1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
4 * Copyright 2019 NXP Semiconductors
7 * Based vaguely on the pxa mmc code:
9 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
21 #include <fsl_esdhc.h>
22 #include <fdt_support.h>
26 DECLARE_GLOBAL_DATA_PTR;
29 uint dsaddr; /* SDMA system address register */
30 uint blkattr; /* Block attributes register */
31 uint cmdarg; /* Command argument register */
32 uint xfertyp; /* Transfer type register */
33 uint cmdrsp0; /* Command response 0 register */
34 uint cmdrsp1; /* Command response 1 register */
35 uint cmdrsp2; /* Command response 2 register */
36 uint cmdrsp3; /* Command response 3 register */
37 uint datport; /* Buffer data port register */
38 uint prsstat; /* Present state register */
39 uint proctl; /* Protocol control register */
40 uint sysctl; /* System Control Register */
41 uint irqstat; /* Interrupt status register */
42 uint irqstaten; /* Interrupt status enable register */
43 uint irqsigen; /* Interrupt signal enable register */
44 uint autoc12err; /* Auto CMD error status register */
45 uint hostcapblt; /* Host controller capabilities register */
46 uint wml; /* Watermark level register */
47 char reserved1[8]; /* reserved */
48 uint fevt; /* Force event register */
49 uint admaes; /* ADMA error status register */
50 uint adsaddr; /* ADMA system address register */
52 uint hostver; /* Host controller version register */
53 char reserved3[4]; /* reserved */
54 uint dmaerraddr; /* DMA error address register */
55 char reserved4[4]; /* reserved */
56 uint dmaerrattr; /* DMA error attribute register */
57 char reserved5[4]; /* reserved */
58 uint hostcapblt2; /* Host controller capabilities register 2 */
59 char reserved6[756]; /* reserved */
60 uint esdhcctl; /* eSDHC control register */
63 struct fsl_esdhc_plat {
64 struct mmc_config cfg;
69 * struct fsl_esdhc_priv
71 * @esdhc_regs: registers of the sdhc controller
72 * @sdhc_clk: Current clk of the sdhc controller
73 * @bus_width: bus width, 1bit, 4bit or 8bit
76 * Following is used when Driver Model is enabled for MMC
77 * @dev: pointer for the device
78 * @cd_gpio: gpio for card detection
79 * @wp_gpio: gpio for write protection
81 struct fsl_esdhc_priv {
82 struct fsl_esdhc *esdhc_regs;
83 unsigned int sdhc_clk;
85 #if !CONFIG_IS_ENABLED(DM_MMC)
91 /* Return the XFERTYP flags for a given command and data packet */
92 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
97 xfertyp |= XFERTYP_DPSEL;
98 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
99 xfertyp |= XFERTYP_DMAEN;
101 if (data->blocks > 1) {
102 xfertyp |= XFERTYP_MSBSEL;
103 xfertyp |= XFERTYP_BCEN;
104 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
105 xfertyp |= XFERTYP_AC12EN;
109 if (data->flags & MMC_DATA_READ)
110 xfertyp |= XFERTYP_DTDSEL;
113 if (cmd->resp_type & MMC_RSP_CRC)
114 xfertyp |= XFERTYP_CCCEN;
115 if (cmd->resp_type & MMC_RSP_OPCODE)
116 xfertyp |= XFERTYP_CICEN;
117 if (cmd->resp_type & MMC_RSP_136)
118 xfertyp |= XFERTYP_RSPTYP_136;
119 else if (cmd->resp_type & MMC_RSP_BUSY)
120 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
121 else if (cmd->resp_type & MMC_RSP_PRESENT)
122 xfertyp |= XFERTYP_RSPTYP_48;
124 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
125 xfertyp |= XFERTYP_CMDTYP_ABORT;
127 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
130 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
132 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
134 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
135 struct mmc_data *data)
137 struct fsl_esdhc *regs = priv->esdhc_regs;
145 if (data->flags & MMC_DATA_READ) {
146 blocks = data->blocks;
149 start = get_timer(0);
150 size = data->blocksize;
151 irqstat = esdhc_read32(®s->irqstat);
152 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
153 if (get_timer(start) > PIO_TIMEOUT) {
154 printf("\nData Read Failed in PIO Mode.");
158 while (size && (!(irqstat & IRQSTAT_TC))) {
159 udelay(100); /* Wait before last byte transfer complete */
160 irqstat = esdhc_read32(®s->irqstat);
161 databuf = in_le32(®s->datport);
162 *((uint *)buffer) = databuf;
169 blocks = data->blocks;
170 buffer = (char *)data->src;
172 start = get_timer(0);
173 size = data->blocksize;
174 irqstat = esdhc_read32(®s->irqstat);
175 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
176 if (get_timer(start) > PIO_TIMEOUT) {
177 printf("\nData Write Failed in PIO Mode.");
181 while (size && (!(irqstat & IRQSTAT_TC))) {
182 udelay(100); /* Wait before last byte transfer complete */
183 databuf = *((uint *)buffer);
186 irqstat = esdhc_read32(®s->irqstat);
187 out_le32(®s->datport, databuf);
195 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
196 struct mmc_data *data)
199 struct fsl_esdhc *regs = priv->esdhc_regs;
200 #if defined(CONFIG_FSL_LAYERSCAPE)
205 wml_value = data->blocksize/4;
207 if (data->flags & MMC_DATA_READ) {
208 if (wml_value > WML_RD_WML_MAX)
209 wml_value = WML_RD_WML_MAX_VAL;
211 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
212 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
213 #if defined(CONFIG_FSL_LAYERSCAPE)
214 addr = virt_to_phys((void *)(data->dest));
215 if (upper_32_bits(addr))
216 printf("Error found for upper 32 bits\n");
218 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
220 esdhc_write32(®s->dsaddr, (u32)data->dest);
224 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
225 flush_dcache_range((ulong)data->src,
226 (ulong)data->src+data->blocks
229 if (wml_value > WML_WR_WML_MAX)
230 wml_value = WML_WR_WML_MAX_VAL;
232 if (!(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) {
233 printf("Can not write to locked SD card.\n");
237 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
239 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
240 #if defined(CONFIG_FSL_LAYERSCAPE)
241 addr = virt_to_phys((void *)(data->src));
242 if (upper_32_bits(addr))
243 printf("Error found for upper 32 bits\n");
245 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
247 esdhc_write32(®s->dsaddr, (u32)data->src);
252 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
254 /* Calculate the timeout period for data transactions */
256 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
257 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
258 * So, Number of SD Clock cycles for 0.25sec should be minimum
259 * (SD Clock/sec * 0.25 sec) SD Clock cycles
260 * = (mmc->clock * 1/4) SD Clock cycles
262 * => (2^(timeout+13)) >= mmc->clock * 1/4
263 * Taking log2 both the sides
264 * => timeout + 13 >= log2(mmc->clock/4)
265 * Rounding up to next power of 2
266 * => timeout + 13 = log2(mmc->clock/4) + 1
267 * => timeout + 13 = fls(mmc->clock/4)
269 * However, the MMC spec "It is strongly recommended for hosts to
270 * implement more than 500ms timeout value even if the card
271 * indicates the 250ms maximum busy length." Even the previous
272 * value of 300ms is known to be insufficient for some cards.
274 * => timeout + 13 = fls(mmc->clock/2)
276 timeout = fls(mmc->clock/2);
285 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC_A001
286 if ((timeout == 4) || (timeout == 8) || (timeout == 12))
290 #ifdef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
293 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
298 static void check_and_invalidate_dcache_range
299 (struct mmc_cmd *cmd,
300 struct mmc_data *data) {
303 unsigned size = roundup(ARCH_DMA_MINALIGN,
304 data->blocks*data->blocksize);
305 #if defined(CONFIG_FSL_LAYERSCAPE)
308 addr = virt_to_phys((void *)(data->dest));
309 if (upper_32_bits(addr))
310 printf("Error found for upper 32 bits\n");
312 start = lower_32_bits(addr);
314 start = (unsigned)data->dest;
317 invalidate_dcache_range(start, end);
321 * Sends a command out on the bus. Takes the mmc pointer,
322 * a command pointer, and an optional data pointer.
324 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
325 struct mmc_cmd *cmd, struct mmc_data *data)
330 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
331 struct fsl_esdhc *regs = priv->esdhc_regs;
334 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
335 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
339 esdhc_write32(®s->irqstat, -1);
343 /* Wait for the bus to be idle */
344 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
345 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
348 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
351 /* Wait at least 8 SD clock cycles before the next command */
353 * Note: This is way more than 8 cycles, but 1ms seems to
354 * resolve timing issues with some cards
358 /* Set up for a data transfer if we have one */
360 err = esdhc_setup_data(priv, mmc, data);
364 if (data->flags & MMC_DATA_READ)
365 check_and_invalidate_dcache_range(cmd, data);
368 /* Figure out the transfer arguments */
369 xfertyp = esdhc_xfertyp(cmd, data);
372 esdhc_write32(®s->irqsigen, 0);
374 /* Send the command */
375 esdhc_write32(®s->cmdarg, cmd->cmdarg);
376 esdhc_write32(®s->xfertyp, xfertyp);
378 /* Wait for the command to complete */
379 start = get_timer(0);
380 while (!(esdhc_read32(®s->irqstat) & flags)) {
381 if (get_timer(start) > 1000) {
387 irqstat = esdhc_read32(®s->irqstat);
389 if (irqstat & CMD_ERR) {
394 if (irqstat & IRQSTAT_CTOE) {
399 /* Workaround for ESDHC errata ENGcm03648 */
400 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
403 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
404 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
411 printf("Timeout waiting for DAT0 to go high!\n");
417 /* Copy the response to the response buffer */
418 if (cmd->resp_type & MMC_RSP_136) {
419 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
421 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
422 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
423 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
424 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
425 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
426 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
427 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
428 cmd->response[3] = (cmdrsp0 << 8);
430 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
432 /* Wait until all of the blocks are transferred */
434 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
435 esdhc_pio_read_write(priv, data);
438 irqstat = esdhc_read32(®s->irqstat);
440 if (irqstat & IRQSTAT_DTOE) {
445 if (irqstat & DATA_ERR) {
449 } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE);
452 * Need invalidate the dcache here again to avoid any
453 * cache-fill during the DMA operations such as the
454 * speculative pre-fetching etc.
456 if (data->flags & MMC_DATA_READ) {
457 check_and_invalidate_dcache_range(cmd, data);
463 /* Reset CMD and DATA portions on error */
465 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
467 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
471 esdhc_write32(®s->sysctl,
472 esdhc_read32(®s->sysctl) |
474 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
479 esdhc_write32(®s->irqstat, -1);
484 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
486 struct fsl_esdhc *regs = priv->esdhc_regs;
489 unsigned int sdhc_clk = priv->sdhc_clk;
494 if (clock < mmc->cfg->f_min)
495 clock = mmc->cfg->f_min;
497 while (sdhc_clk / (16 * pre_div) > clock && pre_div < 256)
500 while (sdhc_clk / (div * pre_div) > clock && div < 16)
506 clk = (pre_div << 8) | (div << 4);
508 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
510 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
513 value = PRSSTAT_SDSTB;
514 while (!(esdhc_read32(®s->prsstat) & value)) {
516 printf("fsl_esdhc: Internal clock never stabilised.\n");
523 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
526 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
527 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
529 struct fsl_esdhc *regs = priv->esdhc_regs;
533 value = esdhc_read32(®s->sysctl);
536 value |= SYSCTL_CKEN;
538 value &= ~SYSCTL_CKEN;
540 esdhc_write32(®s->sysctl, value);
543 value = PRSSTAT_SDSTB;
544 while (!(esdhc_read32(®s->prsstat) & value)) {
546 printf("fsl_esdhc: Internal clock never stabilised.\n");
555 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
557 struct fsl_esdhc *regs = priv->esdhc_regs;
559 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
560 /* Select to use peripheral clock */
561 esdhc_clock_control(priv, false);
562 esdhc_setbits32(®s->esdhcctl, ESDHCCTL_PCS);
563 esdhc_clock_control(priv, true);
565 /* Set the clock speed */
566 if (priv->clock != mmc->clock)
567 set_sysctl(priv, mmc, mmc->clock);
569 /* Set the bus width */
570 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
572 if (mmc->bus_width == 4)
573 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
574 else if (mmc->bus_width == 8)
575 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
580 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
582 struct fsl_esdhc *regs = priv->esdhc_regs;
585 /* Reset the entire host controller */
586 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
588 /* Wait until the controller is available */
589 start = get_timer(0);
590 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
591 if (get_timer(start) > 1000)
595 /* Enable cache snooping */
596 esdhc_write32(®s->esdhcctl, 0x00000040);
598 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
600 /* Set the initial clock speed */
601 mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
603 /* Disable the BRR and BWR bits in IRQSTAT */
604 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
606 /* Put the PROCTL reg back to the default */
607 esdhc_write32(®s->proctl, PROCTL_INIT);
609 /* Set timout to the maximum value */
610 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
615 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
617 struct fsl_esdhc *regs = priv->esdhc_regs;
620 #ifdef CONFIG_ESDHC_DETECT_QUIRK
621 if (CONFIG_ESDHC_DETECT_QUIRK)
624 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
630 static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,
631 struct mmc_config *cfg)
633 struct fsl_esdhc *regs = priv->esdhc_regs;
636 caps = esdhc_read32(®s->hostcapblt);
637 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
638 caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
640 #ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
641 caps |= HOSTCAPBLT_VS33;
643 if (caps & HOSTCAPBLT_VS18)
644 cfg->voltages |= MMC_VDD_165_195;
645 if (caps & HOSTCAPBLT_VS30)
646 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
647 if (caps & HOSTCAPBLT_VS33)
648 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
650 cfg->name = "FSL_SDHC";
652 if (caps & HOSTCAPBLT_HSS)
653 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
656 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
657 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
660 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
661 void mmc_adapter_card_type_ident(void)
666 card_id = QIXIS_READ(present) & QIXIS_SDID_MASK;
667 gd->arch.sdhc_adapter = card_id;
670 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
671 value = QIXIS_READ(brdcfg[5]);
672 value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
673 QIXIS_WRITE(brdcfg[5], value);
675 case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
676 value = QIXIS_READ(pwr_ctl[1]);
677 value |= QIXIS_EVDD_BY_SDHC_VS;
678 QIXIS_WRITE(pwr_ctl[1], value);
680 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44:
681 value = QIXIS_READ(brdcfg[5]);
682 value |= (QIXIS_SDCLKIN | QIXIS_SDCLKOUT);
683 QIXIS_WRITE(brdcfg[5], value);
685 case QIXIS_ESDHC_ADAPTER_TYPE_RSV:
687 case QIXIS_ESDHC_ADAPTER_TYPE_MMC:
689 case QIXIS_ESDHC_ADAPTER_TYPE_SD:
691 case QIXIS_ESDHC_NO_ADAPTER:
699 #ifdef CONFIG_OF_LIBFDT
700 __weak int esdhc_status_fixup(void *blob, const char *compat)
702 #ifdef CONFIG_FSL_ESDHC_PIN_MUX
703 if (!hwconfig("esdhc")) {
704 do_fixup_by_compat(blob, compat, "status", "disabled",
705 sizeof("disabled"), 1);
712 void fdt_fixup_esdhc(void *blob, bd_t *bd)
714 const char *compat = "fsl,esdhc";
716 if (esdhc_status_fixup(blob, compat))
719 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
720 do_fixup_by_compat_u32(blob, compat, "peripheral-frequency",
721 gd->arch.sdhc_clk, 1);
723 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
724 gd->arch.sdhc_clk, 1);
726 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
727 do_fixup_by_compat_u32(blob, compat, "adapter-type",
728 (u32)(gd->arch.sdhc_adapter), 1);
733 #if !CONFIG_IS_ENABLED(DM_MMC)
734 static int esdhc_getcd(struct mmc *mmc)
736 struct fsl_esdhc_priv *priv = mmc->priv;
738 return esdhc_getcd_common(priv);
741 static int esdhc_init(struct mmc *mmc)
743 struct fsl_esdhc_priv *priv = mmc->priv;
745 return esdhc_init_common(priv, mmc);
748 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
749 struct mmc_data *data)
751 struct fsl_esdhc_priv *priv = mmc->priv;
753 return esdhc_send_cmd_common(priv, mmc, cmd, data);
756 static int esdhc_set_ios(struct mmc *mmc)
758 struct fsl_esdhc_priv *priv = mmc->priv;
760 return esdhc_set_ios_common(priv, mmc);
763 static const struct mmc_ops esdhc_ops = {
764 .getcd = esdhc_getcd,
766 .send_cmd = esdhc_send_cmd,
767 .set_ios = esdhc_set_ios,
770 int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
772 struct fsl_esdhc_plat *plat;
773 struct fsl_esdhc_priv *priv;
774 struct mmc_config *mmc_cfg;
780 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
783 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
789 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
790 priv->sdhc_clk = cfg->sdhc_clk;
792 mmc_cfg = &plat->cfg;
794 if (cfg->max_bus_width == 8) {
795 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
797 } else if (cfg->max_bus_width == 4) {
798 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT;
799 } else if (cfg->max_bus_width == 1) {
800 mmc_cfg->host_caps |= MMC_MODE_1BIT;
802 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
804 printf("No max bus width provided. Assume 8-bit supported.\n");
807 #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK
808 if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK)
809 mmc_cfg->host_caps &= ~MMC_MODE_8BIT;
811 mmc_cfg->ops = &esdhc_ops;
813 fsl_esdhc_get_cfg_common(priv, mmc_cfg);
815 mmc = mmc_create(mmc_cfg, priv);
823 int fsl_esdhc_mmc_init(bd_t *bis)
825 struct fsl_esdhc_cfg *cfg;
827 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
828 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
829 cfg->sdhc_clk = gd->arch.sdhc_clk;
830 return fsl_esdhc_initialize(bis, cfg);
833 static int fsl_esdhc_probe(struct udevice *dev)
835 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
836 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
837 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
841 addr = dev_read_addr(dev);
842 if (addr == FDT_ADDR_T_NONE)
845 priv->esdhc_regs = (struct fsl_esdhc *)lower_32_bits(addr);
847 priv->esdhc_regs = (struct fsl_esdhc *)addr;
851 priv->sdhc_clk = gd->arch.sdhc_clk;
852 if (priv->sdhc_clk <= 0) {
853 dev_err(dev, "Unable to get clk for %s\n", dev->name);
857 fsl_esdhc_get_cfg_common(priv, &plat->cfg);
859 mmc_of_parse(dev, &plat->cfg);
862 mmc->cfg = &plat->cfg;
867 return esdhc_init_common(priv, mmc);
870 static int fsl_esdhc_get_cd(struct udevice *dev)
872 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
873 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
875 if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE)
878 return esdhc_getcd_common(priv);
881 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
882 struct mmc_data *data)
884 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
885 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
887 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
890 static int fsl_esdhc_set_ios(struct udevice *dev)
892 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
893 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
895 return esdhc_set_ios_common(priv, &plat->mmc);
898 static const struct dm_mmc_ops fsl_esdhc_ops = {
899 .get_cd = fsl_esdhc_get_cd,
900 .send_cmd = fsl_esdhc_send_cmd,
901 .set_ios = fsl_esdhc_set_ios,
902 #ifdef MMC_SUPPORTS_TUNING
903 .execute_tuning = fsl_esdhc_execute_tuning,
907 static const struct udevice_id fsl_esdhc_ids[] = {
908 { .compatible = "fsl,esdhc", },
912 static int fsl_esdhc_bind(struct udevice *dev)
914 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
916 return mmc_bind(dev, &plat->mmc, &plat->cfg);
919 U_BOOT_DRIVER(fsl_esdhc) = {
920 .name = "fsl-esdhc-mmc",
922 .of_match = fsl_esdhc_ids,
923 .ops = &fsl_esdhc_ops,
924 .bind = fsl_esdhc_bind,
925 .probe = fsl_esdhc_probe,
926 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
927 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),