3
* Texas Instruments, <www.ti.com>
4
* Sukumar Ghorai <s-ghorai@ti.com>
6
* See file CREDITS for list of people who contributed to this
9
* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation's version 2 of
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* This program is distributed in the hope that it will be useful,
15
* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* 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,
36
#include <asm/arch/mmc_host_def.h>
37
#include <asm/arch/sys_proto.h>
39
/* simplify defines to OMAP_HSMMC_USE_GPIO */
40
#if (defined(CONFIG_OMAP_GPIO) && !defined(CONFIG_SPL_BUILD)) || \
41
(defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_GPIO_SUPPORT))
42
#define OMAP_HSMMC_USE_GPIO
44
#undef OMAP_HSMMC_USE_GPIO
47
/* common definitions for all OMAPs */
48
#define SYSCTL_SRC (1 << 25)
49
#define SYSCTL_SRD (1 << 26)
51
struct omap_hsmmc_data {
52
struct hsmmc *base_addr;
53
struct mmc_config cfg;
54
#ifdef OMAP_HSMMC_USE_GPIO
60
/* If we fail after 1 second wait, something is really bad */
61
#define MAX_RETRY_MS 1000
63
static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size);
64
static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
67
#ifdef OMAP_HSMMC_USE_GPIO
68
static int omap_mmc_setup_gpio_in(int gpio, const char *label)
70
if (!gpio_is_valid(gpio))
73
if (gpio_request(gpio, label) < 0)
76
if (gpio_direction_input(gpio) < 0)
83
#if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
84
static void omap4_vmmc_pbias_config(struct mmc *mmc)
88
value = readl((*ctrl)->control_pbiaslite);
89
value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
90
writel(value, (*ctrl)->control_pbiaslite);
92
twl6030_power_mmc_init();
93
value = readl((*ctrl)->control_pbiaslite);
94
value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
95
writel(value, (*ctrl)->control_pbiaslite);
99
#if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
100
static void omap5_pbias_config(struct mmc *mmc)
104
value = readl((*ctrl)->control_pbias);
105
value &= ~SDCARD_PWRDNZ;
106
writel(value, (*ctrl)->control_pbias);
107
udelay(10); /* wait 10 us */
108
value &= ~SDCARD_BIAS_PWRDNZ;
109
writel(value, (*ctrl)->control_pbias);
111
palmas_mmc1_poweron_ldo();
113
value = readl((*ctrl)->control_pbias);
114
value |= SDCARD_BIAS_PWRDNZ;
115
writel(value, (*ctrl)->control_pbias);
116
udelay(150); /* wait 150 us */
117
value |= SDCARD_PWRDNZ;
118
writel(value, (*ctrl)->control_pbias);
119
udelay(150); /* wait 150 us */
123
unsigned char mmc_board_init(struct mmc *mmc)
125
#if defined(CONFIG_OMAP34XX)
126
t2_t *t2_base = (t2_t *)T2_BASE;
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struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
130
pbias_lite = readl(&t2_base->pbias_lite);
131
pbias_lite &= ~(PBIASLITEPWRDNZ1 | PBIASLITEPWRDNZ0);
132
writel(pbias_lite, &t2_base->pbias_lite);
134
#if defined(CONFIG_TWL4030_POWER)
135
twl4030_power_mmc_init();
136
mdelay(100); /* ramp-up delay from Linux code */
138
#if defined(CONFIG_OMAP34XX)
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writel(pbias_lite | PBIASLITEPWRDNZ1 |
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PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0,
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&t2_base->pbias_lite);
143
writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL,
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writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL,
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/* Change from default of 52MHz to 26MHz if necessary */
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if (!(mmc->cfg->host_caps & MMC_MODE_HS_52MHz))
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writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL,
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&t2_base->ctl_prog_io1);
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writel(readl(&prcm_base->fclken1_core) |
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EN_MMC1 | EN_MMC2 | EN_MMC3,
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&prcm_base->fclken1_core);
158
writel(readl(&prcm_base->iclken1_core) |
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EN_MMC1 | EN_MMC2 | EN_MMC3,
160
&prcm_base->iclken1_core);
163
#if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
164
/* PBIAS config needed for MMC1 only */
165
if (mmc->block_dev.dev == 0)
166
omap4_vmmc_pbias_config(mmc);
168
#if defined(CONFIG_OMAP54XX) && defined(CONFIG_PALMAS_POWER)
169
if (mmc->block_dev.dev == 0)
170
omap5_pbias_config(mmc);
176
void mmc_init_stream(struct hsmmc *mmc_base)
180
writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con);
182
writel(MMC_CMD0, &mmc_base->cmd);
183
start = get_timer(0);
184
while (!(readl(&mmc_base->stat) & CC_MASK)) {
185
if (get_timer(0) - start > MAX_RETRY_MS) {
186
printf("%s: timedout waiting for cc!\n", __func__);
190
writel(CC_MASK, &mmc_base->stat)
192
writel(MMC_CMD0, &mmc_base->cmd)
194
start = get_timer(0);
195
while (!(readl(&mmc_base->stat) & CC_MASK)) {
196
if (get_timer(0) - start > MAX_RETRY_MS) {
197
printf("%s: timedout waiting for cc2!\n", __func__);
201
writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con);
205
static int omap_hsmmc_init_setup(struct mmc *mmc)
207
struct hsmmc *mmc_base;
208
unsigned int reg_val;
212
mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
215
writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
216
&mmc_base->sysconfig);
217
start = get_timer(0);
218
while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) {
219
if (get_timer(0) - start > MAX_RETRY_MS) {
220
printf("%s: timedout waiting for cc2!\n", __func__);
224
writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl);
225
start = get_timer(0);
226
while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) {
227
if (get_timer(0) - start > MAX_RETRY_MS) {
228
printf("%s: timedout waiting for softresetall!\n",
233
writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl);
234
writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP,
237
reg_val = readl(&mmc_base->con) & RESERVED_MASK;
239
writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH |
240
MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK |
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HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con);
244
mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
245
(ICE_STOP | DTO_15THDTO | CEN_DISABLE));
246
mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
247
(dsor << CLKD_OFFSET) | ICE_OSCILLATE);
248
start = get_timer(0);
249
while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
250
if (get_timer(0) - start > MAX_RETRY_MS) {
251
printf("%s: timedout waiting for ics!\n", __func__);
255
writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
257
writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl);
259
writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE |
260
IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC,
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mmc_init_stream(mmc_base);
269
* MMC controller internal finite state machine reset
271
* Used to reset command or data internal state machines, using respectively
272
* SRC or SRD bit of SYSCTL register
274
static void mmc_reset_controller_fsm(struct hsmmc *mmc_base, u32 bit)
278
mmc_reg_out(&mmc_base->sysctl, bit, bit);
281
* CMD(DAT) lines reset procedures are slightly different
282
* for OMAP3 and OMAP4(AM335x,OMAP5,DRA7xx).
283
* According to OMAP3 TRM:
284
* Set SRC(SRD) bit in MMCHS_SYSCTL register to 0x1 and wait until it
286
* According to OMAP4(AM335x,OMAP5,DRA7xx) TRMs, CMD(DATA) lines reset
287
* procedure steps must be as follows:
288
* 1. Initiate CMD(DAT) line reset by writing 0x1 to SRC(SRD) bit in
289
* MMCHS_SYSCTL register (SD_SYSCTL for AM335x).
290
* 2. Poll the SRC(SRD) bit until it is set to 0x1.
291
* 3. Wait until the SRC (SRD) bit returns to 0x0
292
* (reset procedure is completed).
294
#if defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
295
defined(CONFIG_AM33XX)
296
if (!(readl(&mmc_base->sysctl) & bit)) {
297
start = get_timer(0);
298
while (!(readl(&mmc_base->sysctl) & bit)) {
299
if (get_timer(0) - start > MAX_RETRY_MS)
304
start = get_timer(0);
305
while ((readl(&mmc_base->sysctl) & bit) != 0) {
306
if (get_timer(0) - start > MAX_RETRY_MS) {
307
printf("%s: timedout waiting for sysctl %x to clear\n",
314
static int omap_hsmmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
315
struct mmc_data *data)
317
struct hsmmc *mmc_base;
318
unsigned int flags, mmc_stat;
321
mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
322
start = get_timer(0);
323
while ((readl(&mmc_base->pstate) & (DATI_MASK | CMDI_MASK)) != 0) {
324
if (get_timer(0) - start > MAX_RETRY_MS) {
325
printf("%s: timedout waiting on cmd inhibit to clear\n",
330
writel(0xFFFFFFFF, &mmc_base->stat);
331
start = get_timer(0);
332
while (readl(&mmc_base->stat)) {
333
if (get_timer(0) - start > MAX_RETRY_MS) {
334
printf("%s: timedout waiting for STAT (%x) to clear\n",
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__func__, readl(&mmc_base->stat));
341
* CMDIDX[13:8] : Command index
342
* DATAPRNT[5] : Data Present Select
343
* ENCMDIDX[4] : Command Index Check Enable
344
* ENCMDCRC[3] : Command CRC Check Enable
349
* 11 = Length 48 Check busy after response
351
/* Delay added before checking the status of frq change
352
* retry not supported by mmc.c(core file)
354
if (cmd->cmdidx == SD_CMD_APP_SEND_SCR)
355
udelay(50000); /* wait 50 ms */
357
if (!(cmd->resp_type & MMC_RSP_PRESENT))
359
else if (cmd->resp_type & MMC_RSP_136)
360
flags = RSP_TYPE_LGHT136 | CICE_NOCHECK;
361
else if (cmd->resp_type & MMC_RSP_BUSY)
362
flags = RSP_TYPE_LGHT48B;
364
flags = RSP_TYPE_LGHT48;
366
/* enable default flags */
367
flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK |
368
MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE);
370
if (cmd->resp_type & MMC_RSP_CRC)
372
if (cmd->resp_type & MMC_RSP_OPCODE)
376
if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) ||
377
(cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) {
378
flags |= (MSBS_MULTIBLK | BCE_ENABLE);
379
data->blocksize = 512;
380
writel(data->blocksize | (data->blocks << 16),
383
writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk);
385
if (data->flags & MMC_DATA_READ)
386
flags |= (DP_DATA | DDIR_READ);
388
flags |= (DP_DATA | DDIR_WRITE);
391
writel(cmd->cmdarg, &mmc_base->arg);
392
udelay(20); /* To fix "No status update" error on eMMC */
393
writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd);
395
start = get_timer(0);
397
mmc_stat = readl(&mmc_base->stat);
398
if (get_timer(0) - start > MAX_RETRY_MS) {
399
printf("%s : timeout: No status update\n", __func__);
404
if ((mmc_stat & IE_CTO) != 0) {
405
mmc_reset_controller_fsm(mmc_base, SYSCTL_SRC);
407
} else if ((mmc_stat & ERRI_MASK) != 0)
410
if (mmc_stat & CC_MASK) {
411
writel(CC_MASK, &mmc_base->stat);
412
if (cmd->resp_type & MMC_RSP_PRESENT) {
413
if (cmd->resp_type & MMC_RSP_136) {
414
/* response type 2 */
415
cmd->response[3] = readl(&mmc_base->rsp10);
416
cmd->response[2] = readl(&mmc_base->rsp32);
417
cmd->response[1] = readl(&mmc_base->rsp54);
418
cmd->response[0] = readl(&mmc_base->rsp76);
420
/* response types 1, 1b, 3, 4, 5, 6 */
421
cmd->response[0] = readl(&mmc_base->rsp10);
425
if (data && (data->flags & MMC_DATA_READ)) {
426
mmc_read_data(mmc_base, data->dest,
427
data->blocksize * data->blocks);
428
} else if (data && (data->flags & MMC_DATA_WRITE)) {
429
mmc_write_data(mmc_base, data->src,
430
data->blocksize * data->blocks);
435
static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size)
437
unsigned int *output_buf = (unsigned int *)buf;
438
unsigned int mmc_stat;
444
count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
448
ulong start = get_timer(0);
450
mmc_stat = readl(&mmc_base->stat);
451
if (get_timer(0) - start > MAX_RETRY_MS) {
452
printf("%s: timedout waiting for status!\n",
456
} while (mmc_stat == 0);
458
if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
459
mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
461
if ((mmc_stat & ERRI_MASK) != 0)
464
if (mmc_stat & BRR_MASK) {
467
writel(readl(&mmc_base->stat) | BRR_MASK,
469
for (k = 0; k < count; k++) {
470
*output_buf = readl(&mmc_base->data);
476
if (mmc_stat & BWR_MASK)
477
writel(readl(&mmc_base->stat) | BWR_MASK,
480
if (mmc_stat & TC_MASK) {
481
writel(readl(&mmc_base->stat) | TC_MASK,
489
static int mmc_write_data(struct hsmmc *mmc_base, const char *buf,
492
unsigned int *input_buf = (unsigned int *)buf;
493
unsigned int mmc_stat;
499
count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size;
503
ulong start = get_timer(0);
505
mmc_stat = readl(&mmc_base->stat);
506
if (get_timer(0) - start > MAX_RETRY_MS) {
507
printf("%s: timedout waiting for status!\n",
511
} while (mmc_stat == 0);
513
if ((mmc_stat & (IE_DTO | IE_DCRC | IE_DEB)) != 0)
514
mmc_reset_controller_fsm(mmc_base, SYSCTL_SRD);
516
if ((mmc_stat & ERRI_MASK) != 0)
519
if (mmc_stat & BWR_MASK) {
522
writel(readl(&mmc_base->stat) | BWR_MASK,
524
for (k = 0; k < count; k++) {
525
writel(*input_buf, &mmc_base->data);
531
if (mmc_stat & BRR_MASK)
532
writel(readl(&mmc_base->stat) | BRR_MASK,
535
if (mmc_stat & TC_MASK) {
536
writel(readl(&mmc_base->stat) | TC_MASK,
544
static void omap_hsmmc_set_ios(struct mmc *mmc)
546
struct hsmmc *mmc_base;
547
unsigned int dsor = 0;
550
mmc_base = ((struct omap_hsmmc_data *)mmc->priv)->base_addr;
551
/* configue bus width */
552
switch (mmc->bus_width) {
554
writel(readl(&mmc_base->con) | DTW_8_BITMODE,
559
writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
561
writel(readl(&mmc_base->hctl) | DTW_4_BITMODE,
567
writel(readl(&mmc_base->con) & ~DTW_8_BITMODE,
569
writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE,
574
/* configure clock with 96Mhz system clock.
576
if (mmc->clock != 0) {
577
dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock);
578
if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock)
582
mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK),
583
(ICE_STOP | DTO_15THDTO | CEN_DISABLE));
585
mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK,
586
(dsor << CLKD_OFFSET) | ICE_OSCILLATE);
588
start = get_timer(0);
589
while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) {
590
if (get_timer(0) - start > MAX_RETRY_MS) {
591
printf("%s: timedout waiting for ics!\n", __func__);
595
writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl);
598
#ifdef OMAP_HSMMC_USE_GPIO
599
static int omap_hsmmc_getcd(struct mmc *mmc)
601
struct omap_hsmmc_data *priv_data = mmc->priv;
604
/* if no CD return as 1 */
605
cd_gpio = priv_data->cd_gpio;
609
return gpio_get_value(cd_gpio);
612
static int omap_hsmmc_getwp(struct mmc *mmc)
614
struct omap_hsmmc_data *priv_data = mmc->priv;
617
/* if no WP return as 0 */
618
wp_gpio = priv_data->wp_gpio;
622
return gpio_get_value(wp_gpio);
626
static const struct mmc_ops omap_hsmmc_ops = {
627
.send_cmd = omap_hsmmc_send_cmd,
628
.set_ios = omap_hsmmc_set_ios,
629
.init = omap_hsmmc_init_setup,
630
#ifdef OMAP_HSMMC_USE_GPIO
631
.getcd = omap_hsmmc_getcd,
632
.getwp = omap_hsmmc_getwp,
636
int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max, int cd_gpio,
640
struct omap_hsmmc_data *priv_data;
641
struct mmc_config *cfg;
644
priv_data = malloc(sizeof(*priv_data));
645
if (priv_data == NULL)
648
host_caps_val = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS |
653
priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
655
#ifdef OMAP_HSMMC2_BASE
657
priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC2_BASE;
658
#if (defined(CONFIG_OMAP44XX) || defined(CONFIG_OMAP54XX) || \
659
defined(CONFIG_DRA7XX)) && defined(CONFIG_HSMMC2_8BIT)
660
/* Enable 8-bit interface for eMMC on OMAP4/5 or DRA7XX */
661
host_caps_val |= MMC_MODE_8BIT;
665
#ifdef OMAP_HSMMC3_BASE
667
priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC3_BASE;
668
#if defined(CONFIG_DRA7XX) && defined(CONFIG_HSMMC3_8BIT)
669
/* Enable 8-bit interface for eMMC on DRA7XX */
670
host_caps_val |= MMC_MODE_8BIT;
675
priv_data->base_addr = (struct hsmmc *)OMAP_HSMMC1_BASE;
678
#ifdef OMAP_HSMMC_USE_GPIO
679
/* on error gpio values are set to -1, which is what we want */
680
priv_data->cd_gpio = omap_mmc_setup_gpio_in(cd_gpio, "mmc_cd");
681
priv_data->wp_gpio = omap_mmc_setup_gpio_in(wp_gpio, "mmc_wp");
684
cfg = &priv_data->cfg;
686
cfg->name = "OMAP SD/MMC";
687
cfg->ops = &omap_hsmmc_ops;
689
cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
690
cfg->host_caps = host_caps_val & ~host_caps_mask;
697
if (cfg->host_caps & MMC_MODE_HS) {
698
if (cfg->host_caps & MMC_MODE_HS_52MHz)
699
cfg->f_max = 52000000;
701
cfg->f_max = 26000000;
703
cfg->f_max = 20000000;
706
cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
708
#if defined(CONFIG_OMAP34XX)
710
* Silicon revs 2.1 and older do not support multiblock transfers.
712
if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
715
mmc = mmc_create(cfg, priv_data);