drivers/mmc/sdhci.c

   1 /*
   2  * Copyright 2011, Marvell Semiconductor Inc.
   3  * Lei Wen <leiwen@marvell.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  *
   7  * Back ported to the 8xx platform (from the 8260 platform) by
   8  * Murray.Jensen@cmst.csiro.au, 27-Jan-01.
   9  */
  10
  11 #include <common.h>
  12 #include <errno.h>
  13 #include <malloc.h>
  14 #include <mmc.h>
  15 #include <sdhci.h>
  16
  17 #if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
  18 void *aligned_buffer = (void *)CONFIG_FIXED_SDHCI_ALIGNED_BUFFER;
  19 #else
  20 void *aligned_buffer;
  21 #endif
  22
  23 static void sdhci_reset(struct sdhci_host *host, u8 mask)
  24 {
  25         unsigned long timeout;
  26
  27         /* Wait max 100 ms */
  28         timeout = 100;
  29         sdhci_writeb(host, mask, SDHCI_SOFTWARE_RESET);
  30         while (sdhci_readb(host, SDHCI_SOFTWARE_RESET) & mask) {
  31                 if (timeout == 0) {
  32                         printf("%s: Reset 0x%x never completed.\n",
  33                                __func__, (int)mask);
  34                         return;
  35                 }
  36                 timeout--;
  37                 udelay(1000);
  38         }
  39 }
  40
  41 static void sdhci_cmd_done(struct sdhci_host *host, struct mmc_cmd *cmd)
  42 {
  43         int i;
  44         if (cmd->resp_type & MMC_RSP_136) {
  45                 /* CRC is stripped so we need to do some shifting. */
  46                 for (i = 0; i < 4; i++) {
  47                         cmd->response[i] = sdhci_readl(host,
  48                                         SDHCI_RESPONSE + (3-i)*4) << 8;
  49                         if (i != 3)
  50                                 cmd->response[i] |= sdhci_readb(host,
  51                                                 SDHCI_RESPONSE + (3-i)*4-1);
  52                 }
  53         } else {
  54                 cmd->response[0] = sdhci_readl(host, SDHCI_RESPONSE);
  55         }
  56 }
  57
  58 static void sdhci_transfer_pio(struct sdhci_host *host, struct mmc_data *data)
  59 {
  60         int i;
  61         char *offs;
  62         for (i = 0; i < data->blocksize; i += 4) {
  63                 offs = data->dest + i;
  64                 if (data->flags == MMC_DATA_READ)
  65                         *(u32 *)offs = sdhci_readl(host, SDHCI_BUFFER);
  66                 else
  67                         sdhci_writel(host, *(u32 *)offs, SDHCI_BUFFER);
  68         }
  69 }
  70
  71 static int sdhci_transfer_data(struct sdhci_host *host, struct mmc_data *data,
  72                                 unsigned int start_addr)
  73 {
  74         unsigned int stat, rdy, mask, timeout, block = 0;
  75         bool transfer_done = false;
  76 #ifdef CONFIG_MMC_SDHCI_SDMA
  77         unsigned char ctrl;
  78         ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
  79         ctrl &= ~SDHCI_CTRL_DMA_MASK;
  80         sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
  81 #endif
  82
  83         timeout = 1000000;
  84         rdy = SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DATA_AVAIL;
  85         mask = SDHCI_DATA_AVAILABLE | SDHCI_SPACE_AVAILABLE;
  86         do {
  87                 stat = sdhci_readl(host, SDHCI_INT_STATUS);
  88                 if (stat & SDHCI_INT_ERROR) {
  89                         printf("%s: Error detected in status(0x%X)!\n",
  90                                __func__, stat);
  91                         return -EIO;
  92                 }
  93                 if (!transfer_done && (stat & rdy)) {
  94                         if (!(sdhci_readl(host, SDHCI_PRESENT_STATE) & mask))
  95                                 continue;
  96                         sdhci_writel(host, rdy, SDHCI_INT_STATUS);
  97                         sdhci_transfer_pio(host, data);
  98                         data->dest += data->blocksize;
  99                         if (++block >= data->blocks) {
 100                                 /* Keep looping until the SDHCI_INT_DATA_END is
 101                                  * cleared, even if we finished sending all the
 102                                  * blocks.
 103                                  */
 104                                 transfer_done = true;
 105                                 continue;
 106                         }
 107                 }
 108 #ifdef CONFIG_MMC_SDHCI_SDMA
 109                 if (!transfer_done && (stat & SDHCI_INT_DMA_END)) {
 110                         sdhci_writel(host, SDHCI_INT_DMA_END, SDHCI_INT_STATUS);
 111                         start_addr &= ~(SDHCI_DEFAULT_BOUNDARY_SIZE - 1);
 112                         start_addr += SDHCI_DEFAULT_BOUNDARY_SIZE;
 113                         sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
 114                 }
 115 #endif
 116                 if (timeout-- > 0)
 117                         udelay(10);
 118                 else {
 119                         printf("%s: Transfer data timeout\n", __func__);
 120                         return -ETIMEDOUT;
 121                 }
 122         } while (!(stat & SDHCI_INT_DATA_END));
 123         return 0;
 124 }
 125
 126 /*
 127  * No command will be sent by driver if card is busy, so driver must wait
 128  * for card ready state.
 129  * Every time when card is busy after timeout then (last) timeout value will be
 130  * increased twice but only if it doesn't exceed global defined maximum.
 131  * Each function call will use last timeout value.
 132  */
 133 #define SDHCI_CMD_MAX_TIMEOUT                   3200
 134 #define SDHCI_CMD_DEFAULT_TIMEOUT               100
 135 #define SDHCI_READ_STATUS_TIMEOUT               1000
 136
 137 #ifdef CONFIG_DM_MMC_OPS
 138 static int sdhci_send_command(struct udevice *dev, struct mmc_cmd *cmd,
 139                               struct mmc_data *data)
 140 {
 141         struct mmc *mmc = mmc_get_mmc_dev(dev);
 142
 143 #else
 144 static int sdhci_send_command(struct mmc *mmc, struct mmc_cmd *cmd,
 145                               struct mmc_data *data)
 146 {
 147 #endif
 148         struct sdhci_host *host = mmc->priv;
 149         unsigned int stat = 0;
 150         int ret = 0;
 151         int trans_bytes = 0, is_aligned = 1;
 152         u32 mask, flags, mode;
 153         unsigned int time = 0, start_addr = 0;
 154         int mmc_dev = mmc_get_blk_desc(mmc)->devnum;
 155         unsigned start = get_timer(0);
 156
 157         /* Timeout unit - ms */
 158         static unsigned int cmd_timeout = SDHCI_CMD_DEFAULT_TIMEOUT;
 159
 160         sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);
 161         mask = SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT;
 162
 163         /* We shouldn't wait for data inihibit for stop commands, even
 164            though they might use busy signaling */
 165         if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
 166                 mask &= ~SDHCI_DATA_INHIBIT;
 167
 168         while (sdhci_readl(host, SDHCI_PRESENT_STATE) & mask) {
 169                 if (time >= cmd_timeout) {
 170                         printf("%s: MMC: %d busy ", __func__, mmc_dev);
 171                         if (2 * cmd_timeout <= SDHCI_CMD_MAX_TIMEOUT) {
 172                                 cmd_timeout += cmd_timeout;
 173                                 printf("timeout increasing to: %u ms.\n",
 174                                        cmd_timeout);
 175                         } else {
 176                                 puts("timeout.\n");
 177                                 return -ECOMM;
 178                         }
 179                 }
 180                 time++;
 181                 udelay(1000);
 182         }
 183
 184         mask = SDHCI_INT_RESPONSE;
 185         if (!(cmd->resp_type & MMC_RSP_PRESENT))
 186                 flags = SDHCI_CMD_RESP_NONE;
 187         else if (cmd->resp_type & MMC_RSP_136)
 188                 flags = SDHCI_CMD_RESP_LONG;
 189         else if (cmd->resp_type & MMC_RSP_BUSY) {
 190                 flags = SDHCI_CMD_RESP_SHORT_BUSY;
 191                 if (data)
 192                         mask |= SDHCI_INT_DATA_END;
 193         } else
 194                 flags = SDHCI_CMD_RESP_SHORT;
 195
 196         if (cmd->resp_type & MMC_RSP_CRC)
 197                 flags |= SDHCI_CMD_CRC;
 198         if (cmd->resp_type & MMC_RSP_OPCODE)
 199                 flags |= SDHCI_CMD_INDEX;
 200         if (data)
 201                 flags |= SDHCI_CMD_DATA;
 202
 203         /* Set Transfer mode regarding to data flag */
 204         if (data != 0) {
 205                 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
 206                 mode = SDHCI_TRNS_BLK_CNT_EN;
 207                 trans_bytes = data->blocks * data->blocksize;
 208                 if (data->blocks > 1)
 209                         mode |= SDHCI_TRNS_MULTI;
 210
 211                 if (data->flags == MMC_DATA_READ)
 212                         mode |= SDHCI_TRNS_READ;
 213
 214 #ifdef CONFIG_MMC_SDHCI_SDMA
 215                 if (data->flags == MMC_DATA_READ)
 216                         start_addr = (unsigned long)data->dest;
 217                 else
 218                         start_addr = (unsigned long)data->src;
 219                 if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
 220                                 (start_addr & 0x7) != 0x0) {
 221                         is_aligned = 0;
 222                         start_addr = (unsigned long)aligned_buffer;
 223                         if (data->flags != MMC_DATA_READ)
 224                                 memcpy(aligned_buffer, data->src, trans_bytes);
 225                 }
 226
 227 #if defined(CONFIG_FIXED_SDHCI_ALIGNED_BUFFER)
 228                 /*
 229                  * Always use this bounce-buffer when
 230                  * CONFIG_FIXED_SDHCI_ALIGNED_BUFFER is defined
 231                  */
 232                 is_aligned = 0;
 233                 start_addr = (unsigned long)aligned_buffer;
 234                 if (data->flags != MMC_DATA_READ)
 235                         memcpy(aligned_buffer, data->src, trans_bytes);
 236 #endif
 237
 238                 sdhci_writel(host, start_addr, SDHCI_DMA_ADDRESS);
 239                 mode |= SDHCI_TRNS_DMA;
 240 #endif
 241                 sdhci_writew(host, SDHCI_MAKE_BLKSZ(SDHCI_DEFAULT_BOUNDARY_ARG,
 242                                 data->blocksize),
 243                                 SDHCI_BLOCK_SIZE);
 244                 sdhci_writew(host, data->blocks, SDHCI_BLOCK_COUNT);
 245                 sdhci_writew(host, mode, SDHCI_TRANSFER_MODE);
 246         } else if (cmd->resp_type & MMC_RSP_BUSY) {
 247                 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
 248         }
 249
 250         sdhci_writel(host, cmd->cmdarg, SDHCI_ARGUMENT);
 251 #ifdef CONFIG_MMC_SDHCI_SDMA
 252         if (data != 0) {
 253                 trans_bytes = ALIGN(trans_bytes, CONFIG_SYS_CACHELINE_SIZE);
 254                 flush_cache(start_addr, trans_bytes);
 255         }
 256 #endif
 257         sdhci_writew(host, SDHCI_MAKE_CMD(cmd->cmdidx, flags), SDHCI_COMMAND);
 258         start = get_timer(0);
 259         do {
 260                 stat = sdhci_readl(host, SDHCI_INT_STATUS);
 261                 if (stat & SDHCI_INT_ERROR)
 262                         break;
 263
 264                 if (get_timer(start) >= SDHCI_READ_STATUS_TIMEOUT) {
 265                         if (host->quirks & SDHCI_QUIRK_BROKEN_R1B) {
 266                                 return 0;
 267                         } else {
 268                                 printf("%s: Timeout for status update!\n",
 269                                        __func__);
 270                                 return -ETIMEDOUT;
 271                         }
 272                 }
 273         } while ((stat & mask) != mask);
 274
 275         if ((stat & (SDHCI_INT_ERROR | mask)) == mask) {
 276                 sdhci_cmd_done(host, cmd);
 277                 sdhci_writel(host, mask, SDHCI_INT_STATUS);
 278         } else
 279                 ret = -1;
 280
 281         if (!ret && data)
 282                 ret = sdhci_transfer_data(host, data, start_addr);
 283
 284         if (host->quirks & SDHCI_QUIRK_WAIT_SEND_CMD)
 285                 udelay(1000);
 286
 287         stat = sdhci_readl(host, SDHCI_INT_STATUS);
 288         sdhci_writel(host, SDHCI_INT_ALL_MASK, SDHCI_INT_STATUS);
 289         if (!ret) {
 290                 if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) &&
 291                                 !is_aligned && (data->flags == MMC_DATA_READ))
 292                         memcpy(data->dest, aligned_buffer, trans_bytes);
 293                 return 0;
 294         }
 295
 296         sdhci_reset(host, SDHCI_RESET_CMD);
 297         sdhci_reset(host, SDHCI_RESET_DATA);
 298         if (stat & SDHCI_INT_TIMEOUT)
 299                 return -ETIMEDOUT;
 300         else
 301                 return -ECOMM;
 302 }
 303
 304 static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
 305 {
 306         struct sdhci_host *host = mmc->priv;
 307         unsigned int div, clk = 0, timeout;
 308
 309         /* Wait max 20 ms */
 310         timeout = 200;
 311         while (sdhci_readl(host, SDHCI_PRESENT_STATE) &
 312                            (SDHCI_CMD_INHIBIT | SDHCI_DATA_INHIBIT)) {
 313                 if (timeout == 0) {
 314                         printf("%s: Timeout to wait cmd & data inhibit\n",
 315                                __func__);
 316                         return -EBUSY;
 317                 }
 318
 319                 timeout--;
 320                 udelay(100);
 321         }
 322
 323         sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
 324
 325         if (clock == 0)
 326                 return 0;
 327
 328         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 329                 /*
 330                  * Check if the Host Controller supports Programmable Clock
 331                  * Mode.
 332                  */
 333                 if (host->clk_mul) {
 334                         for (div = 1; div <= 1024; div++) {
 335                                 if ((host->max_clk * host->clk_mul / div)
 336                                         <= clock)
 337                                         break;
 338                         }
 339
 340                         /*
 341                          * Set Programmable Clock Mode in the Clock
 342                          * Control register.
 343                          */
 344                         clk = SDHCI_PROG_CLOCK_MODE;
 345                         div--;
 346                 } else {
 347                         /* Version 3.00 divisors must be a multiple of 2. */
 348                         if (host->max_clk <= clock) {
 349                                 div = 1;
 350                         } else {
 351                                 for (div = 2;
 352                                      div < SDHCI_MAX_DIV_SPEC_300;
 353                                      div += 2) {
 354                                         if ((host->max_clk / div) <= clock)
 355                                                 break;
 356                                 }
 357                         }
 358                         div >>= 1;
 359                 }
 360         } else {
 361                 /* Version 2.00 divisors must be a power of 2. */
 362                 for (div = 1; div < SDHCI_MAX_DIV_SPEC_200; div *= 2) {
 363                         if ((host->max_clk / div) <= clock)
 364                                 break;
 365                 }
 366                 div >>= 1;
 367         }
 368
 369         if (host->ops && host->ops->set_clock)
 370                 host->ops->set_clock(host, div);
 371
 372         clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
 373         clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
 374                 << SDHCI_DIVIDER_HI_SHIFT;
 375         clk |= SDHCI_CLOCK_INT_EN;
 376         sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 377
 378         /* Wait max 20 ms */
 379         timeout = 20;
 380         while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
 381                 & SDHCI_CLOCK_INT_STABLE)) {
 382                 if (timeout == 0) {
 383                         printf("%s: Internal clock never stabilised.\n",
 384                                __func__);
 385                         return -EBUSY;
 386                 }
 387                 timeout--;
 388                 udelay(1000);
 389         }
 390
 391         clk |= SDHCI_CLOCK_CARD_EN;
 392         sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
 393         return 0;
 394 }
 395
 396 static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
 397 {
 398         u8 pwr = 0;
 399
 400         if (power != (unsigned short)-1) {
 401                 switch (1 << power) {
 402                 case MMC_VDD_165_195:
 403                         pwr = SDHCI_POWER_180;
 404                         break;
 405                 case MMC_VDD_29_30:
 406                 case MMC_VDD_30_31:
 407                         pwr = SDHCI_POWER_300;
 408                         break;
 409                 case MMC_VDD_32_33:
 410                 case MMC_VDD_33_34:
 411                         pwr = SDHCI_POWER_330;
 412                         break;
 413                 }
 414         }
 415
 416         if (pwr == 0) {
 417                 sdhci_writeb(host, 0, SDHCI_POWER_CONTROL);
 418                 return;
 419         }
 420
 421         pwr |= SDHCI_POWER_ON;
 422
 423         sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
 424 }
 425
 426 #ifdef CONFIG_DM_MMC_OPS
 427 static int sdhci_set_ios(struct udevice *dev)
 428 {
 429         struct mmc *mmc = mmc_get_mmc_dev(dev);
 430 #else
 431 static int sdhci_set_ios(struct mmc *mmc)
 432 {
 433 #endif
 434         u32 ctrl;
 435         struct sdhci_host *host = mmc->priv;
 436
 437         if (host->ops && host->ops->set_control_reg)
 438                 host->ops->set_control_reg(host);
 439
 440         if (mmc->clock != host->clock)
 441                 sdhci_set_clock(mmc, mmc->clock);
 442
 443         /* Set bus width */
 444         ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
 445         if (mmc->bus_width == 8) {
 446                 ctrl &= ~SDHCI_CTRL_4BITBUS;
 447                 if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
 448                                 (host->quirks & SDHCI_QUIRK_USE_WIDE8))
 449                         ctrl |= SDHCI_CTRL_8BITBUS;
 450         } else {
 451                 if ((SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) ||
 452                                 (host->quirks & SDHCI_QUIRK_USE_WIDE8))
 453                         ctrl &= ~SDHCI_CTRL_8BITBUS;
 454                 if (mmc->bus_width == 4)
 455                         ctrl |= SDHCI_CTRL_4BITBUS;
 456                 else
 457                         ctrl &= ~SDHCI_CTRL_4BITBUS;
 458         }
 459
 460         if (mmc->clock > 26000000)
 461                 ctrl |= SDHCI_CTRL_HISPD;
 462         else
 463                 ctrl &= ~SDHCI_CTRL_HISPD;
 464
 465         if (host->quirks & SDHCI_QUIRK_NO_HISPD_BIT)
 466                 ctrl &= ~SDHCI_CTRL_HISPD;
 467
 468         sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
 469
 470         /* If available, call the driver specific "post" set_ios() function */
 471         if (host->ops && host->ops->set_ios_post)
 472                 host->ops->set_ios_post(host);
 473
 474         return 0;
 475 }
 476
 477 static int sdhci_init(struct mmc *mmc)
 478 {
 479         struct sdhci_host *host = mmc->priv;
 480
 481         sdhci_reset(host, SDHCI_RESET_ALL);
 482
 483         if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !aligned_buffer) {
 484                 aligned_buffer = memalign(8, 512*1024);
 485                 if (!aligned_buffer) {
 486                         printf("%s: Aligned buffer alloc failed!!!\n",
 487                                __func__);
 488                         return -ENOMEM;
 489                 }
 490         }
 491
 492         sdhci_set_power(host, fls(mmc->cfg->voltages) - 1);
 493
 494         if (host->ops && host->ops->get_cd)
 495                 host->ops->get_cd(host);
 496
 497         /* Enable only interrupts served by the SD controller */
 498         sdhci_writel(host, SDHCI_INT_DATA_MASK | SDHCI_INT_CMD_MASK,
 499                      SDHCI_INT_ENABLE);
 500         /* Mask all sdhci interrupt sources */
 501         sdhci_writel(host, 0x0, SDHCI_SIGNAL_ENABLE);
 502
 503         return 0;
 504 }
 505
 506 #ifdef CONFIG_DM_MMC_OPS
 507 int sdhci_probe(struct udevice *dev)
 508 {
 509         struct mmc *mmc = mmc_get_mmc_dev(dev);
 510
 511         return sdhci_init(mmc);
 512 }
 513
 514 const struct dm_mmc_ops sdhci_ops = {
 515         .send_cmd       = sdhci_send_command,
 516         .set_ios        = sdhci_set_ios,
 517 };
 518 #else
 519 static const struct mmc_ops sdhci_ops = {
 520         .send_cmd       = sdhci_send_command,
 521         .set_ios        = sdhci_set_ios,
 522         .init           = sdhci_init,
 523 };
 524 #endif
 525
 526 int sdhci_setup_cfg(struct mmc_config *cfg, struct sdhci_host *host,
 527                 u32 f_max, u32 f_min)
 528 {
 529         u32 caps, caps_1;
 530
 531         caps = sdhci_readl(host, SDHCI_CAPABILITIES);
 532
 533 #ifdef CONFIG_MMC_SDHCI_SDMA
 534         if (!(caps & SDHCI_CAN_DO_SDMA)) {
 535                 printf("%s: Your controller doesn't support SDMA!!\n",
 536                        __func__);
 537                 return -EINVAL;
 538         }
 539 #endif
 540         if (host->quirks & SDHCI_QUIRK_REG32_RW)
 541                 host->version =
 542                         sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
 543         else
 544                 host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 545
 546         cfg->name = host->name;
 547 #ifndef CONFIG_DM_MMC_OPS
 548         cfg->ops = &sdhci_ops;
 549 #endif
 550         if (host->max_clk == 0) {
 551                 if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 552                         host->max_clk = (caps & SDHCI_CLOCK_V3_BASE_MASK) >>
 553                                 SDHCI_CLOCK_BASE_SHIFT;
 554                 else
 555                         host->max_clk = (caps & SDHCI_CLOCK_BASE_MASK) >>
 556                                 SDHCI_CLOCK_BASE_SHIFT;
 557                 host->max_clk *= 1000000;
 558         }
 559         if (host->max_clk == 0) {
 560                 printf("%s: Hardware doesn't specify base clock frequency\n",
 561                        __func__);
 562                 return -EINVAL;
 563         }
 564         if (f_max && (f_max < host->max_clk))
 565                 cfg->f_max = f_max;
 566         else
 567                 cfg->f_max = host->max_clk;
 568         if (f_min)
 569                 cfg->f_min = f_min;
 570         else {
 571                 if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300)
 572                         cfg->f_min = cfg->f_max / SDHCI_MAX_DIV_SPEC_300;
 573                 else
 574                         cfg->f_min = cfg->f_max / SDHCI_MAX_DIV_SPEC_200;
 575         }
 576         cfg->voltages = 0;
 577         if (caps & SDHCI_CAN_VDD_330)
 578                 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
 579         if (caps & SDHCI_CAN_VDD_300)
 580                 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
 581         if (caps & SDHCI_CAN_VDD_180)
 582                 cfg->voltages |= MMC_VDD_165_195;
 583
 584         if (host->quirks & SDHCI_QUIRK_BROKEN_VOLTAGE)
 585                 cfg->voltages |= host->voltages;
 586
 587         cfg->host_caps = MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT;
 588
 589         /* Since Host Controller Version3.0 */
 590         if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {
 591                 if (!(caps & SDHCI_CAN_DO_8BIT))
 592                         cfg->host_caps &= ~MMC_MODE_8BIT;
 593
 594                 /* Find out whether clock multiplier is supported */
 595                 caps_1 = sdhci_readl(host, SDHCI_CAPABILITIES_1);
 596                 host->clk_mul = (caps_1 & SDHCI_CLOCK_MUL_MASK) >>
 597                                 SDHCI_CLOCK_MUL_SHIFT;
 598         }
 599
 600         if (host->host_caps)
 601                 cfg->host_caps |= host->host_caps;
 602
 603         cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
 604
 605         return 0;
 606 }
 607
 608 #ifdef CONFIG_BLK
 609 int sdhci_bind(struct udevice *dev, struct mmc *mmc, struct mmc_config *cfg)
 610 {
 611         return mmc_bind(dev, mmc, cfg);
 612 }
 613 #else
 614 int add_sdhci(struct sdhci_host *host, u32 f_max, u32 f_min)
 615 {
 616         int ret;
 617
 618         ret = sdhci_setup_cfg(&host->cfg, host, f_max, f_min);
 619         if (ret)
 620                 return ret;
 621
 622         host->mmc = mmc_create(&host->cfg, host);
 623         if (host->mmc == NULL) {
 624                 printf("%s: mmc create fail!\n", __func__);
 625                 return -ENOMEM;
 626         }
 627
 628         return 0;
 629 }
 630 #endif