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de941241 SG |
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> | |
14fa2dd0 | 31 | #include <twl6030.h> |
de941241 SG |
32 | #include <asm/io.h> |
33 | #include <asm/arch/mmc_host_def.h> | |
96e0e7b3 | 34 | #include <asm/arch/sys_proto.h> |
de941241 | 35 | |
eb9a28f6 NM |
36 | /* If we fail after 1 second wait, something is really bad */ |
37 | #define MAX_RETRY_MS 1000 | |
38 | ||
933efe64 S |
39 | static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size); |
40 | static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, | |
41 | unsigned int siz); | |
de941241 | 42 | static struct mmc hsmmc_dev[2]; |
14fa2dd0 B |
43 | |
44 | #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER) | |
45 | static void omap4_vmmc_pbias_config(struct mmc *mmc) | |
46 | { | |
47 | u32 value = 0; | |
48 | struct omap4_sys_ctrl_regs *const ctrl = | |
49 | (struct omap4_sys_ctrl_regs *)SYSCTRL_GENERAL_CORE_BASE; | |
50 | ||
51 | ||
52 | value = readl(&ctrl->control_pbiaslite); | |
53 | value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ); | |
54 | writel(value, &ctrl->control_pbiaslite); | |
55 | /* set VMMC to 3V */ | |
56 | twl6030_power_mmc_init(); | |
57 | value = readl(&ctrl->control_pbiaslite); | |
58 | value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ; | |
59 | writel(value, &ctrl->control_pbiaslite); | |
60 | } | |
61 | #endif | |
62 | ||
63 | unsigned char mmc_board_init(struct mmc *mmc) | |
de941241 SG |
64 | { |
65 | #if defined(CONFIG_TWL4030_POWER) | |
66 | twl4030_power_mmc_init(); | |
67 | #endif | |
68 | ||
69 | #if defined(CONFIG_OMAP34XX) | |
70 | t2_t *t2_base = (t2_t *)T2_BASE; | |
71 | struct prcm *prcm_base = (struct prcm *)PRCM_BASE; | |
72 | ||
73 | writel(readl(&t2_base->pbias_lite) | PBIASLITEPWRDNZ1 | | |
74 | PBIASSPEEDCTRL0 | PBIASLITEPWRDNZ0, | |
75 | &t2_base->pbias_lite); | |
76 | ||
77 | writel(readl(&t2_base->devconf0) | MMCSDIO1ADPCLKISEL, | |
78 | &t2_base->devconf0); | |
79 | ||
80 | writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL, | |
81 | &t2_base->devconf1); | |
82 | ||
83 | writel(readl(&prcm_base->fclken1_core) | | |
84 | EN_MMC1 | EN_MMC2 | EN_MMC3, | |
85 | &prcm_base->fclken1_core); | |
86 | ||
87 | writel(readl(&prcm_base->iclken1_core) | | |
88 | EN_MMC1 | EN_MMC2 | EN_MMC3, | |
89 | &prcm_base->iclken1_core); | |
90 | #endif | |
91 | ||
14fa2dd0 B |
92 | #if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER) |
93 | /* PBIAS config needed for MMC1 only */ | |
94 | if (mmc->block_dev.dev == 0) | |
95 | omap4_vmmc_pbias_config(mmc); | |
96 | #endif | |
de941241 SG |
97 | |
98 | return 0; | |
99 | } | |
100 | ||
933efe64 | 101 | void mmc_init_stream(struct hsmmc *mmc_base) |
de941241 | 102 | { |
eb9a28f6 | 103 | ulong start; |
de941241 SG |
104 | |
105 | writel(readl(&mmc_base->con) | INIT_INITSTREAM, &mmc_base->con); | |
106 | ||
107 | writel(MMC_CMD0, &mmc_base->cmd); | |
eb9a28f6 NM |
108 | start = get_timer(0); |
109 | while (!(readl(&mmc_base->stat) & CC_MASK)) { | |
110 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
111 | printf("%s: timedout waiting for cc!\n", __func__); | |
112 | return; | |
113 | } | |
114 | } | |
de941241 SG |
115 | writel(CC_MASK, &mmc_base->stat) |
116 | ; | |
117 | writel(MMC_CMD0, &mmc_base->cmd) | |
118 | ; | |
eb9a28f6 NM |
119 | start = get_timer(0); |
120 | while (!(readl(&mmc_base->stat) & CC_MASK)) { | |
121 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
122 | printf("%s: timedout waiting for cc2!\n", __func__); | |
123 | return; | |
124 | } | |
125 | } | |
de941241 SG |
126 | writel(readl(&mmc_base->con) & ~INIT_INITSTREAM, &mmc_base->con); |
127 | } | |
128 | ||
129 | ||
130 | static int mmc_init_setup(struct mmc *mmc) | |
131 | { | |
933efe64 | 132 | struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv; |
de941241 SG |
133 | unsigned int reg_val; |
134 | unsigned int dsor; | |
eb9a28f6 | 135 | ulong start; |
de941241 | 136 | |
14fa2dd0 | 137 | mmc_board_init(mmc); |
de941241 SG |
138 | |
139 | writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET, | |
140 | &mmc_base->sysconfig); | |
eb9a28f6 NM |
141 | start = get_timer(0); |
142 | while ((readl(&mmc_base->sysstatus) & RESETDONE) == 0) { | |
143 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
144 | printf("%s: timedout waiting for cc2!\n", __func__); | |
145 | return TIMEOUT; | |
146 | } | |
147 | } | |
de941241 | 148 | writel(readl(&mmc_base->sysctl) | SOFTRESETALL, &mmc_base->sysctl); |
eb9a28f6 NM |
149 | start = get_timer(0); |
150 | while ((readl(&mmc_base->sysctl) & SOFTRESETALL) != 0x0) { | |
151 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
152 | printf("%s: timedout waiting for softresetall!\n", | |
153 | __func__); | |
154 | return TIMEOUT; | |
155 | } | |
156 | } | |
de941241 SG |
157 | writel(DTW_1_BITMODE | SDBP_PWROFF | SDVS_3V0, &mmc_base->hctl); |
158 | writel(readl(&mmc_base->capa) | VS30_3V0SUP | VS18_1V8SUP, | |
159 | &mmc_base->capa); | |
160 | ||
161 | reg_val = readl(&mmc_base->con) & RESERVED_MASK; | |
162 | ||
163 | writel(CTPL_MMC_SD | reg_val | WPP_ACTIVEHIGH | CDP_ACTIVEHIGH | | |
164 | MIT_CTO | DW8_1_4BITMODE | MODE_FUNC | STR_BLOCK | | |
165 | HR_NOHOSTRESP | INIT_NOINIT | NOOPENDRAIN, &mmc_base->con); | |
166 | ||
167 | dsor = 240; | |
168 | mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), | |
169 | (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); | |
170 | mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, | |
171 | (dsor << CLKD_OFFSET) | ICE_OSCILLATE); | |
eb9a28f6 NM |
172 | start = get_timer(0); |
173 | while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { | |
174 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
175 | printf("%s: timedout waiting for ics!\n", __func__); | |
176 | return TIMEOUT; | |
177 | } | |
178 | } | |
de941241 SG |
179 | writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); |
180 | ||
181 | writel(readl(&mmc_base->hctl) | SDBP_PWRON, &mmc_base->hctl); | |
182 | ||
183 | writel(IE_BADA | IE_CERR | IE_DEB | IE_DCRC | IE_DTO | IE_CIE | | |
184 | IE_CEB | IE_CCRC | IE_CTO | IE_BRR | IE_BWR | IE_TC | IE_CC, | |
185 | &mmc_base->ie); | |
186 | ||
187 | mmc_init_stream(mmc_base); | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
192 | ||
193 | static int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, | |
194 | struct mmc_data *data) | |
195 | { | |
933efe64 | 196 | struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv; |
de941241 | 197 | unsigned int flags, mmc_stat; |
eb9a28f6 | 198 | ulong start; |
de941241 | 199 | |
eb9a28f6 NM |
200 | start = get_timer(0); |
201 | while ((readl(&mmc_base->pstate) & DATI_MASK) == DATI_CMDDIS) { | |
202 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
203 | printf("%s: timedout waiting for cmddis!\n", __func__); | |
204 | return TIMEOUT; | |
205 | } | |
206 | } | |
de941241 | 207 | writel(0xFFFFFFFF, &mmc_base->stat); |
eb9a28f6 NM |
208 | start = get_timer(0); |
209 | while (readl(&mmc_base->stat)) { | |
210 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
211 | printf("%s: timedout waiting for stat!\n", __func__); | |
212 | return TIMEOUT; | |
213 | } | |
214 | } | |
de941241 SG |
215 | /* |
216 | * CMDREG | |
217 | * CMDIDX[13:8] : Command index | |
218 | * DATAPRNT[5] : Data Present Select | |
219 | * ENCMDIDX[4] : Command Index Check Enable | |
220 | * ENCMDCRC[3] : Command CRC Check Enable | |
221 | * RSPTYP[1:0] | |
222 | * 00 = No Response | |
223 | * 01 = Length 136 | |
224 | * 10 = Length 48 | |
225 | * 11 = Length 48 Check busy after response | |
226 | */ | |
227 | /* Delay added before checking the status of frq change | |
228 | * retry not supported by mmc.c(core file) | |
229 | */ | |
230 | if (cmd->cmdidx == SD_CMD_APP_SEND_SCR) | |
231 | udelay(50000); /* wait 50 ms */ | |
232 | ||
233 | if (!(cmd->resp_type & MMC_RSP_PRESENT)) | |
234 | flags = 0; | |
235 | else if (cmd->resp_type & MMC_RSP_136) | |
236 | flags = RSP_TYPE_LGHT136 | CICE_NOCHECK; | |
237 | else if (cmd->resp_type & MMC_RSP_BUSY) | |
238 | flags = RSP_TYPE_LGHT48B; | |
239 | else | |
240 | flags = RSP_TYPE_LGHT48; | |
241 | ||
242 | /* enable default flags */ | |
243 | flags = flags | (CMD_TYPE_NORMAL | CICE_NOCHECK | CCCE_NOCHECK | | |
244 | MSBS_SGLEBLK | ACEN_DISABLE | BCE_DISABLE | DE_DISABLE); | |
245 | ||
246 | if (cmd->resp_type & MMC_RSP_CRC) | |
247 | flags |= CCCE_CHECK; | |
248 | if (cmd->resp_type & MMC_RSP_OPCODE) | |
249 | flags |= CICE_CHECK; | |
250 | ||
251 | if (data) { | |
252 | if ((cmd->cmdidx == MMC_CMD_READ_MULTIPLE_BLOCK) || | |
253 | (cmd->cmdidx == MMC_CMD_WRITE_MULTIPLE_BLOCK)) { | |
254 | flags |= (MSBS_MULTIBLK | BCE_ENABLE); | |
255 | data->blocksize = 512; | |
256 | writel(data->blocksize | (data->blocks << 16), | |
257 | &mmc_base->blk); | |
258 | } else | |
259 | writel(data->blocksize | NBLK_STPCNT, &mmc_base->blk); | |
260 | ||
261 | if (data->flags & MMC_DATA_READ) | |
262 | flags |= (DP_DATA | DDIR_READ); | |
263 | else | |
264 | flags |= (DP_DATA | DDIR_WRITE); | |
265 | } | |
266 | ||
267 | writel(cmd->cmdarg, &mmc_base->arg); | |
268 | writel((cmd->cmdidx << 24) | flags, &mmc_base->cmd); | |
269 | ||
eb9a28f6 | 270 | start = get_timer(0); |
de941241 SG |
271 | do { |
272 | mmc_stat = readl(&mmc_base->stat); | |
eb9a28f6 NM |
273 | if (get_timer(0) - start > MAX_RETRY_MS) { |
274 | printf("%s : timeout: No status update\n", __func__); | |
275 | return TIMEOUT; | |
276 | } | |
277 | } while (!mmc_stat); | |
de941241 SG |
278 | |
279 | if ((mmc_stat & IE_CTO) != 0) | |
280 | return TIMEOUT; | |
281 | else if ((mmc_stat & ERRI_MASK) != 0) | |
282 | return -1; | |
283 | ||
284 | if (mmc_stat & CC_MASK) { | |
285 | writel(CC_MASK, &mmc_base->stat); | |
286 | if (cmd->resp_type & MMC_RSP_PRESENT) { | |
287 | if (cmd->resp_type & MMC_RSP_136) { | |
288 | /* response type 2 */ | |
289 | cmd->response[3] = readl(&mmc_base->rsp10); | |
290 | cmd->response[2] = readl(&mmc_base->rsp32); | |
291 | cmd->response[1] = readl(&mmc_base->rsp54); | |
292 | cmd->response[0] = readl(&mmc_base->rsp76); | |
293 | } else | |
294 | /* response types 1, 1b, 3, 4, 5, 6 */ | |
295 | cmd->response[0] = readl(&mmc_base->rsp10); | |
296 | } | |
297 | } | |
298 | ||
299 | if (data && (data->flags & MMC_DATA_READ)) { | |
300 | mmc_read_data(mmc_base, data->dest, | |
301 | data->blocksize * data->blocks); | |
302 | } else if (data && (data->flags & MMC_DATA_WRITE)) { | |
303 | mmc_write_data(mmc_base, data->src, | |
304 | data->blocksize * data->blocks); | |
305 | } | |
306 | return 0; | |
307 | } | |
308 | ||
933efe64 | 309 | static int mmc_read_data(struct hsmmc *mmc_base, char *buf, unsigned int size) |
de941241 SG |
310 | { |
311 | unsigned int *output_buf = (unsigned int *)buf; | |
312 | unsigned int mmc_stat; | |
313 | unsigned int count; | |
314 | ||
315 | /* | |
316 | * Start Polled Read | |
317 | */ | |
318 | count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; | |
319 | count /= 4; | |
320 | ||
321 | while (size) { | |
eb9a28f6 | 322 | ulong start = get_timer(0); |
de941241 SG |
323 | do { |
324 | mmc_stat = readl(&mmc_base->stat); | |
eb9a28f6 NM |
325 | if (get_timer(0) - start > MAX_RETRY_MS) { |
326 | printf("%s: timedout waiting for status!\n", | |
327 | __func__); | |
328 | return TIMEOUT; | |
329 | } | |
de941241 SG |
330 | } while (mmc_stat == 0); |
331 | ||
332 | if ((mmc_stat & ERRI_MASK) != 0) | |
333 | return 1; | |
334 | ||
335 | if (mmc_stat & BRR_MASK) { | |
336 | unsigned int k; | |
337 | ||
338 | writel(readl(&mmc_base->stat) | BRR_MASK, | |
339 | &mmc_base->stat); | |
340 | for (k = 0; k < count; k++) { | |
341 | *output_buf = readl(&mmc_base->data); | |
342 | output_buf++; | |
343 | } | |
344 | size -= (count*4); | |
345 | } | |
346 | ||
347 | if (mmc_stat & BWR_MASK) | |
348 | writel(readl(&mmc_base->stat) | BWR_MASK, | |
349 | &mmc_base->stat); | |
350 | ||
351 | if (mmc_stat & TC_MASK) { | |
352 | writel(readl(&mmc_base->stat) | TC_MASK, | |
353 | &mmc_base->stat); | |
354 | break; | |
355 | } | |
356 | } | |
357 | return 0; | |
358 | } | |
359 | ||
933efe64 S |
360 | static int mmc_write_data(struct hsmmc *mmc_base, const char *buf, |
361 | unsigned int size) | |
de941241 SG |
362 | { |
363 | unsigned int *input_buf = (unsigned int *)buf; | |
364 | unsigned int mmc_stat; | |
365 | unsigned int count; | |
366 | ||
367 | /* | |
368 | * Start Polled Read | |
369 | */ | |
370 | count = (size > MMCSD_SECTOR_SIZE) ? MMCSD_SECTOR_SIZE : size; | |
371 | count /= 4; | |
372 | ||
373 | while (size) { | |
eb9a28f6 | 374 | ulong start = get_timer(0); |
de941241 SG |
375 | do { |
376 | mmc_stat = readl(&mmc_base->stat); | |
eb9a28f6 NM |
377 | if (get_timer(0) - start > MAX_RETRY_MS) { |
378 | printf("%s: timedout waiting for status!\n", | |
379 | __func__); | |
380 | return TIMEOUT; | |
381 | } | |
de941241 SG |
382 | } while (mmc_stat == 0); |
383 | ||
384 | if ((mmc_stat & ERRI_MASK) != 0) | |
385 | return 1; | |
386 | ||
387 | if (mmc_stat & BWR_MASK) { | |
388 | unsigned int k; | |
389 | ||
390 | writel(readl(&mmc_base->stat) | BWR_MASK, | |
391 | &mmc_base->stat); | |
392 | for (k = 0; k < count; k++) { | |
393 | writel(*input_buf, &mmc_base->data); | |
394 | input_buf++; | |
395 | } | |
396 | size -= (count*4); | |
397 | } | |
398 | ||
399 | if (mmc_stat & BRR_MASK) | |
400 | writel(readl(&mmc_base->stat) | BRR_MASK, | |
401 | &mmc_base->stat); | |
402 | ||
403 | if (mmc_stat & TC_MASK) { | |
404 | writel(readl(&mmc_base->stat) | TC_MASK, | |
405 | &mmc_base->stat); | |
406 | break; | |
407 | } | |
408 | } | |
409 | return 0; | |
410 | } | |
411 | ||
412 | static void mmc_set_ios(struct mmc *mmc) | |
413 | { | |
933efe64 | 414 | struct hsmmc *mmc_base = (struct hsmmc *)mmc->priv; |
de941241 | 415 | unsigned int dsor = 0; |
eb9a28f6 | 416 | ulong start; |
de941241 SG |
417 | |
418 | /* configue bus width */ | |
419 | switch (mmc->bus_width) { | |
420 | case 8: | |
421 | writel(readl(&mmc_base->con) | DTW_8_BITMODE, | |
422 | &mmc_base->con); | |
423 | break; | |
424 | ||
425 | case 4: | |
426 | writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, | |
427 | &mmc_base->con); | |
428 | writel(readl(&mmc_base->hctl) | DTW_4_BITMODE, | |
429 | &mmc_base->hctl); | |
430 | break; | |
431 | ||
432 | case 1: | |
433 | default: | |
434 | writel(readl(&mmc_base->con) & ~DTW_8_BITMODE, | |
435 | &mmc_base->con); | |
436 | writel(readl(&mmc_base->hctl) & ~DTW_4_BITMODE, | |
437 | &mmc_base->hctl); | |
438 | break; | |
439 | } | |
440 | ||
441 | /* configure clock with 96Mhz system clock. | |
442 | */ | |
443 | if (mmc->clock != 0) { | |
444 | dsor = (MMC_CLOCK_REFERENCE * 1000000 / mmc->clock); | |
445 | if ((MMC_CLOCK_REFERENCE * 1000000) / dsor > mmc->clock) | |
446 | dsor++; | |
447 | } | |
448 | ||
449 | mmc_reg_out(&mmc_base->sysctl, (ICE_MASK | DTO_MASK | CEN_MASK), | |
450 | (ICE_STOP | DTO_15THDTO | CEN_DISABLE)); | |
451 | ||
452 | mmc_reg_out(&mmc_base->sysctl, ICE_MASK | CLKD_MASK, | |
453 | (dsor << CLKD_OFFSET) | ICE_OSCILLATE); | |
454 | ||
eb9a28f6 NM |
455 | start = get_timer(0); |
456 | while ((readl(&mmc_base->sysctl) & ICS_MASK) == ICS_NOTREADY) { | |
457 | if (get_timer(0) - start > MAX_RETRY_MS) { | |
458 | printf("%s: timedout waiting for ics!\n", __func__); | |
459 | return; | |
460 | } | |
461 | } | |
de941241 SG |
462 | writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); |
463 | } | |
464 | ||
465 | int omap_mmc_init(int dev_index) | |
466 | { | |
467 | struct mmc *mmc; | |
468 | ||
469 | mmc = &hsmmc_dev[dev_index]; | |
470 | ||
471 | sprintf(mmc->name, "OMAP SD/MMC"); | |
472 | mmc->send_cmd = mmc_send_cmd; | |
473 | mmc->set_ios = mmc_set_ios; | |
474 | mmc->init = mmc_init_setup; | |
48972d90 | 475 | mmc->getcd = NULL; |
de941241 SG |
476 | |
477 | switch (dev_index) { | |
478 | case 0: | |
933efe64 | 479 | mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE; |
de941241 | 480 | break; |
1037d585 | 481 | #ifdef OMAP_HSMMC2_BASE |
de941241 | 482 | case 1: |
933efe64 | 483 | mmc->priv = (struct hsmmc *)OMAP_HSMMC2_BASE; |
de941241 | 484 | break; |
1037d585 TR |
485 | #endif |
486 | #ifdef OMAP_HSMMC3_BASE | |
de941241 | 487 | case 2: |
933efe64 | 488 | mmc->priv = (struct hsmmc *)OMAP_HSMMC3_BASE; |
de941241 | 489 | break; |
1037d585 | 490 | #endif |
de941241 | 491 | default: |
933efe64 | 492 | mmc->priv = (struct hsmmc *)OMAP_HSMMC1_BASE; |
de941241 SG |
493 | return 1; |
494 | } | |
495 | mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; | |
ecd9af88 B |
496 | mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | |
497 | MMC_MODE_HC; | |
de941241 SG |
498 | |
499 | mmc->f_min = 400000; | |
500 | mmc->f_max = 52000000; | |
501 | ||
8feafcc4 JR |
502 | mmc->b_max = 0; |
503 | ||
4ca9244d JR |
504 | #if defined(CONFIG_OMAP34XX) |
505 | /* | |
506 | * Silicon revs 2.1 and older do not support multiblock transfers. | |
507 | */ | |
508 | if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21)) | |
509 | mmc->b_max = 1; | |
510 | #endif | |
511 | ||
de941241 SG |
512 | mmc_register(mmc); |
513 | ||
514 | return 0; | |
515 | } |