path: root/drivers/spi/Kconfig

# SPDX-License-Identifier: GPL-2.0-only
#
# SPI driver configuration
#
menuconfig SPI
	bool "SPI support"
	depends on HAS_IOMEM
	help
	  The "Serial Peripheral Interface" is a low level synchronous
	  protocol.  Chips that support SPI can have data transfer rates
	  up to several tens of Mbit/sec.  Chips are addressed with a
	  controller and a chipselect.  Most SPI slaves don't support
	  dynamic device discovery; some are even write-only or read-only.

	  SPI is widely used by microcontrollers to talk with sensors,
	  eeprom and flash memory, codecs and various other controller
	  chips, analog to digital (and d-to-a) converters, and more.
	  MMC and SD cards can be accessed using SPI protocol; and for
	  DataFlash cards used in MMC sockets, SPI must always be used.

	  SPI is one of a family of similar protocols using a four wire
	  interface (select, clock, data in, data out) including Microwire
	  (half duplex), SSP, SSI, and PSP.  This driver framework should
	  work with most such devices and controllers.

if SPI

config SPI_DEBUG
	bool "Debug support for SPI drivers"
	depends on DEBUG_KERNEL
	help
	  Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
	  sysfs, and debugfs support in SPI controller and protocol drivers.

#
# MASTER side ... talking to discrete SPI slave chips including microcontrollers
#

config SPI_MASTER
#	bool "SPI Master Support"
	bool
	default SPI
	help
	  If your system has an master-capable SPI controller (which
	  provides the clock and chipselect), you can enable that
	  controller and the protocol drivers for the SPI slave chips
	  that are connected.

if SPI_MASTER

config SPI_MEM
	bool "SPI memory extension"
	help
	  Enable this option if you want to enable the SPI memory extension.
	  This extension is meant to simplify interaction with SPI memories
	  by providing a high-level interface to send memory-like commands.

comment "SPI Master Controller Drivers"

config SPI_AIROHA_SNFI
	tristate "Airoha SPI NAND Flash Interface"
	depends on ARCH_AIROHA || COMPILE_TEST
	depends on SPI_MASTER
	select REGMAP_MMIO
	help
	  This enables support for SPI-NAND mode on the Airoha NAND
	  Flash Interface found on Airoha ARM SoCs. This controller
	  is implemented as a SPI-MEM controller.

config SPI_ALTERA
	tristate "Altera SPI Controller platform driver"
	select SPI_ALTERA_CORE
	select REGMAP_MMIO
	help
	  This is the driver for the Altera SPI Controller.

config SPI_ALTERA_CORE
	tristate "Altera SPI Controller core code" if COMPILE_TEST
	select REGMAP
	help
	  "The core code for the Altera SPI Controller"

config SPI_ALTERA_DFL
	tristate "DFL bus driver for Altera SPI Controller"
	depends on FPGA_DFL
	select SPI_ALTERA_CORE
	help
	  This is a Device Feature List (DFL) bus driver for the
	  Altera SPI master controller.  The SPI master is connected
	  to a SPI slave to Avalon bridge in a Intel MAX BMC.

config SPI_AMLOGIC_SPIFC_A1
	tristate "Amlogic A1 SPIFC controller"
	depends on ARCH_MESON || COMPILE_TEST
	help
	  This enables master mode support for the SPIFC (SPI flash
	  controller) available in Amlogic A1 (A113L SoC).

config SPI_AR934X
	tristate "Qualcomm Atheros AR934X/QCA95XX SPI controller driver"
	depends on ATH79 || COMPILE_TEST
	help
	  This enables support for the SPI controller present on the
	  Qualcomm Atheros AR934X/QCA95XX SoCs.

config SPI_ATH79
	tristate "Atheros AR71XX/AR724X/AR913X SPI controller driver"
	depends on ATH79 || COMPILE_TEST
	select SPI_BITBANG
	help
	  This enables support for the SPI controller present on the
	  Atheros AR71XX/AR724X/AR913X SoCs.

config SPI_ARMADA_3700
	tristate "Marvell Armada 3700 SPI Controller"
	depends on (ARCH_MVEBU && OF) || COMPILE_TEST
	help
	  This enables support for the SPI controller present on the
	  Marvell Armada 3700 SoCs.

config SPI_ASPEED_SMC
	tristate "Aspeed flash controllers in SPI mode"
	depends on ARCH_ASPEED || COMPILE_TEST
	depends on OF
	help
	  This enables support for the Firmware Memory controller (FMC)
	  in the Aspeed AST2600, AST2500 and AST2400 SoCs when attached
	  to SPI NOR chips, and support for the SPI flash memory
	  controller (SPI) for the host firmware. The implementation
	  only supports SPI NOR.

config SPI_ATMEL
	tristate "Atmel SPI Controller"
	depends on ARCH_AT91 || COMPILE_TEST
	depends on OF
	help
	  This selects a driver for the Atmel SPI Controller, present on
	  many AT91 ARM chips.

config SPI_AT91_USART
	tristate "Atmel USART Controller SPI driver"
	depends on (ARCH_AT91 || COMPILE_TEST)
	depends on MFD_AT91_USART
	help
	  This selects a driver for the AT91 USART Controller as SPI Master,
	  present on AT91 and SAMA5 SoC series.

config SPI_ATMEL_QUADSPI
	tristate "Atmel Quad SPI Controller"
	depends on ARCH_AT91 || COMPILE_TEST
	depends on OF && HAS_IOMEM
	help
	  This enables support for the Quad SPI controller in master mode.
	  This driver does not support generic SPI. The implementation only
	  supports spi-mem interface.

config SPI_AU1550
	tristate "Au1550/Au1200/Au1300 SPI Controller"
	depends on MIPS_ALCHEMY
	select SPI_BITBANG
	help
	  If you say yes to this option, support will be included for the
	  PSC SPI controller found on Au1550, Au1200 and Au1300 series.

config SPI_AXI_SPI_ENGINE
	tristate "Analog Devices AXI SPI Engine controller"
	depends on HAS_IOMEM
	help
	  This enables support for the Analog Devices AXI SPI Engine SPI controller.
	  It is part of the SPI Engine framework that is used in some Analog Devices
	  reference designs for FPGAs.

config SPI_BCM2835
	tristate "BCM2835 SPI controller"
	depends on GPIOLIB
	depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
	help
	  This selects a driver for the Broadcom BCM2835 SPI master.

	  The BCM2835 contains two types of SPI master controller; the
	  "universal SPI master", and the regular SPI controller. This driver
	  is for the regular SPI controller. Slave mode operation is not also
	  not supported.

config SPI_BCM2835AUX
	tristate "BCM2835 SPI auxiliary controller"
	depends on ((ARCH_BCM2835 || ARCH_BRCMSTB) && GPIOLIB) || COMPILE_TEST
	help
	  This selects a driver for the Broadcom BCM2835 SPI aux master.

	  The BCM2835 contains two types of SPI master controller; the
	  "universal SPI master", and the regular SPI controller.
	  This driver is for the universal/auxiliary SPI controller.

config SPI_BCM63XX
	tristate "Broadcom BCM63xx SPI controller"
	depends on BCM63XX || BMIPS_GENERIC || COMPILE_TEST
	help
	  Enable support for the SPI controller on the Broadcom BCM63xx SoCs.

config SPI_BCM63XX_HSSPI
	tristate "Broadcom BCM63XX HS SPI controller driver"
	depends on BC