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>
25 #include <dm/device_compat.h>
27 DECLARE_GLOBAL_DATA_PTR;
30 uint dsaddr; /* SDMA system address register */
31 uint blkattr; /* Block attributes register */
32 uint cmdarg; /* Command argument register */
33 uint xfertyp; /* Transfer type register */
34 uint cmdrsp0; /* Command response 0 register */
35 uint cmdrsp1; /* Command response 1 register */
36 uint cmdrsp2; /* Command response 2 register */
37 uint cmdrsp3; /* Command response 3 register */
38 uint datport; /* Buffer data port register */
39 uint prsstat; /* Present state register */
40 uint proctl; /* Protocol control register */
41 uint sysctl; /* System Control Register */
42 uint irqstat; /* Interrupt status register */
43 uint irqstaten; /* Interrupt status enable register */
44 uint irqsigen; /* Interrupt signal enable register */
45 uint autoc12err; /* Auto CMD error status register */
46 uint hostcapblt; /* Host controller capabilities register */
47 uint wml; /* Watermark level register */
48 char reserved1[8]; /* reserved */
49 uint fevt; /* Force event register */
50 uint admaes; /* ADMA error status register */
51 uint adsaddr; /* ADMA system address register */
53 uint hostver; /* Host controller version register */
54 char reserved3[4]; /* reserved */
55 uint dmaerraddr; /* DMA error address register */
56 char reserved4[4]; /* reserved */
57 uint dmaerrattr; /* DMA error attribute register */
58 char reserved5[4]; /* reserved */
59 uint hostcapblt2; /* Host controller capabilities register 2 */
60 char reserved6[756]; /* reserved */
61 uint esdhcctl; /* eSDHC control register */
64 struct fsl_esdhc_plat {
65 struct mmc_config cfg;
70 * struct fsl_esdhc_priv
72 * @esdhc_regs: registers of the sdhc controller
73 * @sdhc_clk: Current clk of the sdhc controller
74 * @bus_width: bus width, 1bit, 4bit or 8bit
77 * Following is used when Driver Model is enabled for MMC
78 * @dev: pointer for the device
79 * @cd_gpio: gpio for card detection
80 * @wp_gpio: gpio for write protection
82 struct fsl_esdhc_priv {
83 struct fsl_esdhc *esdhc_regs;
84 unsigned int sdhc_clk;
87 #if !CONFIG_IS_ENABLED(DM_MMC)
93 /* Return the XFERTYP flags for a given command and data packet */
94 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
99 xfertyp |= XFERTYP_DPSEL;
100 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
101 xfertyp |= XFERTYP_DMAEN;
103 if (data->blocks > 1) {
104 xfertyp |= XFERTYP_MSBSEL;
105 xfertyp |= XFERTYP_BCEN;
106 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
107 xfertyp |= XFERTYP_AC12EN;
111 if (data->flags & MMC_DATA_READ)
112 xfertyp |= XFERTYP_DTDSEL;
115 if (cmd->resp_type & MMC_RSP_CRC)
116 xfertyp |= XFERTYP_CCCEN;
117 if (cmd->resp_type & MMC_RSP_OPCODE)
118 xfertyp |= XFERTYP_CICEN;
119 if (cmd->resp_type & MMC_RSP_136)
120 xfertyp |= XFERTYP_RSPTYP_136;
121 else if (cmd->resp_type & MMC_RSP_BUSY)
122 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
123 else if (cmd->resp_type & MMC_RSP_PRESENT)
124 xfertyp |= XFERTYP_RSPTYP_48;
126 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
127 xfertyp |= XFERTYP_CMDTYP_ABORT;
129 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
132 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
134 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
136 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
137 struct mmc_data *data)
139 struct fsl_esdhc *regs = priv->esdhc_regs;
147 if (data->flags & MMC_DATA_READ) {
148 blocks = data->blocks;
151 start = get_timer(0);
152 size = data->blocksize;
153 irqstat = esdhc_read32(®s->irqstat);
154 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
155 if (get_timer(start) > PIO_TIMEOUT) {
156 printf("\nData Read Failed in PIO Mode.");
160 while (size && (!(irqstat & IRQSTAT_TC))) {
161 udelay(100); /* Wait before last byte transfer complete */
162 irqstat = esdhc_read32(®s->irqstat);
163 databuf = in_le32(®s->datport);
164 *((uint *)buffer) = databuf;
171 blocks = data->blocks;
172 buffer = (char *)data->src;
174 start = get_timer(0);
175 size = data->blocksize;
176 irqstat = esdhc_read32(®s->irqstat);
177 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
178 if (get_timer(start) > PIO_TIMEOUT) {
179 printf("\nData Write Failed in PIO Mode.");
183 while (size && (!(irqstat & IRQSTAT_TC))) {
184 udelay(100); /* Wait before last byte transfer complete */
185 databuf = *((uint *)buffer);
188 irqstat = esdhc_read32(®s->irqstat);
189 out_le32(®s->datport, databuf);
197 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
198 struct mmc_data *data)
201 struct fsl_esdhc *regs = priv->esdhc_regs;
202 #if defined(CONFIG_FSL_LAYERSCAPE)
207 wml_value = data->blocksize/4;
209 if (data->flags & MMC_DATA_READ) {
210 if (wml_value > WML_RD_WML_MAX)
211 wml_value = WML_RD_WML_MAX_VAL;
213 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
214 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
215 #if defined(CONFIG_FSL_LAYERSCAPE)
216 addr = virt_to_phys((void *)(data->dest));
217 if (upper_32_bits(addr))
218 printf("Error found for upper 32 bits\n");
220 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
222 esdhc_write32(®s->dsaddr, (u32)data->dest);
226 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
227 flush_dcache_range((ulong)data->src,
228 (ulong)data->src+data->blocks
231 if (wml_value > WML_WR_WML_MAX)
232 wml_value = WML_WR_WML_MAX_VAL;
234 if (!(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) {
235 printf("Can not write to locked SD card.\n");
239 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
241 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
242 #if defined(CONFIG_FSL_LAYERSCAPE)
243 addr = virt_to_phys((void *)(data->src));
244 if (upper_32_bits(addr))
245 printf("Error found for upper 32 bits\n");
247 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
249 esdhc_write32(®s->dsaddr, (u32)data->src);
254 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
256 /* Calculate the timeout period for data transactions */
258 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
259 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
260 * So, Number of SD Clock cycles for 0.25sec should be minimum
261 * (SD Clock/sec * 0.25 sec) SD Clock cycles
262 * = (mmc->clock * 1/4) SD Clock cycles
264 * => (2^(timeout+13)) >= mmc->clock * 1/4
265 * Taking log2 both the sides
266 * => timeout + 13 >= log2(mmc->clock/4)
267 * Rounding up to next power of 2
268 * => timeout + 13 = log2(mmc->clock/4) + 1
269 * => timeout + 13 = fls(mmc->clock/4)
271 * However, the MMC spec "It is strongly recommended for hosts to
272 * implement more than 500ms timeout value even if the card
273 * indicates the 250ms maximum busy length." Even the previous
274 * value of 300ms is known to be insufficient for some cards.
276 * => timeout + 13 = fls(mmc->clock/2)
278 timeout = fls(mmc->clock/2);
287 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC_A001
288 if ((timeout == 4) || (timeout == 8) || (timeout == 12))
292 #ifdef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
295 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
300 static void check_and_invalidate_dcache_range
301 (struct mmc_cmd *cmd,
302 struct mmc_data *data) {
305 unsigned size = roundup(ARCH_DMA_MINALIGN,
306 data->blocks*data->blocksize);
307 #if defined(CONFIG_FSL_LAYERSCAPE)
310 addr = virt_to_phys((void *)(data->dest));
311 if (upper_32_bits(addr))
312 printf("Error found for upper 32 bits\n");
314 start = lower_32_bits(addr);
316 start = (unsigned)data->dest;
319 invalidate_dcache_range(start, end);
323 * Sends a command out on the bus. Takes the mmc pointer,
324 * a command pointer, and an optional data pointer.
326 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
327 struct mmc_cmd *cmd, struct mmc_data *data)
332 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
333 struct fsl_esdhc *regs = priv->esdhc_regs;
336 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
337 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
341 esdhc_write32(®s->irqstat, -1);
345 /* Wait for the bus to be idle */
346 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
347 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
350 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
353 /* Wait at least 8 SD clock cycles before the next command */
355 * Note: This is way more than 8 cycles, but 1ms seems to
356 * resolve timing issues with some cards
360 /* Set up for a data transfer if we have one */
362 err = esdhc_setup_data(priv, mmc, data);
366 if (data->flags & MMC_DATA_READ)
367 check_and_invalidate_dcache_range(cmd, data);
370 /* Figure out the transfer arguments */
371 xfertyp = esdhc_xfertyp(cmd, data);
374 esdhc_write32(®s->irqsigen, 0);
376 /* Send the command */
377 esdhc_write32(®s->cmdarg, cmd->cmdarg);
378 esdhc_write32(®s->xfertyp, xfertyp);
380 /* Wait for the command to complete */
381 start = get_timer(0);
382 while (!(esdhc_read32(®s->irqstat) & flags)) {
383 if (get_timer(start) > 1000) {
389 irqstat = esdhc_read32(®s->irqstat);
391 if (irqstat & CMD_ERR) {
396 if (irqstat & IRQSTAT_CTOE) {
401 /* Workaround for ESDHC errata ENGcm03648 */
402 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
405 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
406 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
413 printf("Timeout waiting for DAT0 to go high!\n");
419 /* Copy the response to the response buffer */
420 if (cmd->resp_type & MMC_RSP_136) {
421 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
423 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
424 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
425 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
426 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
427 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
428 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
429 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
430 cmd->response[3] = (cmdrsp0 << 8);
432 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
434 /* Wait until all of the blocks are transferred */
436 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
437 esdhc_pio_read_write(priv, data);
440 irqstat = esdhc_read32(®s->irqstat);
442 if (irqstat & IRQSTAT_DTOE) {
447 if (irqstat & DATA_ERR) {
451 } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE);
454 * Need invalidate the dcache here again to avoid any
455 * cache-fill during the DMA operations such as the
456 * speculative pre-fetching etc.
458 if (data->flags & MMC_DATA_READ) {
459 check_and_invalidate_dcache_range(cmd, data);
465 /* Reset CMD and DATA portions on error */
467 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
469 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
473 esdhc_write32(®s->sysctl,
474 esdhc_read32(®s->sysctl) |
476 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
481 esdhc_write32(®s->irqstat, -1);
486 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
488 struct fsl_esdhc *regs = priv->esdhc_regs;
491 unsigned int sdhc_clk = priv->sdhc_clk;
496 if (clock < mmc->cfg->f_min)
497 clock = mmc->cfg->f_min;
499 while (sdhc_clk / (16 * pre_div) > clock && pre_div < 256)
502 while (sdhc_clk / (div * pre_div) > clock && div < 16)
508 clk = (pre_div << 8) | (div << 4);
510 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
512 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
515 value = PRSSTAT_SDSTB;
516 while (!(esdhc_read32(®s->prsstat) & value)) {
518 printf("fsl_esdhc: Internal clock never stabilised.\n");
525 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
528 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
530 struct fsl_esdhc *regs = priv->esdhc_regs;
534 value = esdhc_read32(®s->sysctl);
537 value |= SYSCTL_CKEN;
539 value &= ~SYSCTL_CKEN;
541 esdhc_write32(®s->sysctl, value);
544 value = PRSSTAT_SDSTB;
545 while (!(esdhc_read32(®s->prsstat) & value)) {
547 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 if (priv->is_sdhc_per_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);
566 /* Set the clock speed */
567 if (priv->clock != mmc->clock)
568 set_sysctl(priv, mmc, mmc->clock);
570 /* Set the bus width */
571 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
573 if (mmc->bus_width == 4)
574 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
575 else if (mmc->bus_width == 8)
576 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
581 static void esdhc_enable_cache_snooping(struct fsl_esdhc *regs)
583 #ifdef CONFIG_ARCH_MPC830X
584 immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
585 sysconf83xx_t *sysconf = &immr->sysconf;
587 setbits_be32(&sysconf->sdhccr, 0x02000000);
589 esdhc_write32(®s->esdhcctl, 0x00000040);
593 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
595 struct fsl_esdhc *regs = priv->esdhc_regs;
598 /* Reset the entire host controller */
599 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
601 /* Wait until the controller is available */
602 start = get_timer(0);
603 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
604 if (get_timer(start) > 1000)
608 esdhc_enable_cache_snooping(regs);
610 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
612 /* Set the initial clock speed */
613 mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
615 /* Disable the BRR and BWR bits in IRQSTAT */
616 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
618 /* Put the PROCTL reg back to the default */
619 esdhc_write32(®s->proctl, PROCTL_INIT);
621 /* Set timout to the maximum value */
622 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
627 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
629 struct fsl_esdhc *regs = priv->esdhc_regs;
632 #ifdef CONFIG_ESDHC_DETECT_QUIRK
633 if (CONFIG_ESDHC_DETECT_QUIRK)
636 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
642 static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,
643 struct mmc_config *cfg)
645 struct fsl_esdhc *regs = priv->esdhc_regs;
648 caps = esdhc_read32(®s->hostcapblt);
649 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
650 caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
652 #ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
653 caps |= HOSTCAPBLT_VS33;
655 if (caps & HOSTCAPBLT_VS18)
656 cfg->voltages |= MMC_VDD_165_195;
657 if (caps & HOSTCAPBLT_VS30)
658 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
659 if (caps & HOSTCAPBLT_VS33)
660 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
662 cfg->name = "FSL_SDHC";
664 if (caps & HOSTCAPBLT_HSS)
665 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
668 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
669 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
672 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
673 void mmc_adapter_card_type_ident(void)
678 card_id = QIXIS_READ(present) & QIXIS_SDID_MASK;
679 gd->arch.sdhc_adapter = card_id;
682 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
683 value = QIXIS_READ(brdcfg[5]);
684 value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
685 QIXIS_WRITE(brdcfg[5], value);
687 case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
688 value = QIXIS_READ(pwr_ctl[1]);
689 value |= QIXIS_EVDD_BY_SDHC_VS;
690 QIXIS_WRITE(pwr_ctl[1], value);
692 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44:
693 value = QIXIS_READ(brdcfg[5]);
694 value |= (QIXIS_SDCLKIN | QIXIS_SDCLKOUT);
695 QIXIS_WRITE(brdcfg[5], value);
697 case QIXIS_ESDHC_ADAPTER_TYPE_RSV:
699 case QIXIS_ESDHC_ADAPTER_TYPE_MMC:
701 case QIXIS_ESDHC_ADAPTER_TYPE_SD:
703 case QIXIS_ESDHC_NO_ADAPTER:
711 #ifdef CONFIG_OF_LIBFDT
712 __weak int esdhc_status_fixup(void *blob, const char *compat)
714 #ifdef CONFIG_FSL_ESDHC_PIN_MUX
715 if (!hwconfig("esdhc")) {
716 do_fixup_by_compat(blob, compat, "status", "disabled",
717 sizeof("disabled"), 1);
724 void fdt_fixup_esdhc(void *blob, bd_t *bd)
726 const char *compat = "fsl,esdhc";
728 if (esdhc_status_fixup(blob, compat))
731 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
732 gd->arch.sdhc_clk, 1);
736 #if !CONFIG_IS_ENABLED(DM_MMC)
737 static int esdhc_getcd(struct mmc *mmc)
739 struct fsl_esdhc_priv *priv = mmc->priv;
741 return esdhc_getcd_common(priv);
744 static int esdhc_init(struct mmc *mmc)
746 struct fsl_esdhc_priv *priv = mmc->priv;
748 return esdhc_init_common(priv, mmc);
751 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
752 struct mmc_data *data)
754 struct fsl_esdhc_priv *priv = mmc->priv;
756 return esdhc_send_cmd_common(priv, mmc, cmd, data);
759 static int esdhc_set_ios(struct mmc *mmc)
761 struct fsl_esdhc_priv *priv = mmc->priv;
763 return esdhc_set_ios_common(priv, mmc);
766 static const struct mmc_ops esdhc_ops = {
767 .getcd = esdhc_getcd,
769 .send_cmd = esdhc_send_cmd,
770 .set_ios = esdhc_set_ios,
773 int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
775 struct fsl_esdhc_plat *plat;
776 struct fsl_esdhc_priv *priv;
777 struct mmc_config *mmc_cfg;
783 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
786 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
792 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
793 priv->sdhc_clk = cfg->sdhc_clk;
794 if (gd->arch.sdhc_per_clk)
795 priv->is_sdhc_per_clk = true;
797 mmc_cfg = &plat->cfg;
799 if (cfg->max_bus_width == 8) {
800 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
802 } else if (cfg->max_bus_width == 4) {
803 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT;
804 } else if (cfg->max_bus_width == 1) {
805 mmc_cfg->host_caps |= MMC_MODE_1BIT;
807 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
809 printf("No max bus width provided. Assume 8-bit supported.\n");
812 #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK
813 if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK)
814 mmc_cfg->host_caps &= ~MMC_MODE_8BIT;
816 mmc_cfg->ops = &esdhc_ops;
818 fsl_esdhc_get_cfg_common(priv, mmc_cfg);
820 mmc = mmc_create(mmc_cfg, priv);
828 int fsl_esdhc_mmc_init(bd_t *bis)
830 struct fsl_esdhc_cfg *cfg;
832 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
833 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
834 /* Prefer peripheral clock which provides higher frequency. */
835 if (gd->arch.sdhc_per_clk)
836 cfg->sdhc_clk = gd->arch.sdhc_per_clk;
838 cfg->sdhc_clk = gd->arch.sdhc_clk;
839 return fsl_esdhc_initialize(bis, cfg);
842 static int fsl_esdhc_probe(struct udevice *dev)
844 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
845 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
846 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
850 addr = dev_read_addr(dev);
851 if (addr == FDT_ADDR_T_NONE)
854 priv->esdhc_regs = (struct fsl_esdhc *)lower_32_bits(addr);
856 priv->esdhc_regs = (struct fsl_esdhc *)addr;
860 if (gd->arch.sdhc_per_clk) {
861 priv->sdhc_clk = gd->arch.sdhc_per_clk;
862 priv->is_sdhc_per_clk = true;
864 priv->sdhc_clk = gd->arch.sdhc_clk;
867 if (priv->sdhc_clk <= 0) {
868 dev_err(dev, "Unable to get clk for %s\n", dev->name);
872 fsl_esdhc_get_cfg_common(priv, &plat->cfg);
874 mmc_of_parse(dev, &plat->cfg);
877 mmc->cfg = &plat->cfg;
882 return esdhc_init_common(priv, mmc);
885 static int fsl_esdhc_get_cd(struct udevice *dev)
887 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
888 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
890 if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE)
893 return esdhc_getcd_common(priv);
896 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
897 struct mmc_data *data)
899 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
900 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
902 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
905 static int fsl_esdhc_set_ios(struct udevice *dev)
907 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
908 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
910 return esdhc_set_ios_common(priv, &plat->mmc);
913 static const struct dm_mmc_ops fsl_esdhc_ops = {
914 .get_cd = fsl_esdhc_get_cd,
915 .send_cmd = fsl_esdhc_send_cmd,
916 .set_ios = fsl_esdhc_set_ios,
917 #ifdef MMC_SUPPORTS_TUNING
918 .execute_tuning = fsl_esdhc_execute_tuning,
922 static const struct udevice_id fsl_esdhc_ids[] = {
923 { .compatible = "fsl,esdhc", },
927 static int fsl_esdhc_bind(struct udevice *dev)
929 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
931 return mmc_bind(dev, &plat->mmc, &plat->cfg);
934 U_BOOT_DRIVER(fsl_esdhc) = {
935 .name = "fsl-esdhc-mmc",
937 .of_match = fsl_esdhc_ids,
938 .ops = &fsl_esdhc_ops,
939 .bind = fsl_esdhc_bind,
940 .probe = fsl_esdhc_probe,
941 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
942 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),