linux_kernel/drivers/spi/Kconfig

#
# SPI driver configuration
#
# NOTE:  the reason this doesn't show SPI slave support is mostly that
# nobody's needed a slave side API yet.  The master-role API is not
# fully appropriate there, so it'd need some thought to do well.
#
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
	boolean "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
#	boolean "SPI Master Support"
	boolean
	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

comment "SPI Master Controller Drivers"

config SPI_ALTERA
	tristate "Altera SPI Controller"
	select SPI_BITBANG
	help
	  This is the driver for the Altera SPI Controller.

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

config SPI_ATMEL
	tristate "Atmel SPI Controller"
	depends on (ARCH_AT91 || AVR32 || COMPILE_TEST)
	help
	  This selects a driver for the Atmel SPI Controller, present on
	  many AT32 (AVR32) and AT91 (ARM) chips.

config SPI_BCM2835
	tristate "BCM2835 SPI controller"
	depends on ARCH_BCM2835 || 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_BFIN5XX
	tristate "SPI controller driver for ADI Blackfin5xx"
	depends on BLACKFIN && !BF60x
	help
	  This is the SPI controller master driver for Blackfin 5xx processor.

config SPI_ADI_V3
	tristate "SPI controller v3 for ADI"
	depends on BF60x
	help
	  This is the SPI controller v3 master driver
	  found on Blackfin 60x processor.

config SPI_BFIN_SPORT
	tristate "SPI bus via Blackfin SPORT"
	depends on BLACKFIN
	help
	  Enable support for a SPI bus via the Blackfin SPORT peripheral.

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_BCM63XX
	tristate "Broadcom BCM63xx SPI controller"
	depends on BCM63XX
	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 || COMPILE_TEST
	help
	  This enables support for the High Speed SPI controller present on
	  newer Broadcom BCM63XX SoCs.

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"
	depends on ARM
	help
	  This selects the Cadence SPI controller master driver
	  used by Xilinx Zynq.

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_EFM32
	tristate "EFM32 SPI controller"
	depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
	select SPI_BITBANG
	help
	  Driver for the spi controller found on Energy Micro's EFM32 SoCs.

config SPI_EP93XX
	tristate "Cirrus Logic EP93xx SPI controller"
	depends on ARCH_EP93XX || COMPILE_TEST
	help
	  This enables using the Cirrus EP93xx SPI controller in master
	  mode.

config SPI_FALCON
	tristate "Falcon SPI controller support"
	depends on SOC_FALCON
	help
	  The external bus unit (EBU) found on the FALC-ON SoC has SPI
	  emulation that is designed for serial flash access. This driver
	  has only been tested with m25p80 type chips. The hardware has no
	  support for other types of SPI peripherals.

config SPI_GPIO
	tristate "GPIO-based bitbanging SPI Master"
	depends on GPIOLIB
	select SPI_BITBANG
	help
	  This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
	  interface to manage MOSI, MISO, SCK, and chipselect signals.  SPI
	  slaves connected to a bus using this driver are configured as usual,
	  except that the spi_board_info.controller_data holds the GPIO number
	  for the chipselect used by this controller driver.

	  Note that this driver often won't achieve even 1 Mbit/sec speeds,
	  making it unusually slow for SPI.  If your platform can inline
	  GPIO operations, you should be able to leverage that for better
	  speed with a custom version of this driver; see the source code.

config SPI_IMX
	tristate "Freescale i.MX SPI controllers"
	depends on ARCH_MXC || COMPILE_TEST
	select SPI_BITBANG
	help
	  This enables using the Freescale i.MX SPI controllers in master
	  mode.

config SPI_LM70_LLP
	tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
	depends on PARPORT
	select SPI_BITBANG
	help
	  This driver supports the NS LM70 LLP Evaluation Board,
	  which interfaces to an LM70 temperature sensor using
	  a parallel port.

config SPI_MPC52xx
	tristate "Freescale MPC52xx SPI (non-PSC) controller support"
	depends on PPC_MPC52xx
	help
	  This drivers supports the MPC52xx SPI controller in master SPI
	  mode.

config SPI_MPC52xx_PSC
	tristate "Freescale MPC52xx PSC SPI controller"
	depends on PPC_MPC52xx
	help
	  This enables using the Freescale MPC52xx Programmable Serial
	  Controller in master SPI mode.

config SPI_MPC512x_PSC
	tristate "Freescale MPC512x PSC SPI controller"
	depends on PPC_MPC512x
	help
	  This enables using the Freescale MPC5121 Programmable Serial
	  Controller in SPI master mode.

config SPI_FSL_LIB
	tristate
	depends on OF

config SPI_FSL_CPM
	tristate
	depends on FSL_SOC

config SPI_FSL_SPI
	bool "Freescale SPI controller and Aeroflex Gaisler GRLIB SPI controller"
	depends on OF
	select SPI_FSL_LIB
	select SPI_FSL_CPM if FSL_SOC
	help
	  This enables using the Freescale SPI controllers in master mode.
	  MPC83xx platform uses the controller in cpu mode or CPM/QE mode.
	  MPC8569 uses the controller in QE mode, MPC8610 in cpu mode.
	  This also enables using the Aeroflex Gaisler GRLIB SPI controller in
	  master mode.

config SPI_FSL_DSPI
	tristate "Freescale DSPI controller"
	select SPI_BITBANG
	select REGMAP_MMIO
	depends on SOC_VF610 || COMPILE_TEST
	help
	  This enables support for the Freescale DSPI controller in master
	  mode. VF610 platform uses the controller.

config SPI_FSL_ESPI
	bool "Freescale eSPI controller"
	depends on FSL_SOC
	select SPI_FSL_LIB
	help
	  This enables using the Freescale eSPI controllers in master mode.
	  From MPC8536, 85xx platform uses the controller, and all P10xx,
	  P20xx, P30xx,P40xx, P50xx uses this controller.

config SPI_OC_TINY
	tristate "OpenCores tiny SPI"
	depends on GPIOLIB
	select SPI_BITBANG
	help
	  This is the driver for OpenCores tiny SPI master controller.

config SPI_OCTEON
	tristate "Cavium OCTEON SPI controller"
	depends on CAVIUM_OCTEON_SOC
	help
	  SPI host driver for the hardware found on some Cavium OCTEON
	  SOCs.

config SPI_OMAP_UWIRE
	tristate "OMAP1 MicroWire"
	depends on ARCH_OMAP1
	select SPI_BITBANG
	help
	  This hooks up to the MicroWire controller on OMAP1 chips.

config SPI_OMAP24XX
	tristate "McSPI driver for OMAP"
	depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
	depends on ARCH_OMAP2PLUS || COMPILE_TEST
	help
	  SPI master controller for OMAP24XX and later Multichannel SPI
	  (McSPI) modules.

config SPI_TI_QSPI
	tristate "DRA7xxx QSPI controller support"
	depends on ARCH_OMAP2PLUS || COMPILE_TEST
	help
	  QSPI master controller for DRA7xxx used for flash devices.
	  This device supports single, dual and quad read support, while
	  it only supports single write mode.

config SPI_OMAP_100K
	tristate "OMAP SPI 100K"
	depends on ARCH_OMAP850 || ARCH_OMAP730 || COMPILE_TEST
	help
	  OMAP SPI 100K master controller for omap7xx boards.

config SPI_ORION
	tristate "Orion SPI master"
	depends on PLAT_ORION || COMPILE_TEST
	help
	  This enables using the SPI master controller on the Orion chips.

config SPI_PL022
	tristate "ARM AMBA PL022 SSP controller"
	depends on ARM_AMBA
	default y if MACH_U300
	default y if ARCH_REALVIEW
	default y if INTEGRATOR_IMPD1
	default y if ARCH_VERSATILE
	help
	  This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
	  controller. If you have an embedded system with an AMBA(R)
	  bus and a PL022 controller, say Y or M here.

config SPI_PPC4xx
	tristate "PPC4xx SPI Controller"
	depends on PPC32 && 4xx
	select SPI_BITBANG
	help
	  This selects a driver for the PPC4xx SPI Controller.

config SPI_PXA2XX_PXADMA
	bool "PXA2xx SSP legacy PXA DMA API support"
	depends on SPI_PXA2XX && ARCH_PXA
	help
	  Enable PXA private legacy DMA API support. Note that this is
	  deprecated in favor of generic DMA engine API.

config SPI_PXA2XX_DMA
	def_bool y
	depends on SPI_PXA2XX && !SPI_PXA2XX_PXADMA

config SPI_PXA2XX
	tristate "PXA2xx SSP SPI master"
	depends on (ARCH_PXA || PCI || ACPI)
	select PXA_SSP if ARCH_PXA
	help
	  This enables using a PXA2xx or Sodaville SSP port as a SPI master
	  controller. The driver can be configured to use any SSP port and
	  additional documentation can be found a Documentation/spi/pxa2xx.

config SPI_PXA2XX_PCI
	def_tristate SPI_PXA2XX && PCI

config SPI_RSPI
	tristate "Renesas RSPI/QSPI controller"
	depends on (SUPERH && SH_DMAE_BASE) || ARCH_SHMOBILE
	help
	  SPI driver for Renesas RSPI and QSPI blocks.

config SPI_QUP
	tristate "Qualcomm SPI controller with QUP interface"
	depends on ARCH_QCOM || (ARM && COMPILE_TEST)
	help
	  Qualcomm Universal Peripheral (QUP) core is an AHB slave that
	  provides a common data path (an output FIFO and an input FIFO)
	  for serial peripheral interface (SPI) mini-core. SPI in master
	  mode supports up to 50MHz, up to four chip selects, programmable
	  data path from 4 bits to 32 bits and numerous protocol variants.

	  This driver can also be built as a module.  If so, the module
	  will be called spi_qup.

config SPI_S3C24XX
	tristate "Samsung S3C24XX series SPI"
	depends on ARCH_S3C24XX
	select SPI_BITBANG
	help
	  SPI driver for Samsung S3C24XX series ARM SoCs

config SPI_S3C24XX_FIQ
	bool "S3C24XX driver with FIQ pseudo-DMA"
	depends on SPI_S3C24XX
	select FIQ
	help
	  Enable FIQ support for the S3C24XX SPI driver to provide pseudo
	  DMA by using the fast-interrupt request framework, This allows
	  the driver to get DMA-like performance when there are either
	  no free DMA channels, or when doing transfers that required both
	  TX and RX data paths.

config SPI_S3C64XX
	tristate "Samsung S3C64XX series type SPI"
	depends on PLAT_SAMSUNG
	select S3C64XX_PL080 if ARCH_S3C64XX
	help
	  SPI driver for Samsung S3C64XX and newer SoCs.

config SPI_SC18IS602
	tristate "NXP SC18IS602/602B/603 I2C to SPI bridge"
	depends on I2C
	help
	  SPI driver for NXP SC18IS602/602B/603 I2C to SPI bridge.

config SPI_SH_MSIOF
	tristate "SuperH MSIOF SPI controller"
	depends on HAVE_CLK
	depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
	help
	  SPI driver for SuperH and SH Mobile MSIOF blocks.

config SPI_SH
	tristate "SuperH SPI controller"
	depends on SUPERH || COMPILE_TEST
	help
	  SPI driver for SuperH SPI blocks.

config SPI_SH_SCI
	tristate "SuperH SCI SPI controller"
	depends on SUPERH
	select SPI_BITBANG
	help
	  SPI driver for SuperH SCI blocks.

config SPI_SH_HSPI
	tristate "SuperH HSPI controller"
	depends on ARCH_SHMOBILE || COMPILE_TEST
	help
	  SPI driver for SuperH HSPI blocks.

config SPI_SIRF
	tristate "CSR SiRFprimaII SPI controller"
	depends on SIRF_DMA
	select SPI_BITBANG
	help
	  SPI driver for CSR SiRFprimaII SoCs

config SPI_SUN4I
	tristate "Allwinner A10 SoCs SPI controller"
	depends on ARCH_SUNXI || COMPILE_TEST
	help
	  SPI driver for Allwinner sun4i, sun5i and sun7i SoCs

config SPI_SUN6I
	tristate "Allwinner A31 SPI controller"
	depends on ARCH_SUNXI || COMPILE_TEST
	depends on RESET_CONTROLLER
	help
	  This enables using the SPI controller on the Allwinner A31 SoCs.

config SPI_MXS
	tristate "Freescale MXS SPI controller"
	depends on ARCH_MXS
	select STMP_DEVICE
	help
	  SPI driver for Freescale MXS devices.

config SPI_TEGRA114
	tristate "NVIDIA Tegra114 SPI Controller"
	depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
	depends on RESET_CONTROLLER
	help
	  SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller
	  is different than the older SoCs SPI controller and also register interface
	  get changed with this controller.

config SPI_TEGRA20_SFLASH
	tristate "Nvidia Tegra20 Serial flash Controller"
	depends on ARCH_TEGRA || COMPILE_TEST
	depends on RESET_CONTROLLER
	help
	  SPI driver for Nvidia Tegra20 Serial flash Controller interface.
	  The main usecase of this controller is to use spi flash as boot
	  device.

config SPI_TEGRA20_SLINK
	tristate "Nvidia Tegra20/Tegra30 SLINK Controller"
	depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
	depends on RESET_CONTROLLER
	help
	  SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface.

config SPI_TOPCLIFF_PCH
	tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI"
	depends on PCI && (X86_32 || COMPILE_TEST)
	help
	  SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
	  used in some x86 embedded processors.

	  This driver also supports the ML7213/ML7223/ML7831, a companion chip
	  for the Atom E6xx series and compatible with the Intel EG20T PCH.

config SPI_TXX9
	tristate "Toshiba TXx9 SPI controller"
	depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST)
	help
	  SPI driver for Toshiba TXx9 MIPS SoCs

config SPI_XCOMM
	tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver"
	depends on I2C
	help
	  Support for the SPI-I2C bridge found on the Analog Devices
	  AD-FMCOMMS1-EBZ board.

config SPI_XILINX
	tristate "Xilinx SPI controller common module"
	depends on HAS_IOMEM
	select SPI_BITBANG
	help
	  This exposes the SPI controller IP from the Xilinx EDK.

	  See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
	  Product Specification document (DS464) for hardware details.

	  Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"

config SPI_XTENSA_XTFPGA
	tristate "Xtensa SPI controller for xtfpga"
	depends on (XTENSA && XTENSA_PLATFORM_XTFPGA) || COMPILE_TEST
	select SPI_BITBANG
	help
	  SPI driver for xtfpga SPI master controller.

	  This simple SPI master controller is built into xtfpga bitstreams
	  and is used to control daughterboard audio codec. It always transfers
	  16 bit words in SPI mode 0, automatically asserting CS on transfer
	  start and deasserting on end.


config SPI_NUC900
	tristate "Nuvoton NUC900 series SPI"
	depends on ARCH_W90X900
	select SPI_BITBANG
	help
	  SPI driver for Nuvoton NUC900 series ARM SoCs

#
# Add new SPI master controllers in alphabetical order above this line
#

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

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

config SPI_DW_MID_DMA
	bool "DMA support for DW SPI controller on Intel Moorestown platform"
	depends on SPI_DW_PCI && INTEL_MID_DMAC

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

#
# There are lots of SPI device types, with sensors and memory
# being probably the most widely used ones.
#
comment "SPI Protocol Masters"

config SPI_SPIDEV
	tristate "User mode SPI device driver support"
	help
	  This supports user mode SPI protocol drivers.

	  Note that this application programming interface is EXPERIMENTAL
	  and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.

config SPI_TLE62X0
	tristate "Infineon TLE62X0 (for power switching)"
	depends on SYSFS
	help
	  SPI driver for Infineon TLE62X0 series line driver chips,
	  such as the TLE6220, TLE6230 and TLE6240.  This provides a
	  sysfs interface, with each line presented as a kind of GPIO
	  exposing both switch control and diagnostic feedback.

#
# Add new SPI protocol masters in alphabetical order above this line
#

endif # SPI_MASTER

# (slave support would go here)

endif # SPI