drivers/sdhc/mcux_sdif.c - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright 2022 NXP
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 #define DT_DRV_COMPAT nxp_lpc_sdif

 #include <zephyr/drivers/sdhc.h>
 #include <zephyr/devicetree.h>
 #include <zephyr/drivers/pinctrl.h>
 #include <zephyr/drivers/clock_control.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/irq.h>
 #include <zephyr/kernel.h>
 #include <fsl_sdif.h>

 LOG_MODULE_REGISTER(sdif, CONFIG_SDHC_LOG_LEVEL);

 enum mcux_sdif_callback_status {
 	TRANSFER_CMD_COMPLETE = BIT(0),
 	TRANSFER_CMD_FAILED = BIT(1),
 	TRANSFER_DATA_COMPLETE = BIT(2),
 	TRANSFER_DATA_FAILED = BIT(3),
 };

 #define TRANSFER_CMD_FLAGS (TRANSFER_CMD_COMPLETE | TRANSFER_CMD_FAILED)
 #define TRANSFER_DATA_FLAGS (TRANSFER_DATA_COMPLETE | TRANSFER_DATA_FAILED)

 #define MCUX_SDIF_RESET_TIMEOUT_VALUE (1000000U)

 #define MCUX_SDIF_DEFAULT_TIMEOUT (5000U)

 #define MCUX_SDIF_F_MAX MHZ(50)
 #define MCUX_SDIF_F_MIN KHZ(400)

 struct mcux_sdif_config {
 	SDIF_Type *base;
 	const struct pinctrl_dev_config *pincfg;
 	uint32_t response_timeout;
 	uint32_t cd_debounce_clocks;
 	uint32_t data_timeout;
 	const struct device *clock_dev;
 	clock_control_subsys_t clock_subsys;
 	void (*irq_config_func)(const struct device *dev);
 };

 struct mcux_sdif_data {
 	volatile uint32_t transfer_status;
 	sdif_handle_t transfer_handle;
 	struct k_sem transfer_sem;
 	struct k_mutex access_mutex;
 #ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
 	uint32_t *sdif_dma_descriptor;
 #endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */
 };


 static void mcux_sdif_transfer_complete(SDIF_Type *base, void *handle,
 	status_t status, void *user_data)
 {
 	const struct device *dev = (const struct device *)user_data;
 	struct mcux_sdif_data *data = dev->data;

 	if (status == kStatus_SDIF_DataTransferFail) {
 		data->transfer_status |= TRANSFER_DATA_FAILED;
 	} else if (status == kStatus_SDIF_DataTransferSuccess) {
 		data->transfer_status |= TRANSFER_DATA_COMPLETE;
 	} else if (status == kStatus_SDIF_SendCmdFail) {
 		data->transfer_status |= TRANSFER_CMD_FAILED;
 	} else if (status == kStatus_SDIF_SendCmdSuccess) {
 		data->transfer_status |= TRANSFER_CMD_COMPLETE;
 	} else {
 		__ASSERT(false, "Unknown status code from SD interrupt");
 	}
 	k_sem_give(&data->transfer_sem);
 }


 /* SDIF IRQ handler not exposed in SDK header, so declare it here */
 extern void SDIO_DriverIRQHandler(void);

 /*
  * MCUX SDIF interrupt service routine
  */
 static int mcux_sdif_isr(const struct device *dev)
 {
 	SDIO_DriverIRQHandler();
 	return 0;
 }

 static int mcux_sdif_reset(const struct device *dev)
 {
 	const struct mcux_sdif_config *config = dev->config;
 	struct mcux_sdif_data *data = dev->data;

 	k_mutex_lock(&data->access_mutex, K_FOREVER);
 	/* Disable all interrupts */
 	SDIF_DisableInterrupt(config->base, kSDIF_AllInterruptStatus);

 	/* Release all bus lines */
 	(void)SDIF_Reset(config->base, kSDIF_ResetAll, MCUX_SDIF_RESET_TIMEOUT_VALUE);

 	/* clear all interrupt/DMA status */
 	SDIF_ClearInterruptStatus(config->base, kSDIF_AllInterruptStatus);
 	SDIF_ClearInternalDMAStatus(config->base, kSDIF_DMAAllStatus);
 	k_mutex_unlock(&data->access_mutex);
 	return 0;
 }

 static int mcux_sdif_get_host_props(const struct device *dev,
 	struct sdhc_host_props *props)
 {
 	memset(props, 0, sizeof(*props));
 	props->f_max = MCUX_SDIF_F_MAX;
 	props->f_min = MCUX_SDIF_F_MIN;
 	props->power_delay = 500;
 	props->host_caps.high_spd_support = true;
 	props->host_caps.suspend_res_support = true;
 	props->host_caps.vol_330_support = true;
 	props->host_caps.bus_8_bit_support = true;
 	props->max_current_330 = 1024;
 	return 0;
 }

 static int mcux_sdif_set_io(const struct device *dev, struct sdhc_io *ios)
 {
 	const struct mcux_sdif_config *config = dev->config;
 	uint32_t src_clk_hz, bus_clk_hz;

 	if (clock_control_get_rate(config->clock_dev,
 				config->clock_subsys,
 				&src_clk_hz)) {
 		return -EINVAL;
 	}

 	/* If clock is set to zero, we should gate clock */
 	if (ios->clock != 0 &&
 			(ios->clock <= MCUX_SDIF_F_MAX) &&
 			(ios->clock >= MCUX_SDIF_F_MIN)) {
 		bus_clk_hz = SDIF_SetCardClock(config->base, src_clk_hz, ios->clock);
 		if (bus_clk_hz == 0) {
 			return -ENOTSUP;
 		}
 		LOG_DBG("SDIF clock set to %d", bus_clk_hz);
 	} else if (ios->clock != 0) {
 		/* Invalid clock setting */
 		return -ENOTSUP;
 	}

 	if (ios->bus_mode != SDHC_BUSMODE_PUSHPULL) {
 		return -ENOTSUP;
 	}

 	SDIF_EnableCardPower(config->base, ios->power_mode == SDHC_POWER_ON);

 	switch (ios->bus_width) {
 	case SDHC_BUS_WIDTH1BIT:
 		SDIF_SetCardBusWidth(config->base, kSDIF_Bus1BitWidth);
 		break;
 	case SDHC_BUS_WIDTH4BIT:
 		SDIF_SetCardBusWidth(config->base, kSDIF_Bus4BitWidth);
 		break;
 	case SDHC_BUS_WIDTH8BIT:
 		SDIF_SetCardBusWidth(config->base, kSDIF_Bus8BitWidth);
 		break;
 	default:
 		return -ENOTSUP;
 	}

 	if (ios->signal_voltage != SD_VOL_3_3_V) {
 		return -ENOTSUP;
 	}
 	return 0;
 }

 /*
  * Early system init for SDHC
  */
 static int mcux_sdif_init(const struct device *dev)
 {
 	const struct mcux_sdif_config *config = dev->config;
 	struct mcux_sdif_data *data = dev->data;
 	sdif_transfer_callback_t sdif_cb = {
 		.TransferComplete = mcux_sdif_transfer_complete,
 	};
 	int ret;
 	sdif_config_t host_config = {0};

 	ret = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);
 	if (ret) {
 		return ret;
 	}

 	host_config.responseTimeout = config->response_timeout;
 	host_config.cardDetDebounce_Clock = config->cd_debounce_clocks;
 	host_config.dataTimeout = config->data_timeout;
 	SDIF_Init(config->base, &host_config);

 	SDIF_TransferCreateHandle(config->base, &data->transfer_handle,
 		&sdif_cb, (void *)dev);
 	config->irq_config_func(dev);

 	k_mutex_init(&data->access_mutex);
 	k_sem_init(&data->transfer_sem, 0, 1);
 	return 0;
 }

 static int mcux_sdif_get_card_present(const struct device *dev)
 {
 	const struct mcux_sdif_config *config = dev->config;

 	return SDIF_DetectCardInsert(config->base, false);
 }


 static int mcux_sdif_transfer(const struct device *dev,
 			struct sdhc_command *cmd,
 			struct sdhc_data *data)
 {
 	const struct mcux_sdif_config *config = dev->config;
 	struct mcux_sdif_data *dev_data = dev->data;
 	status_t error;
 	sdif_transfer_t transfer = {0};
 	sdif_command_t sdif_cmd = {0};
 	sdif_data_t sdif_data;

 #ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
 	sdif_dma_config_t dma_config = {
 		.enableFixBurstLen = false,
 		.mode = kSDIF_DualDMAMode,
 		.dmaDesBufferStartAddr = dev_data->sdif_dma_descriptor,
 		.dmaDesBufferLen = (CONFIG_MCUX_SDIF_DMA_BUFFER_SIZE / 4),
 		.dmaDesSkipLen = 0
 	};
 #endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */

 	if (cmd->opcode == SD_GO_IDLE_STATE) {
 		/*
 		 * Special handling for CMD0- we want to initialize the card
 		 * with 80 clocks, so we will use the SDIF_SendCardActive api
 		 * to ensure that CMD0 is sent while the SEND_INITIALIZATION
 		 * bit is set in the CMD register.
 		 */
 		if (!SDIF_SendCardActive(config->base, MCUX_SDIF_DEFAULT_TIMEOUT)) {
 			LOG_ERR("Card clock init failed");
 			return -EIO;
 		}
 		return 0;
 	}

 	/* Copy Zephyr data fields to SDIF struct */
 	sdif_cmd.index = cmd->opcode;
 	sdif_cmd.argument = cmd->arg;
 	/* Lower 4 bits hold native SD response type */
 	sdif_cmd.responseType = (cmd->response_type & SDHC_NATIVE_RESPONSE_MASK);
 	transfer.command = &sdif_cmd;

 	if (data) {
 		transfer.data = &sdif_data;
 		memset(&sdif_data, 0, sizeof(sdif_data));
 		sdif_data.blockSize = data->block_size;
 		sdif_data.blockCount = data->blocks;
 		/*
 		 * Determine command type. Note that the driver is expected
 		 * to handle CMD12 and CMD23 for multiblock I/O.
 		 */
 		switch (cmd->opcode) {
 		case SD_WRITE_SINGLE_BLOCK:
 		case SD_WRITE_MULTIPLE_BLOCK:
 			sdif_data.enableAutoCommand12 = true;
 			sdif_data.txData = data->data;
 			break;
 		case SD_READ_SINGLE_BLOCK:
 		case SD_READ_MULTIPLE_BLOCK:
 			sdif_data.enableAutoCommand12 = true;
 			sdif_data.rxData = data->data;
 			break;
 		case SD_APP_SEND_SCR:
 		case SD_SWITCH:
 		case SD_APP_SEND_NUM_WRITTEN_BLK:
 			sdif_data.rxData = data->data;
 			break;
 		default:
 			return -ENOTSUP;
 		}
 	}
 	dev_data->transfer_status = 0U;
 	k_sem_reset(&dev_data->transfer_sem);
 	do {
 #ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
 		error = SDIF_TransferNonBlocking(config->base,
 			&dev_data->transfer_handle, &dma_config, &transfer);
 #else
 		error = SDIF_TransferNonBlocking(config->base,
 			&dev_data->transfer_handle, NULL, &transfer);
 #endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */
 	} while (error == kStatus_SDIF_SyncCmdTimeout && cmd->timeout_ms--);

 	if (error != kStatus_Success) {
 		return -EIO;
 	}
 	/* Wait for the command to complete */
 	while ((dev_data->transfer_status & TRANSFER_CMD_FLAGS) == 0U) {
 		if (k_sem_take(&dev_data->transfer_sem, K_MSEC(cmd->timeout_ms))) {
 			return -ETIMEDOUT;
 		}
 	}
 	if (dev_data->transfer_status & TRANSFER_CMD_FAILED) {
 		return -EIO;
 	}
 	/* If data was sent, wait for that to complete */
 	if (data) {
 		while ((dev_data->transfer_status & TRANSFER_DATA_FLAGS) == 0) {
 			if (k_sem_take(&dev_data->transfer_sem, K_MSEC(data->timeout_ms))) {
 				return -ETIMEDOUT;
 			}
 		}
 		if (dev_data->transfer_status & TRANSFER_DATA_FAILED) {
 			return -EIO;
 		}
 	}
 	/* Record command response */
 	memcpy(cmd->response, sdif_cmd.response, sizeof(cmd->response));
 	if (data) {
 		/* Record bytes transferred */
 		data->bytes_xfered = dev_data->transfer_handle.transferredWords;
 	}

 	return 0;
 }

 static int mcux_sdif_card_busy(const struct device *dev)
 {
 	const struct mcux_sdif_config *config = dev->config;

 	return (SDIF_GetControllerStatus(config->base) & SDIF_STATUS_DATA_BUSY_MASK) ?
 		1 : 0;
 }

 /* Stops transmission of data using CMD12, after failed command */
 static void mcux_sdif_stop_transmission(const struct device *dev)
 {
 	const struct mcux_sdif_config *config = dev->config;
 	struct mcux_sdif_data *data = dev->data;

 	sdif_command_t cmd = {0};
 	sdif_transfer_t transfer = {
 		.command = &cmd,
 		.data = NULL,
 	};

 	cmd.index = SD_STOP_TRANSMISSION;
 	cmd.argument = 0;
 	cmd.type = kCARD_CommandTypeAbort;
 	cmd.responseType = SD_RSP_TYPE_R1b;

 	/* Disable transmit interrupt, since we are using blocking transfer */
 	SDIF_DisableInterrupt(config->base, kSDIF_AllInterruptStatus);
 	SDIF_ClearInterruptStatus(config->base, kSDIF_AllInterruptStatus);

 	LOG_WRN("Transfer failed, sending CMD12");
 	SDIF_TransferNonBlocking(config->base, &data->transfer_handle, NULL,
 		&transfer);
 }

 static int mcux_sdif_request(const struct device *dev,
 			struct sdhc_command *cmd,
 			struct sdhc_data *data)
 {
 	int ret;
 	int busy_timeout = MCUX_SDIF_DEFAULT_TIMEOUT;
 	struct mcux_sdif_data *dev_data = dev->data;

 	ret = k_mutex_lock(&dev_data->access_mutex, K_MSEC(cmd->timeout_ms));
 	if (ret) {
 		LOG_ERR("Could not access card");
 		return -EBUSY;
 	}
 	do {
 		ret = mcux_sdif_transfer(dev, cmd, data);
 		if (data && ret) {
 			/* Send CMD12 to stop transmission after error */
 			mcux_sdif_stop_transmission(dev);
 			while (busy_timeout > 0) {
 				if (!mcux_sdif_card_busy(dev)) {
 					break;
 				}
 				/* Wait 125us before polling again */
 				k_busy_wait(125);
 				busy_timeout -= 125;
 			}
 			if (busy_timeout <= 0) {
 				LOG_DBG("Card did not idle after CMD12");
 				k_mutex_unlock(&dev_data->access_mutex);
 				return -ETIMEDOUT;
 			}
 		}
 	} while (ret != 0 && (cmd->retries-- > 0));
 	k_mutex_unlock(&dev_data->access_mutex);
 	return ret;
 }

 static const struct sdhc_driver_api sdif_api = {
 	.reset = mcux_sdif_reset,
 	.get_host_props = mcux_sdif_get_host_props,
 	.set_io = mcux_sdif_set_io,
 	.get_card_present = mcux_sdif_get_card_present,
 	.request = mcux_sdif_request,
 	.card_busy = mcux_sdif_card_busy,
 };

 #ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
 #define MCUX_SDIF_DMA_DESCRIPTOR_DEFINE(n)					\
 	static uint32_t	mcux_sdif_dma_descriptor_##n				\
 		[CONFIG_MCUX_SDIF_DMA_BUFFER_SIZE / 4] __aligned(4);
 #define MCUX_SDIF_DMA_DESCRIPTOR_INIT(n)					\
 	.sdif_dma_descriptor = mcux_sdif_dma_descriptor_##n,
 #else
 #define MCUX_SDIF_DMA_DESCRIPTOR_DEFINE(n)
 #define MCUX_SDIF_DMA_DESCRIPTOR_INIT(n)
 #endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */


 #define MCUX_SDIF_INIT(n)							\
 	static void sdif_##n##_irq_config_func(const struct device *dev)	\
 	{									\
 		IRQ_CONNECT(DT_INST_IRQN(n), DT_INST_IRQ(n, priority),		\
 			mcux_sdif_isr, DEVICE_DT_INST_GET(n), 0);		\
 		irq_enable(DT_INST_IRQN(n));					\
 	}									\
 										\
 	PINCTRL_DT_INST_DEFINE(n);						\
 										\
 	static const struct mcux_sdif_config sdif_##n##_config = {		\
 		.base = (SDIF_Type *) DT_INST_REG_ADDR(n),			\
 		.pincfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n),			\
 		.response_timeout = DT_INST_PROP(n, response_timeout),		\
 		.cd_debounce_clocks = DT_INST_PROP(n, cd_debounce_clocks),	\
 		.data_timeout = DT_INST_PROP(n, data_timeout),			\
 		.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)),		\
 		.clock_subsys =							\
 			(clock_control_subsys_t)DT_INST_CLOCKS_CELL(n, name),	\
 		.irq_config_func = sdif_##n##_irq_config_func,			\
 	};									\
 										\
 	MCUX_SDIF_DMA_DESCRIPTOR_DEFINE(n);					\
 										\
 	static struct mcux_sdif_data sdif_##n##_data = {			\
 		MCUX_SDIF_DMA_DESCRIPTOR_INIT(n)				\
 	};									\
 										\
 	DEVICE_DT_INST_DEFINE(n,						\
 		&mcux_sdif_init,						\
 		NULL,								\
 		&sdif_##n##_data,						\
 		&sdif_##n##_config,						\
 		POST_KERNEL,							\
 		CONFIG_SDHC_INIT_PRIORITY,					\
 		&sdif_api);

 DT_INST_FOREACH_STATUS_OKAY(MCUX_SDIF_INIT)
	/*
	* Copyright 2022 NXP
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	#define DT_DRV_COMPAT nxp_lpc_sdif

	#include <zephyr/drivers/sdhc.h>
	#include <zephyr/devicetree.h>
	#include <zephyr/drivers/pinctrl.h>
	#include <zephyr/drivers/clock_control.h>
	#include <zephyr/logging/log.h>
	#include <zephyr/irq.h>
	#include <zephyr/kernel.h>
	#include <fsl_sdif.h>

	LOG_MODULE_REGISTER(sdif, CONFIG_SDHC_LOG_LEVEL);

	enum mcux_sdif_callback_status {
	TRANSFER_CMD_COMPLETE = BIT(0),
	TRANSFER_CMD_FAILED = BIT(1),
	TRANSFER_DATA_COMPLETE = BIT(2),
	TRANSFER_DATA_FAILED = BIT(3),
	};

	#define TRANSFER_CMD_FLAGS (TRANSFER_CMD_COMPLETE \| TRANSFER_CMD_FAILED)
	#define TRANSFER_DATA_FLAGS (TRANSFER_DATA_COMPLETE \| TRANSFER_DATA_FAILED)

	#define MCUX_SDIF_RESET_TIMEOUT_VALUE (1000000U)

	#define MCUX_SDIF_DEFAULT_TIMEOUT (5000U)

	#define MCUX_SDIF_F_MAX MHZ(50)
	#define MCUX_SDIF_F_MIN KHZ(400)

	struct mcux_sdif_config {
	SDIF_Type *base;
	const struct pinctrl_dev_config *pincfg;
	uint32_t response_timeout;
	uint32_t cd_debounce_clocks;
	uint32_t data_timeout;
	const struct device *clock_dev;
	clock_control_subsys_t clock_subsys;
	void (irq_config_func)(const struct device dev);
	};

	struct mcux_sdif_data {
	volatile uint32_t transfer_status;
	sdif_handle_t transfer_handle;
	struct k_sem transfer_sem;
	struct k_mutex access_mutex;
	#ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
	uint32_t *sdif_dma_descriptor;
	#endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */
	};


	static void mcux_sdif_transfer_complete(SDIF_Type base, void handle,
	status_t status, void *user_data)
	{
	const struct device dev = (const struct device )user_data;
	struct mcux_sdif_data *data = dev->data;

	if (status == kStatus_SDIF_DataTransferFail) {
	data->transfer_status \|= TRANSFER_DATA_FAILED;
	} else if (status == kStatus_SDIF_DataTransferSuccess) {
	data->transfer_status \|= TRANSFER_DATA_COMPLETE;
	} else if (status == kStatus_SDIF_SendCmdFail) {
	data->transfer_status \|= TRANSFER_CMD_FAILED;
	} else if (status == kStatus_SDIF_SendCmdSuccess) {
	data->transfer_status \|= TRANSFER_CMD_COMPLETE;
	} else {
	__ASSERT(false, "Unknown status code from SD interrupt");
	}
	k_sem_give(&data->transfer_sem);
	}


	/* SDIF IRQ handler not exposed in SDK header, so declare it here */
	extern void SDIO_DriverIRQHandler(void);

	/*
	* MCUX SDIF interrupt service routine
	*/
	static int mcux_sdif_isr(const struct device *dev)
	{
	SDIO_DriverIRQHandler();
	return 0;
	}

	static int mcux_sdif_reset(const struct device *dev)
	{
	const struct mcux_sdif_config *config = dev->config;
	struct mcux_sdif_data *data = dev->data;

	k_mutex_lock(&data->access_mutex, K_FOREVER);
	/* Disable all interrupts */
	SDIF_DisableInterrupt(config->base, kSDIF_AllInterruptStatus);

	/* Release all bus lines */
	(void)SDIF_Reset(config->base, kSDIF_ResetAll, MCUX_SDIF_RESET_TIMEOUT_VALUE);

	/* clear all interrupt/DMA status */
	SDIF_ClearInterruptStatus(config->base, kSDIF_AllInterruptStatus);
	SDIF_ClearInternalDMAStatus(config->base, kSDIF_DMAAllStatus);
	k_mutex_unlock(&data->access_mutex);
	return 0;
	}

	static int mcux_sdif_get_host_props(const struct device *dev,
	struct sdhc_host_props *props)
	{
	memset(props, 0, sizeof(*props));
	props->f_max = MCUX_SDIF_F_MAX;
	props->f_min = MCUX_SDIF_F_MIN;
	props->power_delay = 500;
	props->host_caps.high_spd_support = true;
	props->host_caps.suspend_res_support = true;
	props->host_caps.vol_330_support = true;
	props->host_caps.bus_8_bit_support = true;
	props->max_current_330 = 1024;
	return 0;
	}

	static int mcux_sdif_set_io(const struct device dev, struct sdhc_io ios)
	{
	const struct mcux_sdif_config *config = dev->config;
	uint32_t src_clk_hz, bus_clk_hz;

	if (clock_control_get_rate(config->clock_dev,
	config->clock_subsys,
	&src_clk_hz)) {
	return -EINVAL;
	}

	/* If clock is set to zero, we should gate clock */
	if (ios->clock != 0 &&
	(ios->clock <= MCUX_SDIF_F_MAX) &&
	(ios->clock >= MCUX_SDIF_F_MIN)) {
	bus_clk_hz = SDIF_SetCardClock(config->base, src_clk_hz, ios->clock);
	if (bus_clk_hz == 0) {
	return -ENOTSUP;
	}
	LOG_DBG("SDIF clock set to %d", bus_clk_hz);
	} else if (ios->clock != 0) {
	/* Invalid clock setting */
	return -ENOTSUP;
	}

	if (ios->bus_mode != SDHC_BUSMODE_PUSHPULL) {
	return -ENOTSUP;
	}

	SDIF_EnableCardPower(config->base, ios->power_mode == SDHC_POWER_ON);

	switch (ios->bus_width) {
	case SDHC_BUS_WIDTH1BIT:
	SDIF_SetCardBusWidth(config->base, kSDIF_Bus1BitWidth);
	break;
	case SDHC_BUS_WIDTH4BIT:
	SDIF_SetCardBusWidth(config->base, kSDIF_Bus4BitWidth);
	break;
	case SDHC_BUS_WIDTH8BIT:
	SDIF_SetCardBusWidth(config->base, kSDIF_Bus8BitWidth);
	break;
	default:
	return -ENOTSUP;
	}

	if (ios->signal_voltage != SD_VOL_3_3_V) {
	return -ENOTSUP;
	}
	return 0;
	}

	/*
	* Early system init for SDHC
	*/
	static int mcux_sdif_init(const struct device *dev)
	{
	const struct mcux_sdif_config *config = dev->config;
	struct mcux_sdif_data *data = dev->data;
	sdif_transfer_callback_t sdif_cb = {
	.TransferComplete = mcux_sdif_transfer_complete,
	};
	int ret;
	sdif_config_t host_config = {0};

	ret = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);
	if (ret) {
	return ret;
	}

	host_config.responseTimeout = config->response_timeout;
	host_config.cardDetDebounce_Clock = config->cd_debounce_clocks;
	host_config.dataTimeout = config->data_timeout;
	SDIF_Init(config->base, &host_config);

	SDIF_TransferCreateHandle(config->base, &data->transfer_handle,
	&sdif_cb, (void *)dev);
	config->irq_config_func(dev);

	k_mutex_init(&data->access_mutex);
	k_sem_init(&data->transfer_sem, 0, 1);
	return 0;
	}

	static int mcux_sdif_get_card_present(const struct device *dev)
	{
	const struct mcux_sdif_config *config = dev->config;

	return SDIF_DetectCardInsert(config->base, false);
	}


	static int mcux_sdif_transfer(const struct device *dev,
	struct sdhc_command *cmd,
	struct sdhc_data *data)
	{
	const struct mcux_sdif_config *config = dev->config;
	struct mcux_sdif_data *dev_data = dev->data;
	status_t error;
	sdif_transfer_t transfer = {0};
	sdif_command_t sdif_cmd = {0};
	sdif_data_t sdif_data;

	#ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
	sdif_dma_config_t dma_config = {
	.enableFixBurstLen = false,
	.mode = kSDIF_DualDMAMode,
	.dmaDesBufferStartAddr = dev_data->sdif_dma_descriptor,
	.dmaDesBufferLen = (CONFIG_MCUX_SDIF_DMA_BUFFER_SIZE / 4),
	.dmaDesSkipLen = 0
	};
	#endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */

	if (cmd->opcode == SD_GO_IDLE_STATE) {
	/*
	* Special handling for CMD0- we want to initialize the card
	* with 80 clocks, so we will use the SDIF_SendCardActive api
	* to ensure that CMD0 is sent while the SEND_INITIALIZATION
	* bit is set in the CMD register.
	*/
	if (!SDIF_SendCardActive(config->base, MCUX_SDIF_DEFAULT_TIMEOUT)) {
	LOG_ERR("Card clock init failed");
	return -EIO;
	}
	return 0;
	}

	/* Copy Zephyr data fields to SDIF struct */
	sdif_cmd.index = cmd->opcode;
	sdif_cmd.argument = cmd->arg;
	/* Lower 4 bits hold native SD response type */
	sdif_cmd.responseType = (cmd->response_type & SDHC_NATIVE_RESPONSE_MASK);
	transfer.command = &sdif_cmd;

	if (data) {
	transfer.data = &sdif_data;
	memset(&sdif_data, 0, sizeof(sdif_data));
	sdif_data.blockSize = data->block_size;
	sdif_data.blockCount = data->blocks;
	/*
	* Determine command type. Note that the driver is expected
	* to handle CMD12 and CMD23 for multiblock I/O.
	*/
	switch (cmd->opcode) {
	case SD_WRITE_SINGLE_BLOCK:
	case SD_WRITE_MULTIPLE_BLOCK:
	sdif_data.enableAutoCommand12 = true;
	sdif_data.txData = data->data;
	break;
	case SD_READ_SINGLE_BLOCK:
	case SD_READ_MULTIPLE_BLOCK:
	sdif_data.enableAutoCommand12 = true;
	sdif_data.rxData = data->data;
	break;
	case SD_APP_SEND_SCR:
	case SD_SWITCH:
	case SD_APP_SEND_NUM_WRITTEN_BLK:
	sdif_data.rxData = data->data;
	break;
	default:
	return -ENOTSUP;
	}
	}
	dev_data->transfer_status = 0U;
	k_sem_reset(&dev_data->transfer_sem);
	do {
	#ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
	error = SDIF_TransferNonBlocking(config->base,
	&dev_data->transfer_handle, &dma_config, &transfer);
	#else
	error = SDIF_TransferNonBlocking(config->base,
	&dev_data->transfer_handle, NULL, &transfer);
	#endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */
	} while (error == kStatus_SDIF_SyncCmdTimeout && cmd->timeout_ms--);

	if (error != kStatus_Success) {
	return -EIO;
	}
	/* Wait for the command to complete */
	while ((dev_data->transfer_status & TRANSFER_CMD_FLAGS) == 0U) {
	if (k_sem_take(&dev_data->transfer_sem, K_MSEC(cmd->timeout_ms))) {
	return -ETIMEDOUT;
	}
	}
	if (dev_data->transfer_status & TRANSFER_CMD_FAILED) {
	return -EIO;
	}
	/* If data was sent, wait for that to complete */
	if (data) {
	while ((dev_data->transfer_status & TRANSFER_DATA_FLAGS) == 0) {
	if (k_sem_take(&dev_data->transfer_sem, K_MSEC(data->timeout_ms))) {
	return -ETIMEDOUT;
	}
	}
	if (dev_data->transfer_status & TRANSFER_DATA_FAILED) {
	return -EIO;
	}
	}
	/* Record command response */
	memcpy(cmd->response, sdif_cmd.response, sizeof(cmd->response));
	if (data) {
	/* Record bytes transferred */
	data->bytes_xfered = dev_data->transfer_handle.transferredWords;
	}

	return 0;
	}

	static int mcux_sdif_card_busy(const struct device *dev)
	{
	const struct mcux_sdif_config *config = dev->config;

	return (SDIF_GetControllerStatus(config->base) & SDIF_STATUS_DATA_BUSY_MASK) ?
	1 : 0;
	}

	/* Stops transmission of data using CMD12, after failed command */
	static void mcux_sdif_stop_transmission(const struct device *dev)
	{
	const struct mcux_sdif_config *config = dev->config;
	struct mcux_sdif_data *data = dev->data;

	sdif_command_t cmd = {0};
	sdif_transfer_t transfer = {
	.command = &cmd,
	.data = NULL,
	};

	cmd.index = SD_STOP_TRANSMISSION;
	cmd.argument = 0;
	cmd.type = kCARD_CommandTypeAbort;
	cmd.responseType = SD_RSP_TYPE_R1b;

	/* Disable transmit interrupt, since we are using blocking transfer */
	SDIF_DisableInterrupt(config->base, kSDIF_AllInterruptStatus);
	SDIF_ClearInterruptStatus(config->base, kSDIF_AllInterruptStatus);

	LOG_WRN("Transfer failed, sending CMD12");
	SDIF_TransferNonBlocking(config->base, &data->transfer_handle, NULL,
	&transfer);
	}

	static int mcux_sdif_request(const struct device *dev,
	struct sdhc_command *cmd,
	struct sdhc_data *data)
	{
	int ret;
	int busy_timeout = MCUX_SDIF_DEFAULT_TIMEOUT;
	struct mcux_sdif_data *dev_data = dev->data;

	ret = k_mutex_lock(&dev_data->access_mutex, K_MSEC(cmd->timeout_ms));
	if (ret) {
	LOG_ERR("Could not access card");
	return -EBUSY;
	}
	do {
	ret = mcux_sdif_transfer(dev, cmd, data);
	if (data && ret) {
	/* Send CMD12 to stop transmission after error */
	mcux_sdif_stop_transmission(dev);
	while (busy_timeout > 0) {
	if (!mcux_sdif_card_busy(dev)) {
	break;
	}
	/* Wait 125us before polling again */
	k_busy_wait(125);
	busy_timeout -= 125;
	}
	if (busy_timeout <= 0) {
	LOG_DBG("Card did not idle after CMD12");
	k_mutex_unlock(&dev_data->access_mutex);
	return -ETIMEDOUT;
	}
	}
	} while (ret != 0 && (cmd->retries-- > 0));
	k_mutex_unlock(&dev_data->access_mutex);
	return ret;
	}

	static const struct sdhc_driver_api sdif_api = {
	.reset = mcux_sdif_reset,
	.get_host_props = mcux_sdif_get_host_props,
	.set_io = mcux_sdif_set_io,
	.get_card_present = mcux_sdif_get_card_present,
	.request = mcux_sdif_request,
	.card_busy = mcux_sdif_card_busy,
	};

	#ifdef CONFIG_MCUX_SDIF_DMA_SUPPORT
	#define MCUX_SDIF_DMA_DESCRIPTOR_DEFINE(n) \
	static uint32_t mcux_sdif_dma_descriptor_##n \
	[CONFIG_MCUX_SDIF_DMA_BUFFER_SIZE / 4] __aligned(4);
	#define MCUX_SDIF_DMA_DESCRIPTOR_INIT(n) \
	.sdif_dma_descriptor = mcux_sdif_dma_descriptor_##n,
	#else
	#define MCUX_SDIF_DMA_DESCRIPTOR_DEFINE(n)
	#define MCUX_SDIF_DMA_DESCRIPTOR_INIT(n)
	#endif /* CONFIG_MCUX_SDIF_DMA_SUPPORT */


	#define MCUX_SDIF_INIT(n) \
	static void sdif_##n##_irq_config_func(const struct device *dev) \
	{ \
	IRQ_CONNECT(DT_INST_IRQN(n), DT_INST_IRQ(n, priority), \
	mcux_sdif_isr, DEVICE_DT_INST_GET(n), 0); \
	irq_enable(DT_INST_IRQN(n)); \
	} \
	\
	PINCTRL_DT_INST_DEFINE(n); \
	\
	static const struct mcux_sdif_config sdif_##n##_config = { \
	.base = (SDIF_Type *) DT_INST_REG_ADDR(n), \
	.pincfg = PINCTRL_DT_INST_DEV_CONFIG_GET(n), \
	.response_timeout = DT_INST_PROP(n, response_timeout), \
	.cd_debounce_clocks = DT_INST_PROP(n, cd_debounce_clocks), \
	.data_timeout = DT_INST_PROP(n, data_timeout), \
	.clock_dev = DEVICE_DT_GET(DT_INST_CLOCKS_CTLR(n)), \
	.clock_subsys = \
	(clock_control_subsys_t)DT_INST_CLOCKS_CELL(n, name), \
	.irq_config_func = sdif_##n##_irq_config_func, \
	}; \
	\
	MCUX_SDIF_DMA_DESCRIPTOR_DEFINE(n); \
	\
	static struct mcux_sdif_data sdif_##n##_data = { \
	MCUX_SDIF_DMA_DESCRIPTOR_INIT(n) \
	}; \
	\
	DEVICE_DT_INST_DEFINE(n, \
	&mcux_sdif_init, \
	NULL, \
	&sdif_##n##_data, \
	&sdif_##n##_config, \
	POST_KERNEL, \
	CONFIG_SDHC_INIT_PRIORITY, \
	&sdif_api);

	DT_INST_FOREACH_STATUS_OKAY(MCUX_SDIF_INIT)