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>
23 #include <asm/cache.h>
26 #include <dm/device_compat.h>
28 DECLARE_GLOBAL_DATA_PTR;
31 uint dsaddr; /* SDMA system address register */
32 uint blkattr; /* Block attributes register */
33 uint cmdarg; /* Command argument register */
34 uint xfertyp; /* Transfer type register */
35 uint cmdrsp0; /* Command response 0 register */
36 uint cmdrsp1; /* Command response 1 register */
37 uint cmdrsp2; /* Command response 2 register */
38 uint cmdrsp3; /* Command response 3 register */
39 uint datport; /* Buffer data port register */
40 uint prsstat; /* Present state register */
41 uint proctl; /* Protocol control register */
42 uint sysctl; /* System Control Register */
43 uint irqstat; /* Interrupt status register */
44 uint irqstaten; /* Interrupt status enable register */
45 uint irqsigen; /* Interrupt signal enable register */
46 uint autoc12err; /* Auto CMD error status register */
47 uint hostcapblt; /* Host controller capabilities register */
48 uint wml; /* Watermark level register */
49 char reserved1[8]; /* reserved */
50 uint fevt; /* Force event register */
51 uint admaes; /* ADMA error status register */
52 uint adsaddr; /* ADMA system address register */
54 uint hostver; /* Host controller version register */
55 char reserved3[4]; /* reserved */
56 uint dmaerraddr; /* DMA error address register */
57 char reserved4[4]; /* reserved */
58 uint dmaerrattr; /* DMA error attribute register */
59 char reserved5[4]; /* reserved */
60 uint hostcapblt2; /* Host controller capabilities register 2 */
61 char reserved6[756]; /* reserved */
62 uint esdhcctl; /* eSDHC control register */
65 struct fsl_esdhc_plat {
66 struct mmc_config cfg;
71 * struct fsl_esdhc_priv
73 * @esdhc_regs: registers of the sdhc controller
74 * @sdhc_clk: Current clk of the sdhc controller
75 * @bus_width: bus width, 1bit, 4bit or 8bit
78 * Following is used when Driver Model is enabled for MMC
79 * @dev: pointer for the device
80 * @cd_gpio: gpio for card detection
81 * @wp_gpio: gpio for write protection
83 struct fsl_esdhc_priv {
84 struct fsl_esdhc *esdhc_regs;
85 unsigned int sdhc_clk;
88 #if !CONFIG_IS_ENABLED(DM_MMC)
94 /* Return the XFERTYP flags for a given command and data packet */
95 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
100 xfertyp |= XFERTYP_DPSEL;
101 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
102 xfertyp |= XFERTYP_DMAEN;
104 if (data->blocks > 1) {
105 xfertyp |= XFERTYP_MSBSEL;
106 xfertyp |= XFERTYP_BCEN;
107 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
108 xfertyp |= XFERTYP_AC12EN;
112 if (data->flags & MMC_DATA_READ)
113 xfertyp |= XFERTYP_DTDSEL;
116 if (cmd->resp_type & MMC_RSP_CRC)
117 xfertyp |= XFERTYP_CCCEN;
118 if (cmd->resp_type & MMC_RSP_OPCODE)
119 xfertyp |= XFERTYP_CICEN;
120 if (cmd->resp_type & MMC_RSP_136)
121 xfertyp |= XFERTYP_RSPTYP_136;
122 else if (cmd->resp_type & MMC_RSP_BUSY)
123 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
124 else if (cmd->resp_type & MMC_RSP_PRESENT)
125 xfertyp |= XFERTYP_RSPTYP_48;
127 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
128 xfertyp |= XFERTYP_CMDTYP_ABORT;
130 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
133 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
135 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
137 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
138 struct mmc_data *data)
140 struct fsl_esdhc *regs = priv->esdhc_regs;
148 if (data->flags & MMC_DATA_READ) {
149 blocks = data->blocks;
152 start = get_timer(0);
153 size = data->blocksize;
154 irqstat = esdhc_read32(®s->irqstat);
155 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
156 if (get_timer(start) > PIO_TIMEOUT) {
157 printf("\nData Read Failed in PIO Mode.");
161 while (size && (!(irqstat & IRQSTAT_TC))) {
162 udelay(100); /* Wait before last byte transfer complete */
163 irqstat = esdhc_read32(®s->irqstat);
164 databuf = in_le32(®s->datport);
165 *((uint *)buffer) = databuf;
172 blocks = data->blocks;
173 buffer = (char *)data->src;
175 start = get_timer(0);
176 size = data->blocksize;
177 irqstat = esdhc_read32(®s->irqstat);
178 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
179 if (get_timer(start) > PIO_TIMEOUT) {
180 printf("\nData Write Failed in PIO Mode.");
184 while (size && (!(irqstat & IRQSTAT_TC))) {
185 udelay(100); /* Wait before last byte transfer complete */
186 databuf = *((uint *)buffer);
189 irqstat = esdhc_read32(®s->irqstat);
190 out_le32(®s->datport, databuf);
198 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
199 struct mmc_data *data)
202 struct fsl_esdhc *regs = priv->esdhc_regs;
203 #if defined(CONFIG_FSL_LAYERSCAPE)
208 wml_value = data->blocksize/4;
210 if (data->flags & MMC_DATA_READ) {
211 if (wml_value > WML_RD_WML_MAX)
212 wml_value = WML_RD_WML_MAX_VAL;
214 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
215 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
216 #if defined(CONFIG_FSL_LAYERSCAPE)
217 addr = virt_to_phys((void *)(data->dest));
218 if (upper_32_bits(addr))
219 printf("Error found for upper 32 bits\n");
221 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
223 esdhc_write32(®s->dsaddr, (u32)data->dest);
227 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
228 flush_dcache_range((ulong)data->src,
229 (ulong)data->src+data->blocks
232 if (wml_value > WML_WR_WML_MAX)
233 wml_value = WML_WR_WML_MAX_VAL;
235 if (!(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) {
236 printf("Can not write to locked SD card.\n");
240 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
242 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
243 #if defined(CONFIG_FSL_LAYERSCAPE)
244 addr = virt_to_phys((void *)(data->src));
245 if (upper_32_bits(addr))
246 printf("Error found for upper 32 bits\n");
248 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
250 esdhc_write32(®s->dsaddr, (u32)data->src);
255 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
257 /* Calculate the timeout period for data transactions */
259 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
260 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
261 * So, Number of SD Clock cycles for 0.25sec should be minimum
262 * (SD Clock/sec * 0.25 sec) SD Clock cycles
263 * = (mmc->clock * 1/4) SD Clock cycles
265 * => (2^(timeout+13)) >= mmc->clock * 1/4
266 * Taking log2 both the sides
267 * => timeout + 13 >= log2(mmc->clock/4)
268 * Rounding up to next power of 2
269 * => timeout + 13 = log2(mmc->clock/4) + 1
270 * => timeout + 13 = fls(mmc->clock/4)
272 * However, the MMC spec "It is strongly recommended for hosts to
273 * implement more than 500ms timeout value even if the card
274 * indicates the 250ms maximum busy length." Even the previous
275 * value of 300ms is known to be insufficient for some cards.
277 * => timeout + 13 = fls(mmc->clock/2)
279 timeout = fls(mmc->clock/2);
288 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC_A001
289 if ((timeout == 4) || (timeout == 8) || (timeout == 12))
293 #ifdef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
296 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
301 static void check_and_invalidate_dcache_range
302 (struct mmc_cmd *cmd,
303 struct mmc_data *data) {
306 unsigned size = roundup(ARCH_DMA_MINALIGN,
307 data->blocks*data->blocksize);
308 #if defined(CONFIG_FSL_LAYERSCAPE)
311 addr = virt_to_phys((void *)(data->dest));
312 if (upper_32_bits(addr))
313 printf("Error found for upper 32 bits\n");
315 start = lower_32_bits(addr);
317 start = (unsigned)data->dest;
320 invalidate_dcache_range(start, end);
324 * Sends a command out on the bus. Takes the mmc pointer,
325 * a command pointer, and an optional data pointer.
327 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
328 struct mmc_cmd *cmd, struct mmc_data *data)
333 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
334 struct fsl_esdhc *regs = priv->esdhc_regs;
337 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
338 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
342 esdhc_write32(®s->irqstat, -1);
346 /* Wait for the bus to be idle */
347 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
348 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
351 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
354 /* Wait at least 8 SD clock cycles before the next command */
356 * Note: This is way more than 8 cycles, but 1ms seems to
357 * resolve timing issues with some cards
361 /* Set up for a data transfer if we have one */
363 err = esdhc_setup_data(priv, mmc, data);
367 if (data->flags & MMC_DATA_READ)
368 check_and_invalidate_dcache_range(cmd, data);
371 /* Figure out the transfer arguments */
372 xfertyp = esdhc_xfertyp(cmd, data);
375 esdhc_write32(®s->irqsigen, 0);
377 /* Send the command */
378 esdhc_write32(®s->cmdarg, cmd->cmdarg);
379 esdhc_write32(®s->xfertyp, xfertyp);
381 /* Wait for the command to complete */
382 start = get_timer(0);
383 while (!(esdhc_read32(®s->irqstat) & flags)) {
384 if (get_timer(start) > 1000) {
390 irqstat = esdhc_read32(®s->irqstat);
392 if (irqstat & CMD_ERR) {
397 if (irqstat & IRQSTAT_CTOE) {
402 /* Workaround for ESDHC errata ENGcm03648 */
403 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
406 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
407 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
414 printf("Timeout waiting for DAT0 to go high!\n");
420 /* Copy the response to the response buffer */
421 if (cmd->resp_type & MMC_RSP_136) {
422 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
424 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
425 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
426 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
427 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
428 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
429 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
430 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
431 cmd->response[3] = (cmdrsp0 << 8);
433 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
435 /* Wait until all of the blocks are transferred */
437 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
438 esdhc_pio_read_write(priv, data);
441 irqstat = esdhc_read32(®s->irqstat);
443 if (irqstat & IRQSTAT_DTOE) {
448 if (irqstat & DATA_ERR) {
452 } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE);
455 * Need invalidate the dcache here again to avoid any
456 * cache-fill during the DMA operations such as the
457 * speculative pre-fetching etc.
459 if (data->flags & MMC_DATA_READ) {
460 check_and_invalidate_dcache_range(cmd, data);
466 /* Reset CMD and DATA portions on error */
468 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
470 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
474 esdhc_write32(®s->sysctl,
475 esdhc_read32(®s->sysctl) |
477 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
482 esdhc_write32(®s->irqstat, -1);
487 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
489 struct fsl_esdhc *regs = priv->esdhc_regs;
492 unsigned int sdhc_clk = priv->sdhc_clk;
497 if (clock < mmc->cfg->f_min)
498 clock = mmc->cfg->f_min;
500 while (sdhc_clk / (16 * pre_div) > clock && pre_div < 256)
503 while (sdhc_clk / (div * pre_div) > clock && div < 16)
509 clk = (pre_div << 8) | (div << 4);
511 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
513 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
516 value = PRSSTAT_SDSTB;
517 while (!(esdhc_read32(®s->prsstat) & value)) {
519 printf("fsl_esdhc: Internal clock never stabilised.\n");
526 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
529 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
531 struct fsl_esdhc *regs = priv->esdhc_regs;
535 value = esdhc_read32(®s->sysctl);
538 value |= SYSCTL_CKEN;
540 value &= ~SYSCTL_CKEN;
542 esdhc_write32(®s->sysctl, value);
545 value = PRSSTAT_SDSTB;
546 while (!(esdhc_read32(®s->prsstat) & value)) {
548 printf("fsl_esdhc: Internal clock never stabilised.\n");
556 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
558 struct fsl_esdhc *regs = priv->esdhc_regs;
560 if (priv->is_sdhc_per_clk) {
561 /* Select to use peripheral clock */
562 esdhc_clock_control(priv, false);
563 esdhc_setbits32(®s->esdhcctl, ESDHCCTL_PCS);
564 esdhc_clock_control(priv, true);
567 /* Set the clock speed */
568 if (priv->clock != mmc->clock)
569 set_sysctl(priv, mmc, mmc->clock);
571 /* Set the bus width */
572 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
574 if (mmc->bus_width == 4)
575 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
576 else if (mmc->bus_width == 8)
577 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
582 static void esdhc_enable_cache_snooping(struct fsl_esdhc *regs)
584 #ifdef CONFIG_ARCH_MPC830X
585 immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
586 sysconf83xx_t *sysconf = &immr->sysconf;
588 setbits_be32(&sysconf->sdhccr, 0x02000000);
590 esdhc_write32(®s->esdhcctl, 0x00000040);
594 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
596 struct fsl_esdhc *regs = priv->esdhc_regs;
599 /* Reset the entire host controller */
600 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
602 /* Wait until the controller is available */
603 start = get_timer(0);
604 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
605 if (get_timer(start) > 1000)
609 esdhc_enable_cache_snooping(regs);
611 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
613 /* Set the initial clock speed */
614 mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
616 /* Disable the BRR and BWR bits in IRQSTAT */
617 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
619 /* Put the PROCTL reg back to the default */
620 esdhc_write32(®s->proctl, PROCTL_INIT);
622 /* Set timout to the maximum value */
623 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
628 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
630 struct fsl_esdhc *regs = priv->esdhc_regs;
633 #ifdef CONFIG_ESDHC_DETECT_QUIRK
634 if (CONFIG_ESDHC_DETECT_QUIRK)
637 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
643 static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,
644 struct mmc_config *cfg)
646 struct fsl_esdhc *regs = priv->esdhc_regs;
649 caps = esdhc_read32(®s->hostcapblt);
650 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
651 caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
653 #ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
654 caps |= HOSTCAPBLT_VS33;
656 if (caps & HOSTCAPBLT_VS18)
657 cfg->voltages |= MMC_VDD_165_195;
658 if (caps & HOSTCAPBLT_VS30)
659 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
660 if (caps & HOSTCAPBLT_VS33)
661 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
663 cfg->name = "FSL_SDHC";
665 if (caps & HOSTCAPBLT_HSS)
666 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
669 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
670 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
673 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
674 void mmc_adapter_card_type_ident(void)
679 card_id = QIXIS_READ(present) & QIXIS_SDID_MASK;
680 gd->arch.sdhc_adapter = card_id;
683 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
684 value = QIXIS_READ(brdcfg[5]);
685 value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
686 QIXIS_WRITE(brdcfg[5], value);
688 case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
689 value = QIXIS_READ(pwr_ctl[1]);
690 value |= QIXIS_EVDD_BY_SDHC_VS;
691 QIXIS_WRITE(pwr_ctl[1], value);
693 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44:
694 value = QIXIS_READ(brdcfg[5]);
695 value |= (QIXIS_SDCLKIN | QIXIS_SDCLKOUT);
696 QIXIS_WRITE(brdcfg[5], value);
698 case QIXIS_ESDHC_ADAPTER_TYPE_RSV:
700 case QIXIS_ESDHC_ADAPTER_TYPE_MMC:
702 case QIXIS_ESDHC_ADAPTER_TYPE_SD:
704 case QIXIS_ESDHC_NO_ADAPTER:
712 #ifdef CONFIG_OF_LIBFDT
713 __weak int esdhc_status_fixup(void *blob, const char *compat)
715 #ifdef CONFIG_FSL_ESDHC_PIN_MUX
716 if (!hwconfig("esdhc")) {
717 do_fixup_by_compat(blob, compat, "status", "disabled",
718 sizeof("disabled"), 1);
725 void fdt_fixup_esdhc(void *blob, bd_t *bd)
727 const char *compat = "fsl,esdhc";
729 if (esdhc_status_fixup(blob, compat))
732 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
733 gd->arch.sdhc_clk, 1);
737 #if !CONFIG_IS_ENABLED(DM_MMC)
738 static int esdhc_getcd(struct mmc *mmc)
740 struct fsl_esdhc_priv *priv = mmc->priv;
742 return esdhc_getcd_common(priv);
745 static int esdhc_init(struct mmc *mmc)
747 struct fsl_esdhc_priv *priv = mmc->priv;
749 return esdhc_init_common(priv, mmc);
752 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
753 struct mmc_data *data)
755 struct fsl_esdhc_priv *priv = mmc->priv;
757 return esdhc_send_cmd_common(priv, mmc, cmd, data);
760 static int esdhc_set_ios(struct mmc *mmc)
762 struct fsl_esdhc_priv *priv = mmc->priv;
764 return esdhc_set_ios_common(priv, mmc);
767 static const struct mmc_ops esdhc_ops = {
768 .getcd = esdhc_getcd,
770 .send_cmd = esdhc_send_cmd,
771 .set_ios = esdhc_set_ios,
774 int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
776 struct fsl_esdhc_plat *plat;
777 struct fsl_esdhc_priv *priv;
778 struct mmc_config *mmc_cfg;
784 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
787 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
793 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
794 priv->sdhc_clk = cfg->sdhc_clk;
795 if (gd->arch.sdhc_per_clk)
796 priv->is_sdhc_per_clk = true;
798 mmc_cfg = &plat->cfg;
800 if (cfg->max_bus_width == 8) {
801 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
803 } else if (cfg->max_bus_width == 4) {
804 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT;
805 } else if (cfg->max_bus_width == 1) {
806 mmc_cfg->host_caps |= MMC_MODE_1BIT;
808 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
810 printf("No max bus width provided. Assume 8-bit supported.\n");
813 #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK
814 if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK)
815 mmc_cfg->host_caps &= ~MMC_MODE_8BIT;
817 mmc_cfg->ops = &esdhc_ops;
819 fsl_esdhc_get_cfg_common(priv, mmc_cfg);
821 mmc = mmc_create(mmc_cfg, priv);
829 int fsl_esdhc_mmc_init(bd_t *bis)
831 struct fsl_esdhc_cfg *cfg;
833 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
834 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
835 /* Prefer peripheral clock which provides higher frequency. */
836 if (gd->arch.sdhc_per_clk)
837 cfg->sdhc_clk = gd->arch.sdhc_per_clk;
839 cfg->sdhc_clk = gd->arch.sdhc_clk;
840 return fsl_esdhc_initialize(bis, cfg);
843 static int fsl_esdhc_probe(struct udevice *dev)
845 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
846 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
847 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
851 addr = dev_read_addr(dev);
852 if (addr == FDT_ADDR_T_NONE)
855 priv->esdhc_regs = (struct fsl_esdhc *)lower_32_bits(addr);
857 priv->esdhc_regs = (struct fsl_esdhc *)addr;
861 if (gd->arch.sdhc_per_clk) {
862 priv->sdhc_clk = gd->arch.sdhc_per_clk;
863 priv->is_sdhc_per_clk = true;
865 priv->sdhc_clk = gd->arch.sdhc_clk;
868 if (priv->sdhc_clk <= 0) {
869 dev_err(dev, "Unable to get clk for %s\n", dev->name);
873 fsl_esdhc_get_cfg_common(priv, &plat->cfg);
875 mmc_of_parse(dev, &plat->cfg);
878 mmc->cfg = &plat->cfg;
883 return esdhc_init_common(priv, mmc);
886 static int fsl_esdhc_get_cd(struct udevice *dev)
888 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
889 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
891 if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE)
894 return esdhc_getcd_common(priv);
897 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
898 struct mmc_data *data)
900 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
901 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
903 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
906 static int fsl_esdhc_set_ios(struct udevice *dev)
908 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
909 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
911 return esdhc_set_ios_common(priv, &plat->mmc);
914 static const struct dm_mmc_ops fsl_esdhc_ops = {
915 .get_cd = fsl_esdhc_get_cd,
916 .send_cmd = fsl_esdhc_send_cmd,
917 .set_ios = fsl_esdhc_set_ios,
918 #ifdef MMC_SUPPORTS_TUNING
919 .execute_tuning = fsl_esdhc_execute_tuning,
923 static const struct udevice_id fsl_esdhc_ids[] = {
924 { .compatible = "fsl,esdhc", },
928 static int fsl_esdhc_bind(struct udevice *dev)
930 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
932 return mmc_bind(dev, &plat->mmc, &plat->cfg);
935 U_BOOT_DRIVER(fsl_esdhc) = {
936 .name = "fsl-esdhc-mmc",
938 .of_match = fsl_esdhc_ids,
939 .ops = &fsl_esdhc_ops,
940 .bind = fsl_esdhc_bind,
941 .probe = fsl_esdhc_probe,
942 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
943 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),