drivers/mmc/omap_hsmmc.c

   1 /*
   2  * (C) Copyright 2008
   3  * Texas Instruments, <www.ti.com>
   4  * Sukumar Ghorai <s-ghorai@ti.com>
   5  *
   6  * See file CREDITS for list of people who contributed to this
   7  * project.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation's version 2 of
  12  * the License.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  22  * MA 02111-1307 USA
  23  */
  24
  25 #include <config.h>
  26 #include <common.h>
  27 #include <mmc.h>
  28 #include <part.h>
  29 #include <i2c.h>
  30 #include <twl4030.h>
  31 #include <twl6030.h>
  32 #include <twl6035.h>
  33 #include <asm/io.h>
  34 #include <asm/arch/mmc_host_def.h>
  35 #include <asm/arch/sys_proto.h>
  36
  37 /* common definitions for all OMAPs */
  38 #define SYSCTL_SRC      (1 << 25)
  39 #define SYSCTL_SRD      (1 << 26)
  40
  41 /* If we fail after 1 second wait, something is really bad */
  42 #define MAX_RETRY_MS    1000
  43
  44 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
  45 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
  46                         unsigned int siz);
  47 static struct mmc hsmmc_dev[2];
  48
  49 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
  50 static void omap4_vmmc_pbias_config(struct mmc *mmc)
  51 {
  52         u32 value = 0;
  53         struct omap_sys_ctrl_regs *const ctrl =
  54                 (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
  55
  56
  57         value = readl(&ctrl->control_pbiaslite);
  58         value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
  59         writel(value, &ctrl->control_pbiaslite);
  60         /* set VMMC to 3V */
  61         twl6030_power_mmc_init();
  62         value = readl(&ctrl->control_pbiaslite);
  63         value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
  64         writel(value, &ctrl->control_pbiaslite);
  65 }
  66 #endif
  67
  68 #if defined(CONFIG_OMAP54XX) && defined(CONFIG_TWL6035_POWER)
  69 static void omap5_pbias_config(struct mmc *mmc)
  70 {
  71         u32 value = 0;
  72         struct omap_sys_ctrl_regs *const ctrl =
  73                 (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE;
  74
  75         value = readl(&ctrl->control_pbias);
  76         value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
  77         value |= SDCARD_BIAS_HIZ_MODE;
  78         writel(value, &ctrl->control_pbias);
  79
  80         twl6035_mmc1_poweron_ldo();
  81
  82         value = readl(&ctrl->control_pbias);
  83         value &= ~SDCARD_BIAS_HIZ_MODE;
  84         value |= SDCARD_PBIASLITE_VMODE | SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ;
  85         writel(value, &ctrl->control_pbias);
  86
  87         value = readl(&ctrl->control_pbias);
  88         if (value & (1 << 23)) {
  89                 value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ);
  90                 value |= SDCARD_BIAS_HIZ_MODE;
  91                 writel(value, &ctrl->control_pbias);
  92         }
  93 }
  94 #endif
  95
  96 unsigned char mmc_board_init(struct mmc *mmc)
  97 {
  98 #if defined(CONFIG_OMAP34XX)
  99         t2_t *t2_base = (t2_t *)T2_BASE;
 100         struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
 101         u32 pbias_lite;
 102
 103         pbias_lite = readl(&t2_base->pbias_lite);
 104         pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
 105         writel(pbias_lite, &t2_base->pbias_lite);
 106 #endif
 107 #if defined(CONFIG_TWL4030_POWER)
 108         twl4030_power_mmc_init();
 109         mdelay(100);    /* ramp-up delay from Linux code */
 110 #endif
 111 #if defined(CONFIG_OMAP34XX)
 112         writel(pbias_lite | PBIASLITEPWRDNZ1 |
 113                 PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
 114                 &t2_base->pbias_lite);
 115
 116         writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
 117                 &t2_base->devconf0);
 118
 119         writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
 120                 &t2_base->devconf1);
 121
 122         /* Change from default of 52MHz to 26MHz if necessary */
 123         if (!(mmc->host_caps & MMC_MODE_HS_52MHz))
 124                 writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
 125                         &t2_base->ctl_prog_io1);
 126
 127         writel(readl(&prcm_base->fclken1_core) |
 128                 EN_MMC1 | EN_MMC2 | EN_MMC3,
 129                 &prcm_base->fclken1_core);
 130
 131         writel(readl(&prcm_base->iclken1_core) |
 132                 EN_MMC1 | EN_MMC2 | EN_MMC3,
 133                 &prcm_base->iclken1_core);
 134 #endif
 135
 136 #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
 137         /* PBIAS config needed for MMC1 only */
 138         if (mmc->block_dev.dev == 0)
 139                 omap4_vmmc_pbias_config(mmc);
 140 #endif
 141 #if defined(CONFIG_OMAP54XX) && defined(CONFIG_TWL6035_POWER)
 142         if (mmc->block_dev.dev == 0)
 143                 omap5_pbias_config(mmc);
 144 #endif
 145
 146         return 0;
 147 }
 148
 149 void mmc_init_stream(struct hsmmc *mmc_base)
 150 {
 151         ulong start;
 152
 153         writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
 154
 155         writel(MMC_CMD0, &mmc_base->cmd);
 156         start = get_timer(0);
 157         while (!(readl(&mmc_base->stat) & CC_MASK)) {
 158                 if (get_timer(0) - start > MAX_RETRY_MS) {
 159                         printf("%s: timedout waiting for cc!\n", __func__);
 160                         return;
 161                 }
 162         }
 163         writel(CC_MASK, &mmc_base->stat)
 164                 ;
 165         writel(MMC_CMD0, &mmc_base->cmd)
 166                 ;
 167         start = get_timer(0);
 168         while (!(readl(&mmc_base->stat) & CC_MASK)) {
 169                 if (get_timer(0) - start > MAX_RETRY_MS) {
 170                         printf("%s: timedout waiting for cc2!\n", __func__);
 171                         return;
 172                 }
 173         }
 174         writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
 175 }
 176
 177
 178 static int mmc_init_setup(struct mmc *mmc)
 179 {
 180         struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv;
 181         unsigned int reg_val;
 182         unsigned int dsor;
 183         ulong start;
 184
 185         mmc_board_init(mmc);
 186
 187         writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
 188                 &mmc_base->sysconfig);
 189         start = get_timer(0);
 190         while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
 191                 if (get_timer(0) - start > MAX_RETRY_MS) {
 192                         printf("%s: timedout waiting for cc2!\n", __func__);
 193                         return TIMEOUT;
 194                 }
 195         }
 196         writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
 197         start = get_timer(0);
 198         while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
 199                 if (get_timer(0) - start > MAX_RETRY_MS) {
 200                         printf("%s: timedout waiting for softresetall!\n",
 201                                 __func__);
 202                         return TIMEOUT;
 203                 }
 204         }
 205         writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
 206         writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
 207                 &mmc_base->capa);
 208
 209         reg_val = readl(&mmc_base->con) & RESERVED_MASK;
 210
 211         writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
 212                 MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
 213                 HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
 214
 215         dsor = 240;
 216         mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
 217                 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
 218         mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
 219                 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
 220         start = get_timer(0);
 221         while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
 222                 if (get_timer(0) - start > MAX_RETRY_MS) {
 223                         printf("%s: timedout waiting for ics!\n", __func__);
 224                         return TIMEOUT;
 225                 }
 226         }
 227         writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
 228
 229         writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
 230
 231         writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
 232                 IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
 233                 &mmc_base->ie);
 234
 235         mmc_init_stream(mmc_base);
 236
 237         return 0;
 238 }
 239
 240 /*
 241  * MMC controller internal finite state machine reset
 242  *
 243  * Used to reset command or data internal state machines, using respectively
 244  * SRC or SRD bit of SYSCTL register
 245  */
 246 static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
 247 {
 248         ulong start;
 249
 250         mmc_reg_out(&mmc_base->sysctl, bit, bit);
 251
 252         start = get_timer(0);
 253         while ((readl(&mmc_base->sysctl) & bit) != 0) {
 254                 if (get_timer(0) - start > MAX_RETRY_MS) {
 255                         printf("%s: timedout waiting for sysctl %x to clear\n",
 256                                 __func__, bit);
 257                         return;
 258                 }
 259         }
 260 }
 261
 262 static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
 263                         struct mmc_data *data)
 264 {
 265         struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv;
 266         unsigned int flags, mmc_stat;
 267         ulong start;
 268
 269         start = get_timer(0);
 270         while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
 271                 if (get_timer(0) - start > MAX_RETRY_MS) {
 272                         printf("%s: timedout waiting on cmd inhibit to clear\n",
 273                                         __func__);
 274                         return TIMEOUT;
 275                 }
 276         }
 277         writel(0xFFFFFFFF, &mmc_base->stat);
 278         start = get_timer(0);
 279         while (readl(&mmc_base->stat)) {
 280                 if (get_timer(0) - start > MAX_RETRY_MS) {
 281                         printf("%s: timedout waiting for STAT (%x) to clear\n",
 282                                 __func__, readl(&mmc_base->stat));
 283                         return TIMEOUT;
 284                 }
 285         }
 286         /*
 287          * CMDREG
 288          * CMDIDX[13:8] : Command index
 289          * DATAPRNT[5]  : Data Present Select
 290          * ENCMDIDX[4]  : Command Index Check Enable
 291          * ENCMDCRC[3]  : Command CRC Check Enable
 292          * RSPTYP[1:0]
 293          *      00 = No Response
 294          *      01 = Length 136
 295          *      10 = Length 48
 296          *      11 = Length 48 Check busy after response
 297          */
 298         /* Delay added before checking the status of frq change
 299          * retry not supported by mmc.c(core file)
 300          */
 301         if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
 302                 udelay(50000); /* wait 50 ms */
 303
 304         if (!(cmd->resp_type & MMC_RSP_PRESENT))
 305                 flags = 0;
 306         else if (cmd->resp_type & MMC_RSP_136)
 307                 flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
 308         else if (cmd->resp_type & MMC_RSP_BUSY)
 309                 flags = RSP_TYPE_LGHT48B;
 310         else
 311                 flags = RSP_TYPE_LGHT48;
 312
 313         /* enable default flags */
 314         flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
 315                         MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE);
 316
 317         if (cmd->resp_type & MMC_RSP_CRC)
 318                 flags |= CCCE_CHECK;
 319         if (cmd->resp_type & MMC_RSP_OPCODE)
 320                 flags |= CICE_CHECK;
 321
 322         if (data) {
 323                 if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
 324                          (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
 325                         flags |= (MSBS_MULTIBLK | BCE_ENABLE);
 326                         data->blocksize = 512;
 327                         writel(data->blocksize | (data->blocks << 16),
 328                                                         &mmc_base->blk);
 329                 } else
 330                         writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
 331
 332                 if (data->flags & MMC_DATA_READ)
 333                         flags |= (DP_DATA | DDIR_READ);
 334                 else
 335                         flags |= (DP_DATA | DDIR_WRITE);
 336         }
 337
 338         writel(cmd->cmdarg, &mmc_base->arg);
 339         writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
 340
 341         start = get_timer(0);
 342         do {
 343                 mmc_stat = readl(&mmc_base->stat);
 344                 if (get_timer(0) - start > MAX_RETRY_MS) {
 345                         printf("%s : timeout: No status update\n", __func__);
 346                         return TIMEOUT;
 347                 }
 348         } while (!mmc_stat);
 349
 350         if ((mmc_stat & IE_CTO) != 0) {
 351                 mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
 352                 return TIMEOUT;
 353         } else if ((mmc_stat & ERRI_MASK) != 0)
 354                 return -1;
 355
 356         if (mmc_stat & CC_MASK) {
 357                 writel(CC_MASK, &mmc_base->stat);
 358                 if (cmd->resp_type & MMC_RSP_PRESENT) {
 359                         if (cmd->resp_type & MMC_RSP_136) {
 360                                 /* response type 2 */
 361                                 cmd->response[3] = readl(&mmc_base->rsp10);
 362                                 cmd->response[2] = readl(&mmc_base->rsp32);
 363                                 cmd->response[1] = readl(&mmc_base->rsp54);
 364                                 cmd->response[0] = readl(&mmc_base->rsp76);
 365                         } else
 366                                 /* response types 1, 1b, 3, 4, 5, 6 */
 367                                 cmd->response[0] = readl(&mmc_base->rsp10);
 368                 }
 369         }
 370
 371         if (data && (data->flags & MMC_DATA_READ)) {
 372                 mmc_read_data(mmc_base, data->dest,
 373                                 data->blocksize * data->blocks);
 374         } else if (data && (data->flags & MMC_DATA_WRITE)) {
 375                 mmc_write_data(mmc_base, data->src,
 376                                 data->blocksize * data->blocks);
 377         }
 378         return 0;
 379 }
 380
 381 static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
 382 {
 383         unsigned int *output_buf = (unsigned int *)buf;
 384         unsigned int mmc_stat;
 385         unsigned int count;
 386
 387         /*
 388          * Start Polled Read
 389          */
 390         count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
 391         count /= 4;
 392
 393         while (size) {
 394                 ulong start = get_timer(0);
 395                 do {
 396                         mmc_stat = readl(&mmc_base->stat);
 397                         if (get_timer(0) - start > MAX_RETRY_MS) {
 398                                 printf("%s: timedout waiting for status!\n",
 399                                                 __func__);
 400                                 return TIMEOUT;
 401                         }
 402                 } while (mmc_stat == 0);
 403
 404                 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
 405                         mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
 406
 407                 if ((mmc_stat & ERRI_MASK) != 0)
 408                         return 1;
 409
 410                 if (mmc_stat & BRR_MASK) {
 411                         unsigned int k;
 412
 413                         writel(readl(&mmc_base->stat) | BRR_MASK,
 414                                 &mmc_base->stat);
 415                         for (k = 0; k < count; k++) {
 416                                 *output_buf = readl(&mmc_base->data);
 417                                 output_buf++;
 418                         }
 419                         size -= (count*4);
 420                 }
 421
 422                 if (mmc_stat & BWR_MASK)
 423                         writel(readl(&mmc_base->stat) | BWR_MASK,
 424                                 &mmc_base->stat);
 425
 426                 if (mmc_stat & TC_MASK) {
 427                         writel(readl(&mmc_base->stat) | TC_MASK,
 428                                 &mmc_base->stat);
 429                         break;
 430                 }
 431         }
 432         return 0;
 433 }
 434
 435 static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
 436                                 unsigned int size)
 437 {
 438         unsigned int *input_buf = (unsigned int *)buf;
 439         unsigned int mmc_stat;
 440         unsigned int count;
 441
 442         /*
 443          * Start Polled Read
 444          */
 445         count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
 446         count /= 4;
 447
 448         while (size) {
 449                 ulong start = get_timer(0);
 450                 do {
 451                         mmc_stat = readl(&mmc_base->stat);
 452                         if (get_timer(0) - start > MAX_RETRY_MS) {
 453                                 printf("%s: timedout waiting for status!\n",
 454                                                 __func__);
 455                                 return TIMEOUT;
 456                         }
 457                 } while (mmc_stat == 0);
 458
 459                 if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
 460                         mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
 461
 462                 if ((mmc_stat & ERRI_MASK) != 0)
 463                         return 1;
 464
 465                 if (mmc_stat & BWR_MASK) {
 466                         unsigned int k;
 467
 468                         writel(readl(&mmc_base->stat) | BWR_MASK,
 469                                         &mmc_base->stat);
 470                         for (k = 0; k < count; k++) {
 471                                 writel(*input_buf, &mmc_base->data);
 472                                 input_buf++;
 473                         }
 474                         size -= (count*4);
 475                 }
 476
 477                 if (mmc_stat & BRR_MASK)
 478                         writel(readl(&mmc_base->stat) | BRR_MASK,
 479                                 &mmc_base->stat);
 480
 481                 if (mmc_stat & TC_MASK) {
 482                         writel(readl(&mmc_base->stat) | TC_MASK,
 483                                 &mmc_base->stat);
 484                         break;
 485                 }
 486         }
 487         return 0;
 488 }
 489
 490 static void mmc_set_ios(struct mmc *mmc)
 491 {
 492         struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv;
 493         unsigned int dsor = 0;
 494         ulong start;
 495
 496         /* configue bus width */
 497         switch (mmc->bus_width) {
 498         case 8:
 499                 writel(readl(&mmc_base->con) | DTW_8_BITMODE,
 500                         &mmc_base->con);
 501                 break;
 502
 503         case 4:
 504                 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
 505                         &mmc_base->con);
 506                 writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
 507                         &mmc_base->hctl);
 508                 break;
 509
 510         case 1:
 511         default:
 512                 writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
 513                         &mmc_base->con);
 514                 writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
 515                         &mmc_base->hctl);
 516                 break;
 517         }
 518
 519         /* configure clock with 96Mhz system clock.
 520          */
 521         if (mmc->clock != 0) {
 522                 dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock);
 523                 if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock)
 524                         dsor++;
 525         }
 526
 527         mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
 528                                 (ICE_STOP | DTO_15THDTO | CEN_DISABLE));
 529
 530         mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
 531                                 (dsor << CLKD_OFFSET) | ICE_OSCILLATE);
 532
 533         start = get_timer(0);
 534         while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
 535                 if (get_timer(0) - start > MAX_RETRY_MS) {
 536                         printf("%s: timedout waiting for ics!\n", __func__);
 537                         return;
 538                 }
 539         }
 540         writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
 541 }
 542
 543 int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max)
 544 {
 545         struct mmc *mmc;
 546
 547         mmc = &hsmmc_dev[dev_index];
 548
 549         sprintf(mmc->name, "OMAP SD/MMC");
 550         mmc->send_cmd = mmc_send_cmd;
 551         mmc->set_ios = mmc_set_ios;
 552         mmc->init = mmc_init_setup;
 553         mmc->getcd = NULL;
 554
 555         switch (dev_index) {
 556         case 0:
 557                 mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE;
 558                 break;
 559 #ifdef OMAP_HSMMC2_BASE
 560         case 1:
 561                 mmc->priv = (struct hsmmc *)OMAP_HSMMC2_BASE;
 562                 break;
 563 #endif
 564 #ifdef OMAP_HSMMC3_BASE
 565         case 2:
 566                 mmc->priv = (struct hsmmc *)OMAP_HSMMC3_BASE;
 567                 break;
 568 #endif
 569         default:
 570                 mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE;
 571                 return 1;
 572         }
 573         mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
 574         mmc->host_caps = (MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
 575                                 MMC_MODE_HC) & ~host_caps_mask;
 576
 577         mmc->f_min = 400000;
 578
 579         if (f_max != 0)
 580                 mmc->f_max = f_max;
 581         else {
 582                 if (mmc->host_caps & MMC_MODE_HS) {
 583                         if (mmc->host_caps & MMC_MODE_HS_52MHz)
 584                                 mmc->f_max = 52000000;
 585                         else
 586                                 mmc->f_max = 26000000;
 587                 } else
 588                         mmc->f_max = 20000000;
 589         }
 590
 591         mmc->b_max = 0;
 592
 593 #if defined(CONFIG_OMAP34XX)
 594         /*
 595          * Silicon revs 2.1 and older do not support multiblock transfers.
 596          */
 597         if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
 598                 mmc->b_max = 1;
 599 #endif
 600
 601         mmc_register(mmc);
 602
 603         return 0;
 604 }