drivers/spi/Kconfig

   1 #
   2 # SPI driver configuration
   3 #
   4 # NOTE:  the reason this doesn't show SPI slave support is mostly that
   5 # nobody's needed a slave side API yet.  The master-role API is not
   6 # fully appropriate there, so it'd need some thought to do well.
   7 #
   8 menuconfig SPI
   9         bool "SPI support"
  10         depends on HAS_IOMEM
  11         help
  12           The "Serial Peripheral Interface" is a low level synchronous
  13           protocol.  Chips that support SPI can have data transfer rates
  14           up to several tens of Mbit/sec.  Chips are addressed with a
  15           controller and a chipselect.  Most SPI slaves don't support
  16           dynamic device discovery; some are even write-only or read-only.
  17
  18           SPI is widely used by microcontrollers to talk with sensors,
  19           eeprom and flash memory, codecs and various other controller
  20           chips, analog to digital (and d-to-a) converters, and more.
  21           MMC and SD cards can be accessed using SPI protocol; and for
  22           DataFlash cards used in MMC sockets, SPI must always be used.
  23
  24           SPI is one of a family of similar protocols using a four wire
  25           interface (select, clock, data in, data out) including Microwire
  26           (half duplex), SSP, SSI, and PSP.  This driver framework should
  27           work with most such devices and controllers.
  28
  29 if SPI
  30
  31 config SPI_DEBUG
  32         boolean "Debug support for SPI drivers"
  33         depends on DEBUG_KERNEL
  34         help
  35           Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
  36           sysfs, and debugfs support in SPI controller and protocol drivers.
  37
  38 #
  39 # MASTER side ... talking to discrete SPI slave chips including microcontrollers
  40 #
  41
  42 config SPI_MASTER
  43 #       boolean "SPI Master Support"
  44         boolean
  45         default SPI
  46         help
  47           If your system has an master-capable SPI controller (which
  48           provides the clock and chipselect), you can enable that
  49           controller and the protocol drivers for the SPI slave chips
  50           that are connected.
  51
  52 if SPI_MASTER
  53
  54 comment "SPI Master Controller Drivers"
  55
  56 config SPI_ALTERA
  57         tristate "Altera SPI Controller"
  58         select SPI_BITBANG
  59         help
  60           This is the driver for the Altera SPI Controller.
  61
  62 config SPI_ATH79
  63         tristate "Atheros AR71XX/AR724X/AR913X SPI controller driver"
  64         depends on ATH79 && GPIOLIB
  65         select SPI_BITBANG
  66         help
  67           This enables support for the SPI controller present on the
  68           Atheros AR71XX/AR724X/AR913X SoCs.
  69
  70 config SPI_ATMEL
  71         tristate "Atmel SPI Controller"
  72         depends on HAS_DMA
  73         depends on (ARCH_AT91 || AVR32 || COMPILE_TEST)
  74         help
  75           This selects a driver for the Atmel SPI Controller, present on
  76           many AT32 (AVR32) and AT91 (ARM) chips.
  77
  78 config SPI_BCM2835
  79         tristate "BCM2835 SPI controller"
  80         depends on ARCH_BCM2835 || COMPILE_TEST
  81         help
  82           This selects a driver for the Broadcom BCM2835 SPI master.
  83
  84           The BCM2835 contains two types of SPI master controller; the
  85           "universal SPI master", and the regular SPI controller. This driver
  86           is for the regular SPI controller. Slave mode operation is not also
  87           not supported.
  88
  89 config SPI_BFIN5XX
  90         tristate "SPI controller driver for ADI Blackfin5xx"
  91         depends on BLACKFIN && !BF60x
  92         help
  93           This is the SPI controller master driver for Blackfin 5xx processor.
  94
  95 config SPI_ADI_V3
  96         tristate "SPI controller v3 for ADI"
  97         depends on BF60x
  98         help
  99           This is the SPI controller v3 master driver
 100           found on Blackfin 60x processor.
 101
 102 config SPI_BFIN_SPORT
 103         tristate "SPI bus via Blackfin SPORT"
 104         depends on BLACKFIN
 105         help
 106           Enable support for a SPI bus via the Blackfin SPORT peripheral.
 107
 108 config SPI_AU1550
 109         tristate "Au1550/Au1200/Au1300 SPI Controller"
 110         depends on MIPS_ALCHEMY
 111         select SPI_BITBANG
 112         help
 113           If you say yes to this option, support will be included for the
 114           PSC SPI controller found on Au1550, Au1200 and Au1300 series.
 115
 116 config SPI_BCM53XX
 117         tristate "Broadcom BCM53xx SPI controller"
 118         depends on ARCH_BCM_5301X
 119         depends on BCMA_POSSIBLE
 120         select BCMA
 121         help
 122           Enable support for the SPI controller on Broadcom BCM53xx ARM SoCs.
 123
 124 config SPI_BCM63XX
 125         tristate "Broadcom BCM63xx SPI controller"
 126         depends on BCM63XX
 127         help
 128           Enable support for the SPI controller on the Broadcom BCM63xx SoCs.
 129
 130 config SPI_BCM63XX_HSSPI
 131         tristate "Broadcom BCM63XX HS SPI controller driver"
 132         depends on BCM63XX || COMPILE_TEST
 133         help
 134           This enables support for the High Speed SPI controller present on
 135           newer Broadcom BCM63XX SoCs.
 136
 137 config SPI_BITBANG
 138         tristate "Utilities for Bitbanging SPI masters"
 139         help
 140           With a few GPIO pins, your system can bitbang the SPI protocol.
 141           Select this to get SPI support through I/O pins (GPIO, parallel
 142           port, etc).  Or, some systems' SPI master controller drivers use
 143           this code to manage the per-word or per-transfer accesses to the
 144           hardware shift registers.
 145
 146           This is library code, and is automatically selected by drivers that
 147           need it.  You only need to select this explicitly to support driver
 148           modules that aren't part of this kernel tree.
 149
 150 config SPI_BUTTERFLY
 151         tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
 152         depends on PARPORT
 153         select SPI_BITBANG
 154         help
 155           This uses a custom parallel port cable to connect to an AVR
 156           Butterfly <http://www.atmel.com/products/avr/butterfly>, an
 157           inexpensive battery powered microcontroller evaluation board.
 158           This same cable can be used to flash new firmware.
 159
 160 config SPI_CADENCE
 161         tristate "Cadence SPI controller"
 162         depends on ARM
 163         help
 164           This selects the Cadence SPI controller master driver
 165           used by Xilinx Zynq.
 166
 167 config SPI_CLPS711X
 168         tristate "CLPS711X host SPI controller"
 169         depends on ARCH_CLPS711X || COMPILE_TEST
 170         help
 171           This enables dedicated general purpose SPI/Microwire1-compatible
 172           master mode interface (SSI1) for CLPS711X-based CPUs.
 173
 174 config SPI_COLDFIRE_QSPI
 175         tristate "Freescale Coldfire QSPI controller"
 176         depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
 177         help
 178           This enables support for the Coldfire QSPI controller in master
 179           mode.
 180
 181 config SPI_DAVINCI
 182         tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller"
 183         depends on ARCH_DAVINCI || ARCH_KEYSTONE
 184         select SPI_BITBANG
 185         help
 186           SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.
 187
 188 config SPI_DLN2
 189        tristate "Diolan DLN-2 USB SPI adapter"
 190        depends on MFD_DLN2
 191        help
 192          If you say yes to this option, support will be included for Diolan
 193          DLN2, a USB to SPI interface.
 194
 195          This driver can also be built as a module.  If so, the module
 196          will be called spi-dln2.
 197
 198 config SPI_EFM32
 199         tristate "EFM32 SPI controller"
 200         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
 201         select SPI_BITBANG
 202         help
 203           Driver for the spi controller found on Energy Micro's EFM32 SoCs.
 204
 205 config SPI_EP93XX
 206         tristate "Cirrus Logic EP93xx SPI controller"
 207         depends on HAS_DMA
 208         depends on ARCH_EP93XX || COMPILE_TEST
 209         help
 210           This enables using the Cirrus EP93xx SPI controller in master
 211           mode.
 212
 213 config SPI_FALCON
 214         tristate "Falcon SPI controller support"
 215         depends on SOC_FALCON
 216         help
 217           The external bus unit (EBU) found on the FALC-ON SoC has SPI
 218           emulation that is designed for serial flash access. This driver
 219           has only been tested with m25p80 type chips. The hardware has no
 220           support for other types of SPI peripherals.
 221
 222 config SPI_GPIO
 223         tristate "GPIO-based bitbanging SPI Master"
 224         depends on GPIOLIB
 225         select SPI_BITBANG
 226         help
 227           This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
 228           interface to manage MOSI, MISO, SCK, and chipselect signals.  SPI
 229           slaves connected to a bus using this driver are configured as usual,
 230           except that the spi_board_info.controller_data holds the GPIO number
 231           for the chipselect used by this controller driver.
 232
 233           Note that this driver often won't achieve even 1 Mbit/sec speeds,
 234           making it unusually slow for SPI.  If your platform can inline
 235           GPIO operations, you should be able to leverage that for better
 236           speed with a custom version of this driver; see the source code.
 237
 238 config SPI_IMG_SPFI
 239         tristate "IMG SPFI controller"
 240         depends on MIPS || COMPILE_TEST
 241         help
 242           This enables support for the SPFI master controller found on
 243           IMG SoCs.
 244
 245 config SPI_IMX
 246         tristate "Freescale i.MX SPI controllers"
 247         depends on ARCH_MXC || COMPILE_TEST
 248         select SPI_BITBANG
 249         help
 250           This enables using the Freescale i.MX SPI controllers in master
 251           mode.
 252
 253 config SPI_LM70_LLP
 254         tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
 255         depends on PARPORT
 256         select SPI_BITBANG
 257         help
 258           This driver supports the NS LM70 LLP Evaluation Board,
 259           which interfaces to an LM70 temperature sensor using
 260           a parallel port.
 261
 262 config SPI_MPC52xx
 263         tristate "Freescale MPC52xx SPI (non-PSC) controller support"
 264         depends on PPC_MPC52xx
 265         help
 266           This drivers supports the MPC52xx SPI controller in master SPI
 267           mode.
 268
 269 config SPI_MPC52xx_PSC
 270         tristate "Freescale MPC52xx PSC SPI controller"
 271         depends on PPC_MPC52xx
 272         help
 273           This enables using the Freescale MPC52xx Programmable Serial
 274           Controller in master SPI mode.
 275
 276 config SPI_MPC512x_PSC
 277         tristate "Freescale MPC512x PSC SPI controller"
 278         depends on PPC_MPC512x
 279         help
 280           This enables using the Freescale MPC5121 Programmable Serial
 281           Controller in SPI master mode.
 282
 283 config SPI_FSL_LIB
 284         tristate
 285         depends on OF
 286
 287 config SPI_FSL_CPM
 288         tristate
 289         depends on FSL_SOC
 290
 291 config SPI_FSL_SPI
 292         tristate "Freescale SPI controller and Aeroflex Gaisler GRLIB SPI controller"
 293         depends on OF
 294         select SPI_FSL_LIB
 295         select SPI_FSL_CPM if FSL_SOC
 296         help
 297           This enables using the Freescale SPI controllers in master mode.
 298           MPC83xx platform uses the controller in cpu mode or CPM/QE mode.
 299           MPC8569 uses the controller in QE mode, MPC8610 in cpu mode.
 300           This also enables using the Aeroflex Gaisler GRLIB SPI controller in
 301           master mode.
 302
 303 config SPI_FSL_DSPI
 304         tristate "Freescale DSPI controller"
 305         select REGMAP_MMIO
 306         depends on SOC_VF610 || COMPILE_TEST
 307         help
 308           This enables support for the Freescale DSPI controller in master
 309           mode. VF610 platform uses the controller.
 310
 311 config SPI_FSL_ESPI
 312         tristate "Freescale eSPI controller"
 313         depends on FSL_SOC
 314         select SPI_FSL_LIB
 315         help
 316           This enables using the Freescale eSPI controllers in master mode.
 317           From MPC8536, 85xx platform uses the controller, and all P10xx,
 318           P20xx, P30xx,P40xx, P50xx uses this controller.
 319
 320 config SPI_MESON_SPIFC
 321         tristate "Amlogic Meson SPIFC controller"
 322         depends on ARCH_MESON || COMPILE_TEST
 323         select REGMAP_MMIO
 324         help
 325           This enables master mode support for the SPIFC (SPI flash
 326           controller) available in Amlogic Meson SoCs.
 327
 328 config SPI_OC_TINY
 329         tristate "OpenCores tiny SPI"
 330         depends on GPIOLIB
 331         select SPI_BITBANG
 332         help
 333           This is the driver for OpenCores tiny SPI master controller.
 334
 335 config SPI_OCTEON
 336         tristate "Cavium OCTEON SPI controller"
 337         depends on CAVIUM_OCTEON_SOC
 338         help
 339           SPI host driver for the hardware found on some Cavium OCTEON
 340           SOCs.
 341
 342 config SPI_OMAP_UWIRE
 343         tristate "OMAP1 MicroWire"
 344         depends on ARCH_OMAP1
 345         select SPI_BITBANG
 346         help
 347           This hooks up to the MicroWire controller on OMAP1 chips.
 348
 349 config SPI_OMAP24XX
 350         tristate "McSPI driver for OMAP"
 351         depends on HAS_DMA
 352         depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
 353         depends on ARCH_OMAP2PLUS || COMPILE_TEST
 354         help
 355           SPI master controller for OMAP24XX and later Multichannel SPI
 356           (McSPI) modules.
 357
 358 config SPI_TI_QSPI
 359         tristate "DRA7xxx QSPI controller support"
 360         depends on ARCH_OMAP2PLUS || COMPILE_TEST
 361         help
 362           QSPI master controller for DRA7xxx used for flash devices.
 363           This device supports single, dual and quad read support, while
 364           it only supports single write mode.
 365
 366 config SPI_OMAP_100K
 367         tristate "OMAP SPI 100K"
 368         depends on ARCH_OMAP850 || ARCH_OMAP730 || COMPILE_TEST
 369         help
 370           OMAP SPI 100K master controller for omap7xx boards.
 371
 372 config SPI_ORION
 373         tristate "Orion SPI master"
 374         depends on PLAT_ORION || COMPILE_TEST
 375         help
 376           This enables using the SPI master controller on the Orion chips.
 377
 378 config SPI_PL022
 379         tristate "ARM AMBA PL022 SSP controller"
 380         depends on ARM_AMBA
 381         default y if MACH_U300
 382         default y if ARCH_REALVIEW
 383         default y if INTEGRATOR_IMPD1
 384         default y if ARCH_VERSATILE
 385         help
 386           This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
 387           controller. If you have an embedded system with an AMBA(R)
 388           bus and a PL022 controller, say Y or M here.
 389
 390 config SPI_PPC4xx
 391         tristate "PPC4xx SPI Controller"
 392         depends on PPC32 && 4xx
 393         select SPI_BITBANG
 394         help
 395           This selects a driver for the PPC4xx SPI Controller.
 396
 397 config SPI_PXA2XX_PXADMA
 398         bool "PXA2xx SSP legacy PXA DMA API support"
 399         depends on SPI_PXA2XX && ARCH_PXA
 400         help
 401           Enable PXA private legacy DMA API support. Note that this is
 402           deprecated in favor of generic DMA engine API.
 403
 404 config SPI_PXA2XX_DMA
 405         def_bool y
 406         depends on SPI_PXA2XX && !SPI_PXA2XX_PXADMA
 407
 408 config SPI_PXA2XX
 409         tristate "PXA2xx SSP SPI master"
 410         depends on (ARCH_PXA || PCI || ACPI)
 411         select PXA_SSP if ARCH_PXA
 412         help
 413           This enables using a PXA2xx or Sodaville SSP port as a SPI master
 414           controller. The driver can be configured to use any SSP port and
 415           additional documentation can be found a Documentation/spi/pxa2xx.
 416
 417 config SPI_PXA2XX_PCI
 418         def_tristate SPI_PXA2XX && PCI && COMMON_CLK
 419
 420 config SPI_ROCKCHIP
 421         tristate "Rockchip SPI controller driver"
 422         depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
 423         help
 424           This selects a driver for Rockchip SPI controller.
 425
 426           If you say yes to this option, support will be included for
 427           RK3066, RK3188 and RK3288 families of SPI controller.
 428           Rockchip SPI controller support DMA transport and PIO mode.
 429           The main usecase of this controller is to use spi flash as boot
 430           device.
 431
 432 config SPI_RSPI
 433         tristate "Renesas RSPI/QSPI controller"
 434         depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 435         help
 436           SPI driver for Renesas RSPI and QSPI blocks.
 437
 438 config SPI_QUP
 439         tristate "Qualcomm SPI controller with QUP interface"
 440         depends on ARCH_QCOM || (ARM && COMPILE_TEST)
 441         help
 442           Qualcomm Universal Peripheral (QUP) core is an AHB slave that
 443           provides a common data path (an output FIFO and an input FIFO)
 444           for serial peripheral interface (SPI) mini-core. SPI in master
 445           mode supports up to 50MHz, up to four chip selects, programmable
 446           data path from 4 bits to 32 bits and numerous protocol variants.
 447
 448           This driver can also be built as a module.  If so, the module
 449           will be called spi_qup.
 450
 451 config SPI_S3C24XX
 452         tristate "Samsung S3C24XX series SPI"
 453         depends on ARCH_S3C24XX
 454         select SPI_BITBANG
 455         help
 456           SPI driver for Samsung S3C24XX series ARM SoCs
 457
 458 config SPI_S3C24XX_FIQ
 459         bool "S3C24XX driver with FIQ pseudo-DMA"
 460         depends on SPI_S3C24XX
 461         select FIQ
 462         help
 463           Enable FIQ support for the S3C24XX SPI driver to provide pseudo
 464           DMA by using the fast-interrupt request framework, This allows
 465           the driver to get DMA-like performance when there are either
 466           no free DMA channels, or when doing transfers that required both
 467           TX and RX data paths.
 468
 469 config SPI_S3C64XX
 470         tristate "Samsung S3C64XX series type SPI"
 471         depends on (PLAT_SAMSUNG || ARCH_EXYNOS)
 472         help
 473           SPI driver for Samsung S3C64XX and newer SoCs.
 474
 475 config SPI_SC18IS602
 476         tristate "NXP SC18IS602/602B/603 I2C to SPI bridge"
 477         depends on I2C
 478         help
 479           SPI driver for NXP SC18IS602/602B/603 I2C to SPI bridge.
 480
 481 config SPI_SH_MSIOF
 482         tristate "SuperH MSIOF SPI controller"
 483         depends on HAVE_CLK && HAS_DMA
 484         depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 485         help
 486           SPI driver for SuperH and SH Mobile MSIOF blocks.
 487
 488 config SPI_SH
 489         tristate "SuperH SPI controller"
 490         depends on SUPERH || COMPILE_TEST
 491         help
 492           SPI driver for SuperH SPI blocks.
 493
 494 config SPI_SH_SCI
 495         tristate "SuperH SCI SPI controller"
 496         depends on SUPERH
 497         select SPI_BITBANG
 498         help
 499           SPI driver for SuperH SCI blocks.
 500
 501 config SPI_SH_HSPI
 502         tristate "SuperH HSPI controller"
 503         depends on ARCH_SHMOBILE || COMPILE_TEST
 504         help
 505           SPI driver for SuperH HSPI blocks.
 506
 507 config SPI_SIRF
 508         tristate "CSR SiRFprimaII SPI controller"
 509         depends on SIRF_DMA
 510         select SPI_BITBANG
 511         help
 512           SPI driver for CSR SiRFprimaII SoCs
 513
 514 config SPI_ST_SSC4
 515         tristate "STMicroelectronics SPI SSC-based driver"
 516         depends on ARCH_STI
 517         help
 518           STMicroelectronics SoCs support for SPI. If you say yes to
 519           this option, support will be included for the SSC driven SPI.
 520
 521 config SPI_SUN4I
 522         tristate "Allwinner A10 SoCs SPI controller"
 523         depends on ARCH_SUNXI || COMPILE_TEST
 524         help
 525           SPI driver for Allwinner sun4i, sun5i and sun7i SoCs
 526
 527 config SPI_SUN6I
 528         tristate "Allwinner A31 SPI controller"
 529         depends on ARCH_SUNXI || COMPILE_TEST
 530         depends on RESET_CONTROLLER
 531         help
 532           This enables using the SPI controller on the Allwinner A31 SoCs.
 533
 534 config SPI_MXS
 535         tristate "Freescale MXS SPI controller"
 536         depends on ARCH_MXS
 537         select STMP_DEVICE
 538         help
 539           SPI driver for Freescale MXS devices.
 540
 541 config SPI_TEGRA114
 542         tristate "NVIDIA Tegra114 SPI Controller"
 543         depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
 544         depends on RESET_CONTROLLER && HAS_DMA
 545         help
 546           SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller
 547           is different than the older SoCs SPI controller and also register interface
 548           get changed with this controller.
 549
 550 config SPI_TEGRA20_SFLASH
 551         tristate "Nvidia Tegra20 Serial flash Controller"
 552         depends on ARCH_TEGRA || COMPILE_TEST
 553         depends on RESET_CONTROLLER
 554         help
 555           SPI driver for Nvidia Tegra20 Serial flash Controller interface.
 556           The main usecase of this controller is to use spi flash as boot
 557           device.
 558
 559 config SPI_TEGRA20_SLINK
 560         tristate "Nvidia Tegra20/Tegra30 SLINK Controller"
 561         depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
 562         depends on RESET_CONTROLLER && HAS_DMA
 563         help
 564           SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface.
 565
 566 config SPI_TOPCLIFF_PCH
 567         tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI"
 568         depends on PCI && (X86_32 || COMPILE_TEST)
 569         help
 570           SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
 571           used in some x86 embedded processors.
 572
 573           This driver also supports the ML7213/ML7223/ML7831, a companion chip
 574           for the Atom E6xx series and compatible with the Intel EG20T PCH.
 575
 576 config SPI_TXX9
 577         tristate "Toshiba TXx9 SPI controller"
 578         depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST)
 579         help
 580           SPI driver for Toshiba TXx9 MIPS SoCs
 581
 582 config SPI_XCOMM
 583         tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver"
 584         depends on I2C
 585         help
 586           Support for the SPI-I2C bridge found on the Analog Devices
 587           AD-FMCOMMS1-EBZ board.
 588
 589 config SPI_XILINX
 590         tristate "Xilinx SPI controller common module"
 591         depends on HAS_IOMEM
 592         select SPI_BITBANG
 593         help
 594           This exposes the SPI controller IP from the Xilinx EDK.
 595
 596           See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
 597           Product Specification document (DS464) for hardware details.
 598
 599           Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
 600
 601 config SPI_XTENSA_XTFPGA
 602         tristate "Xtensa SPI controller for xtfpga"
 603         depends on (XTENSA && XTENSA_PLATFORM_XTFPGA) || COMPILE_TEST
 604         select SPI_BITBANG
 605         help
 606           SPI driver for xtfpga SPI master controller.
 607
 608           This simple SPI master controller is built into xtfpga bitstreams
 609           and is used to control daughterboard audio codec. It always transfers
 610           16 bit words in SPI mode 0, automatically asserting CS on transfer
 611           start and deasserting on end.
 612
 613 config SPI_NUC900
 614         tristate "Nuvoton NUC900 series SPI"
 615         depends on ARCH_W90X900
 616         select SPI_BITBANG
 617         help
 618           SPI driver for Nuvoton NUC900 series ARM SoCs
 619
 620 #
 621 # Add new SPI master controllers in alphabetical order above this line
 622 #
 623
 624 config SPI_DESIGNWARE
 625         tristate "DesignWare SPI controller core support"
 626         help
 627           general driver for SPI controller core from DesignWare
 628
 629 config SPI_DW_PCI
 630         tristate "PCI interface driver for DW SPI core"
 631         depends on SPI_DESIGNWARE && PCI
 632
 633 config SPI_DW_MID_DMA
 634         bool "DMA support for DW SPI controller on Intel MID platform"
 635         depends on SPI_DW_PCI && INTEL_MID_DMAC
 636
 637 config SPI_DW_MMIO
 638         tristate "Memory-mapped io interface driver for DW SPI core"
 639         depends on SPI_DESIGNWARE
 640
 641 #
 642 # There are lots of SPI device types, with sensors and memory
 643 # being probably the most widely used ones.
 644 #
 645 comment "SPI Protocol Masters"
 646
 647 config SPI_SPIDEV
 648         tristate "User mode SPI device driver support"
 649         help
 650           This supports user mode SPI protocol drivers.
 651
 652           Note that this application programming interface is EXPERIMENTAL
 653           and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
 654
 655 config SPI_TLE62X0
 656         tristate "Infineon TLE62X0 (for power switching)"
 657         depends on SYSFS
 658         help
 659           SPI driver for Infineon TLE62X0 series line driver chips,
 660           such as the TLE6220, TLE6230 and TLE6240.  This provides a
 661           sysfs interface, with each line presented as a kind of GPIO
 662           exposing both switch control and diagnostic feedback.
 663
 664 #
 665 # Add new SPI protocol masters in alphabetical order above this line
 666 #
 667
 668 endif # SPI_MASTER
 669
 670 # (slave support would go here)
 671
 672 endif # SPI