zephyr/subsys/sd/Kconfig

# Copyright 2022 NXP
# SPDX-License-Identifier: Apache-2.0

# SD stack configuration options

menu "SD"

config MMC_STACK
	bool "MMC protocol support"
	help
	  Enable MMC protocol support. Required for eMMC cards to function.

config SDMMC_STACK
	bool "SDMMC protocol support"
	help
	  Enable SDMMC protocol support. Required for SD memory cards to
	  function.

config SDIO_STACK
	bool "SDIO protocol support"
	help
	  Enable SDIO protocol support. Required for SD I/O cards to function.

config SD_STACK
	bool
	default y if MMC_STACK || SDMMC_STACK || SDIO_STACK
	select SDHC
	help
	  Enable SD card support.

if SD_STACK

module = SD
module-str = SD stack
source "subsys/logging/Kconfig.template.log_config"

config SD_INIT_TIMEOUT
	int "Timeout while initializing SD card"
	default 1500
	help
	  Maximum time to wait, in milliseconds, for the SD card to initialize.

config SD_RETRY_COUNT
	int "Number of times to retry initialization commands"
	default 10
	help
	  Number of times to retry initialization commands in case of failure

config SD_OCR_RETRY_COUNT
	int "Number of times to retry SD OCR read"
	default 1000
	help
	  Number of times to retry SD OCR read command. OCR reads typically
	  require more retries than general SD commands

config SD_CMD_TIMEOUT
	int "Timeout for SD commands (in ms)"
	default 200
	help
	  Default timeout in milliseconds for SD commands

config SD_DATA_TIMEOUT
	int "Timeout for SD data transfer (in ms)"
	default 10000
	help
	  Default timeout in milliseconds for SD data transfer commands

config SD_BUFFER_SIZE
	int
	# If SDHC required buffer alignment, we need a full block size in
	# internal buffer
	default 512 if SDHC_BUFFER_ALIGNMENT != 1
	# If MMC is being used, need 512 bytes to read EXT_CSD
	default 512 if MMC_STACK
	# If SDIO is being used, need 512 bytes to read FUNC0 CIS
	default 512 if SDIO_STACK
	# Otherwise, we only need 64 bytes to read SD switch function
	default 64
	help
	  Size in bytes of internal buffer SD card uses for unaligned reads and
	  internal data reads during initialization

config SD_CMD_RETRIES
	int "Number of times to retry sending command to card"
	default 0
	help
	  Number of times to retry sending command to SD card in case of failure

config SD_DATA_RETRIES
	int "Number of times to retry sending data to card"
	default 3
	help
	  Number of times to retry sending data to SD card in case of failure


config SD_UHS_PROTOCOL
	bool "Ultra high speed SD card protocol support"
	default y if SDHC_SUPPORTS_UHS
	help
	  Enable support for ultra high speed SD cards. This can be disabled to
	  reduce code size, at the cost of data transfer speeds.

config MMC_RCA
	hex "MMC Relative card address"
	default 2
	help
	  Relative card address to publish to MMC card.

endif # SD_STACK

endmenu