1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
4 * Copyright 2019, 2021 NXP
6 * Yangbo Lu <yangbo.lu@nxp.com>
8 * Based vaguely on the pxa mmc code:
10 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
22 #include <asm/cache.h>
23 #include <asm/global_data.h>
24 #include <dm/device_compat.h>
25 #include <linux/bitops.h>
26 #include <linux/delay.h>
27 #include <linux/err.h>
28 #include <linux/printk.h>
29 #include <power/regulator.h>
31 #include <fsl_esdhc_imx.h>
32 #include <fdt_support.h>
35 #include <asm-generic/gpio.h>
36 #include <dm/pinctrl.h>
37 #include <dt-structs.h>
39 #include <dm/ofnode.h>
40 #include <linux/iopoll.h>
41 #include <linux/dma-mapping.h>
43 #ifndef ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE
44 #ifdef CONFIG_FSL_USDHC
45 #define ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE 1
49 DECLARE_GLOBAL_DATA_PTR;
51 #define SDHCI_IRQ_EN_BITS (IRQSTATEN_CC | IRQSTATEN_TC | \
53 IRQSTATEN_CTOE | IRQSTATEN_CCE | IRQSTATEN_CEBE | \
54 IRQSTATEN_CIE | IRQSTATEN_DTOE | IRQSTATEN_DCE | \
55 IRQSTATEN_DEBE | IRQSTATEN_BRR | IRQSTATEN_BWR | \
57 #define MAX_TUNING_LOOP 40
60 uint dsaddr; /* SDMA system address register */
61 uint blkattr; /* Block attributes register */
62 uint cmdarg; /* Command argument register */
63 uint xfertyp; /* Transfer type register */
64 uint cmdrsp0; /* Command response 0 register */
65 uint cmdrsp1; /* Command response 1 register */
66 uint cmdrsp2; /* Command response 2 register */
67 uint cmdrsp3; /* Command response 3 register */
68 uint datport; /* Buffer data port register */
69 uint prsstat; /* Present state register */
70 uint proctl; /* Protocol control register */
71 uint sysctl; /* System Control Register */
72 uint irqstat; /* Interrupt status register */
73 uint irqstaten; /* Interrupt status enable register */
74 uint irqsigen; /* Interrupt signal enable register */
75 uint autoc12err; /* Auto CMD error status register */
76 uint hostcapblt; /* Host controller capabilities register */
77 uint wml; /* Watermark level register */
78 uint mixctrl; /* For USDHC */
79 char reserved1[4]; /* reserved */
80 uint fevt; /* Force event register */
81 uint admaes; /* ADMA error status register */
82 uint adsaddr; /* ADMA system address register */
86 uint clktunectrlstatus;
94 uint tuning_ctrl; /* on i.MX6/7/8/RT */
96 uint hostver; /* Host controller version register */
97 char reserved6[4]; /* reserved */
98 uint dmaerraddr; /* DMA error address register */
99 char reserved7[4]; /* reserved */
100 uint dmaerrattr; /* DMA error attribute register */
101 char reserved8[4]; /* reserved */
102 uint hostcapblt2; /* Host controller capabilities register 2 */
103 char reserved9[8]; /* reserved */
104 uint tcr; /* Tuning control register */
105 char reserved10[28]; /* reserved */
106 uint sddirctl; /* SD direction control register */
107 char reserved11[712];/* reserved */
108 uint scr; /* eSDHC control register */
111 struct fsl_esdhc_plat {
112 #if CONFIG_IS_ENABLED(OF_PLATDATA)
113 /* Put this first since driver model will copy the data here */
114 struct dtd_fsl_esdhc dtplat;
117 struct mmc_config cfg;
121 struct esdhc_soc_data {
126 * struct fsl_esdhc_priv
128 * @esdhc_regs: registers of the sdhc controller
129 * @sdhc_clk: Current clk of the sdhc controller
132 * Following is used when Driver Model is enabled for MMC
133 * @dev: pointer for the device
134 * @broken_cd: 0: use GPIO for card detect; 1: Do not use GPIO for card detect
135 * @wp_enable: 1: enable checking wp; 0: no check
136 * @vs18_enable: 1: use 1.8V voltage; 0: use 3.3V
137 * @flags: ESDHC_FLAG_xx in include/fsl_esdhc_imx.h
138 * @caps: controller capabilities
139 * @tuning_step: tuning step setting in tuning_ctrl register
140 * @start_tuning_tap: the start point for tuning in tuning_ctrl register
141 * @strobe_dll_delay_target: settings in strobe_dllctrl
142 * @signal_voltage: indicating the current voltage
143 * @signal_voltage_switch_extra_delay_ms: extra delay for IO voltage switch
144 * @cd_gpio: gpio for card detection
145 * @wp_gpio: gpio for write protection
147 struct fsl_esdhc_priv {
148 struct fsl_esdhc *esdhc_regs;
149 unsigned int sdhc_clk;
153 #if !CONFIG_IS_ENABLED(DM_MMC)
163 u32 tuning_start_tap;
164 u32 strobe_dll_delay_target;
166 u32 signal_voltage_switch_extra_delay_ms;
167 struct udevice *vqmmc_dev;
168 struct udevice *vmmc_dev;
169 #if CONFIG_IS_ENABLED(DM_GPIO)
170 struct gpio_desc cd_gpio;
171 struct gpio_desc wp_gpio;
176 /* Return the XFERTYP flags for a given command and data packet */
177 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
182 xfertyp |= XFERTYP_DPSEL;
183 if (!IS_ENABLED(CONFIG_SYS_FSL_ESDHC_USE_PIO) &&
184 cmd->cmdidx != MMC_CMD_SEND_TUNING_BLOCK &&
185 cmd->cmdidx != MMC_CMD_SEND_TUNING_BLOCK_HS200)
186 xfertyp |= XFERTYP_DMAEN;
187 if (data->blocks > 1) {
188 xfertyp |= XFERTYP_MSBSEL;
189 xfertyp |= XFERTYP_BCEN;
190 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC111))
191 xfertyp |= XFERTYP_AC12EN;
194 if (data->flags & MMC_DATA_READ)
195 xfertyp |= XFERTYP_DTDSEL;
198 if (cmd->resp_type & MMC_RSP_CRC)
199 xfertyp |= XFERTYP_CCCEN;
200 if (cmd->resp_type & MMC_RSP_OPCODE)
201 xfertyp |= XFERTYP_CICEN;
202 if (cmd->resp_type & MMC_RSP_136)
203 xfertyp |= XFERTYP_RSPTYP_136;
204 else if (cmd->resp_type & MMC_RSP_BUSY)
205 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
206 else if (cmd->resp_type & MMC_RSP_PRESENT)
207 xfertyp |= XFERTYP_RSPTYP_48;
209 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
210 xfertyp |= XFERTYP_CMDTYP_ABORT;
212 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
216 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
218 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
219 struct mmc_data *data)
221 struct fsl_esdhc *regs = priv->esdhc_regs;
229 if (data->flags & MMC_DATA_READ) {
230 blocks = data->blocks;
233 start = get_timer(0);
234 size = data->blocksize;
235 irqstat = esdhc_read32(®s->irqstat);
236 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
237 if (get_timer(start) > PIO_TIMEOUT) {
238 printf("\nData Read Failed in PIO Mode.");
242 while (size && (!(irqstat & IRQSTAT_TC))) {
243 udelay(100); /* Wait before last byte transfer complete */
244 irqstat = esdhc_read32(®s->irqstat);
245 databuf = in_le32(®s->datport);
246 *((uint *)buffer) = databuf;
253 blocks = data->blocks;
254 buffer = (char *)data->src;
256 start = get_timer(0);
257 size = data->blocksize;
258 irqstat = esdhc_read32(®s->irqstat);
259 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
260 if (get_timer(start) > PIO_TIMEOUT) {
261 printf("\nData Write Failed in PIO Mode.");
265 while (size && (!(irqstat & IRQSTAT_TC))) {
266 udelay(100); /* Wait before last byte transfer complete */
267 databuf = *((uint *)buffer);
270 irqstat = esdhc_read32(®s->irqstat);
271 out_le32(®s->datport, databuf);
278 static void esdhc_setup_watermark_level(struct fsl_esdhc_priv *priv,
279 struct mmc_data *data)
281 struct fsl_esdhc *regs = priv->esdhc_regs;
282 uint wml_value = data->blocksize / 4;
284 if (data->flags & MMC_DATA_READ) {
285 if (wml_value > WML_RD_WML_MAX)
286 wml_value = WML_RD_WML_MAX_VAL;
288 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
290 if (wml_value > WML_WR_WML_MAX)
291 wml_value = WML_WR_WML_MAX_VAL;
293 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
298 static void esdhc_setup_dma(struct fsl_esdhc_priv *priv, struct mmc_data *data)
300 uint trans_bytes = data->blocksize * data->blocks;
301 struct fsl_esdhc *regs = priv->esdhc_regs;
304 if (data->flags & MMC_DATA_WRITE)
305 buf = (void *)data->src;
309 priv->dma_addr = dma_map_single(buf, trans_bytes,
310 mmc_get_dma_dir(data));
311 if (upper_32_bits(priv->dma_addr))
312 printf("Cannot use 64 bit addresses with SDMA\n");
313 esdhc_write32(®s->dsaddr, lower_32_bits(priv->dma_addr));
314 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
317 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
318 struct mmc_data *data)
321 bool is_write = data->flags & MMC_DATA_WRITE;
322 struct fsl_esdhc *regs = priv->esdhc_regs;
325 if (priv->wp_enable && !(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) {
326 printf("Cannot write to locked SD card.\n");
329 #if CONFIG_IS_ENABLED(DM_GPIO)
330 if (dm_gpio_is_valid(&priv->wp_gpio) &&
331 dm_gpio_get_value(&priv->wp_gpio)) {
332 printf("Cannot write to locked SD card.\n");
339 esdhc_setup_watermark_level(priv, data);
340 if (!IS_ENABLED(CONFIG_SYS_FSL_ESDHC_USE_PIO))
341 esdhc_setup_dma(priv, data);
343 /* Calculate the timeout period for data transactions */
345 * 1)Timeout period = (2^(timeout+13)) SD Clock cycles
346 * 2)Timeout period should be minimum 0.250sec as per SD Card spec
347 * So, Number of SD Clock cycles for 0.25sec should be minimum
348 * (SD Clock/sec * 0.25 sec) SD Clock cycles
349 * = (mmc->clock * 1/4) SD Clock cycles
351 * => (2^(timeout+13)) >= mmc->clock * 1/4
352 * Taking log2 both the sides
353 * => timeout + 13 >= log2(mmc->clock/4)
354 * Rounding up to next power of 2
355 * => timeout + 13 = log2(mmc->clock/4) + 1
356 * => timeout + 13 = fls(mmc->clock/4)
358 * However, the MMC spec "It is strongly recommended for hosts to
359 * implement more than 500ms timeout value even if the card
360 * indicates the 250ms maximum busy length." Even the previous
361 * value of 300ms is known to be insufficient for some cards.
363 * => timeout + 13 = fls(mmc->clock/2)
365 timeout = fls(mmc->clock/2);
374 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC_A001) &&
375 (timeout == 4 || timeout == 8 || timeout == 12))
378 if (IS_ENABLED(ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE))
381 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
386 #if IS_ENABLED(CONFIG_MCF5441x)
388 * Swaps 32-bit words to little-endian byte order.
390 static inline void sd_swap_dma_buff(struct mmc_data *data)
392 int i, size = data->blocksize >> 2;
393 u32 *buffer = (u32 *)data->dest;
396 while (data->blocks--) {
397 for (i = 0; i < size; i++) {
398 sw = __sw32(*buffer);
404 static inline void sd_swap_dma_buff(struct mmc_data *data)
411 * Sends a command out on the bus. Takes the mmc pointer,
412 * a command pointer, and an optional data pointer.
414 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
415 struct mmc_cmd *cmd, struct mmc_data *data)
420 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
421 struct fsl_esdhc *regs = priv->esdhc_regs;
424 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC111) &&
425 cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
428 esdhc_write32(®s->irqstat, -1);
432 /* Wait for the bus to be idle */
433 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
434 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
437 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
440 /* Set up for a data transfer if we have one */
442 err = esdhc_setup_data(priv, mmc, data);
447 /* Figure out the transfer arguments */
448 xfertyp = esdhc_xfertyp(cmd, data);
451 esdhc_write32(®s->irqsigen, 0);
453 /* Send the command */
454 esdhc_write32(®s->cmdarg, cmd->cmdarg);
455 if (IS_ENABLED(CONFIG_FSL_USDHC)) {
456 u32 mixctrl = esdhc_read32(®s->mixctrl);
458 esdhc_write32(®s->mixctrl,
459 (mixctrl & 0xFFFFFF80) | (xfertyp & 0x7F)
460 | (mmc->ddr_mode ? XFERTYP_DDREN : 0));
461 esdhc_write32(®s->xfertyp, xfertyp & 0xFFFF0000);
463 esdhc_write32(®s->xfertyp, xfertyp);
466 if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) ||
467 (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200))
470 /* Wait for the command to complete */
471 start = get_timer(0);
472 while (!(esdhc_read32(®s->irqstat) & flags)) {
473 if (get_timer(start) > 1000) {
479 irqstat = esdhc_read32(®s->irqstat);
481 if (irqstat & CMD_ERR) {
486 if (irqstat & IRQSTAT_CTOE) {
491 /* Workaround for ESDHC errata ENGcm03648 */
492 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
495 /* Poll on DATA0 line for cmd with busy signal for 5000 ms */
496 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
503 printf("Timeout waiting for DAT0 to go high!\n");
509 /* Copy the response to the response buffer */
510 if (cmd->resp_type & MMC_RSP_136) {
511 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
513 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
514 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
515 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
516 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
517 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
518 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
519 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
520 cmd->response[3] = (cmdrsp0 << 8);
522 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
524 /* Wait until all of the blocks are transferred */
526 if (IS_ENABLED(CONFIG_SYS_FSL_ESDHC_USE_PIO)) {
527 esdhc_pio_read_write(priv, data);
529 flags = DATA_COMPLETE;
530 if (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
531 cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
535 irqstat = esdhc_read32(®s->irqstat);
537 if (irqstat & IRQSTAT_DTOE) {
542 if (irqstat & DATA_ERR) {
546 } while ((irqstat & flags) != flags);
549 * Need invalidate the dcache here again to avoid any
550 * cache-fill during the DMA operations such as the
551 * speculative pre-fetching etc.
553 dma_unmap_single(priv->dma_addr,
554 data->blocks * data->blocksize,
555 mmc_get_dma_dir(data));
556 if (IS_ENABLED(CONFIG_MCF5441x) &&
557 (data->flags & MMC_DATA_READ))
558 sd_swap_dma_buff(data);
563 /* Reset CMD and DATA portions on error */
565 esdhc_write32(®s->sysctl, esdhc_read32(®s->sysctl) |
567 while (esdhc_read32(®s->sysctl) & SYSCTL_RSTC)
571 esdhc_write32(®s->sysctl,
572 esdhc_read32(®s->sysctl) |
574 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTD))
578 /* If this was CMD11, then notify that power cycle is needed */
579 if (cmd->cmdidx == SD_CMD_SWITCH_UHS18V)
580 printf("CMD11 to switch to 1.8V mode failed, card requires power cycle.\n");
583 esdhc_write32(®s->irqstat, -1);
588 static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock)
590 struct fsl_esdhc *regs = priv->esdhc_regs;
594 int ddr_pre_div = mmc->ddr_mode ? 2 : 1;
595 int sdhc_clk = priv->sdhc_clk;
598 #if IS_ENABLED(CONFIG_MX53)
599 /* For i.MX53 eSDHCv3, SYSCTL.SDCLKFS may not be set to 0. */
600 pre_div = (regs == (struct fsl_esdhc *)MMC_SDHC3_BASE_ADDR) ? 2 : 1;
605 while (sdhc_clk / (16 * pre_div * ddr_pre_div) > clock && pre_div < 256)
608 while (sdhc_clk / (div * pre_div * ddr_pre_div) > clock && div < 16)
611 mmc->clock = sdhc_clk / pre_div / div / ddr_pre_div;
616 clk = (pre_div << 8) | (div << 4);
618 if (IS_ENABLED(CONFIG_FSL_USDHC))
619 esdhc_clrbits32(®s->vendorspec, VENDORSPEC_CKEN);
621 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
623 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
625 ret = readx_poll_timeout(esdhc_read32, ®s->prsstat, tmp, tmp & PRSSTAT_SDSTB, 100);
627 pr_warn("fsl_esdhc_imx: Internal clock never stabilised.\n");
629 if (IS_ENABLED(CONFIG_FSL_USDHC))
630 esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN | VENDORSPEC_CKEN);
632 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
637 #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING)
638 static int esdhc_change_pinstate(struct udevice *dev)
640 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
643 switch (priv->mode) {
646 ret = pinctrl_select_state(dev, "state_100mhz");
652 ret = pinctrl_select_state(dev, "state_200mhz");
655 ret = pinctrl_select_state(dev, "default");
660 printf("%s %d error\n", __func__, priv->mode);
665 static void esdhc_reset_tuning(struct mmc *mmc)
667 struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
668 struct fsl_esdhc *regs = priv->esdhc_regs;
670 if (priv->flags & ESDHC_FLAG_USDHC) {
671 if (priv->flags & ESDHC_FLAG_STD_TUNING) {
672 esdhc_clrbits32(®s->autoc12err,
673 MIX_CTRL_SMPCLK_SEL |
679 static void esdhc_set_strobe_dll(struct mmc *mmc)
681 struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
682 struct fsl_esdhc *regs = priv->esdhc_regs;
685 if (priv->clock > ESDHC_STROBE_DLL_CLK_FREQ) {
686 esdhc_write32(®s->strobe_dllctrl, ESDHC_STROBE_DLL_CTRL_RESET);
687 /* clear the reset bit on strobe dll before any setting */
688 esdhc_write32(®s->strobe_dllctrl, 0);
691 * enable strobe dll ctrl and adjust the delay target
692 * for the uSDHC loopback read clock
694 val = ESDHC_STROBE_DLL_CTRL_ENABLE |
695 ESDHC_STROBE_DLL_CTRL_SLV_UPDATE_INT_DEFAULT |
696 (priv->strobe_dll_delay_target <<
697 ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_SHIFT);
698 esdhc_write32(®s->strobe_dllctrl, val);
699 /* wait 5us to make sure strobe dll status register stable */
701 val = esdhc_read32(®s->strobe_dllstat);
702 if (!(val & ESDHC_STROBE_DLL_STS_REF_LOCK))
703 pr_warn("HS400 strobe DLL status REF not lock!\n");
704 if (!(val & ESDHC_STROBE_DLL_STS_SLV_LOCK))
705 pr_warn("HS400 strobe DLL status SLV not lock!\n");
709 static int esdhc_set_timing(struct mmc *mmc)
711 struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
712 struct fsl_esdhc *regs = priv->esdhc_regs;
715 mixctrl = esdhc_read32(®s->mixctrl);
716 mixctrl &= ~(MIX_CTRL_DDREN | MIX_CTRL_HS400_EN);
718 switch (mmc->selected_mode) {
720 esdhc_reset_tuning(mmc);
721 esdhc_write32(®s->mixctrl, mixctrl);
725 mixctrl |= MIX_CTRL_DDREN | MIX_CTRL_HS400_EN;
726 esdhc_write32(®s->mixctrl, mixctrl);
736 esdhc_write32(®s->mixctrl, mixctrl);
740 mixctrl |= MIX_CTRL_DDREN;
741 esdhc_write32(®s->mixctrl, mixctrl);
744 printf("Not supported %d\n", mmc->selected_mode);
748 priv->mode = mmc->selected_mode;
750 return esdhc_change_pinstate(mmc->dev);
753 static int esdhc_set_voltage(struct mmc *mmc)
755 struct fsl_esdhc_priv *priv = dev_get_priv(mmc->dev);
756 struct fsl_esdhc *regs = priv->esdhc_regs;
759 priv->signal_voltage = mmc->signal_voltage;
760 switch (mmc->signal_voltage) {
761 case MMC_SIGNAL_VOLTAGE_330:
762 if (priv->vs18_enable)
764 if (CONFIG_IS_ENABLED(DM_REGULATOR) &&
765 !IS_ERR_OR_NULL(priv->vqmmc_dev)) {
766 ret = regulator_set_value(priv->vqmmc_dev,
769 printf("Setting to 3.3V error: %d\n", ret);
775 esdhc_clrbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT);
776 if (!(esdhc_read32(®s->vendorspec) &
777 ESDHC_VENDORSPEC_VSELECT))
781 case MMC_SIGNAL_VOLTAGE_180:
782 if (CONFIG_IS_ENABLED(DM_REGULATOR) &&
783 !IS_ERR_OR_NULL(priv->vqmmc_dev)) {
784 ret = regulator_set_value(priv->vqmmc_dev,
787 printf("Setting to 1.8V error: %d\n", ret);
791 esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT);
793 * some board like imx8mm-evk need about 18ms to switch
794 * the IO voltage from 3.3v to 1.8v, common code only
795 * delay 10ms, so need to delay extra time to make sure
796 * the IO voltage change to 1.8v.
798 if (priv->signal_voltage_switch_extra_delay_ms)
799 mdelay(priv->signal_voltage_switch_extra_delay_ms);
800 if (esdhc_read32(®s->vendorspec) & ESDHC_VENDORSPEC_VSELECT)
804 case MMC_SIGNAL_VOLTAGE_120:
811 static void esdhc_stop_tuning(struct mmc *mmc)
815 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
817 cmd.resp_type = MMC_RSP_R1b;
819 mmc_send_cmd(mmc, &cmd, NULL);
822 static int fsl_esdhc_execute_tuning(struct udevice *dev, uint32_t opcode)
824 struct fsl_esdhc_plat *plat = dev_get_plat(dev);
825 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
826 struct fsl_esdhc *regs = priv->esdhc_regs;
827 struct mmc *mmc = &plat->mmc;
828 u32 irqstaten = esdhc_read32(®s->irqstaten);
829 u32 irqsigen = esdhc_read32(®s->irqsigen);
830 int i, err, ret = -ETIMEDOUT;
831 u32 val, mixctrl, tmp;
833 /* clock tuning is not needed for upto 52MHz */
834 if (mmc->clock <= 52000000)
837 /* make sure the card clock keep on */
838 esdhc_setbits32(®s->vendorspec, VENDORSPEC_FRC_SDCLK_ON);
840 /* This is readw/writew SDHCI_HOST_CONTROL2 when tuning */
841 if (priv->flags & ESDHC_FLAG_STD_TUNING) {
842 val = esdhc_read32(®s->autoc12err);
843 mixctrl = esdhc_read32(®s->mixctrl);
844 val &= ~MIX_CTRL_SMPCLK_SEL;
845 mixctrl &= ~(MIX_CTRL_FBCLK_SEL | MIX_CTRL_AUTO_TUNE_EN);
847 val |= MIX_CTRL_EXE_TUNE;
848 mixctrl |= MIX_CTRL_FBCLK_SEL | MIX_CTRL_AUTO_TUNE_EN;
850 esdhc_write32(®s->autoc12err, val);
851 esdhc_write32(®s->mixctrl, mixctrl);
854 /* sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE); */
855 mixctrl = esdhc_read32(®s->mixctrl);
856 mixctrl = MIX_CTRL_DTDSEL_READ | (mixctrl & ~MIX_CTRL_SDHCI_MASK);
857 esdhc_write32(®s->mixctrl, mixctrl);
859 esdhc_write32(®s->irqstaten, IRQSTATEN_BRR);
860 esdhc_write32(®s->irqsigen, IRQSTATEN_BRR);
863 * Issue opcode repeatedly till Execute Tuning is set to 0 or the number
864 * of loops reaches 40 times.
866 for (i = 0; i < MAX_TUNING_LOOP; i++) {
869 if (opcode == MMC_CMD_SEND_TUNING_BLOCK_HS200) {
870 if (mmc->bus_width == 8)
871 esdhc_write32(®s->blkattr, 0x7080);
872 else if (mmc->bus_width == 4)
873 esdhc_write32(®s->blkattr, 0x7040);
875 esdhc_write32(®s->blkattr, 0x7040);
878 /* sdhci_writew(host, SDHCI_TRNS_READ, SDHCI_TRANSFER_MODE) */
879 val = esdhc_read32(®s->mixctrl);
880 val = MIX_CTRL_DTDSEL_READ | (val & ~MIX_CTRL_SDHCI_MASK);
881 esdhc_write32(®s->mixctrl, val);
883 /* We are using STD tuning, no need to check return value */
884 mmc_send_tuning(mmc, opcode);
886 ctrl = esdhc_read32(®s->autoc12err);
887 if ((!(ctrl & MIX_CTRL_EXE_TUNE)) &&
888 (ctrl & MIX_CTRL_SMPCLK_SEL)) {
894 esdhc_write32(®s->irqstaten, irqstaten);
895 esdhc_write32(®s->irqsigen, irqsigen);
897 esdhc_stop_tuning(mmc);
899 /* change to default setting, let host control the card clock */
900 esdhc_clrbits32(®s->vendorspec, VENDORSPEC_FRC_SDCLK_ON);
901 err = readx_poll_timeout(esdhc_read32, ®s->prsstat, tmp, tmp & PRSSTAT_SDOFF, 100);
903 dev_warn(dev, "card clock not gate off as expect.\n");
909 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
911 struct fsl_esdhc *regs = priv->esdhc_regs;
912 int ret __maybe_unused;
915 #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING)
917 * call esdhc_set_timing() before update the clock rate,
918 * This is because current we support DDR and SDR mode,
919 * Once the DDR_EN bit is set, the card clock will be
920 * divide by 2 automatically. So need to do this before
921 * setting clock rate.
923 if (priv->mode != mmc->selected_mode) {
924 ret = esdhc_set_timing(mmc);
926 printf("esdhc_set_timing error %d\n", ret);
932 /* Set the clock speed */
934 if (clock < mmc->cfg->f_min)
935 clock = mmc->cfg->f_min;
937 if (priv->clock != clock)
938 set_sysctl(priv, mmc, clock);
940 if (mmc->clk_disable) {
941 if (IS_ENABLED(CONFIG_FSL_USDHC))
942 esdhc_clrbits32(®s->vendorspec, VENDORSPEC_CKEN);
944 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
946 if (IS_ENABLED(CONFIG_FSL_USDHC))
947 esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN |
950 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
953 #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING)
955 * For HS400/HS400ES mode, make sure set the strobe dll in the
956 * target clock rate. So call esdhc_set_strobe_dll() after the
959 if (mmc->selected_mode == MMC_HS_400 || mmc->selected_mode == MMC_HS_400_ES)
960 esdhc_set_strobe_dll(mmc);
962 if (priv->signal_voltage != mmc->signal_voltage) {
963 ret = esdhc_set_voltage(mmc);
965 if (ret != -ENOTSUPP)
966 printf("esdhc_set_voltage error %d\n", ret);
972 /* Set the bus width */
973 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
975 if (mmc->bus_width == 4)
976 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
977 else if (mmc->bus_width == 8)
978 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
983 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
985 struct fsl_esdhc *regs = priv->esdhc_regs;
988 /* Reset the entire host controller */
989 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
991 /* Wait until the controller is available */
992 start = get_timer(0);
993 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
994 if (get_timer(start) > 1000)
998 if (IS_ENABLED(CONFIG_FSL_USDHC)) {
999 /* RSTA doesn't reset MMC_BOOT register, so manually reset it */
1000 esdhc_write32(®s->mmcboot, 0x0);
1001 /* Reset MIX_CTRL and CLK_TUNE_CTRL_STATUS regs to 0 */
1002 esdhc_write32(®s->mixctrl, 0x0);
1003 esdhc_write32(®s->clktunectrlstatus, 0x0);
1005 /* Put VEND_SPEC to default value */
1006 if (priv->vs18_enable)
1007 esdhc_write32(®s->vendorspec, VENDORSPEC_INIT |
1008 ESDHC_VENDORSPEC_VSELECT);
1010 esdhc_write32(®s->vendorspec, VENDORSPEC_INIT);
1012 /* Disable DLL_CTRL delay line */
1013 esdhc_write32(®s->dllctrl, 0x0);
1016 if (IS_ENABLED(CONFIG_FSL_USDHC))
1017 esdhc_setbits32(®s->vendorspec,
1018 VENDORSPEC_HCKEN | VENDORSPEC_IPGEN);
1020 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
1022 /* Set the initial clock speed */
1023 set_sysctl(priv, mmc, 400000);
1025 /* Disable the BRR and BWR bits in IRQSTAT */
1026 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
1028 /* Put the PROCTL reg back to the default */
1029 if (IS_ENABLED(CONFIG_MCF5441x))
1030 esdhc_write32(®s->proctl, PROCTL_INIT | PROCTL_D3CD);
1032 esdhc_write32(®s->proctl, PROCTL_INIT);
1034 /* Set timout to the maximum value */
1035 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
1040 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
1042 struct fsl_esdhc *regs = priv->esdhc_regs;
1045 if (IS_ENABLED(CONFIG_ESDHC_DETECT_QUIRK))
1048 if (CONFIG_IS_ENABLED(DM_MMC)) {
1049 if (priv->broken_cd)
1051 #if CONFIG_IS_ENABLED(DM_GPIO)
1052 if (dm_gpio_is_valid(&priv->cd_gpio))
1053 return dm_gpio_get_value(&priv->cd_gpio);
1057 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_CINS) && --timeout)
1063 static int esdhc_wait_dat0_common(struct fsl_esdhc_priv *priv, int state,
1066 struct fsl_esdhc *regs = priv->esdhc_regs;
1070 /* make sure the card clock keep on */
1071 esdhc_setbits32(®s->vendorspec, VENDORSPEC_FRC_SDCLK_ON);
1073 ret = readx_poll_timeout(esdhc_read32, ®s->prsstat, tmp,
1074 !!(tmp & PRSSTAT_DAT0) == !!state,
1077 /* change to default setting, let host control the card clock */
1078 esdhc_clrbits32(®s->vendorspec, VENDORSPEC_FRC_SDCLK_ON);
1080 err = readx_poll_timeout(esdhc_read32, ®s->prsstat, tmp, tmp & PRSSTAT_SDOFF, 100);
1082 pr_warn("card clock not gate off as expect.\n");
1087 static int esdhc_reset(struct fsl_esdhc *regs)
1091 /* reset the controller */
1092 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
1094 /* hardware clears the bit when it is done */
1095 start = get_timer(0);
1096 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
1097 if (get_timer(start) > 100) {
1098 printf("MMC/SD: Reset never completed.\n");
1106 #if !CONFIG_IS_ENABLED(DM_MMC)
1107 static int esdhc_getcd(struct mmc *mmc)
1109 struct fsl_esdhc_priv *priv = mmc->priv;
1111 return esdhc_getcd_common(priv);
1114 static int esdhc_init(struct mmc *mmc)
1116 struct fsl_esdhc_priv *priv = mmc->priv;
1118 return esdhc_init_common(priv, mmc);
1121 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
1122 struct mmc_data *data)
1124 struct fsl_esdhc_priv *priv = mmc->priv;
1126 return esdhc_send_cmd_common(priv, mmc, cmd, data);
1129 static int esdhc_set_ios(struct mmc *mmc)
1131 struct fsl_esdhc_priv *priv = mmc->priv;
1133 return esdhc_set_ios_common(priv, mmc);
1136 static int esdhc_wait_dat0(struct mmc *mmc, int state, int timeout_us)
1138 struct fsl_esdhc_priv *priv = mmc->priv;
1140 return esdhc_wait_dat0_common(priv, state, timeout_us);
1143 static const struct mmc_ops esdhc_ops = {
1144 .getcd = esdhc_getcd,
1146 .send_cmd = esdhc_send_cmd,
1147 .set_ios = esdhc_set_ios,
1148 .wait_dat0 = esdhc_wait_dat0,
1152 static int fsl_esdhc_init(struct fsl_esdhc_priv *priv,
1153 struct fsl_esdhc_plat *plat)
1155 struct mmc_config *cfg;
1156 struct fsl_esdhc *regs;
1163 regs = priv->esdhc_regs;
1165 /* First reset the eSDHC controller */
1166 ret = esdhc_reset(regs);
1170 /* ColdFire, using SDHC_DATA[3] for card detection */
1171 if (IS_ENABLED(CONFIG_MCF5441x))
1172 esdhc_write32(®s->proctl, PROCTL_INIT | PROCTL_D3CD);
1174 if (IS_ENABLED(CONFIG_FSL_USDHC)) {
1175 esdhc_setbits32(®s->vendorspec, VENDORSPEC_PEREN |
1176 VENDORSPEC_HCKEN | VENDORSPEC_IPGEN | VENDORSPEC_CKEN);
1178 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_HCKEN
1179 | SYSCTL_IPGEN | SYSCTL_CKEN);
1180 /* Clearing tuning bits in case ROM has set it already */
1181 esdhc_write32(®s->mixctrl, 0);
1182 esdhc_write32(®s->autoc12err, 0);
1183 esdhc_write32(®s->clktunectrlstatus, 0);
1186 if (priv->vs18_enable)
1187 esdhc_setbits32(®s->vendorspec, ESDHC_VENDORSPEC_VSELECT);
1189 esdhc_write32(®s->irqstaten, SDHCI_IRQ_EN_BITS);
1191 if (!CONFIG_IS_ENABLED(DM_MMC))
1192 memset(cfg, '\0', sizeof(*cfg));
1194 caps = esdhc_read32(®s->hostcapblt);
1197 * MCF5441x RM declares in more points that sdhc clock speed must
1198 * never exceed 25 Mhz. From this, the HS bit needs to be disabled
1199 * from host capabilities.
1201 if (IS_ENABLED(CONFIG_MCF5441x))
1202 caps &= ~HOSTCAPBLT_HSS;
1204 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC135))
1205 caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
1207 if (IS_ENABLED(CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33))
1208 caps |= HOSTCAPBLT_VS33;
1210 if (caps & HOSTCAPBLT_VS18)
1211 cfg->voltages |= MMC_VDD_165_195;
1212 if (caps & HOSTCAPBLT_VS30)
1213 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
1214 if (caps & HOSTCAPBLT_VS33)
1215 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
1217 cfg->name = "FSL_SDHC";
1219 #if !CONFIG_IS_ENABLED(DM_MMC)
1220 cfg->ops = &esdhc_ops;
1223 if (IS_ENABLED(CONFIG_SYS_FSL_ESDHC_HAS_DDR_MODE))
1224 cfg->host_caps |= MMC_MODE_DDR_52MHz;
1226 if (caps & HOSTCAPBLT_HSS)
1227 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
1229 cfg->host_caps |= priv->caps;
1231 cfg->f_min = 400000;
1232 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
1234 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
1236 esdhc_write32(®s->dllctrl, 0);
1237 if (priv->flags & ESDHC_FLAG_USDHC) {
1238 if (priv->flags & ESDHC_FLAG_STD_TUNING) {
1239 u32 val = esdhc_read32(®s->tuning_ctrl);
1241 val |= ESDHC_STD_TUNING_EN;
1242 val &= ~ESDHC_TUNING_START_TAP_MASK;
1243 val |= priv->tuning_start_tap;
1244 val &= ~ESDHC_TUNING_STEP_MASK;
1245 val |= (priv->tuning_step) << ESDHC_TUNING_STEP_SHIFT;
1247 /* Disable the CMD CRC check for tuning, if not, need to
1248 * add some delay after every tuning command, because
1249 * hardware standard tuning logic will directly go to next
1250 * step once it detect the CMD CRC error, will not wait for
1251 * the card side to finally send out the tuning data, trigger
1252 * the buffer read ready interrupt immediately. If usdhc send
1253 * the next tuning command some eMMC card will stuck, can't
1254 * response, block the tuning procedure or the first command
1255 * after the whole tuning procedure always can't get any response.
1257 val |= ESDHC_TUNING_CMD_CRC_CHECK_DISABLE;
1258 esdhc_write32(®s->tuning_ctrl, val);
1262 * UHS doesn't have explicit ESDHC flags, so if it's
1263 * not supported, disable it in config.
1265 if (CONFIG_IS_ENABLED(MMC_UHS_SUPPORT))
1266 cfg->host_caps |= UHS_CAPS;
1268 if (CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)) {
1269 if (priv->flags & ESDHC_FLAG_HS200)
1270 cfg->host_caps |= MMC_CAP(MMC_HS_200);
1273 if (CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)) {
1274 if (priv->flags & ESDHC_FLAG_HS400)
1275 cfg->host_caps |= MMC_CAP(MMC_HS_400);
1278 if (CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)) {
1279 if (priv->flags & ESDHC_FLAG_HS400_ES)
1280 cfg->host_caps |= MMC_CAP(MMC_HS_400_ES);
1286 #if !CONFIG_IS_ENABLED(DM_MMC)
1287 int fsl_esdhc_initialize(struct bd_info *bis, struct fsl_esdhc_cfg *cfg)
1289 struct fsl_esdhc_plat *plat;
1290 struct fsl_esdhc_priv *priv;
1291 struct mmc_config *mmc_cfg;
1298 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
1301 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
1307 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
1308 priv->sdhc_clk = cfg->sdhc_clk;
1309 priv->wp_enable = cfg->wp_enable;
1311 mmc_cfg = &plat->cfg;
1313 switch (cfg->max_bus_width) {
1314 case 0: /* Not set in config; assume everything is supported */
1316 mmc_cfg->host_caps |= MMC_MODE_8BIT;
1319 mmc_cfg->host_caps |= MMC_MODE_4BIT;
1322 mmc_cfg->host_caps |= MMC_MODE_1BIT;
1325 printf("invalid max bus width %u\n", cfg->max_bus_width);
1329 if (IS_ENABLED(CONFIG_ESDHC_DETECT_8_BIT_QUIRK))
1330 mmc_cfg->host_caps &= ~MMC_MODE_8BIT;
1332 ret = fsl_esdhc_init(priv, plat);
1334 debug("%s init failure\n", __func__);
1340 mmc = mmc_create(&plat->cfg, priv);
1349 int fsl_esdhc_mmc_init(struct bd_info *bis)
1351 struct fsl_esdhc_cfg *cfg;
1353 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
1354 cfg->esdhc_base = CFG_SYS_FSL_ESDHC_ADDR;
1355 cfg->sdhc_clk = gd->arch.sdhc_clk;
1356 return fsl_esdhc_initialize(bis, cfg);
1360 #if CONFIG_IS_ENABLED(OF_LIBFDT)
1361 __weak int esdhc_status_fixup(void *blob, const char *compat)
1363 if (IS_ENABLED(CONFIG_FSL_ESDHC_PIN_MUX) && !hwconfig("esdhc")) {
1364 do_fixup_by_compat(blob, compat, "status", "disabled",
1365 sizeof("disabled"), 1);
1371 void fdt_fixup_esdhc(void *blob, struct bd_info *bd)
1373 const char *compat = "fsl,esdhc";
1375 if (esdhc_status_fixup(blob, compat))
1378 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
1379 gd->arch.sdhc_clk, 1);
1383 #if CONFIG_IS_ENABLED(DM_MMC)
1384 #include <asm/arch/clock.h>
1385 __weak void init_clk_usdhc(u32 index)
1389 static int fsl_esdhc_of_to_plat(struct udevice *dev)
1391 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1392 struct udevice *vqmmc_dev;
1395 const void *fdt = gd->fdt_blob;
1396 int node = dev_of_offset(dev);
1400 if (!CONFIG_IS_ENABLED(OF_REAL))
1403 addr = dev_read_addr(dev);
1404 if (addr == FDT_ADDR_T_NONE)
1406 priv->esdhc_regs = (struct fsl_esdhc *)addr;
1410 val = fdtdec_get_int(fdt, node, "fsl,tuning-step", 1);
1411 priv->tuning_step = val;
1412 val = fdtdec_get_int(fdt, node, "fsl,tuning-start-tap",
1413 ESDHC_TUNING_START_TAP_DEFAULT);
1414 priv->tuning_start_tap = val;
1415 val = fdtdec_get_int(fdt, node, "fsl,strobe-dll-delay-target",
1416 ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_DEFAULT);
1417 priv->strobe_dll_delay_target = val;
1418 val = fdtdec_get_int(fdt, node, "fsl,signal-voltage-switch-extra-delay-ms", 0);
1419 priv->signal_voltage_switch_extra_delay_ms = val;
1421 if (dev_read_bool(dev, "broken-cd"))
1422 priv->broken_cd = 1;
1424 if (dev_read_prop(dev, "fsl,wp-controller", NULL)) {
1425 priv->wp_enable = 1;
1427 priv->wp_enable = 0;
1430 #if CONFIG_IS_ENABLED(DM_GPIO)
1431 gpio_request_by_name(dev, "cd-gpios", 0, &priv->cd_gpio,
1433 gpio_request_by_name(dev, "wp-gpios", 0, &priv->wp_gpio,
1437 priv->vs18_enable = 0;
1439 if (!CONFIG_IS_ENABLED(DM_REGULATOR))
1443 * If emmc I/O has a fixed voltage at 1.8V, this must be provided,
1444 * otherwise, emmc will work abnormally.
1446 ret = device_get_supply_regulator(dev, "vqmmc-supply", &vqmmc_dev);
1448 dev_dbg(dev, "no vqmmc-supply\n");
1450 priv->vqmmc_dev = vqmmc_dev;
1451 ret = regulator_set_enable(vqmmc_dev, true);
1453 dev_err(dev, "fail to enable vqmmc-supply\n");
1457 if (regulator_get_value(vqmmc_dev) == 1800000)
1458 priv->vs18_enable = 1;
1463 static int fsl_esdhc_probe(struct udevice *dev)
1465 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
1466 struct fsl_esdhc_plat *plat = dev_get_plat(dev);
1467 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1468 struct esdhc_soc_data *data =
1469 (struct esdhc_soc_data *)dev_get_driver_data(dev);
1473 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1474 struct dtd_fsl_esdhc *dtplat = &plat->dtplat;
1476 priv->esdhc_regs = map_sysmem(dtplat->reg[0], dtplat->reg[1]);
1478 if (dtplat->non_removable)
1479 plat->cfg.host_caps |= MMC_CAP_NONREMOVABLE;
1481 plat->cfg.host_caps &= ~MMC_CAP_NONREMOVABLE;
1483 if (CONFIG_IS_ENABLED(DM_GPIO) && !dtplat->non_removable) {
1484 struct udevice *gpiodev;
1486 ret = device_get_by_ofplat_idx(dtplat->cd_gpios->idx, &gpiodev);
1490 ret = gpio_dev_request_index(gpiodev, gpiodev->name, "cd-gpios",
1491 dtplat->cd_gpios->arg[0], GPIOD_IS_IN,
1492 dtplat->cd_gpios->arg[1], &priv->cd_gpio);
1500 priv->flags = data->flags;
1504 * Because lack of clk driver, if SDHC clk is not enabled,
1505 * need to enable it first before this driver is invoked.
1507 * we use MXC_ESDHC_CLK to get clk freq.
1508 * If one would like to make this function work,
1509 * the aliases should be provided in dts as this:
1517 * Then if your board only supports mmc2 and mmc3, but we can
1518 * correctly get the seq as 2 and 3, then let mxc_get_clock
1522 #if CONFIG_IS_ENABLED(CLK)
1523 /* Assigned clock already set clock */
1524 ret = clk_get_by_name(dev, "per", &priv->per_clk);
1526 printf("Failed to get per_clk\n");
1529 ret = clk_enable(&priv->per_clk);
1531 printf("Failed to enable per_clk\n");
1535 priv->sdhc_clk = clk_get_rate(&priv->per_clk);
1537 init_clk_usdhc(dev_seq(dev));
1539 priv->sdhc_clk = mxc_get_clock(MXC_ESDHC_CLK + dev_seq(dev));
1540 if (priv->sdhc_clk <= 0) {
1541 dev_err(dev, "Unable to get clk for %s\n", dev->name);
1546 ret = fsl_esdhc_init(priv, plat);
1548 dev_err(dev, "fsl_esdhc_init failure\n");
1552 if (CONFIG_IS_ENABLED(OF_REAL)) {
1553 ret = mmc_of_parse(dev, &plat->cfg);
1559 mmc->cfg = &plat->cfg;
1564 return esdhc_init_common(priv, mmc);
1567 static int fsl_esdhc_get_cd(struct udevice *dev)
1569 struct fsl_esdhc_plat *plat = dev_get_plat(dev);
1570 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1572 if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE)
1575 return esdhc_getcd_common(priv);
1578 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
1579 struct mmc_data *data)
1581 struct fsl_esdhc_plat *plat = dev_get_plat(dev);
1582 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1584 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
1587 static int fsl_esdhc_set_ios(struct udevice *dev)
1589 struct fsl_esdhc_plat *plat = dev_get_plat(dev);
1590 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1592 return esdhc_set_ios_common(priv, &plat->mmc);
1595 static int __maybe_unused fsl_esdhc_set_enhanced_strobe(struct udevice *dev)
1597 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1598 struct fsl_esdhc *regs = priv->esdhc_regs;
1601 m = esdhc_read32(®s->mixctrl);
1602 m |= MIX_CTRL_HS400_ES;
1603 esdhc_write32(®s->mixctrl, m);
1608 static int fsl_esdhc_wait_dat0(struct udevice *dev, int state,
1611 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1613 return esdhc_wait_dat0_common(priv, state, timeout_us);
1616 static const struct dm_mmc_ops fsl_esdhc_ops = {
1617 .get_cd = fsl_esdhc_get_cd,
1618 .send_cmd = fsl_esdhc_send_cmd,
1619 .set_ios = fsl_esdhc_set_ios,
1620 #if CONFIG_IS_ENABLED(MMC_SUPPORTS_TUNING)
1621 .execute_tuning = fsl_esdhc_execute_tuning,
1623 #if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
1624 .set_enhanced_strobe = fsl_esdhc_set_enhanced_strobe,
1626 .wait_dat0 = fsl_esdhc_wait_dat0,
1629 static struct esdhc_soc_data usdhc_imx7d_data = {
1630 .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
1631 | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
1635 static struct esdhc_soc_data usdhc_imx7ulp_data = {
1636 .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING
1637 | ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200
1641 static struct esdhc_soc_data usdhc_imx8qm_data = {
1642 .flags = ESDHC_FLAG_USDHC | ESDHC_FLAG_STD_TUNING |
1643 ESDHC_FLAG_HAVE_CAP1 | ESDHC_FLAG_HS200 |
1644 ESDHC_FLAG_HS400 | ESDHC_FLAG_HS400_ES,
1647 static const struct udevice_id fsl_esdhc_ids[] = {
1648 { .compatible = "fsl,imx51-esdhc", },
1649 { .compatible = "fsl,imx53-esdhc", },
1650 { .compatible = "fsl,imx6ul-usdhc", },
1651 { .compatible = "fsl,imx6sx-usdhc", },
1652 { .compatible = "fsl,imx6sl-usdhc", },
1653 { .compatible = "fsl,imx6q-usdhc", },
1654 { .compatible = "fsl,imx7d-usdhc", .data = (ulong)&usdhc_imx7d_data,},
1655 { .compatible = "fsl,imx7ulp-usdhc", .data = (ulong)&usdhc_imx7ulp_data,},
1656 { .compatible = "fsl,imx8qm-usdhc", .data = (ulong)&usdhc_imx8qm_data,},
1657 { .compatible = "fsl,imx8mm-usdhc", .data = (ulong)&usdhc_imx8qm_data,},
1658 { .compatible = "fsl,imx8mn-usdhc", .data = (ulong)&usdhc_imx8qm_data,},
1659 { .compatible = "fsl,imx8mp-usdhc", .data = (ulong)&usdhc_imx8qm_data,},
1660 { .compatible = "fsl,imx8mq-usdhc", .data = (ulong)&usdhc_imx8qm_data,},
1661 { .compatible = "fsl,imxrt-usdhc", },
1662 { .compatible = "fsl,esdhc", },
1666 static int fsl_esdhc_bind(struct udevice *dev)
1668 struct fsl_esdhc_plat *plat = dev_get_plat(dev);
1670 return mmc_bind(dev, &plat->mmc, &plat->cfg);
1673 U_BOOT_DRIVER(fsl_esdhc) = {
1674 .name = "fsl_esdhc",
1676 .of_match = fsl_esdhc_ids,
1677 .of_to_plat = fsl_esdhc_of_to_plat,
1678 .ops = &fsl_esdhc_ops,
1679 .bind = fsl_esdhc_bind,
1680 .probe = fsl_esdhc_probe,
1681 .plat_auto = sizeof(struct fsl_esdhc_plat),
1682 .priv_auto = sizeof(struct fsl_esdhc_priv),
1685 DM_DRIVER_ALIAS(fsl_esdhc, fsl_imx6q_usdhc)