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         bool "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 #       bool "SPI Master Support"
  44         bool
  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         help
 163           This selects the Cadence SPI controller master driver
 164           used by Xilinx Zynq and ZynqMP.
 165
 166 config SPI_CLPS711X
 167         tristate "CLPS711X host SPI controller"
 168         depends on ARCH_CLPS711X || COMPILE_TEST
 169         help
 170           This enables dedicated general purpose SPI/Microwire1-compatible
 171           master mode interface (SSI1) for CLPS711X-based CPUs.
 172
 173 config SPI_COLDFIRE_QSPI
 174         tristate "Freescale Coldfire QSPI controller"
 175         depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
 176         help
 177           This enables support for the Coldfire QSPI controller in master
 178           mode.
 179
 180 config SPI_DAVINCI
 181         tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller"
 182         depends on ARCH_DAVINCI || ARCH_KEYSTONE
 183         select SPI_BITBANG
 184         help
 185           SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.
 186
 187 config SPI_DLN2
 188        tristate "Diolan DLN-2 USB SPI adapter"
 189        depends on MFD_DLN2
 190        help
 191          If you say yes to this option, support will be included for Diolan
 192          DLN2, a USB to SPI interface.
 193
 194          This driver can also be built as a module.  If so, the module
 195          will be called spi-dln2.
 196
 197 config SPI_EFM32
 198         tristate "EFM32 SPI controller"
 199         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
 200         select SPI_BITBANG
 201         help
 202           Driver for the spi controller found on Energy Micro's EFM32 SoCs.
 203
 204 config SPI_EP93XX
 205         tristate "Cirrus Logic EP93xx SPI controller"
 206         depends on HAS_DMA
 207         depends on ARCH_EP93XX || COMPILE_TEST
 208         help
 209           This enables using the Cirrus EP93xx SPI controller in master
 210           mode.
 211
 212 config SPI_FALCON
 213         tristate "Falcon SPI controller support"
 214         depends on SOC_FALCON
 215         help
 216           The external bus unit (EBU) found on the FALC-ON SoC has SPI
 217           emulation that is designed for serial flash access. This driver
 218           has only been tested with m25p80 type chips. The hardware has no
 219           support for other types of SPI peripherals.
 220
 221 config SPI_GPIO
 222         tristate "GPIO-based bitbanging SPI Master"
 223         depends on GPIOLIB
 224         select SPI_BITBANG
 225         help
 226           This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
 227           interface to manage MOSI, MISO, SCK, and chipselect signals.  SPI
 228           slaves connected to a bus using this driver are configured as usual,
 229           except that the spi_board_info.controller_data holds the GPIO number
 230           for the chipselect used by this controller driver.
 231
 232           Note that this driver often won't achieve even 1 Mbit/sec speeds,
 233           making it unusually slow for SPI.  If your platform can inline
 234           GPIO operations, you should be able to leverage that for better
 235           speed with a custom version of this driver; see the source code.
 236
 237 config SPI_IMG_SPFI
 238         tristate "IMG SPFI controller"
 239         depends on MIPS || COMPILE_TEST
 240         help
 241           This enables support for the SPFI master controller found on
 242           IMG SoCs.
 243
 244 config SPI_IMX
 245         tristate "Freescale i.MX SPI controllers"
 246         depends on ARCH_MXC || COMPILE_TEST
 247         select SPI_BITBANG
 248         help
 249           This enables using the Freescale i.MX SPI controllers in master
 250           mode.
 251
 252 config SPI_LM70_LLP
 253         tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
 254         depends on PARPORT
 255         select SPI_BITBANG
 256         help
 257           This driver supports the NS LM70 LLP Evaluation Board,
 258           which interfaces to an LM70 temperature sensor using
 259           a parallel port.
 260
 261 config SPI_MPC52xx
 262         tristate "Freescale MPC52xx SPI (non-PSC) controller support"
 263         depends on PPC_MPC52xx
 264         help
 265           This drivers supports the MPC52xx SPI controller in master SPI
 266           mode.
 267
 268 config SPI_MPC52xx_PSC
 269         tristate "Freescale MPC52xx PSC SPI controller"
 270         depends on PPC_MPC52xx
 271         help
 272           This enables using the Freescale MPC52xx Programmable Serial
 273           Controller in master SPI mode.
 274
 275 config SPI_MPC512x_PSC
 276         tristate "Freescale MPC512x PSC SPI controller"
 277         depends on PPC_MPC512x
 278         help
 279           This enables using the Freescale MPC5121 Programmable Serial
 280           Controller in SPI master mode.
 281
 282 config SPI_FSL_LIB
 283         tristate
 284         depends on OF
 285
 286 config SPI_FSL_CPM
 287         tristate
 288         depends on FSL_SOC
 289
 290 config SPI_FSL_SPI
 291         tristate "Freescale SPI controller and Aeroflex Gaisler GRLIB SPI controller"
 292         depends on OF
 293         select SPI_FSL_LIB
 294         select SPI_FSL_CPM if FSL_SOC
 295         help
 296           This enables using the Freescale SPI controllers in master mode.
 297           MPC83xx platform uses the controller in cpu mode or CPM/QE mode.
 298           MPC8569 uses the controller in QE mode, MPC8610 in cpu mode.
 299           This also enables using the Aeroflex Gaisler GRLIB SPI controller in
 300           master mode.
 301
 302 config SPI_FSL_DSPI
 303         tristate "Freescale DSPI controller"
 304         select REGMAP_MMIO
 305         depends on SOC_VF610 || COMPILE_TEST
 306         help
 307           This enables support for the Freescale DSPI controller in master
 308           mode. VF610 platform uses the controller.
 309
 310 config SPI_FSL_ESPI
 311         tristate "Freescale eSPI controller"
 312         depends on FSL_SOC
 313         select SPI_FSL_LIB
 314         help
 315           This enables using the Freescale eSPI controllers in master mode.
 316           From MPC8536, 85xx platform uses the controller, and all P10xx,
 317           P20xx, P30xx,P40xx, P50xx uses this controller.
 318
 319 config SPI_MESON_SPIFC
 320         tristate "Amlogic Meson SPIFC controller"
 321         depends on ARCH_MESON || COMPILE_TEST
 322         select REGMAP_MMIO
 323         help
 324           This enables master mode support for the SPIFC (SPI flash
 325           controller) available in Amlogic Meson SoCs.
 326
 327 config SPI_OC_TINY
 328         tristate "OpenCores tiny SPI"
 329         depends on GPIOLIB
 330         select SPI_BITBANG
 331         help
 332           This is the driver for OpenCores tiny SPI master controller.
 333
 334 config SPI_OCTEON
 335         tristate "Cavium OCTEON SPI controller"
 336         depends on CAVIUM_OCTEON_SOC
 337         help
 338           SPI host driver for the hardware found on some Cavium OCTEON
 339           SOCs.
 340
 341 config SPI_OMAP_UWIRE
 342         tristate "OMAP1 MicroWire"
 343         depends on ARCH_OMAP1
 344         select SPI_BITBANG
 345         help
 346           This hooks up to the MicroWire controller on OMAP1 chips.
 347
 348 config SPI_OMAP24XX
 349         tristate "McSPI driver for OMAP"
 350         depends on HAS_DMA
 351         depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
 352         depends on ARCH_OMAP2PLUS || COMPILE_TEST
 353         help
 354           SPI master controller for OMAP24XX and later Multichannel SPI
 355           (McSPI) modules.
 356
 357 config SPI_TI_QSPI
 358         tristate "DRA7xxx QSPI controller support"
 359         depends on ARCH_OMAP2PLUS || COMPILE_TEST
 360         help
 361           QSPI master controller for DRA7xxx used for flash devices.
 362           This device supports single, dual and quad read support, while
 363           it only supports single write mode.
 364
 365 config SPI_OMAP_100K
 366         tristate "OMAP SPI 100K"
 367         depends on ARCH_OMAP850 || ARCH_OMAP730 || COMPILE_TEST
 368         help
 369           OMAP SPI 100K master controller for omap7xx boards.
 370
 371 config SPI_ORION
 372         tristate "Orion SPI master"
 373         depends on PLAT_ORION || COMPILE_TEST
 374         help
 375           This enables using the SPI master controller on the Orion chips.
 376
 377 config SPI_PL022
 378         tristate "ARM AMBA PL022 SSP controller"
 379         depends on ARM_AMBA
 380         default y if MACH_U300
 381         default y if ARCH_REALVIEW
 382         default y if INTEGRATOR_IMPD1
 383         default y if ARCH_VERSATILE
 384         help
 385           This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
 386           controller. If you have an embedded system with an AMBA(R)
 387           bus and a PL022 controller, say Y or M here.
 388
 389 config SPI_PPC4xx
 390         tristate "PPC4xx SPI Controller"
 391         depends on PPC32 && 4xx
 392         select SPI_BITBANG
 393         help
 394           This selects a driver for the PPC4xx SPI Controller.
 395
 396 config SPI_PXA2XX_PXADMA
 397         bool "PXA2xx SSP legacy PXA DMA API support"
 398         depends on SPI_PXA2XX && ARCH_PXA
 399         help
 400           Enable PXA private legacy DMA API support. Note that this is
 401           deprecated in favor of generic DMA engine API.
 402
 403 config SPI_PXA2XX_DMA
 404         def_bool y
 405         depends on SPI_PXA2XX && !SPI_PXA2XX_PXADMA
 406
 407 config SPI_PXA2XX
 408         tristate "PXA2xx SSP SPI master"
 409         depends on (ARCH_PXA || PCI || ACPI)
 410         select PXA_SSP if ARCH_PXA
 411         help
 412           This enables using a PXA2xx or Sodaville SSP port as a SPI master
 413           controller. The driver can be configured to use any SSP port and
 414           additional documentation can be found a Documentation/spi/pxa2xx.
 415
 416 config SPI_PXA2XX_PCI
 417         def_tristate SPI_PXA2XX && PCI && COMMON_CLK
 418
 419 config SPI_ROCKCHIP
 420         tristate "Rockchip SPI controller driver"
 421         depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
 422         help
 423           This selects a driver for Rockchip SPI controller.
 424
 425           If you say yes to this option, support will be included for
 426           RK3066, RK3188 and RK3288 families of SPI controller.
 427           Rockchip SPI controller support DMA transport and PIO mode.
 428           The main usecase of this controller is to use spi flash as boot
 429           device.
 430
 431 config SPI_RSPI
 432         tristate "Renesas RSPI/QSPI controller"
 433         depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 434         help
 435           SPI driver for Renesas RSPI and QSPI blocks.
 436
 437 config SPI_QUP
 438         tristate "Qualcomm SPI controller with QUP interface"
 439         depends on ARCH_QCOM || (ARM && COMPILE_TEST)
 440         help
 441           Qualcomm Universal Peripheral (QUP) core is an AHB slave that
 442           provides a common data path (an output FIFO and an input FIFO)
 443           for serial peripheral interface (SPI) mini-core. SPI in master
 444           mode supports up to 50MHz, up to four chip selects, programmable
 445           data path from 4 bits to 32 bits and numerous protocol variants.
 446
 447           This driver can also be built as a module.  If so, the module
 448           will be called spi_qup.
 449
 450 config SPI_S3C24XX
 451         tristate "Samsung S3C24XX series SPI"
 452         depends on ARCH_S3C24XX
 453         select SPI_BITBANG
 454         help
 455           SPI driver for Samsung S3C24XX series ARM SoCs
 456
 457 config SPI_S3C24XX_FIQ
 458         bool "S3C24XX driver with FIQ pseudo-DMA"
 459         depends on SPI_S3C24XX
 460         select FIQ
 461         help
 462           Enable FIQ support for the S3C24XX SPI driver to provide pseudo
 463           DMA by using the fast-interrupt request framework, This allows
 464           the driver to get DMA-like performance when there are either
 465           no free DMA channels, or when doing transfers that required both
 466           TX and RX data paths.
 467
 468 config SPI_S3C64XX
 469         tristate "Samsung S3C64XX series type SPI"
 470         depends on (PLAT_SAMSUNG || ARCH_EXYNOS)
 471         help
 472           SPI driver for Samsung S3C64XX and newer SoCs.
 473
 474 config SPI_SC18IS602
 475         tristate "NXP SC18IS602/602B/603 I2C to SPI bridge"
 476         depends on I2C
 477         help
 478           SPI driver for NXP SC18IS602/602B/603 I2C to SPI bridge.
 479
 480 config SPI_SH_MSIOF
 481         tristate "SuperH MSIOF SPI controller"
 482         depends on HAVE_CLK && HAS_DMA
 483         depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 484         help
 485           SPI driver for SuperH and SH Mobile MSIOF blocks.
 486
 487 config SPI_SH
 488         tristate "SuperH SPI controller"
 489         depends on SUPERH || COMPILE_TEST
 490         help
 491           SPI driver for SuperH SPI blocks.
 492
 493 config SPI_SH_SCI
 494         tristate "SuperH SCI SPI controller"
 495         depends on SUPERH
 496         select SPI_BITBANG
 497         help
 498           SPI driver for SuperH SCI blocks.
 499
 500 config SPI_SH_HSPI
 501         tristate "SuperH HSPI controller"
 502         depends on ARCH_SHMOBILE || COMPILE_TEST
 503         help
 504           SPI driver for SuperH HSPI blocks.
 505
 506 config SPI_SIRF
 507         tristate "CSR SiRFprimaII SPI controller"
 508         depends on SIRF_DMA
 509         select SPI_BITBANG
 510         help
 511           SPI driver for CSR SiRFprimaII SoCs
 512
 513 config SPI_ST_SSC4
 514         tristate "STMicroelectronics SPI SSC-based driver"
 515         depends on ARCH_STI
 516         help
 517           STMicroelectronics SoCs support for SPI. If you say yes to
 518           this option, support will be included for the SSC driven SPI.
 519
 520 config SPI_SUN4I
 521         tristate "Allwinner A10 SoCs SPI controller"
 522         depends on ARCH_SUNXI || COMPILE_TEST
 523         help
 524           SPI driver for Allwinner sun4i, sun5i and sun7i SoCs
 525
 526 config SPI_SUN6I
 527         tristate "Allwinner A31 SPI controller"
 528         depends on ARCH_SUNXI || COMPILE_TEST
 529         depends on RESET_CONTROLLER
 530         help
 531           This enables using the SPI controller on the Allwinner A31 SoCs.
 532
 533 config SPI_MXS
 534         tristate "Freescale MXS SPI controller"
 535         depends on ARCH_MXS
 536         select STMP_DEVICE
 537         help
 538           SPI driver for Freescale MXS devices.
 539
 540 config SPI_TEGRA114
 541         tristate "NVIDIA Tegra114 SPI Controller"
 542         depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
 543         depends on RESET_CONTROLLER && HAS_DMA
 544         help
 545           SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller
 546           is different than the older SoCs SPI controller and also register interface
 547           get changed with this controller.
 548
 549 config SPI_TEGRA20_SFLASH
 550         tristate "Nvidia Tegra20 Serial flash Controller"
 551         depends on ARCH_TEGRA || COMPILE_TEST
 552         depends on RESET_CONTROLLER
 553         help
 554           SPI driver for Nvidia Tegra20 Serial flash Controller interface.
 555           The main usecase of this controller is to use spi flash as boot
 556           device.
 557
 558 config SPI_TEGRA20_SLINK
 559         tristate "Nvidia Tegra20/Tegra30 SLINK Controller"
 560         depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
 561         depends on RESET_CONTROLLER && HAS_DMA
 562         help
 563           SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface.
 564
 565 config SPI_TOPCLIFF_PCH
 566         tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI"
 567         depends on PCI && (X86_32 || COMPILE_TEST)
 568         help
 569           SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
 570           used in some x86 embedded processors.
 571
 572           This driver also supports the ML7213/ML7223/ML7831, a companion chip
 573           for the Atom E6xx series and compatible with the Intel EG20T PCH.
 574
 575 config SPI_TXX9
 576         tristate "Toshiba TXx9 SPI controller"
 577         depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST)
 578         help
 579           SPI driver for Toshiba TXx9 MIPS SoCs
 580
 581 config SPI_XCOMM
 582         tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver"
 583         depends on I2C
 584         help
 585           Support for the SPI-I2C bridge found on the Analog Devices
 586           AD-FMCOMMS1-EBZ board.
 587
 588 config SPI_XILINX
 589         tristate "Xilinx SPI controller common module"
 590         depends on HAS_IOMEM
 591         select SPI_BITBANG
 592         help
 593           This exposes the SPI controller IP from the Xilinx EDK.
 594
 595           See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
 596           Product Specification document (DS464) for hardware details.
 597
 598           Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
 599
 600 config SPI_XTENSA_XTFPGA
 601         tristate "Xtensa SPI controller for xtfpga"
 602         depends on (XTENSA && XTENSA_PLATFORM_XTFPGA) || COMPILE_TEST
 603         select SPI_BITBANG
 604         help
 605           SPI driver for xtfpga SPI master controller.
 606
 607           This simple SPI master controller is built into xtfpga bitstreams
 608           and is used to control daughterboard audio codec. It always transfers
 609           16 bit words in SPI mode 0, automatically asserting CS on transfer
 610           start and deasserting on end.
 611
 612 config SPI_NUC900
 613         tristate "Nuvoton NUC900 series SPI"
 614         depends on ARCH_W90X900
 615         select SPI_BITBANG
 616         help
 617           SPI driver for Nuvoton NUC900 series ARM SoCs
 618
 619 #
 620 # Add new SPI master controllers in alphabetical order above this line
 621 #
 622
 623 config SPI_DESIGNWARE
 624         tristate "DesignWare SPI controller core support"
 625         help
 626           general driver for SPI controller core from DesignWare
 627
 628 config SPI_DW_PCI
 629         tristate "PCI interface driver for DW SPI core"
 630         depends on SPI_DESIGNWARE && PCI
 631
 632 config SPI_DW_MID_DMA
 633         bool "DMA support for DW SPI controller on Intel MID platform"
 634         depends on SPI_DW_PCI && DW_DMAC_PCI
 635
 636 config SPI_DW_MMIO
 637         tristate "Memory-mapped io interface driver for DW SPI core"
 638         depends on SPI_DESIGNWARE
 639
 640 #
 641 # There are lots of SPI device types, with sensors and memory
 642 # being probably the most widely used ones.
 643 #
 644 comment "SPI Protocol Masters"
 645
 646 config SPI_SPIDEV
 647         tristate "User mode SPI device driver support"
 648         help
 649           This supports user mode SPI protocol drivers.
 650
 651           Note that this application programming interface is EXPERIMENTAL
 652           and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
 653
 654 config SPI_TLE62X0
 655         tristate "Infineon TLE62X0 (for power switching)"
 656         depends on SYSFS
 657         help
 658           SPI driver for Infineon TLE62X0 series line driver chips,
 659           such as the TLE6220, TLE6230 and TLE6240.  This provides a
 660           sysfs interface, with each line presented as a kind of GPIO
 661           exposing both switch control and diagnostic feedback.
 662
 663 #
 664 # Add new SPI protocol masters in alphabetical order above this line
 665 #
 666
 667 endif # SPI_MASTER
 668
 669 # (slave support would go here)
 670
 671 endif # SPI