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>
27 #include <linux/delay.h>
29 DECLARE_GLOBAL_DATA_PTR;
32 uint dsaddr; /* SDMA system address register */
33 uint blkattr; /* Block attributes register */
34 uint cmdarg; /* Command argument register */
35 uint xfertyp; /* Transfer type register */
36 uint cmdrsp0; /* Command response 0 register */
37 uint cmdrsp1; /* Command response 1 register */
38 uint cmdrsp2; /* Command response 2 register */
39 uint cmdrsp3; /* Command response 3 register */
40 uint datport; /* Buffer data port register */
41 uint prsstat; /* Present state register */
42 uint proctl; /* Protocol control register */
43 uint sysctl; /* System Control Register */
44 uint irqstat; /* Interrupt status register */
45 uint irqstaten; /* Interrupt status enable register */
46 uint irqsigen; /* Interrupt signal enable register */
47 uint autoc12err; /* Auto CMD error status register */
48 uint hostcapblt; /* Host controller capabilities register */
49 uint wml; /* Watermark level register */
50 char reserved1[8]; /* reserved */
51 uint fevt; /* Force event register */
52 uint admaes; /* ADMA error status register */
53 uint adsaddr; /* ADMA system address register */
55 uint hostver; /* Host controller version register */
56 char reserved3[4]; /* reserved */
57 uint dmaerraddr; /* DMA error address register */
58 char reserved4[4]; /* reserved */
59 uint dmaerrattr; /* DMA error attribute register */
60 char reserved5[4]; /* reserved */
61 uint hostcapblt2; /* Host controller capabilities register 2 */
62 char reserved6[756]; /* reserved */
63 uint esdhcctl; /* eSDHC control register */
66 struct fsl_esdhc_plat {
67 struct mmc_config cfg;
72 * struct fsl_esdhc_priv
74 * @esdhc_regs: registers of the sdhc controller
75 * @sdhc_clk: Current clk of the sdhc controller
76 * @bus_width: bus width, 1bit, 4bit or 8bit
79 * Following is used when Driver Model is enabled for MMC
80 * @dev: pointer for the device
81 * @cd_gpio: gpio for card detection
82 * @wp_gpio: gpio for write protection
84 struct fsl_esdhc_priv {
85 struct fsl_esdhc *esdhc_regs;
86 unsigned int sdhc_clk;
89 #if !CONFIG_IS_ENABLED(DM_MMC)
95 /* Return the XFERTYP flags for a given command and data packet */
96 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
101 xfertyp |= XFERTYP_DPSEL;
102 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
103 xfertyp |= XFERTYP_DMAEN;
105 if (data->blocks > 1) {
106 xfertyp |= XFERTYP_MSBSEL;
107 xfertyp |= XFERTYP_BCEN;
108 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
109 xfertyp |= XFERTYP_AC12EN;
113 if (data->flags & MMC_DATA_READ)
114 xfertyp |= XFERTYP_DTDSEL;
117 if (cmd->resp_type & MMC_RSP_CRC)
118 xfertyp |= XFERTYP_CCCEN;
119 if (cmd->resp_type & MMC_RSP_OPCODE)
120 xfertyp |= XFERTYP_CICEN;
121 if (cmd->resp_type & MMC_RSP_136)
122 xfertyp |= XFERTYP_RSPTYP_136;
123 else if (cmd->resp_type & MMC_RSP_BUSY)
124 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
125 else if (cmd->resp_type & MMC_RSP_PRESENT)
126 xfertyp |= XFERTYP_RSPTYP_48;
128 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
129 xfertyp |= XFERTYP_CMDTYP_ABORT;
131 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
134 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
136 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
138 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
139 struct mmc_data *data)
141 struct fsl_esdhc *regs = priv->esdhc_regs;
149 if (data->flags & MMC_DATA_READ) {
150 blocks = data->blocks;
153 start = get_timer(0);
154 size = data->blocksize;
155 irqstat = esdhc_read32(®s->irqstat);
156 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
157 if (get_timer(start) > PIO_TIMEOUT) {
158 printf("\nData Read Failed in PIO Mode.");
162 while (size && (!(irqstat & IRQSTAT_TC))) {
163 udelay(100); /* Wait before last byte transfer complete */
164 irqstat = esdhc_read32(®s->irqstat);
165 databuf = in_le32(®s->datport);
166 *((uint *)buffer) = databuf;
173 blocks = data->blocks;
174 buffer = (char *)data->src;
176 start = get_timer(0);
177 size = data->blocksize;
178 irqstat = esdhc_read32(®s->irqstat);
179 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
180 if (get_timer(start) > PIO_TIMEOUT) {
181 printf("\nData Write Failed in PIO Mode.");
185 while (size && (!(irqstat & IRQSTAT_TC))) {
186 udelay(100); /* Wait before last byte transfer complete */
187 databuf = *((uint *)buffer);
190 irqstat = esdhc_read32(®s->irqstat);
191 out_le32(®s->datport, databuf);
199 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
200 struct mmc_data *data)
203 struct fsl_esdhc *regs = priv->esdhc_regs;
204 #if defined(CONFIG_FSL_LAYERSCAPE)
209 wml_value = data->blocksize/4;
211 if (data->flags & MMC_DATA_READ) {
212 if (wml_value > WML_RD_WML_MAX)
213 wml_value = WML_RD_WML_MAX_VAL;
215 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
216 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
217 #if defined(CONFIG_FSL_LAYERSCAPE)
218 addr = virt_to_phys((void *)(data->dest));
219 if (upper_32_bits(addr))
220 printf("Error found for upper 32 bits\n");
222 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
224 esdhc_write32(®s->dsaddr, (u32)data->dest);
228 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
229 flush_dcache_range((ulong)data->src,
230 (ulong)data->src+data->blocks
233 if (wml_value > WML_WR_WML_MAX)
234 wml_value = WML_WR_WML_MAX_VAL;
236 if (!(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) {
237 printf("Can not write to locked SD card.\n");
241 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
243 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
244 #if defined(CONFIG_FSL_LAYERSCAPE)
245 addr = virt_to_phys((void *)(data->src));
246 if (upper_32_bits(addr))
247 printf("Error found for upper 32 bits\n");
249 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
251 esdhc_write32(®s->dsaddr, (u32)data->src);
256 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
258 /* Calculate the timeout period for data transactions */
260 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
261 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
262 * So, Number of SD Clock cycles for 0.25sec should be minimum
263 * (SD Clock/sec * 0.25 sec) SD Clock cycles
264 * = (mmc->clock * 1/4) SD Clock cycles
266 * => (2^(timeout+13)) >= mmc->clock * 1/4
267 * Taking log2 both the sides
268 * => timeout + 13 >= log2(mmc->clock/4)
269 * Rounding up to next power of 2
270 * => timeout + 13 = log2(mmc->clock/4) + 1
271 * => timeout + 13 = fls(mmc->clock/4)
273 * However, the MMC spec "It is strongly recommended for hosts to
274 * implement more than 500ms timeout value even if the card
275 * indicates the 250ms maximum busy length." Even the previous
276 * value of 300ms is known to be insufficient for some cards.
278 * => timeout + 13 = fls(mmc->clock/2)
280 timeout = fls(mmc->clock/2);
289 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC_A001
290 if ((timeout == 4) || (timeout == 8) || (timeout == 12))
294 #ifdef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
297 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
302 static void check_and_invalidate_dcache_range
303 (struct mmc_cmd *cmd,
304 struct mmc_data *data) {
307 unsigned size = roundup(ARCH_DMA_MINALIGN,
308 data->blocks*data->blocksize);
309 #if defined(CONFIG_FSL_LAYERSCAPE)
312 addr = virt_to_phys((void *)(data->dest));
313 if (upper_32_bits(addr))
314 printf("Error found for upper 32 bits\n");
316 start = lower_32_bits(addr);
318 start = (unsigned)data->dest;
321 invalidate_dcache_range(start, end);
325 * Sends a command out on the bus. Takes the mmc pointer,
326 * a command pointer, and an optional data pointer.
328 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
329 struct mmc_cmd *cmd, struct mmc_data *data)
334 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
335 struct fsl_esdhc *regs = priv->esdhc_regs;
338 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
339 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
343 esdhc_write32(®s->irqstat, -1);
347 /* Wait for the bus to be idle */
348 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
349 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
352 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
355 /* Wait at least 8 SD clock cycles before the next command */
357 * Note: This is way more than 8 cycles, but 1ms seems to
358 * resolve timing issues with some cards
362 /* Set up for a data transfer if we have one */
364 err = esdhc_setup_data(priv, mmc, data);
368 if (data->flags & MMC_DATA_READ)
369 check_and_invalidate_dcache_range(cmd, data);
372 /* Figure out the transfer arguments */
373 xfertyp = esdhc_xfertyp(cmd, data);
376 esdhc_write32(®s->irqsigen, 0);
378 /* Send the command */
379 esdhc_write32(®s->cmdarg, cmd->cmdarg);
380 esdhc_write32(®s->xfertyp, xfertyp);
382 /* Wait for the command to complete */
383 start = get_timer(0);
384 while (!(esdhc_read32(®s->irqstat) & flags)) {
385 if (get_timer(start) > 1000) {
391 irqstat = esdhc_read32(®s->irqstat);
393 if (irqstat & CMD_ERR) {
398 if (irqstat & IRQSTAT_CTOE) {
403 /* Workaround for ESDHC errata ENGcm03648 */
404 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
407 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
408 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
415 printf("Timeout waiting for DAT0 to go high!\n");
421 /* Copy the response to the response buffer */
422 if (cmd->resp_type & MMC_RSP_136) {
423 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
425 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
426 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
427 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
428 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
429 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
430 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
431 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
432 cmd->response[3] = (cmdrsp0 << 8);
434 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
436 /* Wait until all of the blocks are transferred */
438 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
439 esdhc_pio_read_write(priv, data);
442 irqstat = esdhc_read32(®s->irqstat);
444 if (irqstat & IRQSTAT_DTOE) {
449 if (irqstat & DATA_ERR) {
453 } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE);
456 * Need invalidate the dcache here again to avoid any
457 * cache-fill during the DMA operations such as the
458 * speculative pre-fetching etc.
460 if (data->flags & MMC_DATA_READ) {
461 check_and_invalidate_dcache_range(cmd, data);
467 /* Reset CMD and DATA portions on error */
469 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
471 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
475 esdhc_write32(®s->sysctl,
476 esdhc_read32(®s->sysctl) |
478 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
483 esdhc_write32(®s->irqstat, -1);
488 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
490 struct fsl_esdhc *regs = priv->esdhc_regs;
493 unsigned int sdhc_clk = priv->sdhc_clk;
498 if (clock < mmc->cfg->f_min)
499 clock = mmc->cfg->f_min;
501 while (sdhc_clk / (16 * pre_div) > clock && pre_div < 256)
504 while (sdhc_clk / (div * pre_div) > clock && div < 16)
510 clk = (pre_div << 8) | (div << 4);
512 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
514 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
517 value = PRSSTAT_SDSTB;
518 while (!(esdhc_read32(®s->prsstat) & value)) {
520 printf("fsl_esdhc: Internal clock never stabilised.\n");
527 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
530 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
532 struct fsl_esdhc *regs = priv->esdhc_regs;
536 value = esdhc_read32(®s->sysctl);
539 value |= SYSCTL_CKEN;
541 value &= ~SYSCTL_CKEN;
543 esdhc_write32(®s->sysctl, value);
546 value = PRSSTAT_SDSTB;
547 while (!(esdhc_read32(®s->prsstat) & value)) {
549 printf("fsl_esdhc: Internal clock never stabilised.\n");
557 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
559 struct fsl_esdhc *regs = priv->esdhc_regs;
561 if (priv->is_sdhc_per_clk) {
562 /* Select to use peripheral clock */
563 esdhc_clock_control(priv, false);
564 esdhc_setbits32(®s->esdhcctl, ESDHCCTL_PCS);
565 esdhc_clock_control(priv, true);
568 /* Set the clock speed */
569 if (priv->clock != mmc->clock)
570 set_sysctl(priv, mmc, mmc->clock);
572 /* Set the bus width */
573 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
575 if (mmc->bus_width == 4)
576 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
577 else if (mmc->bus_width == 8)
578 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
583 static void esdhc_enable_cache_snooping(struct fsl_esdhc *regs)
585 #ifdef CONFIG_ARCH_MPC830X
586 immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
587 sysconf83xx_t *sysconf = &immr->sysconf;
589 setbits_be32(&sysconf->sdhccr, 0x02000000);
591 esdhc_write32(®s->esdhcctl, 0x00000040);
595 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
597 struct fsl_esdhc *regs = priv->esdhc_regs;
600 /* Reset the entire host controller */
601 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
603 /* Wait until the controller is available */
604 start = get_timer(0);
605 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
606 if (get_timer(start) > 1000)
610 esdhc_enable_cache_snooping(regs);
612 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
614 /* Set the initial clock speed */
615 mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
617 /* Disable the BRR and BWR bits in IRQSTAT */
618 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
620 /* Put the PROCTL reg back to the default */
621 esdhc_write32(®s->proctl, PROCTL_INIT);
623 /* Set timout to the maximum value */
624 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
629 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
631 struct fsl_esdhc *regs = priv->esdhc_regs;
634 #ifdef CONFIG_ESDHC_DETECT_QUIRK
635 if (CONFIG_ESDHC_DETECT_QUIRK)
638 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
644 static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,
645 struct mmc_config *cfg)
647 struct fsl_esdhc *regs = priv->esdhc_regs;
650 caps = esdhc_read32(®s->hostcapblt);
651 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
652 caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
654 #ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
655 caps |= HOSTCAPBLT_VS33;
657 if (caps & HOSTCAPBLT_VS18)
658 cfg->voltages |= MMC_VDD_165_195;
659 if (caps & HOSTCAPBLT_VS30)
660 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
661 if (caps & HOSTCAPBLT_VS33)
662 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
664 cfg->name = "FSL_SDHC";
666 if (caps & HOSTCAPBLT_HSS)
667 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
670 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
671 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
674 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
675 void mmc_adapter_card_type_ident(void)
680 card_id = QIXIS_READ(present) & QIXIS_SDID_MASK;
681 gd->arch.sdhc_adapter = card_id;
684 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
685 value = QIXIS_READ(brdcfg[5]);
686 value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
687 QIXIS_WRITE(brdcfg[5], value);
689 case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
690 value = QIXIS_READ(pwr_ctl[1]);
691 value |= QIXIS_EVDD_BY_SDHC_VS;
692 QIXIS_WRITE(pwr_ctl[1], value);
694 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44:
695 value = QIXIS_READ(brdcfg[5]);
696 value |= (QIXIS_SDCLKIN | QIXIS_SDCLKOUT);
697 QIXIS_WRITE(brdcfg[5], value);
699 case QIXIS_ESDHC_ADAPTER_TYPE_RSV:
701 case QIXIS_ESDHC_ADAPTER_TYPE_MMC:
703 case QIXIS_ESDHC_ADAPTER_TYPE_SD:
705 case QIXIS_ESDHC_NO_ADAPTER:
713 #ifdef CONFIG_OF_LIBFDT
714 __weak int esdhc_status_fixup(void *blob, const char *compat)
716 #ifdef CONFIG_FSL_ESDHC_PIN_MUX
717 if (!hwconfig("esdhc")) {
718 do_fixup_by_compat(blob, compat, "status", "disabled",
719 sizeof("disabled"), 1);
726 void fdt_fixup_esdhc(void *blob, bd_t *bd)
728 const char *compat = "fsl,esdhc";
730 if (esdhc_status_fixup(blob, compat))
733 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
734 gd->arch.sdhc_clk, 1);
738 #if !CONFIG_IS_ENABLED(DM_MMC)
739 static int esdhc_getcd(struct mmc *mmc)
741 struct fsl_esdhc_priv *priv = mmc->priv;
743 return esdhc_getcd_common(priv);
746 static int esdhc_init(struct mmc *mmc)
748 struct fsl_esdhc_priv *priv = mmc->priv;
750 return esdhc_init_common(priv, mmc);
753 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
754 struct mmc_data *data)
756 struct fsl_esdhc_priv *priv = mmc->priv;
758 return esdhc_send_cmd_common(priv, mmc, cmd, data);
761 static int esdhc_set_ios(struct mmc *mmc)
763 struct fsl_esdhc_priv *priv = mmc->priv;
765 return esdhc_set_ios_common(priv, mmc);
768 static const struct mmc_ops esdhc_ops = {
769 .getcd = esdhc_getcd,
771 .send_cmd = esdhc_send_cmd,
772 .set_ios = esdhc_set_ios,
775 int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
777 struct fsl_esdhc_plat *plat;
778 struct fsl_esdhc_priv *priv;
779 struct mmc_config *mmc_cfg;
785 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
788 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
794 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
795 priv->sdhc_clk = cfg->sdhc_clk;
796 if (gd->arch.sdhc_per_clk)
797 priv->is_sdhc_per_clk = true;
799 mmc_cfg = &plat->cfg;
801 if (cfg->max_bus_width == 8) {
802 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
804 } else if (cfg->max_bus_width == 4) {
805 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT;
806 } else if (cfg->max_bus_width == 1) {
807 mmc_cfg->host_caps |= MMC_MODE_1BIT;
809 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
811 printf("No max bus width provided. Assume 8-bit supported.\n");
814 #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK
815 if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK)
816 mmc_cfg->host_caps &= ~MMC_MODE_8BIT;
818 mmc_cfg->ops = &esdhc_ops;
820 fsl_esdhc_get_cfg_common(priv, mmc_cfg);
822 mmc = mmc_create(mmc_cfg, priv);
830 int fsl_esdhc_mmc_init(bd_t *bis)
832 struct fsl_esdhc_cfg *cfg;
834 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
835 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
836 /* Prefer peripheral clock which provides higher frequency. */
837 if (gd->arch.sdhc_per_clk)
838 cfg->sdhc_clk = gd->arch.sdhc_per_clk;
840 cfg->sdhc_clk = gd->arch.sdhc_clk;
841 return fsl_esdhc_initialize(bis, cfg);
844 static int fsl_esdhc_probe(struct udevice *dev)
846 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
847 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
848 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
852 addr = dev_read_addr(dev);
853 if (addr == FDT_ADDR_T_NONE)
856 priv->esdhc_regs = (struct fsl_esdhc *)lower_32_bits(addr);
858 priv->esdhc_regs = (struct fsl_esdhc *)addr;
862 if (gd->arch.sdhc_per_clk) {
863 priv->sdhc_clk = gd->arch.sdhc_per_clk;
864 priv->is_sdhc_per_clk = true;
866 priv->sdhc_clk = gd->arch.sdhc_clk;
869 if (priv->sdhc_clk <= 0) {
870 dev_err(dev, "Unable to get clk for %s\n", dev->name);
874 fsl_esdhc_get_cfg_common(priv, &plat->cfg);
876 mmc_of_parse(dev, &plat->cfg);
879 mmc->cfg = &plat->cfg;
884 return esdhc_init_common(priv, mmc);
887 static int fsl_esdhc_get_cd(struct udevice *dev)
889 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
890 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
892 if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE)
895 return esdhc_getcd_common(priv);
898 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
899 struct mmc_data *data)
901 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
902 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
904 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
907 static int fsl_esdhc_set_ios(struct udevice *dev)
909 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
910 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
912 return esdhc_set_ios_common(priv, &plat->mmc);
915 static const struct dm_mmc_ops fsl_esdhc_ops = {
916 .get_cd = fsl_esdhc_get_cd,
917 .send_cmd = fsl_esdhc_send_cmd,
918 .set_ios = fsl_esdhc_set_ios,
919 #ifdef MMC_SUPPORTS_TUNING
920 .execute_tuning = fsl_esdhc_execute_tuning,
924 static const struct udevice_id fsl_esdhc_ids[] = {
925 { .compatible = "fsl,esdhc", },
929 static int fsl_esdhc_bind(struct udevice *dev)
931 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
933 return mmc_bind(dev, &plat->mmc, &plat->cfg);
936 U_BOOT_DRIVER(fsl_esdhc) = {
937 .name = "fsl-esdhc-mmc",
939 .of_match = fsl_esdhc_ids,
940 .ops = &fsl_esdhc_ops,
941 .bind = fsl_esdhc_bind,
942 .probe = fsl_esdhc_probe,
943 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
944 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),