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;
28 #define SDHCI_IRQ_EN_BITS (IRQSTATEN_CC | IRQSTATEN_TC | \
30 IRQSTATEN_CTOE | IRQSTATEN_CCE | IRQSTATEN_CEBE | \
31 IRQSTATEN_CIE | IRQSTATEN_DTOE | IRQSTATEN_DCE | \
32 IRQSTATEN_DEBE | IRQSTATEN_BRR | IRQSTATEN_BWR | \
36 uint dsaddr; /* SDMA system address register */
37 uint blkattr; /* Block attributes register */
38 uint cmdarg; /* Command argument register */
39 uint xfertyp; /* Transfer type register */
40 uint cmdrsp0; /* Command response 0 register */
41 uint cmdrsp1; /* Command response 1 register */
42 uint cmdrsp2; /* Command response 2 register */
43 uint cmdrsp3; /* Command response 3 register */
44 uint datport; /* Buffer data port register */
45 uint prsstat; /* Present state register */
46 uint proctl; /* Protocol control register */
47 uint sysctl; /* System Control Register */
48 uint irqstat; /* Interrupt status register */
49 uint irqstaten; /* Interrupt status enable register */
50 uint irqsigen; /* Interrupt signal enable register */
51 uint autoc12err; /* Auto CMD error status register */
52 uint hostcapblt; /* Host controller capabilities register */
53 uint wml; /* Watermark level register */
54 char reserved1[8]; /* reserved */
55 uint fevt; /* Force event register */
56 uint admaes; /* ADMA error status register */
57 uint adsaddr; /* ADMA system address register */
59 uint hostver; /* Host controller version register */
60 char reserved3[4]; /* reserved */
61 uint dmaerraddr; /* DMA error address register */
62 char reserved4[4]; /* reserved */
63 uint dmaerrattr; /* DMA error attribute register */
64 char reserved5[4]; /* reserved */
65 uint hostcapblt2; /* Host controller capabilities register 2 */
66 char reserved6[756]; /* reserved */
67 uint esdhcctl; /* eSDHC control register */
70 struct fsl_esdhc_plat {
71 struct mmc_config cfg;
76 * struct fsl_esdhc_priv
78 * @esdhc_regs: registers of the sdhc controller
79 * @sdhc_clk: Current clk of the sdhc controller
80 * @bus_width: bus width, 1bit, 4bit or 8bit
83 * Following is used when Driver Model is enabled for MMC
84 * @dev: pointer for the device
85 * @non_removable: 0: removable; 1: non-removable
86 * @wp_enable: 1: enable checking wp; 0: no check
87 * @cd_gpio: gpio for card detection
88 * @wp_gpio: gpio for write protection
90 struct fsl_esdhc_priv {
91 struct fsl_esdhc *esdhc_regs;
92 unsigned int sdhc_clk;
95 unsigned int bus_width;
96 #if !CONFIG_IS_ENABLED(DM_MMC)
104 /* Return the XFERTYP flags for a given command and data packet */
105 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
110 xfertyp |= XFERTYP_DPSEL;
111 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
112 xfertyp |= XFERTYP_DMAEN;
114 if (data->blocks > 1) {
115 xfertyp |= XFERTYP_MSBSEL;
116 xfertyp |= XFERTYP_BCEN;
117 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
118 xfertyp |= XFERTYP_AC12EN;
122 if (data->flags & MMC_DATA_READ)
123 xfertyp |= XFERTYP_DTDSEL;
126 if (cmd->resp_type & MMC_RSP_CRC)
127 xfertyp |= XFERTYP_CCCEN;
128 if (cmd->resp_type & MMC_RSP_OPCODE)
129 xfertyp |= XFERTYP_CICEN;
130 if (cmd->resp_type & MMC_RSP_136)
131 xfertyp |= XFERTYP_RSPTYP_136;
132 else if (cmd->resp_type & MMC_RSP_BUSY)
133 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
134 else if (cmd->resp_type & MMC_RSP_PRESENT)
135 xfertyp |= XFERTYP_RSPTYP_48;
137 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
138 xfertyp |= XFERTYP_CMDTYP_ABORT;
140 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
143 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
145 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
147 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
148 struct mmc_data *data)
150 struct fsl_esdhc *regs = priv->esdhc_regs;
158 if (data->flags & MMC_DATA_READ) {
159 blocks = data->blocks;
162 start = get_timer(0);
163 size = data->blocksize;
164 irqstat = esdhc_read32(®s->irqstat);
165 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
166 if (get_timer(start) > PIO_TIMEOUT) {
167 printf("\nData Read Failed in PIO Mode.");
171 while (size && (!(irqstat & IRQSTAT_TC))) {
172 udelay(100); /* Wait before last byte transfer complete */
173 irqstat = esdhc_read32(®s->irqstat);
174 databuf = in_le32(®s->datport);
175 *((uint *)buffer) = databuf;
182 blocks = data->blocks;
183 buffer = (char *)data->src;
185 start = get_timer(0);
186 size = data->blocksize;
187 irqstat = esdhc_read32(®s->irqstat);
188 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
189 if (get_timer(start) > PIO_TIMEOUT) {
190 printf("\nData Write Failed in PIO Mode.");
194 while (size && (!(irqstat & IRQSTAT_TC))) {
195 udelay(100); /* Wait before last byte transfer complete */
196 databuf = *((uint *)buffer);
199 irqstat = esdhc_read32(®s->irqstat);
200 out_le32(®s->datport, databuf);
208 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
209 struct mmc_data *data)
212 struct fsl_esdhc *regs = priv->esdhc_regs;
213 #if defined(CONFIG_FSL_LAYERSCAPE)
218 wml_value = data->blocksize/4;
220 if (data->flags & MMC_DATA_READ) {
221 if (wml_value > WML_RD_WML_MAX)
222 wml_value = WML_RD_WML_MAX_VAL;
224 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
225 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
226 #if defined(CONFIG_FSL_LAYERSCAPE)
227 addr = virt_to_phys((void *)(data->dest));
228 if (upper_32_bits(addr))
229 printf("Error found for upper 32 bits\n");
231 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
233 esdhc_write32(®s->dsaddr, (u32)data->dest);
237 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
238 flush_dcache_range((ulong)data->src,
239 (ulong)data->src+data->blocks
242 if (wml_value > WML_WR_WML_MAX)
243 wml_value = WML_WR_WML_MAX_VAL;
244 if (priv->wp_enable) {
245 if ((esdhc_read32(®s->prsstat) &
246 PRSSTAT_WPSPL) == 0) {
247 printf("\nThe SD card is locked. Can not write to a locked card.\n\n");
252 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
254 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
255 #if defined(CONFIG_FSL_LAYERSCAPE)
256 addr = virt_to_phys((void *)(data->src));
257 if (upper_32_bits(addr))
258 printf("Error found for upper 32 bits\n");
260 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
262 esdhc_write32(®s->dsaddr, (u32)data->src);
267 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
269 /* Calculate the timeout period for data transactions */
271 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
272 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
273 * So, Number of SD Clock cycles for 0.25sec should be minimum
274 * (SD Clock/sec * 0.25 sec) SD Clock cycles
275 * = (mmc->clock * 1/4) SD Clock cycles
277 * => (2^(timeout+13)) >= mmc->clock * 1/4
278 * Taking log2 both the sides
279 * => timeout + 13 >= log2(mmc->clock/4)
280 * Rounding up to next power of 2
281 * => timeout + 13 = log2(mmc->clock/4) + 1
282 * => timeout + 13 = fls(mmc->clock/4)
284 * However, the MMC spec "It is strongly recommended for hosts to
285 * implement more than 500ms timeout value even if the card
286 * indicates the 250ms maximum busy length." Even the previous
287 * value of 300ms is known to be insufficient for some cards.
289 * => timeout + 13 = fls(mmc->clock/2)
291 timeout = fls(mmc->clock/2);
300 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC_A001
301 if ((timeout == 4) || (timeout == 8) || (timeout == 12))
305 #ifdef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
308 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
313 static void check_and_invalidate_dcache_range
314 (struct mmc_cmd *cmd,
315 struct mmc_data *data) {
318 unsigned size = roundup(ARCH_DMA_MINALIGN,
319 data->blocks*data->blocksize);
320 #if defined(CONFIG_FSL_LAYERSCAPE)
323 addr = virt_to_phys((void *)(data->dest));
324 if (upper_32_bits(addr))
325 printf("Error found for upper 32 bits\n");
327 start = lower_32_bits(addr);
329 start = (unsigned)data->dest;
332 invalidate_dcache_range(start, end);
336 * Sends a command out on the bus. Takes the mmc pointer,
337 * a command pointer, and an optional data pointer.
339 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
340 struct mmc_cmd *cmd, struct mmc_data *data)
345 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
346 struct fsl_esdhc *regs = priv->esdhc_regs;
349 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
350 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
354 esdhc_write32(®s->irqstat, -1);
358 /* Wait for the bus to be idle */
359 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
360 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
363 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
366 /* Wait at least 8 SD clock cycles before the next command */
368 * Note: This is way more than 8 cycles, but 1ms seems to
369 * resolve timing issues with some cards
373 /* Set up for a data transfer if we have one */
375 err = esdhc_setup_data(priv, mmc, data);
379 if (data->flags & MMC_DATA_READ)
380 check_and_invalidate_dcache_range(cmd, data);
383 /* Figure out the transfer arguments */
384 xfertyp = esdhc_xfertyp(cmd, data);
387 esdhc_write32(®s->irqsigen, 0);
389 /* Send the command */
390 esdhc_write32(®s->cmdarg, cmd->cmdarg);
391 esdhc_write32(®s->xfertyp, xfertyp);
393 /* Wait for the command to complete */
394 start = get_timer(0);
395 while (!(esdhc_read32(®s->irqstat) & flags)) {
396 if (get_timer(start) > 1000) {
402 irqstat = esdhc_read32(®s->irqstat);
404 if (irqstat & CMD_ERR) {
409 if (irqstat & IRQSTAT_CTOE) {
414 /* Workaround for ESDHC errata ENGcm03648 */
415 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
418 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
419 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
426 printf("Timeout waiting for DAT0 to go high!\n");
432 /* Copy the response to the response buffer */
433 if (cmd->resp_type & MMC_RSP_136) {
434 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
436 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
437 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
438 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
439 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
440 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
441 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
442 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
443 cmd->response[3] = (cmdrsp0 << 8);
445 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
447 /* Wait until all of the blocks are transferred */
449 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
450 esdhc_pio_read_write(priv, data);
453 irqstat = esdhc_read32(®s->irqstat);
455 if (irqstat & IRQSTAT_DTOE) {
460 if (irqstat & DATA_ERR) {
464 } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE);
467 * Need invalidate the dcache here again to avoid any
468 * cache-fill during the DMA operations such as the
469 * speculative pre-fetching etc.
471 if (data->flags & MMC_DATA_READ) {
472 check_and_invalidate_dcache_range(cmd, data);
478 /* Reset CMD and DATA portions on error */
480 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
482 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
486 esdhc_write32(®s->sysctl,
487 esdhc_read32(®s->sysctl) |
489 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
494 esdhc_write32(®s->irqstat, -1);
499 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
501 struct fsl_esdhc *regs = priv->esdhc_regs;
504 unsigned int sdhc_clk = priv->sdhc_clk;
509 if (clock < mmc->cfg->f_min)
510 clock = mmc->cfg->f_min;
512 while (sdhc_clk / (16 * pre_div) > clock && pre_div < 256)
515 while (sdhc_clk / (div * pre_div) > clock && div < 16)
521 clk = (pre_div << 8) | (div << 4);
523 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
525 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
528 value = PRSSTAT_SDSTB;
529 while (!(esdhc_read32(®s->prsstat) & value)) {
531 printf("fsl_esdhc: Internal clock never stabilised.\n");
538 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
541 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
542 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
544 struct fsl_esdhc *regs = priv->esdhc_regs;
548 value = esdhc_read32(®s->sysctl);
551 value |= SYSCTL_CKEN;
553 value &= ~SYSCTL_CKEN;
555 esdhc_write32(®s->sysctl, value);
558 value = PRSSTAT_SDSTB;
559 while (!(esdhc_read32(®s->prsstat) & value)) {
561 printf("fsl_esdhc: Internal clock never stabilised.\n");
570 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
572 struct fsl_esdhc *regs = priv->esdhc_regs;
574 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
575 /* Select to use peripheral clock */
576 esdhc_clock_control(priv, false);
577 esdhc_setbits32(®s->esdhcctl, ESDHCCTL_PCS);
578 esdhc_clock_control(priv, true);
580 /* Set the clock speed */
581 if (priv->clock != mmc->clock)
582 set_sysctl(priv, mmc, mmc->clock);
584 /* Set the bus width */
585 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
587 if (mmc->bus_width == 4)
588 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
589 else if (mmc->bus_width == 8)
590 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
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 /* Enable cache snooping */
611 esdhc_write32(®s->esdhcctl, 0x00000040);
613 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
615 /* Set the initial clock speed */
616 mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
618 /* Disable the BRR and BWR bits in IRQSTAT */
619 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
621 /* Put the PROCTL reg back to the default */
622 esdhc_write32(®s->proctl, PROCTL_INIT);
624 /* Set timout to the maximum value */
625 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
630 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
632 struct fsl_esdhc *regs = priv->esdhc_regs;
635 #ifdef CONFIG_ESDHC_DETECT_QUIRK
636 if (CONFIG_ESDHC_DETECT_QUIRK)
640 #if CONFIG_IS_ENABLED(DM_MMC)
641 if (priv->non_removable)
645 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
651 static int esdhc_reset(struct fsl_esdhc *regs)
655 /* reset the controller */
656 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
658 /* hardware clears the bit when it is done */
659 start = get_timer(0);
660 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
661 if (get_timer(start) > 100) {
662 printf("MMC/SD: Reset never completed.\n");
670 #if !CONFIG_IS_ENABLED(DM_MMC)
671 static int esdhc_getcd(struct mmc *mmc)
673 struct fsl_esdhc_priv *priv = mmc->priv;
675 return esdhc_getcd_common(priv);
678 static int esdhc_init(struct mmc *mmc)
680 struct fsl_esdhc_priv *priv = mmc->priv;
682 return esdhc_init_common(priv, mmc);
685 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
686 struct mmc_data *data)
688 struct fsl_esdhc_priv *priv = mmc->priv;
690 return esdhc_send_cmd_common(priv, mmc, cmd, data);
693 static int esdhc_set_ios(struct mmc *mmc)
695 struct fsl_esdhc_priv *priv = mmc->priv;
697 return esdhc_set_ios_common(priv, mmc);
700 static const struct mmc_ops esdhc_ops = {
701 .getcd = esdhc_getcd,
703 .send_cmd = esdhc_send_cmd,
704 .set_ios = esdhc_set_ios,
708 static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
709 struct fsl_esdhc_plat *plat)
711 struct mmc_config *cfg;
712 struct fsl_esdhc *regs;
713 u32 caps, voltage_caps;
719 regs = priv->esdhc_regs;
721 /* First reset the eSDHC controller */
722 ret = esdhc_reset(regs);
726 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN |
727 SYSCTL_IPGEN | SYSCTL_CKEN);
729 writel(SDHCI_IRQ_EN_BITS, ®s->irqstaten);
731 #ifndef CONFIG_DM_MMC
732 memset(cfg, '\0', sizeof(*cfg));
736 caps = esdhc_read32(®s->hostcapblt);
738 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
739 caps = caps & ~(ESDHC_HOSTCAPBLT_SRS |
740 ESDHC_HOSTCAPBLT_VS18 | ESDHC_HOSTCAPBLT_VS30);
743 /* T4240 host controller capabilities register should have VS33 bit */
744 #ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
745 caps = caps | ESDHC_HOSTCAPBLT_VS33;
748 if (caps & ESDHC_HOSTCAPBLT_VS18)
749 voltage_caps |= MMC_VDD_165_195;
750 if (caps & ESDHC_HOSTCAPBLT_VS30)
751 voltage_caps |= MMC_VDD_29_30 | MMC_VDD_30_31;
752 if (caps & ESDHC_HOSTCAPBLT_VS33)
753 voltage_caps |= MMC_VDD_32_33 | MMC_VDD_33_34;
755 cfg->name = "FSL_SDHC";
756 #if !CONFIG_IS_ENABLED(DM_MMC)
757 cfg->ops = &esdhc_ops;
759 #ifdef CONFIG_SYS_SD_VOLTAGE
760 cfg->voltages = CONFIG_SYS_SD_VOLTAGE;
762 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
764 if ((cfg->voltages & voltage_caps) == 0) {
765 printf("voltage not supported by controller\n");
769 if (priv->bus_width == 8)
770 cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
771 else if (priv->bus_width == 4)
772 cfg->host_caps = MMC_MODE_4BIT;
774 cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
776 if (priv->bus_width > 0) {
777 if (priv->bus_width < 8)
778 cfg->host_caps &= ~MMC_MODE_8BIT;
779 if (priv->bus_width < 4)
780 cfg->host_caps &= ~MMC_MODE_4BIT;
783 if (caps & ESDHC_HOSTCAPBLT_HSS)
784 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
786 #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK
787 if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK)
788 cfg->host_caps &= ~MMC_MODE_8BIT;
792 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
794 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
799 #if !CONFIG_IS_ENABLED(DM_MMC)
800 static int fsl_esdhc_cfg_to_priv(struct fsl_esdhc_cfg *cfg,
801 struct fsl_esdhc_priv *priv)
806 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
807 priv->bus_width = cfg->max_bus_width;
808 priv->sdhc_clk = cfg->sdhc_clk;
809 priv->wp_enable = cfg->wp_enable;
814 int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
816 struct fsl_esdhc_plat *plat;
817 struct fsl_esdhc_priv *priv;
824 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
827 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
833 ret = fsl_esdhc_cfg_to_priv(cfg, priv);
835 debug("%s xlate failure\n", __func__);
841 ret = fsl_esdhc_init(priv, plat);
843 debug("%s init failure\n", __func__);
849 mmc = mmc_create(&plat->cfg, priv);
858 int fsl_esdhc_mmc_init(bd_t *bis)
860 struct fsl_esdhc_cfg *cfg;
862 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
863 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
864 cfg->sdhc_clk = gd->arch.sdhc_clk;
865 return fsl_esdhc_initialize(bis, cfg);
869 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
870 void mmc_adapter_card_type_ident(void)
875 card_id = QIXIS_READ(present) & QIXIS_SDID_MASK;
876 gd->arch.sdhc_adapter = card_id;
879 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
880 value = QIXIS_READ(brdcfg[5]);
881 value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
882 QIXIS_WRITE(brdcfg[5], value);
884 case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
885 value = QIXIS_READ(pwr_ctl[1]);
886 value |= QIXIS_EVDD_BY_SDHC_VS;
887 QIXIS_WRITE(pwr_ctl[1], value);
889 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44:
890 value = QIXIS_READ(brdcfg[5]);
891 value |= (QIXIS_SDCLKIN | QIXIS_SDCLKOUT);
892 QIXIS_WRITE(brdcfg[5], value);
894 case QIXIS_ESDHC_ADAPTER_TYPE_RSV:
896 case QIXIS_ESDHC_ADAPTER_TYPE_MMC:
898 case QIXIS_ESDHC_ADAPTER_TYPE_SD:
900 case QIXIS_ESDHC_NO_ADAPTER:
908 #ifdef CONFIG_OF_LIBFDT
909 __weak int esdhc_status_fixup(void *blob, const char *compat)
911 #ifdef CONFIG_FSL_ESDHC_PIN_MUX
912 if (!hwconfig("esdhc")) {
913 do_fixup_by_compat(blob, compat, "status", "disabled",
914 sizeof("disabled"), 1);
921 void fdt_fixup_esdhc(void *blob, bd_t *bd)
923 const char *compat = "fsl,esdhc";
925 if (esdhc_status_fixup(blob, compat))
928 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
929 do_fixup_by_compat_u32(blob, compat, "peripheral-frequency",
930 gd->arch.sdhc_clk, 1);
932 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
933 gd->arch.sdhc_clk, 1);
935 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
936 do_fixup_by_compat_u32(blob, compat, "adapter-type",
937 (u32)(gd->arch.sdhc_adapter), 1);
942 #if CONFIG_IS_ENABLED(DM_MMC)
944 #include <asm/arch/clock.h>
946 static int fsl_esdhc_probe(struct udevice *dev)
948 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
949 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
950 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
956 addr = dev_read_addr(dev);
957 if (addr == FDT_ADDR_T_NONE)
960 priv->esdhc_regs = (struct fsl_esdhc *)lower_32_bits(addr);
962 priv->esdhc_regs = (struct fsl_esdhc *)addr;
966 val = dev_read_u32_default(dev, "bus-width", -1);
974 if (dev_read_bool(dev, "non-removable")) {
975 priv->non_removable = 1;
977 priv->non_removable = 0;
982 if (IS_ENABLED(CONFIG_CLK)) {
983 /* Assigned clock already set clock */
984 ret = clk_get_by_name(dev, "per", &priv->per_clk);
986 printf("Failed to get per_clk\n");
989 ret = clk_enable(&priv->per_clk);
991 printf("Failed to enable per_clk\n");
995 priv->sdhc_clk = clk_get_rate(&priv->per_clk);
998 priv->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK + dev->seq);
1000 priv->sdhc_clk = gd->arch.sdhc_clk;
1002 if (priv->sdhc_clk <= 0) {
1003 dev_err(dev, "Unable to get clk for %s\n", dev->name);
1008 ret = fsl_esdhc_init(priv, plat);
1010 dev_err(dev, "fsl_esdhc_init failure\n");
1014 mmc_of_parse(dev, &plat->cfg);
1017 mmc->cfg = &plat->cfg;
1022 return esdhc_init_common(priv, mmc);
1025 static int fsl_esdhc_get_cd(struct udevice *dev)
1027 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1029 return esdhc_getcd_common(priv);
1032 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
1033 struct mmc_data *data)
1035 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1036 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1038 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
1041 static int fsl_esdhc_set_ios(struct udevice *dev)
1043 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1044 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1046 return esdhc_set_ios_common(priv, &plat->mmc);
1049 static const struct dm_mmc_ops fsl_esdhc_ops = {
1050 .get_cd = fsl_esdhc_get_cd,
1051 .send_cmd = fsl_esdhc_send_cmd,
1052 .set_ios = fsl_esdhc_set_ios,
1053 #ifdef MMC_SUPPORTS_TUNING
1054 .execute_tuning = fsl_esdhc_execute_tuning,
1058 static const struct udevice_id fsl_esdhc_ids[] = {
1059 { .compatible = "fsl,esdhc", },
1063 static int fsl_esdhc_bind(struct udevice *dev)
1065 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1067 return mmc_bind(dev, &plat->mmc, &plat->cfg);
1070 U_BOOT_DRIVER(fsl_esdhc) = {
1071 .name = "fsl-esdhc-mmc",
1073 .of_match = fsl_esdhc_ids,
1074 .ops = &fsl_esdhc_ops,
1075 .bind = fsl_esdhc_bind,
1076 .probe = fsl_esdhc_probe,
1077 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
1078 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),