2 * Copyright 2008, Freescale Semiconductor, Inc
5 * Based vaguely on the Linux code
7 * SPDX-License-Identifier: GPL-2.0+
14 #include <dm/device-internal.h>
20 #include <linux/list.h>
22 #include "mmc_private.h"
24 #ifndef CONFIG_DM_MMC_OPS
25 __weak
int board_mmc_getwp(struct mmc
*mmc
)
30 int mmc_getwp(struct mmc
*mmc
)
34 wp
= board_mmc_getwp(mmc
);
37 if (mmc
->cfg
->ops
->getwp
)
38 wp
= mmc
->cfg
->ops
->getwp(mmc
);
46 __weak
int board_mmc_getcd(struct mmc
*mmc
)
52 #ifdef CONFIG_MMC_TRACE
53 void mmmc_trace_before_send(struct mmc
*mmc
, struct mmc_cmd
*cmd
)
55 printf("CMD_SEND:%d\n", cmd
->cmdidx
);
56 printf("\t\tARG\t\t\t 0x%08X\n", cmd
->cmdarg
);
59 void mmmc_trace_after_send(struct mmc
*mmc
, struct mmc_cmd
*cmd
, int ret
)
65 printf("\t\tRET\t\t\t %d\n", ret
);
67 switch (cmd
->resp_type
) {
69 printf("\t\tMMC_RSP_NONE\n");
72 printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n",
76 printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n",
80 printf("\t\tMMC_RSP_R2\t\t 0x%08X \n",
82 printf("\t\t \t\t 0x%08X \n",
84 printf("\t\t \t\t 0x%08X \n",
86 printf("\t\t \t\t 0x%08X \n",
89 printf("\t\t\t\t\tDUMPING DATA\n");
90 for (i
= 0; i
< 4; i
++) {
92 printf("\t\t\t\t\t%03d - ", i
*4);
93 ptr
= (u8
*)&cmd
->response
[i
];
95 for (j
= 0; j
< 4; j
++)
96 printf("%02X ", *ptr
--);
101 printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n",
105 printf("\t\tERROR MMC rsp not supported\n");
111 void mmc_trace_state(struct mmc
*mmc
, struct mmc_cmd
*cmd
)
115 status
= (cmd
->response
[0] & MMC_STATUS_CURR_STATE
) >> 9;
116 printf("CURR STATE:%d\n", status
);
120 #ifndef CONFIG_DM_MMC_OPS
121 int mmc_send_cmd(struct mmc
*mmc
, struct mmc_cmd
*cmd
, struct mmc_data
*data
)
125 mmmc_trace_before_send(mmc
, cmd
);
126 ret
= mmc
->cfg
->ops
->send_cmd(mmc
, cmd
, data
);
127 mmmc_trace_after_send(mmc
, cmd
, ret
);
133 int mmc_send_status(struct mmc
*mmc
, int timeout
)
136 int err
, retries
= 5;
138 cmd
.cmdidx
= MMC_CMD_SEND_STATUS
;
139 cmd
.resp_type
= MMC_RSP_R1
;
140 if (!mmc_host_is_spi(mmc
))
141 cmd
.cmdarg
= mmc
->rca
<< 16;
144 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
146 if ((cmd
.response
[0] & MMC_STATUS_RDY_FOR_DATA
) &&
147 (cmd
.response
[0] & MMC_STATUS_CURR_STATE
) !=
150 else if (cmd
.response
[0] & MMC_STATUS_MASK
) {
151 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
152 printf("Status Error: 0x%08X\n",
157 } else if (--retries
< 0)
166 mmc_trace_state(mmc
, &cmd
);
168 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
169 printf("Timeout waiting card ready\n");
177 int mmc_set_blocklen(struct mmc
*mmc
, int len
)
184 cmd
.cmdidx
= MMC_CMD_SET_BLOCKLEN
;
185 cmd
.resp_type
= MMC_RSP_R1
;
188 return mmc_send_cmd(mmc
, &cmd
, NULL
);
191 static int mmc_read_blocks(struct mmc
*mmc
, void *dst
, lbaint_t start
,
195 struct mmc_data data
;
198 cmd
.cmdidx
= MMC_CMD_READ_MULTIPLE_BLOCK
;
200 cmd
.cmdidx
= MMC_CMD_READ_SINGLE_BLOCK
;
202 if (mmc
->high_capacity
)
205 cmd
.cmdarg
= start
* mmc
->read_bl_len
;
207 cmd
.resp_type
= MMC_RSP_R1
;
210 data
.blocks
= blkcnt
;
211 data
.blocksize
= mmc
->read_bl_len
;
212 data
.flags
= MMC_DATA_READ
;
214 if (mmc_send_cmd(mmc
, &cmd
, &data
))
218 cmd
.cmdidx
= MMC_CMD_STOP_TRANSMISSION
;
220 cmd
.resp_type
= MMC_RSP_R1b
;
221 if (mmc_send_cmd(mmc
, &cmd
, NULL
)) {
222 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
223 printf("mmc fail to send stop cmd\n");
233 ulong
mmc_bread(struct udevice
*dev
, lbaint_t start
, lbaint_t blkcnt
, void *dst
)
235 ulong
mmc_bread(struct blk_desc
*block_dev
, lbaint_t start
, lbaint_t blkcnt
,
240 struct blk_desc
*block_dev
= dev_get_uclass_platdata(dev
);
242 int dev_num
= block_dev
->devnum
;
244 lbaint_t cur
, blocks_todo
= blkcnt
;
249 struct mmc
*mmc
= find_mmc_device(dev_num
);
253 err
= blk_dselect_hwpart(block_dev
, block_dev
->hwpart
);
257 if ((start
+ blkcnt
) > block_dev
->lba
) {
258 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
259 printf("MMC: block number 0x" LBAF
" exceeds max(0x" LBAF
")\n",
260 start
+ blkcnt
, block_dev
->lba
);
265 if (mmc_set_blocklen(mmc
, mmc
->read_bl_len
)) {
266 debug("%s: Failed to set blocklen\n", __func__
);
271 cur
= (blocks_todo
> mmc
->cfg
->b_max
) ?
272 mmc
->cfg
->b_max
: blocks_todo
;
273 if (mmc_read_blocks(mmc
, dst
, start
, cur
) != cur
) {
274 debug("%s: Failed to read blocks\n", __func__
);
279 dst
+= cur
* mmc
->read_bl_len
;
280 } while (blocks_todo
> 0);
285 static int mmc_go_idle(struct mmc
*mmc
)
292 cmd
.cmdidx
= MMC_CMD_GO_IDLE_STATE
;
294 cmd
.resp_type
= MMC_RSP_NONE
;
296 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
306 static int sd_send_op_cond(struct mmc
*mmc
)
313 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
314 cmd
.resp_type
= MMC_RSP_R1
;
317 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
322 cmd
.cmdidx
= SD_CMD_APP_SEND_OP_COND
;
323 cmd
.resp_type
= MMC_RSP_R3
;
326 * Most cards do not answer if some reserved bits
327 * in the ocr are set. However, Some controller
328 * can set bit 7 (reserved for low voltages), but
329 * how to manage low voltages SD card is not yet
332 cmd
.cmdarg
= mmc_host_is_spi(mmc
) ? 0 :
333 (mmc
->cfg
->voltages
& 0xff8000);
335 if (mmc
->version
== SD_VERSION_2
)
336 cmd
.cmdarg
|= OCR_HCS
;
338 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
343 if (cmd
.response
[0] & OCR_BUSY
)
352 if (mmc
->version
!= SD_VERSION_2
)
353 mmc
->version
= SD_VERSION_1_0
;
355 if (mmc_host_is_spi(mmc
)) { /* read OCR for spi */
356 cmd
.cmdidx
= MMC_CMD_SPI_READ_OCR
;
357 cmd
.resp_type
= MMC_RSP_R3
;
360 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
366 mmc
->ocr
= cmd
.response
[0];
368 mmc
->high_capacity
= ((mmc
->ocr
& OCR_HCS
) == OCR_HCS
);
374 static int mmc_send_op_cond_iter(struct mmc
*mmc
, int use_arg
)
379 cmd
.cmdidx
= MMC_CMD_SEND_OP_COND
;
380 cmd
.resp_type
= MMC_RSP_R3
;
382 if (use_arg
&& !mmc_host_is_spi(mmc
))
383 cmd
.cmdarg
= OCR_HCS
|
384 (mmc
->cfg
->voltages
&
385 (mmc
->ocr
& OCR_VOLTAGE_MASK
)) |
386 (mmc
->ocr
& OCR_ACCESS_MODE
);
388 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
391 mmc
->ocr
= cmd
.response
[0];
395 static int mmc_send_op_cond(struct mmc
*mmc
)
399 /* Some cards seem to need this */
402 /* Asking to the card its capabilities */
403 for (i
= 0; i
< 2; i
++) {
404 err
= mmc_send_op_cond_iter(mmc
, i
!= 0);
408 /* exit if not busy (flag seems to be inverted) */
409 if (mmc
->ocr
& OCR_BUSY
)
412 mmc
->op_cond_pending
= 1;
416 static int mmc_complete_op_cond(struct mmc
*mmc
)
423 mmc
->op_cond_pending
= 0;
424 if (!(mmc
->ocr
& OCR_BUSY
)) {
425 start
= get_timer(0);
427 err
= mmc_send_op_cond_iter(mmc
, 1);
430 if (mmc
->ocr
& OCR_BUSY
)
432 if (get_timer(start
) > timeout
)
438 if (mmc_host_is_spi(mmc
)) { /* read OCR for spi */
439 cmd
.cmdidx
= MMC_CMD_SPI_READ_OCR
;
440 cmd
.resp_type
= MMC_RSP_R3
;
443 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
448 mmc
->ocr
= cmd
.response
[0];
451 mmc
->version
= MMC_VERSION_UNKNOWN
;
453 mmc
->high_capacity
= ((mmc
->ocr
& OCR_HCS
) == OCR_HCS
);
460 static int mmc_send_ext_csd(struct mmc
*mmc
, u8
*ext_csd
)
463 struct mmc_data data
;
466 /* Get the Card Status Register */
467 cmd
.cmdidx
= MMC_CMD_SEND_EXT_CSD
;
468 cmd
.resp_type
= MMC_RSP_R1
;
471 data
.dest
= (char *)ext_csd
;
473 data
.blocksize
= MMC_MAX_BLOCK_LEN
;
474 data
.flags
= MMC_DATA_READ
;
476 err
= mmc_send_cmd(mmc
, &cmd
, &data
);
481 int mmc_switch(struct mmc
*mmc
, u8 set
, u8 index
, u8 value
)
487 cmd
.cmdidx
= MMC_CMD_SWITCH
;
488 cmd
.resp_type
= MMC_RSP_R1b
;
489 cmd
.cmdarg
= (MMC_SWITCH_MODE_WRITE_BYTE
<< 24) |
493 ret
= mmc_send_cmd(mmc
, &cmd
, NULL
);
495 /* Waiting for the ready status */
497 ret
= mmc_send_status(mmc
, timeout
);
503 static int mmc_change_freq(struct mmc
*mmc
)
505 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
511 if (mmc_host_is_spi(mmc
))
514 /* Only version 4 supports high-speed */
515 if (mmc
->version
< MMC_VERSION_4
)
518 mmc
->card_caps
|= MMC_MODE_4BIT
| MMC_MODE_8BIT
;
520 err
= mmc_send_ext_csd(mmc
, ext_csd
);
525 cardtype
= ext_csd
[EXT_CSD_CARD_TYPE
] & 0xf;
527 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_HS_TIMING
, 1);
532 /* Now check to see that it worked */
533 err
= mmc_send_ext_csd(mmc
, ext_csd
);
538 /* No high-speed support */
539 if (!ext_csd
[EXT_CSD_HS_TIMING
])
542 /* High Speed is set, there are two types: 52MHz and 26MHz */
543 if (cardtype
& EXT_CSD_CARD_TYPE_52
) {
544 if (cardtype
& EXT_CSD_CARD_TYPE_DDR_1_8V
)
545 mmc
->card_caps
|= MMC_MODE_DDR_52MHz
;
546 mmc
->card_caps
|= MMC_MODE_HS_52MHz
| MMC_MODE_HS
;
548 mmc
->card_caps
|= MMC_MODE_HS
;
554 static int mmc_set_capacity(struct mmc
*mmc
, int part_num
)
558 mmc
->capacity
= mmc
->capacity_user
;
562 mmc
->capacity
= mmc
->capacity_boot
;
565 mmc
->capacity
= mmc
->capacity_rpmb
;
571 mmc
->capacity
= mmc
->capacity_gp
[part_num
- 4];
577 mmc_get_blk_desc(mmc
)->lba
= lldiv(mmc
->capacity
, mmc
->read_bl_len
);
582 int mmc_switch_part(struct mmc
*mmc
, unsigned int part_num
)
586 ret
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
, EXT_CSD_PART_CONF
,
587 (mmc
->part_config
& ~PART_ACCESS_MASK
)
588 | (part_num
& PART_ACCESS_MASK
));
591 * Set the capacity if the switch succeeded or was intended
592 * to return to representing the raw device.
594 if ((ret
== 0) || ((ret
== -ENODEV
) && (part_num
== 0))) {
595 ret
= mmc_set_capacity(mmc
, part_num
);
596 mmc_get_blk_desc(mmc
)->hwpart
= part_num
;
602 int mmc_hwpart_config(struct mmc
*mmc
,
603 const struct mmc_hwpart_conf
*conf
,
604 enum mmc_hwpart_conf_mode mode
)
610 u32 max_enh_size_mult
;
611 u32 tot_enh_size_mult
= 0;
614 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
616 if (mode
< MMC_HWPART_CONF_CHECK
|| mode
> MMC_HWPART_CONF_COMPLETE
)
619 if (IS_SD(mmc
) || (mmc
->version
< MMC_VERSION_4_41
)) {
620 printf("eMMC >= 4.4 required for enhanced user data area\n");
624 if (!(mmc
->part_support
& PART_SUPPORT
)) {
625 printf("Card does not support partitioning\n");
629 if (!mmc
->hc_wp_grp_size
) {
630 printf("Card does not define HC WP group size\n");
634 /* check partition alignment and total enhanced size */
635 if (conf
->user
.enh_size
) {
636 if (conf
->user
.enh_size
% mmc
->hc_wp_grp_size
||
637 conf
->user
.enh_start
% mmc
->hc_wp_grp_size
) {
638 printf("User data enhanced area not HC WP group "
642 part_attrs
|= EXT_CSD_ENH_USR
;
643 enh_size_mult
= conf
->user
.enh_size
/ mmc
->hc_wp_grp_size
;
644 if (mmc
->high_capacity
) {
645 enh_start_addr
= conf
->user
.enh_start
;
647 enh_start_addr
= (conf
->user
.enh_start
<< 9);
653 tot_enh_size_mult
+= enh_size_mult
;
655 for (pidx
= 0; pidx
< 4; pidx
++) {
656 if (conf
->gp_part
[pidx
].size
% mmc
->hc_wp_grp_size
) {
657 printf("GP%i partition not HC WP group size "
658 "aligned\n", pidx
+1);
661 gp_size_mult
[pidx
] = conf
->gp_part
[pidx
].size
/ mmc
->hc_wp_grp_size
;
662 if (conf
->gp_part
[pidx
].size
&& conf
->gp_part
[pidx
].enhanced
) {
663 part_attrs
|= EXT_CSD_ENH_GP(pidx
);
664 tot_enh_size_mult
+= gp_size_mult
[pidx
];
668 if (part_attrs
&& ! (mmc
->part_support
& ENHNCD_SUPPORT
)) {
669 printf("Card does not support enhanced attribute\n");
673 err
= mmc_send_ext_csd(mmc
, ext_csd
);
678 (ext_csd
[EXT_CSD_MAX_ENH_SIZE_MULT
+2] << 16) +
679 (ext_csd
[EXT_CSD_MAX_ENH_SIZE_MULT
+1] << 8) +
680 ext_csd
[EXT_CSD_MAX_ENH_SIZE_MULT
];
681 if (tot_enh_size_mult
> max_enh_size_mult
) {
682 printf("Total enhanced size exceeds maximum (%u > %u)\n",
683 tot_enh_size_mult
, max_enh_size_mult
);
687 /* The default value of EXT_CSD_WR_REL_SET is device
688 * dependent, the values can only be changed if the
689 * EXT_CSD_HS_CTRL_REL bit is set. The values can be
690 * changed only once and before partitioning is completed. */
691 wr_rel_set
= ext_csd
[EXT_CSD_WR_REL_SET
];
692 if (conf
->user
.wr_rel_change
) {
693 if (conf
->user
.wr_rel_set
)
694 wr_rel_set
|= EXT_CSD_WR_DATA_REL_USR
;
696 wr_rel_set
&= ~EXT_CSD_WR_DATA_REL_USR
;
698 for (pidx
= 0; pidx
< 4; pidx
++) {
699 if (conf
->gp_part
[pidx
].wr_rel_change
) {
700 if (conf
->gp_part
[pidx
].wr_rel_set
)
701 wr_rel_set
|= EXT_CSD_WR_DATA_REL_GP(pidx
);
703 wr_rel_set
&= ~EXT_CSD_WR_DATA_REL_GP(pidx
);
707 if (wr_rel_set
!= ext_csd
[EXT_CSD_WR_REL_SET
] &&
708 !(ext_csd
[EXT_CSD_WR_REL_PARAM
] & EXT_CSD_HS_CTRL_REL
)) {
709 puts("Card does not support host controlled partition write "
710 "reliability settings\n");
714 if (ext_csd
[EXT_CSD_PARTITION_SETTING
] &
715 EXT_CSD_PARTITION_SETTING_COMPLETED
) {
716 printf("Card already partitioned\n");
720 if (mode
== MMC_HWPART_CONF_CHECK
)
723 /* Partitioning requires high-capacity size definitions */
724 if (!(ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] & 0x01)) {
725 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
726 EXT_CSD_ERASE_GROUP_DEF
, 1);
731 ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] = 1;
733 /* update erase group size to be high-capacity */
734 mmc
->erase_grp_size
=
735 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] * 1024;
739 /* all OK, write the configuration */
740 for (i
= 0; i
< 4; i
++) {
741 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
742 EXT_CSD_ENH_START_ADDR
+i
,
743 (enh_start_addr
>> (i
*8)) & 0xFF);
747 for (i
= 0; i
< 3; i
++) {
748 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
749 EXT_CSD_ENH_SIZE_MULT
+i
,
750 (enh_size_mult
>> (i
*8)) & 0xFF);
754 for (pidx
= 0; pidx
< 4; pidx
++) {
755 for (i
= 0; i
< 3; i
++) {
756 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
757 EXT_CSD_GP_SIZE_MULT
+pidx
*3+i
,
758 (gp_size_mult
[pidx
] >> (i
*8)) & 0xFF);
763 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
764 EXT_CSD_PARTITIONS_ATTRIBUTE
, part_attrs
);
768 if (mode
== MMC_HWPART_CONF_SET
)
771 /* The WR_REL_SET is a write-once register but shall be
772 * written before setting PART_SETTING_COMPLETED. As it is
773 * write-once we can only write it when completing the
775 if (wr_rel_set
!= ext_csd
[EXT_CSD_WR_REL_SET
]) {
776 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
777 EXT_CSD_WR_REL_SET
, wr_rel_set
);
782 /* Setting PART_SETTING_COMPLETED confirms the partition
783 * configuration but it only becomes effective after power
784 * cycle, so we do not adjust the partition related settings
785 * in the mmc struct. */
787 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
788 EXT_CSD_PARTITION_SETTING
,
789 EXT_CSD_PARTITION_SETTING_COMPLETED
);
796 #ifndef CONFIG_DM_MMC_OPS
797 int mmc_getcd(struct mmc
*mmc
)
801 cd
= board_mmc_getcd(mmc
);
804 if (mmc
->cfg
->ops
->getcd
)
805 cd
= mmc
->cfg
->ops
->getcd(mmc
);
814 static int sd_switch(struct mmc
*mmc
, int mode
, int group
, u8 value
, u8
*resp
)
817 struct mmc_data data
;
819 /* Switch the frequency */
820 cmd
.cmdidx
= SD_CMD_SWITCH_FUNC
;
821 cmd
.resp_type
= MMC_RSP_R1
;
822 cmd
.cmdarg
= (mode
<< 31) | 0xffffff;
823 cmd
.cmdarg
&= ~(0xf << (group
* 4));
824 cmd
.cmdarg
|= value
<< (group
* 4);
826 data
.dest
= (char *)resp
;
829 data
.flags
= MMC_DATA_READ
;
831 return mmc_send_cmd(mmc
, &cmd
, &data
);
835 static int sd_change_freq(struct mmc
*mmc
)
839 ALLOC_CACHE_ALIGN_BUFFER(uint
, scr
, 2);
840 ALLOC_CACHE_ALIGN_BUFFER(uint
, switch_status
, 16);
841 struct mmc_data data
;
846 if (mmc_host_is_spi(mmc
))
849 /* Read the SCR to find out if this card supports higher speeds */
850 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
851 cmd
.resp_type
= MMC_RSP_R1
;
852 cmd
.cmdarg
= mmc
->rca
<< 16;
854 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
859 cmd
.cmdidx
= SD_CMD_APP_SEND_SCR
;
860 cmd
.resp_type
= MMC_RSP_R1
;
866 data
.dest
= (char *)scr
;
869 data
.flags
= MMC_DATA_READ
;
871 err
= mmc_send_cmd(mmc
, &cmd
, &data
);
880 mmc
->scr
[0] = __be32_to_cpu(scr
[0]);
881 mmc
->scr
[1] = __be32_to_cpu(scr
[1]);
883 switch ((mmc
->scr
[0] >> 24) & 0xf) {
885 mmc
->version
= SD_VERSION_1_0
;
888 mmc
->version
= SD_VERSION_1_10
;
891 mmc
->version
= SD_VERSION_2
;
892 if ((mmc
->scr
[0] >> 15) & 0x1)
893 mmc
->version
= SD_VERSION_3
;
896 mmc
->version
= SD_VERSION_1_0
;
900 if (mmc
->scr
[0] & SD_DATA_4BIT
)
901 mmc
->card_caps
|= MMC_MODE_4BIT
;
903 /* Version 1.0 doesn't support switching */
904 if (mmc
->version
== SD_VERSION_1_0
)
909 err
= sd_switch(mmc
, SD_SWITCH_CHECK
, 0, 1,
910 (u8
*)switch_status
);
915 /* The high-speed function is busy. Try again */
916 if (!(__be32_to_cpu(switch_status
[7]) & SD_HIGHSPEED_BUSY
))
920 /* If high-speed isn't supported, we return */
921 if (!(__be32_to_cpu(switch_status
[3]) & SD_HIGHSPEED_SUPPORTED
))
925 * If the host doesn't support SD_HIGHSPEED, do not switch card to
926 * HIGHSPEED mode even if the card support SD_HIGHSPPED.
927 * This can avoid furthur problem when the card runs in different
928 * mode between the host.
930 if (!((mmc
->cfg
->host_caps
& MMC_MODE_HS_52MHz
) &&
931 (mmc
->cfg
->host_caps
& MMC_MODE_HS
)))
934 err
= sd_switch(mmc
, SD_SWITCH_SWITCH
, 0, 1, (u8
*)switch_status
);
939 if ((__be32_to_cpu(switch_status
[4]) & 0x0f000000) == 0x01000000)
940 mmc
->card_caps
|= MMC_MODE_HS
;
945 /* frequency bases */
946 /* divided by 10 to be nice to platforms without floating point */
947 static const int fbase
[] = {
954 /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
955 * to platforms without floating point.
957 static const u8 multipliers
[] = {
976 #ifndef CONFIG_DM_MMC_OPS
977 static void mmc_set_ios(struct mmc
*mmc
)
979 if (mmc
->cfg
->ops
->set_ios
)
980 mmc
->cfg
->ops
->set_ios(mmc
);
984 void mmc_set_clock(struct mmc
*mmc
, uint clock
)
986 if (clock
> mmc
->cfg
->f_max
)
987 clock
= mmc
->cfg
->f_max
;
989 if (clock
< mmc
->cfg
->f_min
)
990 clock
= mmc
->cfg
->f_min
;
997 static void mmc_set_bus_width(struct mmc
*mmc
, uint width
)
999 mmc
->bus_width
= width
;
1004 static int mmc_startup(struct mmc
*mmc
)
1008 u64 cmult
, csize
, capacity
;
1010 ALLOC_CACHE_ALIGN_BUFFER(u8
, ext_csd
, MMC_MAX_BLOCK_LEN
);
1011 ALLOC_CACHE_ALIGN_BUFFER(u8
, test_csd
, MMC_MAX_BLOCK_LEN
);
1013 bool has_parts
= false;
1014 bool part_completed
;
1015 struct blk_desc
*bdesc
;
1017 #ifdef CONFIG_MMC_SPI_CRC_ON
1018 if (mmc_host_is_spi(mmc
)) { /* enable CRC check for spi */
1019 cmd
.cmdidx
= MMC_CMD_SPI_CRC_ON_OFF
;
1020 cmd
.resp_type
= MMC_RSP_R1
;
1022 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1029 /* Put the Card in Identify Mode */
1030 cmd
.cmdidx
= mmc_host_is_spi(mmc
) ? MMC_CMD_SEND_CID
:
1031 MMC_CMD_ALL_SEND_CID
; /* cmd not supported in spi */
1032 cmd
.resp_type
= MMC_RSP_R2
;
1035 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1040 memcpy(mmc
->cid
, cmd
.response
, 16);
1043 * For MMC cards, set the Relative Address.
1044 * For SD cards, get the Relatvie Address.
1045 * This also puts the cards into Standby State
1047 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
1048 cmd
.cmdidx
= SD_CMD_SEND_RELATIVE_ADDR
;
1049 cmd
.cmdarg
= mmc
->rca
<< 16;
1050 cmd
.resp_type
= MMC_RSP_R6
;
1052 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1058 mmc
->rca
= (cmd
.response
[0] >> 16) & 0xffff;
1061 /* Get the Card-Specific Data */
1062 cmd
.cmdidx
= MMC_CMD_SEND_CSD
;
1063 cmd
.resp_type
= MMC_RSP_R2
;
1064 cmd
.cmdarg
= mmc
->rca
<< 16;
1066 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1068 /* Waiting for the ready status */
1069 mmc_send_status(mmc
, timeout
);
1074 mmc
->csd
[0] = cmd
.response
[0];
1075 mmc
->csd
[1] = cmd
.response
[1];
1076 mmc
->csd
[2] = cmd
.response
[2];
1077 mmc
->csd
[3] = cmd
.response
[3];
1079 if (mmc
->version
== MMC_VERSION_UNKNOWN
) {
1080 int version
= (cmd
.response
[0] >> 26) & 0xf;
1084 mmc
->version
= MMC_VERSION_1_2
;
1087 mmc
->version
= MMC_VERSION_1_4
;
1090 mmc
->version
= MMC_VERSION_2_2
;
1093 mmc
->version
= MMC_VERSION_3
;
1096 mmc
->version
= MMC_VERSION_4
;
1099 mmc
->version
= MMC_VERSION_1_2
;
1104 /* divide frequency by 10, since the mults are 10x bigger */
1105 freq
= fbase
[(cmd
.response
[0] & 0x7)];
1106 mult
= multipliers
[((cmd
.response
[0] >> 3) & 0xf)];
1108 mmc
->tran_speed
= freq
* mult
;
1110 mmc
->dsr_imp
= ((cmd
.response
[1] >> 12) & 0x1);
1111 mmc
->read_bl_len
= 1 << ((cmd
.response
[1] >> 16) & 0xf);
1114 mmc
->write_bl_len
= mmc
->read_bl_len
;
1116 mmc
->write_bl_len
= 1 << ((cmd
.response
[3] >> 22) & 0xf);
1118 if (mmc
->high_capacity
) {
1119 csize
= (mmc
->csd
[1] & 0x3f) << 16
1120 | (mmc
->csd
[2] & 0xffff0000) >> 16;
1123 csize
= (mmc
->csd
[1] & 0x3ff) << 2
1124 | (mmc
->csd
[2] & 0xc0000000) >> 30;
1125 cmult
= (mmc
->csd
[2] & 0x00038000) >> 15;
1128 mmc
->capacity_user
= (csize
+ 1) << (cmult
+ 2);
1129 mmc
->capacity_user
*= mmc
->read_bl_len
;
1130 mmc
->capacity_boot
= 0;
1131 mmc
->capacity_rpmb
= 0;
1132 for (i
= 0; i
< 4; i
++)
1133 mmc
->capacity_gp
[i
] = 0;
1135 if (mmc
->read_bl_len
> MMC_MAX_BLOCK_LEN
)
1136 mmc
->read_bl_len
= MMC_MAX_BLOCK_LEN
;
1138 if (mmc
->write_bl_len
> MMC_MAX_BLOCK_LEN
)
1139 mmc
->write_bl_len
= MMC_MAX_BLOCK_LEN
;
1141 if ((mmc
->dsr_imp
) && (0xffffffff != mmc
->dsr
)) {
1142 cmd
.cmdidx
= MMC_CMD_SET_DSR
;
1143 cmd
.cmdarg
= (mmc
->dsr
& 0xffff) << 16;
1144 cmd
.resp_type
= MMC_RSP_NONE
;
1145 if (mmc_send_cmd(mmc
, &cmd
, NULL
))
1146 printf("MMC: SET_DSR failed\n");
1149 /* Select the card, and put it into Transfer Mode */
1150 if (!mmc_host_is_spi(mmc
)) { /* cmd not supported in spi */
1151 cmd
.cmdidx
= MMC_CMD_SELECT_CARD
;
1152 cmd
.resp_type
= MMC_RSP_R1
;
1153 cmd
.cmdarg
= mmc
->rca
<< 16;
1154 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1161 * For SD, its erase group is always one sector
1163 mmc
->erase_grp_size
= 1;
1164 mmc
->part_config
= MMCPART_NOAVAILABLE
;
1165 if (!IS_SD(mmc
) && (mmc
->version
>= MMC_VERSION_4
)) {
1166 /* check ext_csd version and capacity */
1167 err
= mmc_send_ext_csd(mmc
, ext_csd
);
1170 if (ext_csd
[EXT_CSD_REV
] >= 2) {
1172 * According to the JEDEC Standard, the value of
1173 * ext_csd's capacity is valid if the value is more
1176 capacity
= ext_csd
[EXT_CSD_SEC_CNT
] << 0
1177 | ext_csd
[EXT_CSD_SEC_CNT
+ 1] << 8
1178 | ext_csd
[EXT_CSD_SEC_CNT
+ 2] << 16
1179 | ext_csd
[EXT_CSD_SEC_CNT
+ 3] << 24;
1180 capacity
*= MMC_MAX_BLOCK_LEN
;
1181 if ((capacity
>> 20) > 2 * 1024)
1182 mmc
->capacity_user
= capacity
;
1185 switch (ext_csd
[EXT_CSD_REV
]) {
1187 mmc
->version
= MMC_VERSION_4_1
;
1190 mmc
->version
= MMC_VERSION_4_2
;
1193 mmc
->version
= MMC_VERSION_4_3
;
1196 mmc
->version
= MMC_VERSION_4_41
;
1199 mmc
->version
= MMC_VERSION_4_5
;
1202 mmc
->version
= MMC_VERSION_5_0
;
1205 mmc
->version
= MMC_VERSION_5_1
;
1209 /* The partition data may be non-zero but it is only
1210 * effective if PARTITION_SETTING_COMPLETED is set in
1211 * EXT_CSD, so ignore any data if this bit is not set,
1212 * except for enabling the high-capacity group size
1213 * definition (see below). */
1214 part_completed
= !!(ext_csd
[EXT_CSD_PARTITION_SETTING
] &
1215 EXT_CSD_PARTITION_SETTING_COMPLETED
);
1217 /* store the partition info of emmc */
1218 mmc
->part_support
= ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
];
1219 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) ||
1220 ext_csd
[EXT_CSD_BOOT_MULT
])
1221 mmc
->part_config
= ext_csd
[EXT_CSD_PART_CONF
];
1222 if (part_completed
&&
1223 (ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & ENHNCD_SUPPORT
))
1224 mmc
->part_attr
= ext_csd
[EXT_CSD_PARTITIONS_ATTRIBUTE
];
1226 mmc
->capacity_boot
= ext_csd
[EXT_CSD_BOOT_MULT
] << 17;
1228 mmc
->capacity_rpmb
= ext_csd
[EXT_CSD_RPMB_MULT
] << 17;
1230 for (i
= 0; i
< 4; i
++) {
1231 int idx
= EXT_CSD_GP_SIZE_MULT
+ i
* 3;
1232 uint mult
= (ext_csd
[idx
+ 2] << 16) +
1233 (ext_csd
[idx
+ 1] << 8) + ext_csd
[idx
];
1236 if (!part_completed
)
1238 mmc
->capacity_gp
[i
] = mult
;
1239 mmc
->capacity_gp
[i
] *=
1240 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
];
1241 mmc
->capacity_gp
[i
] *= ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
];
1242 mmc
->capacity_gp
[i
] <<= 19;
1245 if (part_completed
) {
1246 mmc
->enh_user_size
=
1247 (ext_csd
[EXT_CSD_ENH_SIZE_MULT
+2] << 16) +
1248 (ext_csd
[EXT_CSD_ENH_SIZE_MULT
+1] << 8) +
1249 ext_csd
[EXT_CSD_ENH_SIZE_MULT
];
1250 mmc
->enh_user_size
*= ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
];
1251 mmc
->enh_user_size
*= ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
];
1252 mmc
->enh_user_size
<<= 19;
1253 mmc
->enh_user_start
=
1254 (ext_csd
[EXT_CSD_ENH_START_ADDR
+3] << 24) +
1255 (ext_csd
[EXT_CSD_ENH_START_ADDR
+2] << 16) +
1256 (ext_csd
[EXT_CSD_ENH_START_ADDR
+1] << 8) +
1257 ext_csd
[EXT_CSD_ENH_START_ADDR
];
1258 if (mmc
->high_capacity
)
1259 mmc
->enh_user_start
<<= 9;
1263 * Host needs to enable ERASE_GRP_DEF bit if device is
1264 * partitioned. This bit will be lost every time after a reset
1265 * or power off. This will affect erase size.
1269 if ((ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
] & PART_SUPPORT
) &&
1270 (ext_csd
[EXT_CSD_PARTITIONS_ATTRIBUTE
] & PART_ENH_ATTRIB
))
1273 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1274 EXT_CSD_ERASE_GROUP_DEF
, 1);
1279 ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] = 1;
1282 if (ext_csd
[EXT_CSD_ERASE_GROUP_DEF
] & 0x01) {
1283 /* Read out group size from ext_csd */
1284 mmc
->erase_grp_size
=
1285 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] * 1024;
1287 * if high capacity and partition setting completed
1288 * SEC_COUNT is valid even if it is smaller than 2 GiB
1289 * JEDEC Standard JESD84-B45, 6.2.4
1291 if (mmc
->high_capacity
&& part_completed
) {
1292 capacity
= (ext_csd
[EXT_CSD_SEC_CNT
]) |
1293 (ext_csd
[EXT_CSD_SEC_CNT
+ 1] << 8) |
1294 (ext_csd
[EXT_CSD_SEC_CNT
+ 2] << 16) |
1295 (ext_csd
[EXT_CSD_SEC_CNT
+ 3] << 24);
1296 capacity
*= MMC_MAX_BLOCK_LEN
;
1297 mmc
->capacity_user
= capacity
;
1300 /* Calculate the group size from the csd value. */
1301 int erase_gsz
, erase_gmul
;
1302 erase_gsz
= (mmc
->csd
[2] & 0x00007c00) >> 10;
1303 erase_gmul
= (mmc
->csd
[2] & 0x000003e0) >> 5;
1304 mmc
->erase_grp_size
= (erase_gsz
+ 1)
1308 mmc
->hc_wp_grp_size
= 1024
1309 * ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
]
1310 * ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
];
1312 mmc
->wr_rel_set
= ext_csd
[EXT_CSD_WR_REL_SET
];
1315 err
= mmc_set_capacity(mmc
, mmc_get_blk_desc(mmc
)->hwpart
);
1320 err
= sd_change_freq(mmc
);
1322 err
= mmc_change_freq(mmc
);
1327 /* Restrict card's capabilities by what the host can do */
1328 mmc
->card_caps
&= mmc
->cfg
->host_caps
;
1331 if (mmc
->card_caps
& MMC_MODE_4BIT
) {
1332 cmd
.cmdidx
= MMC_CMD_APP_CMD
;
1333 cmd
.resp_type
= MMC_RSP_R1
;
1334 cmd
.cmdarg
= mmc
->rca
<< 16;
1336 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1340 cmd
.cmdidx
= SD_CMD_APP_SET_BUS_WIDTH
;
1341 cmd
.resp_type
= MMC_RSP_R1
;
1343 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1347 mmc_set_bus_width(mmc
, 4);
1350 if (mmc
->card_caps
& MMC_MODE_HS
)
1351 mmc
->tran_speed
= 50000000;
1353 mmc
->tran_speed
= 25000000;
1354 } else if (mmc
->version
>= MMC_VERSION_4
) {
1355 /* Only version 4 of MMC supports wider bus widths */
1358 /* An array of possible bus widths in order of preference */
1359 static unsigned ext_csd_bits
[] = {
1360 EXT_CSD_DDR_BUS_WIDTH_8
,
1361 EXT_CSD_DDR_BUS_WIDTH_4
,
1362 EXT_CSD_BUS_WIDTH_8
,
1363 EXT_CSD_BUS_WIDTH_4
,
1364 EXT_CSD_BUS_WIDTH_1
,
1367 /* An array to map CSD bus widths to host cap bits */
1368 static unsigned ext_to_hostcaps
[] = {
1369 [EXT_CSD_DDR_BUS_WIDTH_4
] =
1370 MMC_MODE_DDR_52MHz
| MMC_MODE_4BIT
,
1371 [EXT_CSD_DDR_BUS_WIDTH_8
] =
1372 MMC_MODE_DDR_52MHz
| MMC_MODE_8BIT
,
1373 [EXT_CSD_BUS_WIDTH_4
] = MMC_MODE_4BIT
,
1374 [EXT_CSD_BUS_WIDTH_8
] = MMC_MODE_8BIT
,
1377 /* An array to map chosen bus width to an integer */
1378 static unsigned widths
[] = {
1382 for (idx
=0; idx
< ARRAY_SIZE(ext_csd_bits
); idx
++) {
1383 unsigned int extw
= ext_csd_bits
[idx
];
1384 unsigned int caps
= ext_to_hostcaps
[extw
];
1387 * If the bus width is still not changed,
1388 * don't try to set the default again.
1389 * Otherwise, recover from switch attempts
1390 * by switching to 1-bit bus width.
1392 if (extw
== EXT_CSD_BUS_WIDTH_1
&&
1393 mmc
->bus_width
== 1) {
1399 * Check to make sure the card and controller support
1400 * these capabilities
1402 if ((mmc
->card_caps
& caps
) != caps
)
1405 err
= mmc_switch(mmc
, EXT_CSD_CMD_SET_NORMAL
,
1406 EXT_CSD_BUS_WIDTH
, extw
);
1411 mmc
->ddr_mode
= (caps
& MMC_MODE_DDR_52MHz
) ? 1 : 0;
1412 mmc_set_bus_width(mmc
, widths
[idx
]);
1414 err
= mmc_send_ext_csd(mmc
, test_csd
);
1419 /* Only compare read only fields */
1420 if (ext_csd
[EXT_CSD_PARTITIONING_SUPPORT
]
1421 == test_csd
[EXT_CSD_PARTITIONING_SUPPORT
] &&
1422 ext_csd
[EXT_CSD_HC_WP_GRP_SIZE
]
1423 == test_csd
[EXT_CSD_HC_WP_GRP_SIZE
] &&
1424 ext_csd
[EXT_CSD_REV
]
1425 == test_csd
[EXT_CSD_REV
] &&
1426 ext_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
]
1427 == test_csd
[EXT_CSD_HC_ERASE_GRP_SIZE
] &&
1428 memcmp(&ext_csd
[EXT_CSD_SEC_CNT
],
1429 &test_csd
[EXT_CSD_SEC_CNT
], 4) == 0)
1438 if (mmc
->card_caps
& MMC_MODE_HS
) {
1439 if (mmc
->card_caps
& MMC_MODE_HS_52MHz
)
1440 mmc
->tran_speed
= 52000000;
1442 mmc
->tran_speed
= 26000000;
1446 mmc_set_clock(mmc
, mmc
->tran_speed
);
1448 /* Fix the block length for DDR mode */
1449 if (mmc
->ddr_mode
) {
1450 mmc
->read_bl_len
= MMC_MAX_BLOCK_LEN
;
1451 mmc
->write_bl_len
= MMC_MAX_BLOCK_LEN
;
1454 /* fill in device description */
1455 bdesc
= mmc_get_blk_desc(mmc
);
1459 bdesc
->blksz
= mmc
->read_bl_len
;
1460 bdesc
->log2blksz
= LOG2(bdesc
->blksz
);
1461 bdesc
->lba
= lldiv(mmc
->capacity
, mmc
->read_bl_len
);
1462 #if !defined(CONFIG_SPL_BUILD) || \
1463 (defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \
1464 !defined(CONFIG_USE_TINY_PRINTF))
1465 sprintf(bdesc
->vendor
, "Man %06x Snr %04x%04x",
1466 mmc
->cid
[0] >> 24, (mmc
->cid
[2] & 0xffff),
1467 (mmc
->cid
[3] >> 16) & 0xffff);
1468 sprintf(bdesc
->product
, "%c%c%c%c%c%c", mmc
->cid
[0] & 0xff,
1469 (mmc
->cid
[1] >> 24), (mmc
->cid
[1] >> 16) & 0xff,
1470 (mmc
->cid
[1] >> 8) & 0xff, mmc
->cid
[1] & 0xff,
1471 (mmc
->cid
[2] >> 24) & 0xff);
1472 sprintf(bdesc
->revision
, "%d.%d", (mmc
->cid
[2] >> 20) & 0xf,
1473 (mmc
->cid
[2] >> 16) & 0xf);
1475 bdesc
->vendor
[0] = 0;
1476 bdesc
->product
[0] = 0;
1477 bdesc
->revision
[0] = 0;
1479 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
1486 static int mmc_send_if_cond(struct mmc
*mmc
)
1491 cmd
.cmdidx
= SD_CMD_SEND_IF_COND
;
1492 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
1493 cmd
.cmdarg
= ((mmc
->cfg
->voltages
& 0xff8000) != 0) << 8 | 0xaa;
1494 cmd
.resp_type
= MMC_RSP_R7
;
1496 err
= mmc_send_cmd(mmc
, &cmd
, NULL
);
1501 if ((cmd
.response
[0] & 0xff) != 0xaa)
1502 return UNUSABLE_ERR
;
1504 mmc
->version
= SD_VERSION_2
;
1509 /* board-specific MMC power initializations. */
1510 __weak
void board_mmc_power_init(void)
1514 int mmc_start_init(struct mmc
*mmc
)
1519 /* we pretend there's no card when init is NULL */
1520 no_card
= mmc_getcd(mmc
) == 0;
1521 #ifndef CONFIG_DM_MMC_OPS
1522 no_card
= no_card
|| (mmc
->cfg
->ops
->init
== NULL
);
1526 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1527 printf("MMC: no card present\n");
1535 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
1536 mmc_adapter_card_type_ident();
1538 board_mmc_power_init();
1540 #ifdef CONFIG_DM_MMC_OPS
1541 /* The device has already been probed ready for use */
1543 /* made sure it's not NULL earlier */
1544 err
= mmc
->cfg
->ops
->init(mmc
);
1549 mmc_set_bus_width(mmc
, 1);
1550 mmc_set_clock(mmc
, 1);
1552 /* Reset the Card */
1553 err
= mmc_go_idle(mmc
);
1558 /* The internal partition reset to user partition(0) at every CMD0*/
1559 mmc_get_blk_desc(mmc
)->hwpart
= 0;
1561 /* Test for SD version 2 */
1562 err
= mmc_send_if_cond(mmc
);
1564 /* Now try to get the SD card's operating condition */
1565 err
= sd_send_op_cond(mmc
);
1567 /* If the command timed out, we check for an MMC card */
1568 if (err
== TIMEOUT
) {
1569 err
= mmc_send_op_cond(mmc
);
1572 #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
1573 printf("Card did not respond to voltage select!\n");
1575 return UNUSABLE_ERR
;
1580 mmc
->init_in_progress
= 1;
1585 static int mmc_complete_init(struct mmc
*mmc
)
1589 mmc
->init_in_progress
= 0;
1590 if (mmc
->op_cond_pending
)
1591 err
= mmc_complete_op_cond(mmc
);
1594 err
= mmc_startup(mmc
);
1602 int mmc_init(struct mmc
*mmc
)
1606 #ifdef CONFIG_DM_MMC
1607 struct mmc_uclass_priv
*upriv
= dev_get_uclass_priv(mmc
->dev
);
1614 start
= get_timer(0);
1616 if (!mmc
->init_in_progress
)
1617 err
= mmc_start_init(mmc
);
1620 err
= mmc_complete_init(mmc
);
1621 debug("%s: %d, time %lu\n", __func__
, err
, get_timer(start
));
1625 int mmc_set_dsr(struct mmc
*mmc
, u16 val
)
1631 /* CPU-specific MMC initializations */
1632 __weak
int cpu_mmc_init(bd_t
*bis
)
1637 /* board-specific MMC initializations. */
1638 __weak
int board_mmc_init(bd_t
*bis
)
1643 void mmc_set_preinit(struct mmc
*mmc
, int preinit
)
1645 mmc
->preinit
= preinit
;
1648 #if defined(CONFIG_DM_MMC) && defined(CONFIG_SPL_BUILD)
1649 static int mmc_probe(bd_t
*bis
)
1653 #elif defined(CONFIG_DM_MMC)
1654 static int mmc_probe(bd_t
*bis
)
1658 struct udevice
*dev
;
1660 ret
= uclass_get(UCLASS_MMC
, &uc
);
1665 * Try to add them in sequence order. Really with driver model we
1666 * should allow holes, but the current MMC list does not allow that.
1667 * So if we request 0, 1, 3 we will get 0, 1, 2.
1669 for (i
= 0; ; i
++) {
1670 ret
= uclass_get_device_by_seq(UCLASS_MMC
, i
, &dev
);
1674 uclass_foreach_dev(dev
, uc
) {
1675 ret
= device_probe(dev
);
1677 printf("%s - probe failed: %d\n", dev
->name
, ret
);
1683 static int mmc_probe(bd_t
*bis
)
1685 if (board_mmc_init(bis
) < 0)
1692 int mmc_initialize(bd_t
*bis
)
1694 static int initialized
= 0;
1696 if (initialized
) /* Avoid initializing mmc multiple times */
1703 ret
= mmc_probe(bis
);
1707 #ifndef CONFIG_SPL_BUILD
1708 print_mmc_devices(',');