CONFIG_SPL_BUILD
 303         /* Setup the PLLs and the clocks for the peripherals */
 304         pll_init();
 305
 306         /* Enable RTC32K clock */
 307         rtc32k_enable();
 308
 309 #ifdef CONFIG_SERIAL1
 310         enable_uart0_pin_mux();
 311 #endif /* CONFIG_SERIAL1 */
 312 #ifdef CONFIG_SERIAL2
 313         enable_uart1_pin_mux();
 314 #endif /* CONFIG_SERIAL2 */
 315 #ifdef CONFIG_SERIAL3
 316         enable_uart2_pin_mux();
 317 #endif /* CONFIG_SERIAL3 */
 318 #ifdef CONFIG_SERIAL4
 319         enable_uart3_pin_mux();
 320 #endif /* CONFIG_SERIAL4 */
 321 #ifdef CONFIG_SERIAL5
 322         enable_uart4_pin_mux();
 323 #endif /* CONFIG_SERIAL5 */
 324 #ifdef CONFIG_SERIAL6
 325         enable_uart5_pin_mux();
 326 #endif /* CONFIG_SERIAL6 */
 327
 328         uart_soft_reset();
 329
 330         gd = &gdata;
 331
 332         preloader_console_init();
 333
 334         /* Initalize the board header */
 335         enable_i2c0_pin_mux();
 336         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 337         if (read_eeprom() < 0)
 338                 puts("Could not get board ID.\n");
 339
 340         enable_board_pin_mux(&header);
 341         if (board_is_evm_sk()) {
 342                 /*
 343                  * EVM SK 1.2A and later use gpio0_7 to enable DDR3.
 344                  * This is safe enough to do on older revs.
 345                  */
 346                 gpio_request(GPIO_DDR_VTT_EN, "ddr_vtt_en");
 347                 gpio_direction_output(GPIO_DDR_VTT_EN, 1);
 348         }
 349
 350         if (board_is_evm_sk())
 351                 config_ddr(303, MT41J128MJT125_IOCTRL_VALUE, &ddr3_data,
 352                            &ddr3_cmd_ctrl_data, &ddr3_emif_reg_data, 0);
 353         else if (board_is_bone_lt())
 354                 config_ddr(400, MT41K256M16HA125E_IOCTRL_VALUE,
 355                            &ddr3_beagleblack_data,
 356                            &ddr3_beagleblack_cmd_ctrl_data,
 357                            &ddr3_beagleblack_emif_reg_data, 0);
 358         else if (board_is_evm_15_or_later())
 359                 config_ddr(303, MT41J512M8RH125_IOCTRL_VALUE, &ddr3_evm_data,
 360                            &ddr3_evm_cmd_ctrl_data, &ddr3_evm_emif_reg_data, 0);
 361         else
 362                 config_ddr(266, MT47H128M16RT25E_IOCTRL_VALUE, &ddr2_data,
 363                            &ddr2_cmd_ctrl_data, &ddr2_emif_reg_data, 0);
 364 #endif
 365 }
 366
 367 /*
 368  * Basic board specific setup.  Pinmux has been handled already.
 369  */
 370 int board_init(void)
 371 {
 372         i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
 373         if (read_eeprom() < 0)
 374                 puts("Could not get board ID.\n");
 375
 376         gd->bd->bi_boot_params = PHYS_DRAM_1 + 0x100;
 377
 378         gpmc_init();
 379
 380         return 0;
 381 }
 382
 383 #ifdef CONFIG_BOARD_LATE_INIT
 384 int board_late_init(void)
 385 {
 386 #ifdef CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG
 387         char safe_string[HDR_NAME_LEN + 1];
 388
 389         /* Now set variables based on the header. */
 390         strncpy(safe_string, (char *)header.name, sizeof(header.name));
 391         safe_string[sizeof(header.name)] = 0;
 392         setenv("board_name", safe_string);
 393
 394         strncpy(safe_string, (char *)header.version, sizeof(header.version));
 395         safe_string[sizeof(header.version)] = 0;
 396         setenv("board_rev", safe_string);
 397 #endif
 398
 399         return 0;
 400 }
 401 #endif
 402
 403 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 404         (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 405 static void cpsw_control(int enabled)
 406 {
 407         /* VTP can be added here */
 408
 409         return;
 410 }
 411
 412 static struct cpsw_slave_data cpsw_slaves[] = {
 413         {
 414                 .slave_reg_ofs  = 0x208,
 415                 .sliver_reg_ofs = 0xd80,
 416                 .phy_id         = 0,
 417         },
 418         {
 419                 .slave_reg_ofs  = 0x308,
 420                 .sliver_reg_ofs = 0xdc0,
 421                 .phy_id         = 1,
 422         },
 423 };
 424
 425 static struct cpsw_platform_data cpsw_data = {
 426         .mdio_base              = CPSW_MDIO_BASE,
 427         .cpsw_base              = CPSW_BASE,
 428         .mdio_div               = 0xff,
 429         .channels               = 8,
 430         .cpdma_reg_ofs          = 0x800,
 431         .slaves                 = 1,
 432         .slave_data             = cpsw_slaves,
 433         .ale_reg_ofs            = 0xd00,
 434         .ale_entries            = 1024,
 435         .host_port_reg_ofs      = 0x108,
 436         .hw_stats_reg_ofs       = 0x900,
 437         .mac_control            = (1 << 5),
 438         .control                = cpsw_control,
 439         .host_port_num          = 0,
 440         .version                = CPSW_CTRL_VERSION_2,
 441 };
 442 #endif
 443
 444 #if defined(CONFIG_DRIVER_TI_CPSW) || \
 445         (defined(CONFIG_USB_ETHER) && defined(CONFIG_MUSB_GADGET))
 446 int board_eth_init(bd_t *bis)
 447 {
 448         int rv, n = 0;
 449         uint8_t mac_addr[6];
 450         uint32_t mac_hi, mac_lo;
 451
 452         /* try reading mac address from efuse */
 453         mac_lo = readl(&cdev->macid0l);
 454         mac_hi = readl(&cdev->macid0h);
 455         mac_addr[0] = mac_hi & 0xFF;
 456         mac_addr[1] = (mac_hi & 0xFF00) >> 8;
 457         mac_addr[2] = (mac_hi & 0xFF0000) >> 16;
 458         mac_addr[3] = (mac_hi & 0xFF000000) >> 24;
 459         mac_addr[4] = mac_lo & 0xFF;
 460         mac_addr[5] = (mac_lo & 0xFF00) >> 8;
 461
 462 #if (defined(CONFIG_DRIVER_TI_CPSW) && !defined(CONFIG_SPL_BUILD)) || \
 463         (defined(CONFIG_SPL_ETH_SUPPORT) && defined(CONFIG_SPL_BUILD))
 464         if (!getenv("ethaddr")) {
 465                 printf("<ethaddr> not set. Validating first E-fuse MAC\n");
 466
 467                 if (is_valid_ether_addr(mac_addr))
 468                         eth_setenv_enetaddr("ethaddr", mac_addr);
 469         }
 470
 471 #ifdef CONFIG_DRIVER_TI_CPSW
 472         if (board_is_bone() || board_is_bone_lt() || board_is_idk()) {
 473                 writel(MII_MODE_ENABLE, &cdev->miisel);
 474                 cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
 475                                 PHY_INTERFACE_MODE_MII;
 476         } else {
 477                 writel(RGMII_MODE_ENABLE, &cdev->miisel);
 478                 cpsw_slaves[0].phy_if = cpsw_slaves[1].phy_if =
 479                                 PHY_INTERFACE_MODE_RGMII;
 480         }
 481
 482         rv = cpsw_register(&cpsw_data);
 483         if (rv < 0)
 484                 printf("Error %d registering CPSW switch\n", rv);
 485         else
 486                 n += rv;
 487 #endif
 488
 489         /*
 490          *
 491          * CPSW RGMII Internal Delay Mode is not supported in all PVT
 492          * operating points.  So we must set the TX clock delay feature
 493          * in the AR8051 PHY.  Since we only support a single ethernet
 494          * device in U-Boot, we only do this for the first instance.
 495          */
 496 #define AR8051_PHY_DEBUG_ADDR_REG       0x1d
 497 #define AR8051_PHY_DEBUG_DATA_REG       0x1e
 498 #define AR8051_DEBUG_RGMII_CLK_DLY_REG  0x5
 499 #define AR8051_RGMII_TX_CLK_DLY         0x100
 500
 501         if (board_is_evm_sk() || board_is_gp_evm()) {
 502                 const char *devname;
 503                 devname = miiphy_get_current_dev();
 504
 505                 miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_ADDR_REG,
 506                                 AR8051_DEBUG_RGMII_CLK_DLY_REG);
 507                 miiphy_write(devname, 0x0, AR8051_PHY_DEBUG_DATA_REG,
 508                                 AR8051_RGMII_TX_CLK_DLY);
 509         }
 510 #endif
 511 #if defined(CONFIG_USB_ETHER) && \
 512         (!defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_USBETH_SUPPORT))
 513         if (is_valid_ether_addr(mac_addr))
 514                 eth_setenv_enetaddr("usbnet_devaddr", mac_addr);
 515
 516         rv = usb_eth_initialize(bis);
 517         if (rv < 0)
 518                 printf("Error %d registering USB_ETHER\n", rv);
 519         else
 520                 n += rv;
 521 #endif
 522         return n;
 523 }
 524 #endif