2 * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
5 * Based vaguely on the pxa mmc code:
7 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
9 * SPDX-License-Identifier: GPL-2.0+
19 #include <power/regulator.h>
21 #include <fsl_esdhc.h>
22 #include <fdt_support.h>
25 #include <asm-generic/gpio.h>
27 DECLARE_GLOBAL_DATA_PTR;
29 #define SDHCI_IRQ_EN_BITS (IRQSTATEN_CC | IRQSTATEN_TC | \
31 IRQSTATEN_CTOE | IRQSTATEN_CCE | IRQSTATEN_CEBE | \
32 IRQSTATEN_CIE | IRQSTATEN_DTOE | IRQSTATEN_DCE | \
33 IRQSTATEN_DEBE | IRQSTATEN_BRR | IRQSTATEN_BWR | \
37 uint dsaddr; /* SDMA system address register */
38 uint blkattr; /* Block attributes register */
39 uint cmdarg; /* Command argument register */
40 uint xfertyp; /* Transfer type register */
41 uint cmdrsp0; /* Command response 0 register */
42 uint cmdrsp1; /* Command response 1 register */
43 uint cmdrsp2; /* Command response 2 register */
44 uint cmdrsp3; /* Command response 3 register */
45 uint datport; /* Buffer data port register */
46 uint prsstat; /* Present state register */
47 uint proctl; /* Protocol control register */
48 uint sysctl; /* System Control Register */
49 uint irqstat; /* Interrupt status register */
50 uint irqstaten; /* Interrupt status enable register */
51 uint irqsigen; /* Interrupt signal enable register */
52 uint autoc12err; /* Auto CMD error status register */
53 uint hostcapblt; /* Host controller capabilities register */
54 uint wml; /* Watermark level register */
55 uint mixctrl; /* For USDHC */
56 char reserved1[4]; /* reserved */
57 uint fevt; /* Force event register */
58 uint admaes; /* ADMA error status register */
59 uint adsaddr; /* ADMA system address register */
63 uint clktunectrlstatus;
69 uint hostver; /* Host controller version register */
70 char reserved5[4]; /* reserved */
71 uint dmaerraddr; /* DMA error address register */
72 char reserved6[4]; /* reserved */
73 uint dmaerrattr; /* DMA error attribute register */
74 char reserved7[4]; /* reserved */
75 uint hostcapblt2; /* Host controller capabilities register 2 */
76 char reserved8[8]; /* reserved */
77 uint tcr; /* Tuning control register */
78 char reserved9[28]; /* reserved */
79 uint sddirctl; /* SD direction control register */
80 char reserved10[712];/* reserved */
81 uint scr; /* eSDHC control register */
84 struct fsl_esdhc_plat {
85 struct mmc_config cfg;
90 * struct fsl_esdhc_priv
92 * @esdhc_regs: registers of the sdhc controller
93 * @sdhc_clk: Current clk of the sdhc controller
94 * @bus_width: bus width, 1bit, 4bit or 8bit
97 * Following is used when Driver Model is enabled for MMC
98 * @dev: pointer for the device
99 * @non_removable: 0: removable; 1: non-removable
100 * @wp_enable: 1: enable checking wp; 0: no check
101 * @vs18_enable: 1: use 1.8V voltage; 0: use 3.3V
102 * @cd_gpio: gpio for card detection
103 * @wp_gpio: gpio for write protection
105 struct fsl_esdhc_priv {
106 struct fsl_esdhc *esdhc_regs;
107 unsigned int sdhc_clk;
108 unsigned int bus_width;
109 #if !CONFIG_IS_ENABLED(BLK)
116 #ifdef CONFIG_DM_GPIO
117 struct gpio_desc cd_gpio;
118 struct gpio_desc wp_gpio;
122 /* Return the XFERTYP flags for a given command and data packet */
123 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
128 xfertyp |= XFERTYP_DPSEL;
129 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
130 xfertyp |= XFERTYP_DMAEN;
132 if (data->blocks > 1) {
133 xfertyp |= XFERTYP_MSBSEL;
134 xfertyp |= XFERTYP_BCEN;
135 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
136 xfertyp |= XFERTYP_AC12EN;
140 if (data->flags & MMC_DATA_READ)
141 xfertyp |= XFERTYP_DTDSEL;
144 if (cmd->resp_type & MMC_RSP_CRC)
145 xfertyp |= XFERTYP_CCCEN;
146 if (cmd->resp_type & MMC_RSP_OPCODE)
147 xfertyp |= XFERTYP_CICEN;
148 if (cmd->resp_type & MMC_RSP_136)
149 xfertyp |= XFERTYP_RSPTYP_136;
150 else if (cmd->resp_type & MMC_RSP_BUSY)
151 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
152 else if (cmd->resp_type & MMC_RSP_PRESENT)
153 xfertyp |= XFERTYP_RSPTYP_48;
155 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
156 xfertyp |= XFERTYP_CMDTYP_ABORT;
158 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
161 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
163 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
165 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
166 struct mmc_data *data)
168 struct fsl_esdhc *regs = priv->esdhc_regs;
176 if (data->flags & MMC_DATA_READ) {
177 blocks = data->blocks;
180 start = get_timer(0);
181 size = data->blocksize;
182 irqstat = esdhc_read32(®s->irqstat);
183 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
184 if (get_timer(start) > PIO_TIMEOUT) {
185 printf("\nData Read Failed in PIO Mode.");
189 while (size && (!(irqstat & IRQSTAT_TC))) {
190 udelay(100); /* Wait before last byte transfer complete */
191 irqstat = esdhc_read32(®s->irqstat);
192 databuf = in_le32(®s->datport);
193 *((uint *)buffer) = databuf;
200 blocks = data->blocks;
201 buffer = (char *)data->src;
203 start = get_timer(0);
204 size = data->blocksize;
205 irqstat = esdhc_read32(®s->irqstat);
206 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
207 if (get_timer(start) > PIO_TIMEOUT) {
208 printf("\nData Write Failed in PIO Mode.");
212 while (size && (!(irqstat & IRQSTAT_TC))) {
213 udelay(100); /* Wait before last byte transfer complete */
214 databuf = *((uint *)buffer);
217 irqstat = esdhc_read32(®s->irqstat);
218 out_le32(®s->datport, databuf);
226 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
227 struct mmc_data *data)
230 struct fsl_esdhc *regs = priv->esdhc_regs;
231 #if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234)
236 wml_value = data->blocksize/4;
238 if (data->flags & MMC_DATA_READ) {
239 if (wml_value > WML_RD_WML_MAX)
240 wml_value = WML_RD_WML_MAX_VAL;
242 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
243 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
244 #if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234)
245 addr = virt_to_phys((void *)(data->dest));
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->dest);
255 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
256 flush_dcache_range((ulong)data->src,
257 (ulong)data->src+data->blocks
260 if (wml_value > WML_WR_WML_MAX)
261 wml_value = WML_WR_WML_MAX_VAL;
262 if (priv->wp_enable) {
263 if ((esdhc_read32(®s->prsstat) &
264 PRSSTAT_WPSPL) == 0) {
265 printf("\nThe SD card is locked. Can not write to a locked card.\n\n");
270 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
272 #ifndef CONFIG_SYS_FSL_ESDHC_USE_PIO
273 #if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234)
274 addr = virt_to_phys((void *)(data->src));
275 if (upper_32_bits(addr))
276 printf("Error found for upper 32 bits\n");
278 esdhc_write32(®s->dsaddr, lower_32_bits(addr));
280 esdhc_write32(®s->dsaddr, (u32)data->src);
285 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
287 /* Calculate the timeout period for data transactions */
289 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
290 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
291 * So, Number of SD Clock cycles for 0.25sec should be minimum
292 * (SD Clock/sec * 0.25 sec) SD Clock cycles
293 * = (mmc->clock * 1/4) SD Clock cycles
295 * => (2^(timeout+13)) >= mmc->clock * 1/4
296 * Taking log2 both the sides
297 * => timeout + 13 >= log2(mmc->clock/4)
298 * Rounding up to next power of 2
299 * => timeout + 13 = log2(mmc->clock/4) + 1
300 * => timeout + 13 = fls(mmc->clock/4)
302 * However, the MMC spec "It is strongly recommended for hosts to
303 * implement more than 500ms timeout value even if the card
304 * indicates the 250ms maximum busy length." Even the previous
305 * value of 300ms is known to be insufficient for some cards.
307 * => timeout + 13 = fls(mmc->clock/2)
309 timeout = fls(mmc->clock/2);
318 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC_A001
319 if ((timeout == 4) || (timeout == 8) || (timeout == 12))
323 #ifdef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
326 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
331 static void check_and_invalidate_dcache_range
332 (struct mmc_cmd *cmd,
333 struct mmc_data *data) {
336 unsigned size = roundup(ARCH_DMA_MINALIGN,
337 data->blocks*data->blocksize);
338 #if defined(CONFIG_FSL_LAYERSCAPE) || defined(CONFIG_S32V234)
341 addr = virt_to_phys((void *)(data->dest));
342 if (upper_32_bits(addr))
343 printf("Error found for upper 32 bits\n");
345 start = lower_32_bits(addr);
347 start = (unsigned)data->dest;
350 invalidate_dcache_range(start, end);
354 * Sends a command out on the bus. Takes the mmc pointer,
355 * a command pointer, and an optional data pointer.
357 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
358 struct mmc_cmd *cmd, struct mmc_data *data)
363 struct fsl_esdhc *regs = priv->esdhc_regs;
365 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
366 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
370 esdhc_write32(®s->irqstat, -1);
374 /* Wait for the bus to be idle */
375 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
376 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
379 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
382 /* Wait at least 8 SD clock cycles before the next command */
384 * Note: This is way more than 8 cycles, but 1ms seems to
385 * resolve timing issues with some cards
389 /* Set up for a data transfer if we have one */
391 err = esdhc_setup_data(priv, mmc, data);
395 if (data->flags & MMC_DATA_READ)
396 check_and_invalidate_dcache_range(cmd, data);
399 /* Figure out the transfer arguments */
400 xfertyp = esdhc_xfertyp(cmd, data);
403 esdhc_write32(®s->irqsigen, 0);
405 /* Send the command */
406 esdhc_write32(®s->cmdarg, cmd->cmdarg);
407 #if defined(CONFIG_FSL_USDHC)
408 esdhc_write32(®s->mixctrl,
409 (esdhc_read32(®s->mixctrl) & 0xFFFFFF80) | (xfertyp & 0x7F)
410 | (mmc->ddr_mode ? XFERTYP_DDREN : 0));
411 esdhc_write32(®s->xfertyp, xfertyp & 0xFFFF0000);
413 esdhc_write32(®s->xfertyp, xfertyp);
416 /* Wait for the command to complete */
417 while (!(esdhc_read32(®s->irqstat) & (IRQSTAT_CC | IRQSTAT_CTOE)))
420 irqstat = esdhc_read32(®s->irqstat);
422 if (irqstat & CMD_ERR) {
427 if (irqstat & IRQSTAT_CTOE) {
432 /* Switch voltage to 1.8V if CMD11 succeeded */
433 if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V) {
434 esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT);
436 printf("Run CMD11 1.8V switch\n");
437 /* Sleep for 5 ms - max time for card to switch to 1.8V */
441 /* Workaround for ESDHC errata ENGcm03648 */
442 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
445 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
446 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
453 printf("Timeout waiting for DAT0 to go high!\n");
459 /* Copy the response to the response buffer */
460 if (cmd->resp_type & MMC_RSP_136) {
461 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
463 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
464 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
465 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
466 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
467 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
468 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
469 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
470 cmd->response[3] = (cmdrsp0 << 8);
472 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
474 /* Wait until all of the blocks are transferred */
476 #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO
477 esdhc_pio_read_write(priv, data);
480 irqstat = esdhc_read32(®s->irqstat);
482 if (irqstat & IRQSTAT_DTOE) {
487 if (irqstat & DATA_ERR) {
491 } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE);
494 * Need invalidate the dcache here again to avoid any
495 * cache-fill during the DMA operations such as the
496 * speculative pre-fetching etc.
498 if (data->flags & MMC_DATA_READ)
499 check_and_invalidate_dcache_range(cmd, data);
504 /* Reset CMD and DATA portions on error */
506 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
508 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
512 esdhc_write32(®s->sysctl,
513 esdhc_read32(®s->sysctl) |
515 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
519 /* If this was CMD11, then notify that power cycle is needed */
520 if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V)
521 printf("CMD11 to switch to 1.8V mode failed, card requires power cycle.\n");
524 esdhc_write32(®s->irqstat, -1);
529 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
537 int ddr_pre_div = mmc->ddr_mode ? 2 : 1;
538 struct fsl_esdhc *regs = priv->esdhc_regs;
539 int sdhc_clk = priv->sdhc_clk;
542 if (clock < mmc->cfg->f_min)
543 clock = mmc->cfg->f_min;
545 while (sdhc_clk / (16 * pre_div * ddr_pre_div) > clock && pre_div < 256)
548 while (sdhc_clk / (div * pre_div * ddr_pre_div) > clock && div < 16)
554 clk = (pre_div << 8) | (div << 4);
556 #ifdef CONFIG_FSL_USDHC
557 esdhc_clrbits32(®s->vendorspec, VENDORSPEC_CKEN);
559 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
562 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
566 #ifdef CONFIG_FSL_USDHC
567 esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN | VENDORSPEC_CKEN);
569 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
574 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
575 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
577 struct fsl_esdhc *regs = priv->esdhc_regs;
581 value = esdhc_read32(®s->sysctl);
584 value |= SYSCTL_CKEN;
586 value &= ~SYSCTL_CKEN;
588 esdhc_write32(®s->sysctl, value);
591 value = PRSSTAT_SDSTB;
592 while (!(esdhc_read32(®s->prsstat) & value)) {
594 printf("fsl_esdhc: Internal clock never stabilised.\n");
603 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
605 struct fsl_esdhc *regs = priv->esdhc_regs;
607 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
608 /* Select to use peripheral clock */
609 esdhc_clock_control(priv, false);
610 esdhc_setbits32(®s->scr, ESDHCCTL_PCS);
611 esdhc_clock_control(priv, true);
613 /* Set the clock speed */
614 set_sysctl(priv, mmc, mmc->clock);
616 /* Set the bus width */
617 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
619 if (mmc->bus_width == 4)
620 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
621 else if (mmc->bus_width == 8)
622 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
627 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
629 struct fsl_esdhc *regs = priv->esdhc_regs;
632 /* Reset the entire host controller */
633 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
635 /* Wait until the controller is available */
636 start = get_timer(0);
637 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
638 if (get_timer(start) > 1000)
642 #if defined(CONFIG_FSL_USDHC)
643 /* RSTA doesn't reset MMC_BOOT register, so manually reset it */
644 esdhc_write32(®s->mmcboot, 0x0);
645 /* Reset MIX_CTRL and CLK_TUNE_CTRL_STATUS regs to 0 */
646 esdhc_write32(®s->mixctrl, 0x0);
647 esdhc_write32(®s->clktunectrlstatus, 0x0);
649 /* Put VEND_SPEC to default value */
650 esdhc_write32(®s->vendorspec, VENDORSPEC_INIT);
652 /* Disable DLL_CTRL delay line */
653 esdhc_write32(®s->dllctrl, 0x0);
657 /* Enable cache snooping */
658 esdhc_write32(®s->scr, 0x00000040);
661 #ifndef CONFIG_FSL_USDHC
662 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
664 esdhc_setbits32(®s->vendorspec, VENDORSPEC_HCKEN | VENDORSPEC_IPGEN);
667 /* Set the initial clock speed */
668 mmc_set_clock(mmc, 400000, false);
670 /* Disable the BRR and BWR bits in IRQSTAT */
671 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
673 /* Put the PROCTL reg back to the default */
674 esdhc_write32(®s->proctl, PROCTL_INIT);
676 /* Set timout to the maximum value */
677 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
679 if (priv->vs18_enable)
680 esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT);
685 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
687 struct fsl_esdhc *regs = priv->esdhc_regs;
690 #ifdef CONFIG_ESDHC_DETECT_QUIRK
691 if (CONFIG_ESDHC_DETECT_QUIRK)
695 #if CONFIG_IS_ENABLED(DM_MMC)
696 if (priv->non_removable)
698 #ifdef CONFIG_DM_GPIO
699 if (dm_gpio_is_valid(&priv->cd_gpio))
700 return dm_gpio_get_value(&priv->cd_gpio);
704 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
710 static int esdhc_reset(struct fsl_esdhc *regs)
714 /* reset the controller */
715 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
717 /* hardware clears the bit when it is done */
718 start = get_timer(0);
719 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
720 if (get_timer(start) > 100) {
721 printf("MMC/SD: Reset never completed.\n");
729 #if !CONFIG_IS_ENABLED(DM_MMC)
730 static int esdhc_getcd(struct mmc *mmc)
732 struct fsl_esdhc_priv *priv = mmc->priv;
734 return esdhc_getcd_common(priv);
737 static int esdhc_init(struct mmc *mmc)
739 struct fsl_esdhc_priv *priv = mmc->priv;
741 return esdhc_init_common(priv, mmc);
744 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
745 struct mmc_data *data)
747 struct fsl_esdhc_priv *priv = mmc->priv;
749 return esdhc_send_cmd_common(priv, mmc, cmd, data);
752 static int esdhc_set_ios(struct mmc *mmc)
754 struct fsl_esdhc_priv *priv = mmc->priv;
756 return esdhc_set_ios_common(priv, mmc);
759 static const struct mmc_ops esdhc_ops = {
760 .getcd = esdhc_getcd,
762 .send_cmd = esdhc_send_cmd,
763 .set_ios = esdhc_set_ios,
767 static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
768 struct fsl_esdhc_plat *plat)
770 struct mmc_config *cfg;
771 struct fsl_esdhc *regs;
772 u32 caps, voltage_caps;
778 regs = priv->esdhc_regs;
780 /* First reset the eSDHC controller */
781 ret = esdhc_reset(regs);
785 #ifndef CONFIG_FSL_USDHC
786 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN
787 | SYSCTL_IPGEN | SYSCTL_CKEN);
789 esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN |
790 VENDORSPEC_HCKEN | VENDORSPEC_IPGEN | VENDORSPEC_CKEN);
793 if (priv->vs18_enable)
794 esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT);
796 writel(SDHCI_IRQ_EN_BITS, ®s->irqstaten);
798 #ifndef CONFIG_DM_MMC
799 memset(cfg, '\0', sizeof(*cfg));
803 caps = esdhc_read32(®s->hostcapblt);
805 #ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
806 caps = caps & ~(ESDHC_HOSTCAPBLT_SRS |
807 ESDHC_HOSTCAPBLT_VS18 | ESDHC_HOSTCAPBLT_VS30);
810 /* T4240 host controller capabilities register should have VS33 bit */
811 #ifdef CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
812 caps = caps | ESDHC_HOSTCAPBLT_VS33;
815 if (caps & ESDHC_HOSTCAPBLT_VS18)
816 voltage_caps |= MMC_VDD_165_195;
817 if (caps & ESDHC_HOSTCAPBLT_VS30)
818 voltage_caps |= MMC_VDD_29_30 | MMC_VDD_30_31;
819 if (caps & ESDHC_HOSTCAPBLT_VS33)
820 voltage_caps |= MMC_VDD_32_33 | MMC_VDD_33_34;
822 cfg->name = "FSL_SDHC";
823 #if !CONFIG_IS_ENABLED(DM_MMC)
824 cfg->ops = &esdhc_ops;
826 #ifdef CONFIG_SYS_SD_VOLTAGE
827 cfg->voltages = CONFIG_SYS_SD_VOLTAGE;
829 cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
831 if ((cfg->voltages & voltage_caps) == 0) {
832 printf("voltage not supported by controller\n");
836 if (priv->bus_width == 8)
837 cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
838 else if (priv->bus_width == 4)
839 cfg->host_caps = MMC_MODE_4BIT;
841 cfg->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
842 #ifdef CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE
843 cfg->host_caps |= MMC_MODE_DDR_52MHz;
846 if (priv->bus_width > 0) {
847 if (priv->bus_width < 8)
848 cfg->host_caps &= ~MMC_MODE_8BIT;
849 if (priv->bus_width < 4)
850 cfg->host_caps &= ~MMC_MODE_4BIT;
853 if (caps & ESDHC_HOSTCAPBLT_HSS)
854 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
856 #ifdef CONFIG_ESDHC_DETECT_8_BIT_QUIRK
857 if (CONFIG_ESDHC_DETECT_8_BIT_QUIRK)
858 cfg->host_caps &= ~MMC_MODE_8BIT;
862 cfg->f_max = min(priv->sdhc_clk, (u32)52000000);
864 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
869 #if !CONFIG_IS_ENABLED(DM_MMC)
870 static int fsl_esdhc_cfg_to_priv(struct fsl_esdhc_cfg *cfg,
871 struct fsl_esdhc_priv *priv)
876 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
877 priv->bus_width = cfg->max_bus_width;
878 priv->sdhc_clk = cfg->sdhc_clk;
879 priv->wp_enable = cfg->wp_enable;
880 priv->vs18_enable = cfg->vs18_enable;
885 int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
887 struct fsl_esdhc_plat *plat;
888 struct fsl_esdhc_priv *priv;
895 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
898 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
904 ret = fsl_esdhc_cfg_to_priv(cfg, priv);
906 debug("%s xlate failure\n", __func__);
912 ret = fsl_esdhc_init(priv, plat);
914 debug("%s init failure\n", __func__);
920 mmc = mmc_create(&plat->cfg, priv);
929 int fsl_esdhc_mmc_init(bd_t *bis)
931 struct fsl_esdhc_cfg *cfg;
933 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
934 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
935 cfg->sdhc_clk = gd->arch.sdhc_clk;
936 return fsl_esdhc_initialize(bis, cfg);
940 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
941 void mmc_adapter_card_type_ident(void)
946 card_id = QIXIS_READ(present) & QIXIS_SDID_MASK;
947 gd->arch.sdhc_adapter = card_id;
950 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC45:
951 value = QIXIS_READ(brdcfg[5]);
952 value |= (QIXIS_DAT4 | QIXIS_DAT5_6_7);
953 QIXIS_WRITE(brdcfg[5], value);
955 case QIXIS_ESDHC_ADAPTER_TYPE_SDMMC_LEGACY:
956 value = QIXIS_READ(pwr_ctl[1]);
957 value |= QIXIS_EVDD_BY_SDHC_VS;
958 QIXIS_WRITE(pwr_ctl[1], value);
960 case QIXIS_ESDHC_ADAPTER_TYPE_EMMC44:
961 value = QIXIS_READ(brdcfg[5]);
962 value |= (QIXIS_SDCLKIN | QIXIS_SDCLKOUT);
963 QIXIS_WRITE(brdcfg[5], value);
965 case QIXIS_ESDHC_ADAPTER_TYPE_RSV:
967 case QIXIS_ESDHC_ADAPTER_TYPE_MMC:
969 case QIXIS_ESDHC_ADAPTER_TYPE_SD:
971 case QIXIS_ESDHC_NO_ADAPTER:
979 #ifdef CONFIG_OF_LIBFDT
980 __weak int esdhc_status_fixup(void *blob, const char *compat)
982 #ifdef CONFIG_FSL_ESDHC_PIN_MUX
983 if (!hwconfig("esdhc")) {
984 do_fixup_by_compat(blob, compat, "status", "disabled",
985 sizeof("disabled"), 1);
992 void fdt_fixup_esdhc(void *blob, bd_t *bd)
994 const char *compat = "fsl,esdhc";
996 if (esdhc_status_fixup(blob, compat))
999 #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK
1000 do_fixup_by_compat_u32(blob, compat, "peripheral-frequency",
1001 gd->arch.sdhc_clk, 1);
1003 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
1004 gd->arch.sdhc_clk, 1);
1006 #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
1007 do_fixup_by_compat_u32(blob, compat, "adapter-type",
1008 (u32)(gd->arch.sdhc_adapter), 1);
1013 #if CONFIG_IS_ENABLED(DM_MMC)
1014 #include <asm/arch/clock.h>
1015 __weak void init_clk_usdhc(u32 index)
1019 static int fsl_esdhc_probe(struct udevice *dev)
1021 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1022 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1023 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1024 #ifdef CONFIG_DM_REGULATOR
1025 struct udevice *vqmmc_dev;
1032 addr = dev_read_addr(dev);
1033 if (addr == FDT_ADDR_T_NONE)
1036 priv->esdhc_regs = (struct fsl_esdhc *)addr;
1039 val = dev_read_u32_default(dev, "bus-width", -1);
1041 priv->bus_width = 8;
1043 priv->bus_width = 4;
1045 priv->bus_width = 1;
1047 if (dev_read_bool(dev, "non-removable")) {
1048 priv->non_removable = 1;
1050 priv->non_removable = 0;
1051 #ifdef CONFIG_DM_GPIO
1052 gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
1057 priv->wp_enable = 1;
1059 #ifdef CONFIG_DM_GPIO
1060 ret = gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio,
1063 priv->wp_enable = 0;
1066 priv->vs18_enable = 0;
1068 #ifdef CONFIG_DM_REGULATOR
1070 * If emmc I/O has a fixed voltage at 1.8V, this must be provided,
1071 * otherwise, emmc will work abnormally.
1073 ret = device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_dev);
1075 dev_dbg(dev, "no vqmmc-supply\n");
1077 ret = regulator_set_enable(vqmmc_dev, true);
1079 dev_err(dev, "fail to enable vqmmc-supply\n");
1083 if (regulator_get_value(vqmmc_dev) == 1800000)
1084 priv->vs18_enable = 1;
1090 * Because lack of clk driver, if SDHC clk is not enabled,
1091 * need to enable it first before this driver is invoked.
1093 * we use MXC_ESDHC_CLK to get clk freq.
1094 * If one would like to make this function work,
1095 * the aliases should be provided in dts as this:
1103 * Then if your board only supports mmc2 and mmc3, but we can
1104 * correctly get the seq as 2 and 3, then let mxc_get_clock
1108 init_clk_usdhc(dev->seq);
1110 priv->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK + dev->seq);
1111 if (priv->sdhc_clk <= 0) {
1112 dev_err(dev, "Unable to get clk for %s\n", dev->name);
1116 ret = fsl_esdhc_init(priv, plat);
1118 dev_err(dev, "fsl_esdhc_init failure\n");
1123 mmc->cfg = &plat->cfg;
1127 return esdhc_init_common(priv, mmc);
1130 #if CONFIG_IS_ENABLED(DM_MMC)
1131 static int fsl_esdhc_get_cd(struct udevice *dev)
1133 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1136 return esdhc_getcd_common(priv);
1139 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
1140 struct mmc_data *data)
1142 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1143 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1145 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
1148 static int fsl_esdhc_set_ios(struct udevice *dev)
1150 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1151 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1153 return esdhc_set_ios_common(priv, &plat->mmc);
1156 static const struct dm_mmc_ops fsl_esdhc_ops = {
1157 .get_cd = fsl_esdhc_get_cd,
1158 .send_cmd = fsl_esdhc_send_cmd,
1159 .set_ios = fsl_esdhc_set_ios,
1163 static const struct udevice_id fsl_esdhc_ids[] = {
1164 { .compatible = "fsl,imx6ul-usdhc", },
1165 { .compatible = "fsl,imx6sx-usdhc", },
1166 { .compatible = "fsl,imx6sl-usdhc", },
1167 { .compatible = "fsl,imx6q-usdhc", },
1168 { .compatible = "fsl,imx7d-usdhc", },
1169 { .compatible = "fsl,imx7ulp-usdhc", },
1170 { .compatible = "fsl,esdhc", },
1174 #if CONFIG_IS_ENABLED(BLK)
1175 static int fsl_esdhc_bind(struct udevice *dev)
1177 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1179 return mmc_bind(dev, &plat->mmc, &plat->cfg);
1183 U_BOOT_DRIVER(fsl_esdhc) = {
1184 .name = "fsl-esdhc-mmc",
1186 .of_match = fsl_esdhc_ids,
1187 .ops = &fsl_esdhc_ops,
1188 #if CONFIG_IS_ENABLED(BLK)
1189 .bind = fsl_esdhc_bind,
1191 .probe = fsl_esdhc_probe,
1192 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
1193 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),