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_ALTERA
	tristate "Altera SPI Controller"
	select REGMAP_MMIO
	help
	  This is the driver for the Altera SPI Controller.

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_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 BCM63XX || BMIPS_GENERIC || ARCH_BCM_63XX || COMPILE_TEST
	help
	  This enables support for the High Speed SPI controller present on
	  newer Broadcom BCM63XX SoCs.

config SPI_BCM_QSPI
	tristate "Broadcom BSPI and MSPI controller support"
	depends on ARCH_BRCMSTB || ARCH_BCM || ARCH_BCM_IPROC || \
			BMIPS_GENERIC || COMPILE_TEST
	default ARCH_BCM_IPROC
	help
	  Enables support for the Broadcom SPI flash and MSPI controller.
	  Select this option for any one of BRCMSTB, iProc NSP and NS2 SoCs
	  based platforms. This driver works for both SPI master for SPI NOR
	  flash device as well as MSPI device.

config SPI_BITBANG
	tristate "Utilities for Bitbanging SPI masters"
	help
	  With a few GPIO pins, your system can bitbang the SPI protocol.
	  Select this to get SPI support through I/O pins (GPIO, parallel
	  port, etc).  Or, some systems' SPI master controller drivers use
	  this code to manage the per-word or per-transfer accesses to the
	  hardware shift registers.

	  This is library code, and is automatically selected by drivers that
	  need it.  You only need to select this explicitly to support driver
	  modules that aren't part of this kernel tree.

config SPI_BUTTERFLY
	tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
	depends on PARPORT
	select SPI_BITBANG
	help
	  This uses a custom parallel port cable to connect to an AVR
	  Butterfly <http://www.atmel.com/products/avr/butterfly>, an
	  inexpensive battery powered microcontroller evaluation board.
	  This same cable can be used to flash new firmware.

config SPI_CADENCE
	tristate "Cadence SPI controller"
	help
	  This selects the Cadence SPI controller master driver
	  used by Xilinx Zynq and ZynqMP.

config SPI_CADENCE_QUADSPI
	tristate "Cadence Quad SPI controller"
	depends on OF && (ARM || ARM64 || COMPILE_TEST)
	help
	  Enable support for the Cadence Quad SPI Flash controller.

	  Cadence QSPI is a specialized controller for connecting an SPI
	  Flash over 1/2/4-bit wide bus. Enable this option if you have a
	  device with a Cadence QSPI controller and want to access the
	  Flash as an MTD device.

config SPI_CLPS711X
	tristate "CLPS711X host SPI controller"
	depends on ARCH_CLPS711X || COMPILE_TEST
	help
	  This enables dedicated general purpose SPI/Microwire1-compatible
	  master mode interface (SSI1) for CLPS711X-based CPUs.

config SPI_COLDFIRE_QSPI
	tristate "Freescale Coldfire QSPI controller"
	depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
	help
	  This enables support for the Coldfire QSPI controller in master
	  mode.

config SPI_DAVINCI
	tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller"
	depends on ARCH_DAVINCI || ARCH_KEYSTONE
	select SPI_BITBANG
	help
	  SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.

config SPI_DESIGNWARE
	tristate "DesignWare SPI controller core support"
	imply SPI_MEM
	help
	  general driver for SPI controller core from DesignWare

if SPI_DESIGNWARE

config SPI_DW_DMA
	bool "DMA support for DW SPI controller"

config SPI_DW_PCI
	tristate "PCI interface driver for DW SPI core"
	depends on PCI

config SPI_DW_MMIO
	tristate "Memory-mapped io interface driver for DW SPI core"
	depends on HAS_IOMEM

config SPI_DW_BT1