1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
4 * Copyright 2019-2020 NXP
7 * Based vaguely on the pxa mmc code:
9 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
21 #include <fsl_esdhc.h>
22 #include <fdt_support.h>
23 #include <asm/cache.h>
26 #include <dm/device_compat.h>
27 #include <linux/bitops.h>
28 #include <linux/delay.h>
29 #include <linux/dma-mapping.h>
32 DECLARE_GLOBAL_DATA_PTR;
35 uint dsaddr; /* SDMA system address register */
36 uint blkattr; /* Block attributes register */
37 uint cmdarg; /* Command argument register */
38 uint xfertyp; /* Transfer type register */
39 uint cmdrsp0; /* Command response 0 register */
40 uint cmdrsp1; /* Command response 1 register */
41 uint cmdrsp2; /* Command response 2 register */
42 uint cmdrsp3; /* Command response 3 register */
43 uint datport; /* Buffer data port register */
44 uint prsstat; /* Present state register */
45 uint proctl; /* Protocol control register */
46 uint sysctl; /* System Control Register */
47 uint irqstat; /* Interrupt status register */
48 uint irqstaten; /* Interrupt status enable register */
49 uint irqsigen; /* Interrupt signal enable register */
50 uint autoc12err; /* Auto CMD error status register */
51 uint hostcapblt; /* Host controller capabilities register */
52 uint wml; /* Watermark level register */
53 char reserved1[8]; /* reserved */
54 uint fevt; /* Force event register */
55 uint admaes; /* ADMA error status register */
56 uint adsaddrl; /* ADMA system address low register */
57 uint adsaddrh; /* ADMA system address high 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[8]; /* reserved */
67 uint tbctl; /* Tuning block control register */
68 char reserved7[32]; /* reserved */
69 uint sdclkctl; /* SD clock control register */
70 uint sdtimingctl; /* SD timing control register */
71 char reserved8[20]; /* reserved */
72 uint dllcfg0; /* DLL config 0 register */
73 char reserved9[680]; /* reserved */
74 uint esdhcctl; /* eSDHC control register */
77 struct fsl_esdhc_plat {
78 struct mmc_config cfg;
83 * struct fsl_esdhc_priv
85 * @esdhc_regs: registers of the sdhc controller
86 * @sdhc_clk: Current clk of the sdhc controller
87 * @bus_width: bus width, 1bit, 4bit or 8bit
90 * Following is used when Driver Model is enabled for MMC
91 * @dev: pointer for the device
92 * @cd_gpio: gpio for card detection
93 * @wp_gpio: gpio for write protection
95 struct fsl_esdhc_priv {
96 struct fsl_esdhc *esdhc_regs;
97 unsigned int sdhc_clk;
100 #if !CONFIG_IS_ENABLED(DM_MMC)
104 struct sdhci_adma_desc *adma_desc_table;
108 /* Return the XFERTYP flags for a given command and data packet */
109 static uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
114 xfertyp |= XFERTYP_DPSEL;
115 if (!IS_ENABLED(CONFIG_SYS_FSL_ESDHC_USE_PIO) &&
116 cmd->cmdidx != MMC_CMD_SEND_TUNING_BLOCK &&
117 cmd->cmdidx != MMC_CMD_SEND_TUNING_BLOCK_HS200)
118 xfertyp |= XFERTYP_DMAEN;
119 if (data->blocks > 1) {
120 xfertyp |= XFERTYP_MSBSEL;
121 xfertyp |= XFERTYP_BCEN;
122 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC111))
123 xfertyp |= XFERTYP_AC12EN;
126 if (data->flags & MMC_DATA_READ)
127 xfertyp |= XFERTYP_DTDSEL;
130 if (cmd->resp_type & MMC_RSP_CRC)
131 xfertyp |= XFERTYP_CCCEN;
132 if (cmd->resp_type & MMC_RSP_OPCODE)
133 xfertyp |= XFERTYP_CICEN;
134 if (cmd->resp_type & MMC_RSP_136)
135 xfertyp |= XFERTYP_RSPTYP_136;
136 else if (cmd->resp_type & MMC_RSP_BUSY)
137 xfertyp |= XFERTYP_RSPTYP_48_BUSY;
138 else if (cmd->resp_type & MMC_RSP_PRESENT)
139 xfertyp |= XFERTYP_RSPTYP_48;
141 if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
142 xfertyp |= XFERTYP_CMDTYP_ABORT;
144 return XFERTYP_CMD(cmd->cmdidx) | xfertyp;
148 * PIO Read/Write Mode reduce the performace as DMA is not used in this mode.
150 static void esdhc_pio_read_write(struct fsl_esdhc_priv *priv,
151 struct mmc_data *data)
153 struct fsl_esdhc *regs = priv->esdhc_regs;
161 if (data->flags & MMC_DATA_READ) {
162 blocks = data->blocks;
165 start = get_timer(0);
166 size = data->blocksize;
167 irqstat = esdhc_read32(®s->irqstat);
168 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BREN)) {
169 if (get_timer(start) > PIO_TIMEOUT) {
170 printf("\nData Read Failed in PIO Mode.");
174 while (size && (!(irqstat & IRQSTAT_TC))) {
175 udelay(100); /* Wait before last byte transfer complete */
176 irqstat = esdhc_read32(®s->irqstat);
177 databuf = in_le32(®s->datport);
178 *((uint *)buffer) = databuf;
185 blocks = data->blocks;
186 buffer = (char *)data->src;
188 start = get_timer(0);
189 size = data->blocksize;
190 irqstat = esdhc_read32(®s->irqstat);
191 while (!(esdhc_read32(®s->prsstat) & PRSSTAT_BWEN)) {
192 if (get_timer(start) > PIO_TIMEOUT) {
193 printf("\nData Write Failed in PIO Mode.");
197 while (size && (!(irqstat & IRQSTAT_TC))) {
198 udelay(100); /* Wait before last byte transfer complete */
199 databuf = *((uint *)buffer);
202 irqstat = esdhc_read32(®s->irqstat);
203 out_le32(®s->datport, databuf);
210 static void esdhc_setup_watermark_level(struct fsl_esdhc_priv *priv,
211 struct mmc_data *data)
213 struct fsl_esdhc *regs = priv->esdhc_regs;
214 uint wml_value = data->blocksize / 4;
216 if (data->flags & MMC_DATA_READ) {
217 if (wml_value > WML_RD_WML_MAX)
218 wml_value = WML_RD_WML_MAX_VAL;
220 esdhc_clrsetbits32(®s->wml, WML_RD_WML_MASK, wml_value);
222 if (wml_value > WML_WR_WML_MAX)
223 wml_value = WML_WR_WML_MAX_VAL;
225 esdhc_clrsetbits32(®s->wml, WML_WR_WML_MASK,
230 static void esdhc_setup_dma(struct fsl_esdhc_priv *priv, struct mmc_data *data)
232 uint trans_bytes = data->blocksize * data->blocks;
233 struct fsl_esdhc *regs = priv->esdhc_regs;
234 phys_addr_t adma_addr;
237 if (data->flags & MMC_DATA_WRITE)
238 buf = (void *)data->src;
242 priv->dma_addr = dma_map_single(buf, trans_bytes,
243 mmc_get_dma_dir(data));
245 if (IS_ENABLED(CONFIG_FSL_ESDHC_SUPPORT_ADMA2) &&
246 priv->adma_desc_table) {
247 debug("Using ADMA2\n");
248 /* prefer ADMA2 if it is available */
249 sdhci_prepare_adma_table(priv->adma_desc_table, data,
252 adma_addr = virt_to_phys(priv->adma_desc_table);
253 esdhc_write32(®s->adsaddrl, lower_32_bits(adma_addr));
254 if (IS_ENABLED(CONFIG_DMA_ADDR_T_64BIT))
255 esdhc_write32(®s->adsaddrh, upper_32_bits(adma_addr));
256 esdhc_clrsetbits32(®s->proctl, PROCTL_DMAS_MASK,
259 debug("Using SDMA\n");
260 if (upper_32_bits(priv->dma_addr))
261 printf("Cannot use 64 bit addresses with SDMA\n");
262 esdhc_write32(®s->dsaddr, lower_32_bits(priv->dma_addr));
263 esdhc_clrsetbits32(®s->proctl, PROCTL_DMAS_MASK,
267 esdhc_write32(®s->blkattr, data->blocks << 16 | data->blocksize);
270 static int esdhc_setup_data(struct fsl_esdhc_priv *priv, struct mmc *mmc,
271 struct mmc_data *data)
274 bool is_write = data->flags & MMC_DATA_WRITE;
275 struct fsl_esdhc *regs = priv->esdhc_regs;
277 if (is_write && !(esdhc_read32(®s->prsstat) & PRSSTAT_WPSPL)) {
278 printf("Can not write to locked SD card.\n");
282 if (IS_ENABLED(CONFIG_SYS_FSL_ESDHC_USE_PIO))
283 esdhc_setup_watermark_level(priv, data);
285 esdhc_setup_dma(priv, data);
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 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC_A001) &&
319 (timeout == 4 || timeout == 8 || timeout == 12))
322 if (IS_ENABLED(ESDHCI_QUIRK_BROKEN_TIMEOUT_VALUE))
325 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, timeout << 16);
331 * Sends a command out on the bus. Takes the mmc pointer,
332 * a command pointer, and an optional data pointer.
334 static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
335 struct mmc_cmd *cmd, struct mmc_data *data)
340 u32 flags = IRQSTAT_CC | IRQSTAT_CTOE;
341 struct fsl_esdhc *regs = priv->esdhc_regs;
344 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC111) &&
345 cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
348 esdhc_write32(®s->irqstat, -1);
352 /* Wait for the bus to be idle */
353 while ((esdhc_read32(®s->prsstat) & PRSSTAT_CICHB) ||
354 (esdhc_read32(®s->prsstat) & PRSSTAT_CIDHB))
357 while (esdhc_read32(®s->prsstat) & PRSSTAT_DLA)
360 /* Wait at least 8 SD clock cycles before the next command */
362 * Note: This is way more than 8 cycles, but 1ms seems to
363 * resolve timing issues with some cards
367 /* Set up for a data transfer if we have one */
369 err = esdhc_setup_data(priv, mmc, data);
374 /* Figure out the transfer arguments */
375 xfertyp = esdhc_xfertyp(cmd, data);
378 esdhc_write32(®s->irqsigen, 0);
380 /* Send the command */
381 esdhc_write32(®s->cmdarg, cmd->cmdarg);
382 esdhc_write32(®s->xfertyp, xfertyp);
384 if (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
385 cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
388 /* Wait for the command to complete */
389 start = get_timer(0);
390 while (!(esdhc_read32(®s->irqstat) & flags)) {
391 if (get_timer(start) > 1000) {
397 irqstat = esdhc_read32(®s->irqstat);
399 if (irqstat & CMD_ERR) {
404 if (irqstat & IRQSTAT_CTOE) {
409 /* Workaround for ESDHC errata ENGcm03648 */
410 if (!data && (cmd->resp_type & MMC_RSP_BUSY)) {
413 /* Poll on DATA0 line for cmd with busy signal for 600 ms */
414 while (timeout > 0 && !(esdhc_read32(®s->prsstat) &
421 printf("Timeout waiting for DAT0 to go high!\n");
427 /* Copy the response to the response buffer */
428 if (cmd->resp_type & MMC_RSP_136) {
429 u32 cmdrsp3, cmdrsp2, cmdrsp1, cmdrsp0;
431 cmdrsp3 = esdhc_read32(®s->cmdrsp3);
432 cmdrsp2 = esdhc_read32(®s->cmdrsp2);
433 cmdrsp1 = esdhc_read32(®s->cmdrsp1);
434 cmdrsp0 = esdhc_read32(®s->cmdrsp0);
435 cmd->response[0] = (cmdrsp3 << 8) | (cmdrsp2 >> 24);
436 cmd->response[1] = (cmdrsp2 << 8) | (cmdrsp1 >> 24);
437 cmd->response[2] = (cmdrsp1 << 8) | (cmdrsp0 >> 24);
438 cmd->response[3] = (cmdrsp0 << 8);
440 cmd->response[0] = esdhc_read32(®s->cmdrsp0);
442 /* Wait until all of the blocks are transferred */
444 if (IS_ENABLED(CONFIG_SYS_FSL_ESDHC_USE_PIO)) {
445 esdhc_pio_read_write(priv, data);
447 flags = DATA_COMPLETE;
448 if (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK ||
449 cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)
453 irqstat = esdhc_read32(®s->irqstat);
455 if (irqstat & IRQSTAT_DTOE) {
460 if (irqstat & DATA_ERR) {
464 } while ((irqstat & flags) != flags);
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 dma_unmap_single(priv->dma_addr,
472 data->blocks * data->blocksize,
473 mmc_get_dma_dir(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)
518 mmc->clock = sdhc_clk / pre_div / div;
519 priv->clock = mmc->clock;
524 clk = (pre_div << 8) | (div << 4);
526 esdhc_clrbits32(®s->sysctl, SYSCTL_CKEN);
528 esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk);
531 value = PRSSTAT_SDSTB;
532 while (!(esdhc_read32(®s->prsstat) & value)) {
534 printf("fsl_esdhc: Internal clock never stabilised.\n");
541 esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN);
544 static void esdhc_clock_control(struct fsl_esdhc_priv *priv, bool enable)
546 struct fsl_esdhc *regs = priv->esdhc_regs;
550 value = esdhc_read32(®s->sysctl);
553 value |= SYSCTL_CKEN;
555 value &= ~SYSCTL_CKEN;
557 esdhc_write32(®s->sysctl, value);
560 value = PRSSTAT_SDSTB;
561 while (!(esdhc_read32(®s->prsstat) & value)) {
563 printf("fsl_esdhc: Internal clock never stabilised.\n");
571 static void esdhc_flush_async_fifo(struct fsl_esdhc_priv *priv)
573 struct fsl_esdhc *regs = priv->esdhc_regs;
576 esdhc_setbits32(®s->esdhcctl, ESDHCCTL_FAF);
579 while (esdhc_read32(®s->esdhcctl) & ESDHCCTL_FAF) {
581 printf("fsl_esdhc: Flush asynchronous FIFO timeout.\n");
589 static void esdhc_tuning_block_enable(struct fsl_esdhc_priv *priv,
592 struct fsl_esdhc *regs = priv->esdhc_regs;
594 esdhc_clock_control(priv, false);
595 esdhc_flush_async_fifo(priv);
597 esdhc_setbits32(®s->tbctl, TBCTL_TB_EN);
599 esdhc_clrbits32(®s->tbctl, TBCTL_TB_EN);
600 esdhc_clock_control(priv, true);
603 static void esdhc_exit_hs400(struct fsl_esdhc_priv *priv)
605 struct fsl_esdhc *regs = priv->esdhc_regs;
607 esdhc_clrbits32(®s->sdtimingctl, FLW_CTL_BG);
608 esdhc_clrbits32(®s->sdclkctl, CMD_CLK_CTL);
610 esdhc_clock_control(priv, false);
611 esdhc_clrbits32(®s->tbctl, HS400_MODE);
612 esdhc_clock_control(priv, true);
614 esdhc_clrbits32(®s->dllcfg0, DLL_FREQ_SEL | DLL_ENABLE);
615 esdhc_clrbits32(®s->tbctl, HS400_WNDW_ADJUST);
617 esdhc_tuning_block_enable(priv, false);
620 static void esdhc_set_timing(struct fsl_esdhc_priv *priv, enum bus_mode mode)
622 struct fsl_esdhc *regs = priv->esdhc_regs;
624 /* Exit HS400 mode before setting any other mode */
625 if (esdhc_read32(®s->tbctl) & HS400_MODE &&
627 esdhc_exit_hs400(priv);
629 esdhc_clock_control(priv, false);
631 if (mode == MMC_HS_200)
632 esdhc_clrsetbits32(®s->autoc12err, UHSM_MASK,
634 if (mode == MMC_HS_400) {
635 esdhc_setbits32(®s->tbctl, HS400_MODE);
636 esdhc_setbits32(®s->sdclkctl, CMD_CLK_CTL);
637 esdhc_clock_control(priv, true);
639 if (priv->clock == 200000000)
640 esdhc_setbits32(®s->dllcfg0, DLL_FREQ_SEL);
642 esdhc_setbits32(®s->dllcfg0, DLL_ENABLE);
643 esdhc_setbits32(®s->tbctl, HS400_WNDW_ADJUST);
645 esdhc_clock_control(priv, false);
646 esdhc_flush_async_fifo(priv);
648 esdhc_clock_control(priv, true);
651 static int esdhc_set_ios_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
653 struct fsl_esdhc *regs = priv->esdhc_regs;
655 if (priv->is_sdhc_per_clk) {
656 /* Select to use peripheral clock */
657 esdhc_clock_control(priv, false);
658 esdhc_setbits32(®s->esdhcctl, ESDHCCTL_PCS);
659 esdhc_clock_control(priv, true);
662 if (mmc->selected_mode == MMC_HS_400)
663 esdhc_tuning_block_enable(priv, true);
665 /* Set the clock speed */
666 if (priv->clock != mmc->clock)
667 set_sysctl(priv, mmc, mmc->clock);
670 esdhc_set_timing(priv, mmc->selected_mode);
672 /* Set the bus width */
673 esdhc_clrbits32(®s->proctl, PROCTL_DTW_4 | PROCTL_DTW_8);
675 if (mmc->bus_width == 4)
676 esdhc_setbits32(®s->proctl, PROCTL_DTW_4);
677 else if (mmc->bus_width == 8)
678 esdhc_setbits32(®s->proctl, PROCTL_DTW_8);
683 static void esdhc_enable_cache_snooping(struct fsl_esdhc *regs)
685 #ifdef CONFIG_ARCH_MPC830X
686 immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
687 sysconf83xx_t *sysconf = &immr->sysconf;
689 setbits_be32(&sysconf->sdhccr, 0x02000000);
691 esdhc_write32(®s->esdhcctl, 0x00000040);
695 static int esdhc_init_common(struct fsl_esdhc_priv *priv, struct mmc *mmc)
697 struct fsl_esdhc *regs = priv->esdhc_regs;
700 /* Reset the entire host controller */
701 esdhc_setbits32(®s->sysctl, SYSCTL_RSTA);
703 /* Wait until the controller is available */
704 start = get_timer(0);
705 while ((esdhc_read32(®s->sysctl) & SYSCTL_RSTA)) {
706 if (get_timer(start) > 1000)
710 /* Clean TBCTL[TB_EN] which is not able to be reset by reset all */
711 esdhc_clrbits32(®s->tbctl, TBCTL_TB_EN);
713 esdhc_enable_cache_snooping(regs);
715 esdhc_setbits32(®s->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
717 /* Set the initial clock speed */
718 mmc_set_clock(mmc, 400000, MMC_CLK_ENABLE);
720 /* Disable the BRR and BWR bits in IRQSTAT */
721 esdhc_clrbits32(®s->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
723 /* Put the PROCTL reg back to the default */
724 esdhc_write32(®s->proctl, PROCTL_INIT);
726 /* Set timout to the maximum value */
727 esdhc_clrsetbits32(®s->sysctl, SYSCTL_TIMEOUT_MASK, 14 << 16);
732 static int esdhc_getcd_common(struct fsl_esdhc_priv *priv)
734 struct fsl_esdhc *regs = priv->esdhc_regs;
736 #ifdef CONFIG_ESDHC_DETECT_QUIRK
737 if (CONFIG_ESDHC_DETECT_QUIRK)
740 if (esdhc_read32(®s->prsstat) & PRSSTAT_CINS)
746 static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,
747 struct mmc_config *cfg)
749 struct fsl_esdhc *regs = priv->esdhc_regs;
752 caps = esdhc_read32(®s->hostcapblt);
753 if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC135))
754 caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
755 if (IS_ENABLED(CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33))
756 caps |= HOSTCAPBLT_VS33;
757 if (caps & HOSTCAPBLT_VS18)
758 cfg->voltages |= MMC_VDD_165_195;
759 if (caps & HOSTCAPBLT_VS30)
760 cfg->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
761 if (caps & HOSTCAPBLT_VS33)
762 cfg->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
764 cfg->name = "FSL_SDHC";
766 if (caps & HOSTCAPBLT_HSS)
767 cfg->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
770 cfg->f_max = min(priv->sdhc_clk, (u32)200000000);
771 cfg->b_max = CONFIG_SYS_MMC_MAX_BLK_COUNT;
774 #ifdef CONFIG_OF_LIBFDT
775 __weak int esdhc_status_fixup(void *blob, const char *compat)
777 if (IS_ENABLED(CONFIG_FSL_ESDHC_PIN_MUX) && !hwconfig("esdhc")) {
778 do_fixup_by_compat(blob, compat, "status", "disabled",
779 sizeof("disabled"), 1);
787 #if CONFIG_IS_ENABLED(DM_MMC)
788 static int fsl_esdhc_get_cd(struct udevice *dev);
789 static void esdhc_disable_for_no_card(void *blob)
793 for (uclass_first_device(UCLASS_MMC, &dev);
795 uclass_next_device(&dev)) {
798 if (fsl_esdhc_get_cd(dev))
801 snprintf(esdhc_path, sizeof(esdhc_path), "/soc/esdhc@%lx",
802 (unsigned long)dev_read_addr(dev));
803 do_fixup_by_path(blob, esdhc_path, "status", "disabled",
804 sizeof("disabled"), 1);
808 static void esdhc_disable_for_no_card(void *blob)
813 void fdt_fixup_esdhc(void *blob, struct bd_info *bd)
815 const char *compat = "fsl,esdhc";
817 if (esdhc_status_fixup(blob, compat))
820 if (IS_ENABLED(CONFIG_FSL_ESDHC_33V_IO_RELIABILITY_WORKAROUND))
821 esdhc_disable_for_no_card(blob);
823 do_fixup_by_compat_u32(blob, compat, "clock-frequency",
824 gd->arch.sdhc_clk, 1);
828 #if !CONFIG_IS_ENABLED(DM_MMC)
829 static int esdhc_getcd(struct mmc *mmc)
831 struct fsl_esdhc_priv *priv = mmc->priv;
833 return esdhc_getcd_common(priv);
836 static int esdhc_init(struct mmc *mmc)
838 struct fsl_esdhc_priv *priv = mmc->priv;
840 return esdhc_init_common(priv, mmc);
843 static int esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
844 struct mmc_data *data)
846 struct fsl_esdhc_priv *priv = mmc->priv;
848 return esdhc_send_cmd_common(priv, mmc, cmd, data);
851 static int esdhc_set_ios(struct mmc *mmc)
853 struct fsl_esdhc_priv *priv = mmc->priv;
855 return esdhc_set_ios_common(priv, mmc);
858 static const struct mmc_ops esdhc_ops = {
859 .getcd = esdhc_getcd,
861 .send_cmd = esdhc_send_cmd,
862 .set_ios = esdhc_set_ios,
865 int fsl_esdhc_initialize(struct bd_info *bis, struct fsl_esdhc_cfg *cfg)
867 struct fsl_esdhc_plat *plat;
868 struct fsl_esdhc_priv *priv;
869 struct mmc_config *mmc_cfg;
875 priv = calloc(sizeof(struct fsl_esdhc_priv), 1);
878 plat = calloc(sizeof(struct fsl_esdhc_plat), 1);
884 priv->esdhc_regs = (struct fsl_esdhc *)(unsigned long)(cfg->esdhc_base);
885 priv->sdhc_clk = cfg->sdhc_clk;
886 if (gd->arch.sdhc_per_clk)
887 priv->is_sdhc_per_clk = true;
889 mmc_cfg = &plat->cfg;
891 if (cfg->max_bus_width == 8) {
892 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
894 } else if (cfg->max_bus_width == 4) {
895 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT;
896 } else if (cfg->max_bus_width == 1) {
897 mmc_cfg->host_caps |= MMC_MODE_1BIT;
899 mmc_cfg->host_caps |= MMC_MODE_1BIT | MMC_MODE_4BIT |
901 printf("No max bus width provided. Assume 8-bit supported.\n");
904 if (IS_ENABLED(CONFIG_ESDHC_DETECT_8_BIT_QUIRK))
905 mmc_cfg->host_caps &= ~MMC_MODE_8BIT;
907 mmc_cfg->ops = &esdhc_ops;
909 fsl_esdhc_get_cfg_common(priv, mmc_cfg);
911 mmc = mmc_create(mmc_cfg, priv);
919 int fsl_esdhc_mmc_init(struct bd_info *bis)
921 struct fsl_esdhc_cfg *cfg;
923 cfg = calloc(sizeof(struct fsl_esdhc_cfg), 1);
924 cfg->esdhc_base = CONFIG_SYS_FSL_ESDHC_ADDR;
925 /* Prefer peripheral clock which provides higher frequency. */
926 if (gd->arch.sdhc_per_clk)
927 cfg->sdhc_clk = gd->arch.sdhc_per_clk;
929 cfg->sdhc_clk = gd->arch.sdhc_clk;
930 return fsl_esdhc_initialize(bis, cfg);
933 static int fsl_esdhc_probe(struct udevice *dev)
935 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
936 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
937 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
943 addr = dev_read_addr(dev);
944 if (addr == FDT_ADDR_T_NONE)
947 priv->esdhc_regs = (struct fsl_esdhc *)lower_32_bits(addr);
949 priv->esdhc_regs = (struct fsl_esdhc *)addr;
953 if (IS_ENABLED(CONFIG_FSL_ESDHC_SUPPORT_ADMA2)) {
955 * Only newer eSDHC controllers can do ADMA2 if the ADMA flag
956 * is set in the host capabilities register.
958 caps = esdhc_read32(&priv->esdhc_regs->hostcapblt);
959 hostver = esdhc_read32(&priv->esdhc_regs->hostver);
960 if (caps & HOSTCAPBLT_DMAS &&
961 HOSTVER_VENDOR(hostver) > VENDOR_V_22) {
962 priv->adma_desc_table = sdhci_adma_init();
963 if (!priv->adma_desc_table)
964 debug("Could not allocate ADMA tables, falling back to SDMA\n");
968 if (gd->arch.sdhc_per_clk) {
969 priv->sdhc_clk = gd->arch.sdhc_per_clk;
970 priv->is_sdhc_per_clk = true;
972 priv->sdhc_clk = gd->arch.sdhc_clk;
975 if (priv->sdhc_clk <= 0) {
976 dev_err(dev, "Unable to get clk for %s\n", dev->name);
980 fsl_esdhc_get_cfg_common(priv, &plat->cfg);
982 mmc_of_parse(dev, &plat->cfg);
985 mmc->cfg = &plat->cfg;
990 ret = esdhc_init_common(priv, mmc);
994 if (IS_ENABLED(CONFIG_FSL_ESDHC_33V_IO_RELIABILITY_WORKAROUND) &&
995 !fsl_esdhc_get_cd(dev))
996 esdhc_setbits32(&priv->esdhc_regs->proctl, PROCTL_VOLT_SEL);
1001 static int fsl_esdhc_get_cd(struct udevice *dev)
1003 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1004 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1006 if (plat->cfg.host_caps & MMC_CAP_NONREMOVABLE)
1009 return esdhc_getcd_common(priv);
1012 static int fsl_esdhc_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
1013 struct mmc_data *data)
1015 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1016 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1018 return esdhc_send_cmd_common(priv, &plat->mmc, cmd, data);
1021 static int fsl_esdhc_set_ios(struct udevice *dev)
1023 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1024 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1026 return esdhc_set_ios_common(priv, &plat->mmc);
1029 static int fsl_esdhc_reinit(struct udevice *dev)
1031 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1032 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1034 return esdhc_init_common(priv, &plat->mmc);
1037 #ifdef MMC_SUPPORTS_TUNING
1038 static int fsl_esdhc_execute_tuning(struct udevice *dev, uint32_t opcode)
1040 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1041 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1042 struct fsl_esdhc *regs = priv->esdhc_regs;
1046 esdhc_tuning_block_enable(priv, true);
1047 esdhc_setbits32(®s->autoc12err, EXECUTE_TUNING);
1049 irqstaten = esdhc_read32(®s->irqstaten);
1050 esdhc_write32(®s->irqstaten, IRQSTATEN_BRR);
1052 for (i = 0; i < MAX_TUNING_LOOP; i++) {
1053 mmc_send_tuning(&plat->mmc, opcode, NULL);
1056 val = esdhc_read32(®s->autoc12err);
1057 if (!(val & EXECUTE_TUNING)) {
1058 if (val & SMPCLKSEL)
1063 esdhc_write32(®s->irqstaten, irqstaten);
1065 if (i != MAX_TUNING_LOOP) {
1066 if (plat->mmc.hs400_tuning)
1067 esdhc_setbits32(®s->sdtimingctl, FLW_CTL_BG);
1071 printf("fsl_esdhc: tuning failed!\n");
1072 esdhc_clrbits32(®s->autoc12err, SMPCLKSEL);
1073 esdhc_clrbits32(®s->autoc12err, EXECUTE_TUNING);
1074 esdhc_tuning_block_enable(priv, false);
1079 int fsl_esdhc_hs400_prepare_ddr(struct udevice *dev)
1081 struct fsl_esdhc_priv *priv = dev_get_priv(dev);
1083 esdhc_tuning_block_enable(priv, false);
1087 static const struct dm_mmc_ops fsl_esdhc_ops = {
1088 .get_cd = fsl_esdhc_get_cd,
1089 .send_cmd = fsl_esdhc_send_cmd,
1090 .set_ios = fsl_esdhc_set_ios,
1091 #ifdef MMC_SUPPORTS_TUNING
1092 .execute_tuning = fsl_esdhc_execute_tuning,
1094 .reinit = fsl_esdhc_reinit,
1095 .hs400_prepare_ddr = fsl_esdhc_hs400_prepare_ddr,
1098 static const struct udevice_id fsl_esdhc_ids[] = {
1099 { .compatible = "fsl,esdhc", },
1103 static int fsl_esdhc_bind(struct udevice *dev)
1105 struct fsl_esdhc_plat *plat = dev_get_platdata(dev);
1107 return mmc_bind(dev, &plat->mmc, &plat->cfg);
1110 U_BOOT_DRIVER(fsl_esdhc) = {
1111 .name = "fsl-esdhc-mmc",
1113 .of_match = fsl_esdhc_ids,
1114 .ops = &fsl_esdhc_ops,
1115 .bind = fsl_esdhc_bind,
1116 .probe = fsl_esdhc_probe,
1117 .platdata_auto_alloc_size = sizeof(struct fsl_esdhc_plat),
1118 .priv_auto_alloc_size = sizeof(struct fsl_esdhc_priv),