1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (C) 2016 Socionext Inc.
4 * Author: Masahiro Yamada <yamada.masahiro@socionext.com>
12 #include <dm/pinctrl.h>
13 #include <linux/compat.h>
14 #include <linux/dma-direction.h>
16 #include <linux/sizes.h>
17 #include <power/regulator.h>
18 #include <asm/unaligned.h>
20 #include "tmio-common.h"
22 DECLARE_GLOBAL_DATA_PTR;
24 static u64 tmio_sd_readq(struct tmio_sd_priv *priv, unsigned int reg)
26 return readq(priv->regbase + (reg << 1));
29 static void tmio_sd_writeq(struct tmio_sd_priv *priv,
30 u64 val, unsigned int reg)
32 writeq(val, priv->regbase + (reg << 1));
35 static u16 tmio_sd_readw(struct tmio_sd_priv *priv, unsigned int reg)
37 return readw(priv->regbase + (reg >> 1));
40 static void tmio_sd_writew(struct tmio_sd_priv *priv,
41 u16 val, unsigned int reg)
43 writew(val, priv->regbase + (reg >> 1));
46 u32 tmio_sd_readl(struct tmio_sd_priv *priv, unsigned int reg)
50 if (priv->caps & TMIO_SD_CAP_64BIT)
51 return readl(priv->regbase + (reg << 1));
52 else if (priv->caps & TMIO_SD_CAP_16BIT) {
53 val = readw(priv->regbase + (reg >> 1)) & 0xffff;
54 if ((reg == TMIO_SD_RSP10) || (reg == TMIO_SD_RSP32) ||
55 (reg == TMIO_SD_RSP54) || (reg == TMIO_SD_RSP76)) {
56 val |= readw(priv->regbase + (reg >> 1) + 2) << 16;
60 return readl(priv->regbase + reg);
63 void tmio_sd_writel(struct tmio_sd_priv *priv,
64 u32 val, unsigned int reg)
66 if (priv->caps & TMIO_SD_CAP_64BIT)
67 writel(val, priv->regbase + (reg << 1));
68 else if (priv->caps & TMIO_SD_CAP_16BIT) {
69 writew(val & 0xffff, priv->regbase + (reg >> 1));
70 if (reg == TMIO_SD_INFO1 || reg == TMIO_SD_INFO1_MASK ||
71 reg == TMIO_SD_INFO2 || reg == TMIO_SD_INFO2_MASK ||
73 writew(val >> 16, priv->regbase + (reg >> 1) + 2);
75 writel(val, priv->regbase + reg);
78 static dma_addr_t __dma_map_single(void *ptr, size_t size,
79 enum dma_data_direction dir)
81 unsigned long addr = (unsigned long)ptr;
83 if (dir == DMA_FROM_DEVICE)
84 invalidate_dcache_range(addr, addr + size);
86 flush_dcache_range(addr, addr + size);
91 static void __dma_unmap_single(dma_addr_t addr, size_t size,
92 enum dma_data_direction dir)
94 if (dir != DMA_TO_DEVICE)
95 invalidate_dcache_range(addr, addr + size);
98 static int tmio_sd_check_error(struct udevice *dev, struct mmc_cmd *cmd)
100 struct tmio_sd_priv *priv = dev_get_priv(dev);
101 u32 info2 = tmio_sd_readl(priv, TMIO_SD_INFO2);
103 if (info2 & TMIO_SD_INFO2_ERR_RTO) {
105 * TIMEOUT must be returned for unsupported command. Do not
106 * display error log since this might be a part of sequence to
107 * distinguish between SD and MMC.
112 if (info2 & TMIO_SD_INFO2_ERR_TO) {
113 dev_err(dev, "timeout error\n");
117 if (info2 & (TMIO_SD_INFO2_ERR_END | TMIO_SD_INFO2_ERR_CRC |
118 TMIO_SD_INFO2_ERR_IDX)) {
119 if ((cmd->cmdidx != MMC_CMD_SEND_TUNING_BLOCK) &&
120 (cmd->cmdidx != MMC_CMD_SEND_TUNING_BLOCK_HS200))
121 dev_err(dev, "communication out of sync\n");
125 if (info2 & (TMIO_SD_INFO2_ERR_ILA | TMIO_SD_INFO2_ERR_ILR |
126 TMIO_SD_INFO2_ERR_ILW)) {
127 dev_err(dev, "illegal access\n");
134 static int tmio_sd_wait_for_irq(struct udevice *dev, struct mmc_cmd *cmd,
135 unsigned int reg, u32 flag)
137 struct tmio_sd_priv *priv = dev_get_priv(dev);
141 while (!(tmio_sd_readl(priv, reg) & flag)) {
143 dev_err(dev, "timeout\n");
147 ret = tmio_sd_check_error(dev, cmd);
157 #define tmio_pio_read_fifo(__width, __suffix) \
158 static void tmio_pio_read_fifo_##__width(struct tmio_sd_priv *priv, \
159 char *pbuf, uint blksz) \
161 u##__width *buf = (u##__width *)pbuf; \
164 if (likely(IS_ALIGNED((uintptr_t)buf, ((__width) / 8)))) { \
165 for (i = 0; i < blksz / ((__width) / 8); i++) { \
166 *buf++ = tmio_sd_read##__suffix(priv, \
170 for (i = 0; i < blksz / ((__width) / 8); i++) { \
172 data = tmio_sd_read##__suffix(priv, \
174 put_unaligned(data, buf++); \
179 tmio_pio_read_fifo(64, q)
180 tmio_pio_read_fifo(32, l)
181 tmio_pio_read_fifo(16, w)
183 static int tmio_sd_pio_read_one_block(struct udevice *dev, struct mmc_cmd *cmd,
184 char *pbuf, uint blocksize)
186 struct tmio_sd_priv *priv = dev_get_priv(dev);
189 /* wait until the buffer is filled with data */
190 ret = tmio_sd_wait_for_irq(dev, cmd, TMIO_SD_INFO2,
196 * Clear the status flag _before_ read the buffer out because
197 * TMIO_SD_INFO2_BRE is edge-triggered, not level-triggered.
199 tmio_sd_writel(priv, 0, TMIO_SD_INFO2);
201 if (priv->caps & TMIO_SD_CAP_64BIT)
202 tmio_pio_read_fifo_64(priv, pbuf, blocksize);
203 else if (priv->caps & TMIO_SD_CAP_16BIT)
204 tmio_pio_read_fifo_16(priv, pbuf, blocksize);
206 tmio_pio_read_fifo_32(priv, pbuf, blocksize);
211 #define tmio_pio_write_fifo(__width, __suffix) \
212 static void tmio_pio_write_fifo_##__width(struct tmio_sd_priv *priv, \
213 const char *pbuf, uint blksz)\
215 const u##__width *buf = (const u##__width *)pbuf; \
218 if (likely(IS_ALIGNED((uintptr_t)buf, ((__width) / 8)))) { \
219 for (i = 0; i < blksz / ((__width) / 8); i++) { \
220 tmio_sd_write##__suffix(priv, *buf++, \
224 for (i = 0; i < blksz / ((__width) / 8); i++) { \
225 u##__width data = get_unaligned(buf++); \
226 tmio_sd_write##__suffix(priv, data, \
232 tmio_pio_write_fifo(64, q)
233 tmio_pio_write_fifo(32, l)
234 tmio_pio_write_fifo(16, w)
236 static int tmio_sd_pio_write_one_block(struct udevice *dev, struct mmc_cmd *cmd,
237 const char *pbuf, uint blocksize)
239 struct tmio_sd_priv *priv = dev_get_priv(dev);
242 /* wait until the buffer becomes empty */
243 ret = tmio_sd_wait_for_irq(dev, cmd, TMIO_SD_INFO2,
248 tmio_sd_writel(priv, 0, TMIO_SD_INFO2);
250 if (priv->caps & TMIO_SD_CAP_64BIT)
251 tmio_pio_write_fifo_64(priv, pbuf, blocksize);
252 else if (priv->caps & TMIO_SD_CAP_16BIT)
253 tmio_pio_write_fifo_16(priv, pbuf, blocksize);
255 tmio_pio_write_fifo_32(priv, pbuf, blocksize);
260 static int tmio_sd_pio_xfer(struct udevice *dev, struct mmc_cmd *cmd,
261 struct mmc_data *data)
263 const char *src = data->src;
264 char *dest = data->dest;
267 for (i = 0; i < data->blocks; i++) {
268 if (data->flags & MMC_DATA_READ)
269 ret = tmio_sd_pio_read_one_block(dev, cmd, dest,
272 ret = tmio_sd_pio_write_one_block(dev, cmd, src,
277 if (data->flags & MMC_DATA_READ)
278 dest += data->blocksize;
280 src += data->blocksize;
286 static void tmio_sd_dma_start(struct tmio_sd_priv *priv,
291 tmio_sd_writel(priv, 0, TMIO_SD_DMA_INFO1);
292 tmio_sd_writel(priv, 0, TMIO_SD_DMA_INFO2);
295 tmp = tmio_sd_readl(priv, TMIO_SD_EXTMODE);
296 tmp |= TMIO_SD_EXTMODE_DMA_EN;
297 tmio_sd_writel(priv, tmp, TMIO_SD_EXTMODE);
299 tmio_sd_writel(priv, dma_addr & U32_MAX, TMIO_SD_DMA_ADDR_L);
301 /* suppress the warning "right shift count >= width of type" */
302 dma_addr >>= min_t(int, 32, 8 * sizeof(dma_addr));
304 tmio_sd_writel(priv, dma_addr & U32_MAX, TMIO_SD_DMA_ADDR_H);
306 tmio_sd_writel(priv, TMIO_SD_DMA_CTL_START, TMIO_SD_DMA_CTL);
309 static int tmio_sd_dma_wait_for_irq(struct udevice *dev, u32 flag,
312 struct tmio_sd_priv *priv = dev_get_priv(dev);
313 long wait = 1000000 + 10 * blocks;
315 while (!(tmio_sd_readl(priv, TMIO_SD_DMA_INFO1) & flag)) {
317 dev_err(dev, "timeout during DMA\n");
324 if (tmio_sd_readl(priv, TMIO_SD_DMA_INFO2)) {
325 dev_err(dev, "error during DMA\n");
332 static int tmio_sd_dma_xfer(struct udevice *dev, struct mmc_data *data)
334 struct tmio_sd_priv *priv = dev_get_priv(dev);
335 size_t len = data->blocks * data->blocksize;
337 enum dma_data_direction dir;
342 tmp = tmio_sd_readl(priv, TMIO_SD_DMA_MODE);
344 if (data->flags & MMC_DATA_READ) {
346 dir = DMA_FROM_DEVICE;
348 * The DMA READ completion flag position differs on Socionext
349 * and Renesas SoCs. It is bit 20 on Socionext SoCs and using
350 * bit 17 is a hardware bug and forbidden. It is bit 17 on
351 * Renesas SoCs and bit 20 does not work on them.
353 poll_flag = (priv->caps & TMIO_SD_CAP_RCAR) ?
354 TMIO_SD_DMA_INFO1_END_RD :
355 TMIO_SD_DMA_INFO1_END_RD2;
356 tmp |= TMIO_SD_DMA_MODE_DIR_RD;
358 buf = (void *)data->src;
360 poll_flag = TMIO_SD_DMA_INFO1_END_WR;
361 tmp &= ~TMIO_SD_DMA_MODE_DIR_RD;
364 tmio_sd_writel(priv, tmp, TMIO_SD_DMA_MODE);
366 dma_addr = __dma_map_single(buf, len, dir);
368 tmio_sd_dma_start(priv, dma_addr);
370 ret = tmio_sd_dma_wait_for_irq(dev, poll_flag, data->blocks);
372 __dma_unmap_single(dma_addr, len, dir);
377 /* check if the address is DMA'able */
378 static bool tmio_sd_addr_is_dmaable(const char *src)
380 uintptr_t addr = (uintptr_t)src;
382 if (!IS_ALIGNED(addr, TMIO_SD_DMA_MINALIGN))
385 #if defined(CONFIG_RCAR_GEN3)
386 /* Gen3 DMA has 32bit limit */
391 #if defined(CONFIG_ARCH_UNIPHIER) && !defined(CONFIG_ARM64) && \
392 defined(CONFIG_SPL_BUILD)
394 * For UniPhier ARMv7 SoCs, the stack is allocated in the locked ways
395 * of L2, which is unreachable from the DMA engine.
397 if (addr < CONFIG_SPL_STACK)
404 int tmio_sd_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
405 struct mmc_data *data)
407 struct tmio_sd_priv *priv = dev_get_priv(dev);
411 if (tmio_sd_readl(priv, TMIO_SD_INFO2) & TMIO_SD_INFO2_CBSY) {
412 dev_err(dev, "command busy\n");
416 /* clear all status flags */
417 tmio_sd_writel(priv, 0, TMIO_SD_INFO1);
418 tmio_sd_writel(priv, 0, TMIO_SD_INFO2);
420 /* disable DMA once */
421 tmp = tmio_sd_readl(priv, TMIO_SD_EXTMODE);
422 tmp &= ~TMIO_SD_EXTMODE_DMA_EN;
423 tmio_sd_writel(priv, tmp, TMIO_SD_EXTMODE);
425 tmio_sd_writel(priv, cmd->cmdarg, TMIO_SD_ARG);
430 tmio_sd_writel(priv, data->blocksize, TMIO_SD_SIZE);
431 tmio_sd_writel(priv, data->blocks, TMIO_SD_SECCNT);
433 /* Do not send CMD12 automatically */
434 tmp |= TMIO_SD_CMD_NOSTOP | TMIO_SD_CMD_DATA;
436 if (data->blocks > 1)
437 tmp |= TMIO_SD_CMD_MULTI;
439 if (data->flags & MMC_DATA_READ)
440 tmp |= TMIO_SD_CMD_RD;
444 * Do not use the response type auto-detection on this hardware.
445 * CMD8, for example, has different response types on SD and eMMC,
446 * while this controller always assumes the response type for SD.
447 * Set the response type manually.
449 switch (cmd->resp_type) {
451 tmp |= TMIO_SD_CMD_RSP_NONE;
454 tmp |= TMIO_SD_CMD_RSP_R1;
457 tmp |= TMIO_SD_CMD_RSP_R1B;
460 tmp |= TMIO_SD_CMD_RSP_R2;
463 tmp |= TMIO_SD_CMD_RSP_R3;
466 dev_err(dev, "unknown response type\n");
470 dev_dbg(dev, "sending CMD%d (SD_CMD=%08x, SD_ARG=%08x)\n",
471 cmd->cmdidx, tmp, cmd->cmdarg);
472 tmio_sd_writel(priv, tmp, TMIO_SD_CMD);
474 ret = tmio_sd_wait_for_irq(dev, cmd, TMIO_SD_INFO1,
479 if (cmd->resp_type & MMC_RSP_136) {
480 u32 rsp_127_104 = tmio_sd_readl(priv, TMIO_SD_RSP76);
481 u32 rsp_103_72 = tmio_sd_readl(priv, TMIO_SD_RSP54);
482 u32 rsp_71_40 = tmio_sd_readl(priv, TMIO_SD_RSP32);
483 u32 rsp_39_8 = tmio_sd_readl(priv, TMIO_SD_RSP10);
485 cmd->response[0] = ((rsp_127_104 & 0x00ffffff) << 8) |
486 ((rsp_103_72 & 0xff000000) >> 24);
487 cmd->response[1] = ((rsp_103_72 & 0x00ffffff) << 8) |
488 ((rsp_71_40 & 0xff000000) >> 24);
489 cmd->response[2] = ((rsp_71_40 & 0x00ffffff) << 8) |
490 ((rsp_39_8 & 0xff000000) >> 24);
491 cmd->response[3] = (rsp_39_8 & 0xffffff) << 8;
494 cmd->response[0] = tmio_sd_readl(priv, TMIO_SD_RSP10);
498 /* use DMA if the HW supports it and the buffer is aligned */
499 if (priv->caps & TMIO_SD_CAP_DMA_INTERNAL &&
500 tmio_sd_addr_is_dmaable(data->src))
501 ret = tmio_sd_dma_xfer(dev, data);
503 ret = tmio_sd_pio_xfer(dev, cmd, data);
507 ret = tmio_sd_wait_for_irq(dev, cmd, TMIO_SD_INFO1,
513 return tmio_sd_wait_for_irq(dev, cmd, TMIO_SD_INFO2,
514 TMIO_SD_INFO2_SCLKDIVEN);
517 static int tmio_sd_set_bus_width(struct tmio_sd_priv *priv,
522 switch (mmc->bus_width) {
525 val = TMIO_SD_OPTION_WIDTH_1;
528 val = TMIO_SD_OPTION_WIDTH_4;
531 val = TMIO_SD_OPTION_WIDTH_8;
537 tmp = tmio_sd_readl(priv, TMIO_SD_OPTION);
538 tmp &= ~TMIO_SD_OPTION_WIDTH_MASK;
540 tmio_sd_writel(priv, tmp, TMIO_SD_OPTION);
545 static void tmio_sd_set_ddr_mode(struct tmio_sd_priv *priv,
550 tmp = tmio_sd_readl(priv, TMIO_SD_IF_MODE);
552 tmp |= TMIO_SD_IF_MODE_DDR;
554 tmp &= ~TMIO_SD_IF_MODE_DDR;
555 tmio_sd_writel(priv, tmp, TMIO_SD_IF_MODE);
558 static ulong tmio_sd_clk_get_rate(struct tmio_sd_priv *priv)
560 return priv->clk_get_rate(priv);
563 static void tmio_sd_set_clk_rate(struct tmio_sd_priv *priv,
566 unsigned int divisor;
573 mclk = tmio_sd_clk_get_rate(priv);
575 divisor = DIV_ROUND_UP(mclk, mmc->clock);
578 val = (priv->caps & TMIO_SD_CAP_RCAR) ?
579 TMIO_SD_CLKCTL_RCAR_DIV1 : TMIO_SD_CLKCTL_DIV1;
580 else if (divisor <= 2)
581 val = TMIO_SD_CLKCTL_DIV2;
582 else if (divisor <= 4)
583 val = TMIO_SD_CLKCTL_DIV4;
584 else if (divisor <= 8)
585 val = TMIO_SD_CLKCTL_DIV8;
586 else if (divisor <= 16)
587 val = TMIO_SD_CLKCTL_DIV16;
588 else if (divisor <= 32)
589 val = TMIO_SD_CLKCTL_DIV32;
590 else if (divisor <= 64)
591 val = TMIO_SD_CLKCTL_DIV64;
592 else if (divisor <= 128)
593 val = TMIO_SD_CLKCTL_DIV128;
594 else if (divisor <= 256)
595 val = TMIO_SD_CLKCTL_DIV256;
596 else if (divisor <= 512 || !(priv->caps & TMIO_SD_CAP_DIV1024))
597 val = TMIO_SD_CLKCTL_DIV512;
599 val = TMIO_SD_CLKCTL_DIV1024;
601 tmp = tmio_sd_readl(priv, TMIO_SD_CLKCTL);
602 if (tmp & TMIO_SD_CLKCTL_SCLKEN &&
603 (tmp & TMIO_SD_CLKCTL_DIV_MASK) == val)
606 /* stop the clock before changing its rate to avoid a glitch signal */
607 tmp &= ~TMIO_SD_CLKCTL_SCLKEN;
608 tmio_sd_writel(priv, tmp, TMIO_SD_CLKCTL);
610 tmp &= ~TMIO_SD_CLKCTL_DIV_MASK;
611 tmp |= val | TMIO_SD_CLKCTL_OFFEN;
612 tmio_sd_writel(priv, tmp, TMIO_SD_CLKCTL);
614 tmp |= TMIO_SD_CLKCTL_SCLKEN;
615 tmio_sd_writel(priv, tmp, TMIO_SD_CLKCTL);
620 static void tmio_sd_set_pins(struct udevice *dev)
622 __maybe_unused struct mmc *mmc = mmc_get_mmc_dev(dev);
624 #ifdef CONFIG_DM_REGULATOR
625 struct tmio_sd_priv *priv = dev_get_priv(dev);
627 if (priv->vqmmc_dev) {
628 if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180)
629 regulator_set_value(priv->vqmmc_dev, 1800000);
631 regulator_set_value(priv->vqmmc_dev, 3300000);
632 regulator_set_enable(priv->vqmmc_dev, true);
636 #ifdef CONFIG_PINCTRL
637 if (mmc->signal_voltage == MMC_SIGNAL_VOLTAGE_180)
638 pinctrl_select_state(dev, "state_uhs");
640 pinctrl_select_state(dev, "default");
644 int tmio_sd_set_ios(struct udevice *dev)
646 struct tmio_sd_priv *priv = dev_get_priv(dev);
647 struct mmc *mmc = mmc_get_mmc_dev(dev);
650 dev_dbg(dev, "clock %uHz, DDRmode %d, width %u\n",
651 mmc->clock, mmc->ddr_mode, mmc->bus_width);
653 tmio_sd_set_clk_rate(priv, mmc);
654 ret = tmio_sd_set_bus_width(priv, mmc);
657 tmio_sd_set_ddr_mode(priv, mmc);
658 tmio_sd_set_pins(dev);
663 int tmio_sd_get_cd(struct udevice *dev)
665 struct tmio_sd_priv *priv = dev_get_priv(dev);
667 if (priv->caps & TMIO_SD_CAP_NONREMOVABLE)
670 return !!(tmio_sd_readl(priv, TMIO_SD_INFO1) &
674 static void tmio_sd_host_init(struct tmio_sd_priv *priv)
678 /* soft reset of the host */
679 tmp = tmio_sd_readl(priv, TMIO_SD_SOFT_RST);
680 tmp &= ~TMIO_SD_SOFT_RST_RSTX;
681 tmio_sd_writel(priv, tmp, TMIO_SD_SOFT_RST);
682 tmp |= TMIO_SD_SOFT_RST_RSTX;
683 tmio_sd_writel(priv, tmp, TMIO_SD_SOFT_RST);
685 /* FIXME: implement eMMC hw_reset */
687 tmio_sd_writel(priv, TMIO_SD_STOP_SEC, TMIO_SD_STOP);
690 * Connected to 32bit AXI.
691 * This register dropped backward compatibility at version 0x10.
692 * Write an appropriate value depending on the IP version.
694 if (priv->version >= 0x10)
695 tmio_sd_writel(priv, 0x101, TMIO_SD_HOST_MODE);
697 tmio_sd_writel(priv, 0x0, TMIO_SD_HOST_MODE);
699 if (priv->caps & TMIO_SD_CAP_DMA_INTERNAL) {
700 tmp = tmio_sd_readl(priv, TMIO_SD_DMA_MODE);
701 tmp |= TMIO_SD_DMA_MODE_ADDR_INC;
702 tmio_sd_writel(priv, tmp, TMIO_SD_DMA_MODE);
706 int tmio_sd_bind(struct udevice *dev)
708 struct tmio_sd_plat *plat = dev_get_platdata(dev);
710 return mmc_bind(dev, &plat->mmc, &plat->cfg);
713 int tmio_sd_probe(struct udevice *dev, u32 quirks)
715 struct tmio_sd_plat *plat = dev_get_platdata(dev);
716 struct tmio_sd_priv *priv = dev_get_priv(dev);
717 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
722 base = devfdt_get_addr(dev);
723 if (base == FDT_ADDR_T_NONE)
726 priv->regbase = devm_ioremap(dev, base, SZ_2K);
730 #ifdef CONFIG_DM_REGULATOR
731 device_get_supply_regulator(dev, "vqmmc-supply", &priv->vqmmc_dev);
733 regulator_set_value(priv->vqmmc_dev, 3300000);
736 ret = mmc_of_parse(dev, &plat->cfg);
738 dev_err(dev, "failed to parse host caps\n");
742 plat->cfg.name = dev->name;
743 plat->cfg.host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
748 priv->version = tmio_sd_readl(priv, TMIO_SD_VERSION) &
750 dev_dbg(dev, "version %x\n", priv->version);
751 if (priv->version >= 0x10) {
752 priv->caps |= TMIO_SD_CAP_DMA_INTERNAL;
753 priv->caps |= TMIO_SD_CAP_DIV1024;
756 if (fdt_get_property(gd->fdt_blob, dev_of_offset(dev), "non-removable",
758 priv->caps |= TMIO_SD_CAP_NONREMOVABLE;
760 tmio_sd_host_init(priv);
762 mclk = tmio_sd_clk_get_rate(priv);
764 plat->cfg.voltages = MMC_VDD_165_195 | MMC_VDD_32_33 | MMC_VDD_33_34;
765 plat->cfg.f_min = mclk /
766 (priv->caps & TMIO_SD_CAP_DIV1024 ? 1024 : 512);
767 plat->cfg.f_max = mclk;
768 plat->cfg.b_max = U32_MAX; /* max value of TMIO_SD_SECCNT */
770 upriv->mmc = &plat->mmc;