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 (ARCH_AT91 || AVR32 || COMPILE_TEST)
  73         help
  74           This selects a driver for the Atmel SPI Controller, present on
  75           many AT32 (AVR32) and AT91 (ARM) chips.
  76
  77 config SPI_BCM2835
  78         tristate "BCM2835 SPI controller"
  79         depends on ARCH_BCM2835 || COMPILE_TEST
  80         help
  81           This selects a driver for the Broadcom BCM2835 SPI master.
  82
  83           The BCM2835 contains two types of SPI master controller; the
  84           "universal SPI master", and the regular SPI controller. This driver
  85           is for the regular SPI controller. Slave mode operation is not also
  86           not supported.
  87
  88 config SPI_BFIN5XX
  89         tristate "SPI controller driver for ADI Blackfin5xx"
  90         depends on BLACKFIN && !BF60x
  91         help
  92           This is the SPI controller master driver for Blackfin 5xx processor.
  93
  94 config SPI_ADI_V3
  95         tristate "SPI controller v3 for ADI"
  96         depends on BF60x
  97         help
  98           This is the SPI controller v3 master driver
  99           found on Blackfin 60x processor.
 100
 101 config SPI_BFIN_SPORT
 102         tristate "SPI bus via Blackfin SPORT"
 103         depends on BLACKFIN
 104         help
 105           Enable support for a SPI bus via the Blackfin SPORT peripheral.
 106
 107 config SPI_AU1550
 108         tristate "Au1550/Au1200/Au1300 SPI Controller"
 109         depends on MIPS_ALCHEMY
 110         select SPI_BITBANG
 111         help
 112           If you say yes to this option, support will be included for the
 113           PSC SPI controller found on Au1550, Au1200 and Au1300 series.
 114
 115 config SPI_BCM63XX
 116         tristate "Broadcom BCM63xx SPI controller"
 117         depends on BCM63XX
 118         help
 119           Enable support for the SPI controller on the Broadcom BCM63xx SoCs.
 120
 121 config SPI_BCM63XX_HSSPI
 122         tristate "Broadcom BCM63XX HS SPI controller driver"
 123         depends on BCM63XX || COMPILE_TEST
 124         help
 125           This enables support for the High Speed SPI controller present on
 126           newer Broadcom BCM63XX SoCs.
 127
 128 config SPI_BITBANG
 129         tristate "Utilities for Bitbanging SPI masters"
 130         help
 131           With a few GPIO pins, your system can bitbang the SPI protocol.
 132           Select this to get SPI support through I/O pins (GPIO, parallel
 133           port, etc).  Or, some systems' SPI master controller drivers use
 134           this code to manage the per-word or per-transfer accesses to the
 135           hardware shift registers.
 136
 137           This is library code, and is automatically selected by drivers that
 138           need it.  You only need to select this explicitly to support driver
 139           modules that aren't part of this kernel tree.
 140
 141 config SPI_BUTTERFLY
 142         tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
 143         depends on PARPORT
 144         select SPI_BITBANG
 145         help
 146           This uses a custom parallel port cable to connect to an AVR
 147           Butterfly <http://www.atmel.com/products/avr/butterfly>, an
 148           inexpensive battery powered microcontroller evaluation board.
 149           This same cable can be used to flash new firmware.
 150
 151 config SPI_CADENCE
 152         tristate "Cadence SPI controller"
 153         depends on ARM
 154         help
 155           This selects the Cadence SPI controller master driver
 156           used by Xilinx Zynq.
 157
 158 config SPI_CLPS711X
 159         tristate "CLPS711X host SPI controller"
 160         depends on ARCH_CLPS711X || COMPILE_TEST
 161         help
 162           This enables dedicated general purpose SPI/Microwire1-compatible
 163           master mode interface (SSI1) for CLPS711X-based CPUs.
 164
 165 config SPI_COLDFIRE_QSPI
 166         tristate "Freescale Coldfire QSPI controller"
 167         depends on (M520x || M523x || M5249 || M525x || M527x || M528x || M532x)
 168         help
 169           This enables support for the Coldfire QSPI controller in master
 170           mode.
 171
 172 config SPI_DAVINCI
 173         tristate "Texas Instruments DaVinci/DA8x/OMAP-L/AM1x SoC SPI controller"
 174         depends on ARCH_DAVINCI || ARCH_KEYSTONE
 175         select SPI_BITBANG
 176         help
 177           SPI master controller for DaVinci/DA8x/OMAP-L/AM1x SPI modules.
 178
 179 config SPI_EFM32
 180         tristate "EFM32 SPI controller"
 181         depends on OF && ARM && (ARCH_EFM32 || COMPILE_TEST)
 182         select SPI_BITBANG
 183         help
 184           Driver for the spi controller found on Energy Micro's EFM32 SoCs.
 185
 186 config SPI_EP93XX
 187         tristate "Cirrus Logic EP93xx SPI controller"
 188         depends on ARCH_EP93XX || COMPILE_TEST
 189         help
 190           This enables using the Cirrus EP93xx SPI controller in master
 191           mode.
 192
 193 config SPI_FALCON
 194         tristate "Falcon SPI controller support"
 195         depends on SOC_FALCON
 196         help
 197           The external bus unit (EBU) found on the FALC-ON SoC has SPI
 198           emulation that is designed for serial flash access. This driver
 199           has only been tested with m25p80 type chips. The hardware has no
 200           support for other types of SPI peripherals.
 201
 202 config SPI_GPIO
 203         tristate "GPIO-based bitbanging SPI Master"
 204         depends on GPIOLIB
 205         select SPI_BITBANG
 206         help
 207           This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
 208           interface to manage MOSI, MISO, SCK, and chipselect signals.  SPI
 209           slaves connected to a bus using this driver are configured as usual,
 210           except that the spi_board_info.controller_data holds the GPIO number
 211           for the chipselect used by this controller driver.
 212
 213           Note that this driver often won't achieve even 1 Mbit/sec speeds,
 214           making it unusually slow for SPI.  If your platform can inline
 215           GPIO operations, you should be able to leverage that for better
 216           speed with a custom version of this driver; see the source code.
 217
 218 config SPI_IMX
 219         tristate "Freescale i.MX SPI controllers"
 220         depends on ARCH_MXC || COMPILE_TEST
 221         select SPI_BITBANG
 222         help
 223           This enables using the Freescale i.MX SPI controllers in master
 224           mode.
 225
 226 config SPI_LM70_LLP
 227         tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
 228         depends on PARPORT
 229         select SPI_BITBANG
 230         help
 231           This driver supports the NS LM70 LLP Evaluation Board,
 232           which interfaces to an LM70 temperature sensor using
 233           a parallel port.
 234
 235 config SPI_MPC52xx
 236         tristate "Freescale MPC52xx SPI (non-PSC) controller support"
 237         depends on PPC_MPC52xx
 238         help
 239           This drivers supports the MPC52xx SPI controller in master SPI
 240           mode.
 241
 242 config SPI_MPC52xx_PSC
 243         tristate "Freescale MPC52xx PSC SPI controller"
 244         depends on PPC_MPC52xx
 245         help
 246           This enables using the Freescale MPC52xx Programmable Serial
 247           Controller in master SPI mode.
 248
 249 config SPI_MPC512x_PSC
 250         tristate "Freescale MPC512x PSC SPI controller"
 251         depends on PPC_MPC512x
 252         help
 253           This enables using the Freescale MPC5121 Programmable Serial
 254           Controller in SPI master mode.
 255
 256 config SPI_FSL_LIB
 257         tristate
 258         depends on OF
 259
 260 config SPI_FSL_CPM
 261         tristate
 262         depends on FSL_SOC
 263
 264 config SPI_FSL_SPI
 265         bool "Freescale SPI controller and Aeroflex Gaisler GRLIB SPI controller"
 266         depends on OF
 267         select SPI_FSL_LIB
 268         select SPI_FSL_CPM if FSL_SOC
 269         help
 270           This enables using the Freescale SPI controllers in master mode.
 271           MPC83xx platform uses the controller in cpu mode or CPM/QE mode.
 272           MPC8569 uses the controller in QE mode, MPC8610 in cpu mode.
 273           This also enables using the Aeroflex Gaisler GRLIB SPI controller in
 274           master mode.
 275
 276 config SPI_FSL_DSPI
 277         tristate "Freescale DSPI controller"
 278         select SPI_BITBANG
 279         select REGMAP_MMIO
 280         depends on SOC_VF610 || COMPILE_TEST
 281         help
 282           This enables support for the Freescale DSPI controller in master
 283           mode. VF610 platform uses the controller.
 284
 285 config SPI_FSL_ESPI
 286         bool "Freescale eSPI controller"
 287         depends on FSL_SOC
 288         select SPI_FSL_LIB
 289         help
 290           This enables using the Freescale eSPI controllers in master mode.
 291           From MPC8536, 85xx platform uses the controller, and all P10xx,
 292           P20xx, P30xx,P40xx, P50xx uses this controller.
 293
 294 config SPI_OC_TINY
 295         tristate "OpenCores tiny SPI"
 296         depends on GPIOLIB
 297         select SPI_BITBANG
 298         help
 299           This is the driver for OpenCores tiny SPI master controller.
 300
 301 config SPI_OCTEON
 302         tristate "Cavium OCTEON SPI controller"
 303         depends on CAVIUM_OCTEON_SOC
 304         help
 305           SPI host driver for the hardware found on some Cavium OCTEON
 306           SOCs.
 307
 308 config SPI_OMAP_UWIRE
 309         tristate "OMAP1 MicroWire"
 310         depends on ARCH_OMAP1
 311         select SPI_BITBANG
 312         help
 313           This hooks up to the MicroWire controller on OMAP1 chips.
 314
 315 config SPI_OMAP24XX
 316         tristate "McSPI driver for OMAP"
 317         depends on ARM || ARM64 || AVR32 || HEXAGON || MIPS || SUPERH
 318         depends on ARCH_OMAP2PLUS || COMPILE_TEST
 319         help
 320           SPI master controller for OMAP24XX and later Multichannel SPI
 321           (McSPI) modules.
 322
 323 config SPI_TI_QSPI
 324         tristate "DRA7xxx QSPI controller support"
 325         depends on ARCH_OMAP2PLUS || COMPILE_TEST
 326         help
 327           QSPI master controller for DRA7xxx used for flash devices.
 328           This device supports single, dual and quad read support, while
 329           it only supports single write mode.
 330
 331 config SPI_OMAP_100K
 332         tristate "OMAP SPI 100K"
 333         depends on ARCH_OMAP850 || ARCH_OMAP730 || COMPILE_TEST
 334         help
 335           OMAP SPI 100K master controller for omap7xx boards.
 336
 337 config SPI_ORION
 338         tristate "Orion SPI master"
 339         depends on PLAT_ORION || COMPILE_TEST
 340         help
 341           This enables using the SPI master controller on the Orion chips.
 342
 343 config SPI_PL022
 344         tristate "ARM AMBA PL022 SSP controller"
 345         depends on ARM_AMBA
 346         default y if MACH_U300
 347         default y if ARCH_REALVIEW
 348         default y if INTEGRATOR_IMPD1
 349         default y if ARCH_VERSATILE
 350         help
 351           This selects the ARM(R) AMBA(R) PrimeCell PL022 SSP
 352           controller. If you have an embedded system with an AMBA(R)
 353           bus and a PL022 controller, say Y or M here.
 354
 355 config SPI_PPC4xx
 356         tristate "PPC4xx SPI Controller"
 357         depends on PPC32 && 4xx
 358         select SPI_BITBANG
 359         help
 360           This selects a driver for the PPC4xx SPI Controller.
 361
 362 config SPI_PXA2XX_PXADMA
 363         bool "PXA2xx SSP legacy PXA DMA API support"
 364         depends on SPI_PXA2XX && ARCH_PXA
 365         help
 366           Enable PXA private legacy DMA API support. Note that this is
 367           deprecated in favor of generic DMA engine API.
 368
 369 config SPI_PXA2XX_DMA
 370         def_bool y
 371         depends on SPI_PXA2XX && !SPI_PXA2XX_PXADMA
 372
 373 config SPI_PXA2XX
 374         tristate "PXA2xx SSP SPI master"
 375         depends on (ARCH_PXA || PCI || ACPI)
 376         select PXA_SSP if ARCH_PXA
 377         help
 378           This enables using a PXA2xx or Sodaville SSP port as a SPI master
 379           controller. The driver can be configured to use any SSP port and
 380           additional documentation can be found a Documentation/spi/pxa2xx.
 381
 382 config SPI_PXA2XX_PCI
 383         def_tristate SPI_PXA2XX && PCI
 384
 385 config SPI_RSPI
 386         tristate "Renesas RSPI/QSPI controller"
 387         depends on (SUPERH && SH_DMAE_BASE) || ARCH_SHMOBILE
 388         help
 389           SPI driver for Renesas RSPI and QSPI blocks.
 390
 391 config SPI_QUP
 392         tristate "Qualcomm SPI controller with QUP interface"
 393         depends on ARCH_QCOM || (ARM && COMPILE_TEST)
 394         help
 395           Qualcomm Universal Peripheral (QUP) core is an AHB slave that
 396           provides a common data path (an output FIFO and an input FIFO)
 397           for serial peripheral interface (SPI) mini-core. SPI in master
 398           mode supports up to 50MHz, up to four chip selects, programmable
 399           data path from 4 bits to 32 bits and numerous protocol variants.
 400
 401           This driver can also be built as a module.  If so, the module
 402           will be called spi_qup.
 403
 404 config SPI_S3C24XX
 405         tristate "Samsung S3C24XX series SPI"
 406         depends on ARCH_S3C24XX
 407         select SPI_BITBANG
 408         help
 409           SPI driver for Samsung S3C24XX series ARM SoCs
 410
 411 config SPI_S3C24XX_FIQ
 412         bool "S3C24XX driver with FIQ pseudo-DMA"
 413         depends on SPI_S3C24XX
 414         select FIQ
 415         help
 416           Enable FIQ support for the S3C24XX SPI driver to provide pseudo
 417           DMA by using the fast-interrupt request framework, This allows
 418           the driver to get DMA-like performance when there are either
 419           no free DMA channels, or when doing transfers that required both
 420           TX and RX data paths.
 421
 422 config SPI_S3C64XX
 423         tristate "Samsung S3C64XX series type SPI"
 424         depends on PLAT_SAMSUNG
 425         select S3C64XX_PL080 if ARCH_S3C64XX
 426         help
 427           SPI driver for Samsung S3C64XX and newer SoCs.
 428
 429 config SPI_SC18IS602
 430         tristate "NXP SC18IS602/602B/603 I2C to SPI bridge"
 431         depends on I2C
 432         help
 433           SPI driver for NXP SC18IS602/602B/603 I2C to SPI bridge.
 434
 435 config SPI_SH_MSIOF
 436         tristate "SuperH MSIOF SPI controller"
 437         depends on HAVE_CLK
 438         depends on SUPERH || ARCH_SHMOBILE || COMPILE_TEST
 439         help
 440           SPI driver for SuperH and SH Mobile MSIOF blocks.
 441
 442 config SPI_SH
 443         tristate "SuperH SPI controller"
 444         depends on SUPERH || COMPILE_TEST
 445         help
 446           SPI driver for SuperH SPI blocks.
 447
 448 config SPI_SH_SCI
 449         tristate "SuperH SCI SPI controller"
 450         depends on SUPERH
 451         select SPI_BITBANG
 452         help
 453           SPI driver for SuperH SCI blocks.
 454
 455 config SPI_SH_HSPI
 456         tristate "SuperH HSPI controller"
 457         depends on ARCH_SHMOBILE || COMPILE_TEST
 458         help
 459           SPI driver for SuperH HSPI blocks.
 460
 461 config SPI_SIRF
 462         tristate "CSR SiRFprimaII SPI controller"
 463         depends on SIRF_DMA
 464         select SPI_BITBANG
 465         help
 466           SPI driver for CSR SiRFprimaII SoCs
 467
 468 config SPI_SUN4I
 469         tristate "Allwinner A10 SoCs SPI controller"
 470         depends on ARCH_SUNXI || COMPILE_TEST
 471         help
 472           SPI driver for Allwinner sun4i, sun5i and sun7i SoCs
 473
 474 config SPI_SUN6I
 475         tristate "Allwinner A31 SPI controller"
 476         depends on ARCH_SUNXI || COMPILE_TEST
 477         depends on RESET_CONTROLLER
 478         help
 479           This enables using the SPI controller on the Allwinner A31 SoCs.
 480
 481 config SPI_MXS
 482         tristate "Freescale MXS SPI controller"
 483         depends on ARCH_MXS
 484         select STMP_DEVICE
 485         help
 486           SPI driver for Freescale MXS devices.
 487
 488 config SPI_TEGRA114
 489         tristate "NVIDIA Tegra114 SPI Controller"
 490         depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
 491         depends on RESET_CONTROLLER
 492         help
 493           SPI driver for NVIDIA Tegra114 SPI Controller interface. This controller
 494           is different than the older SoCs SPI controller and also register interface
 495           get changed with this controller.
 496
 497 config SPI_TEGRA20_SFLASH
 498         tristate "Nvidia Tegra20 Serial flash Controller"
 499         depends on ARCH_TEGRA || COMPILE_TEST
 500         depends on RESET_CONTROLLER
 501         help
 502           SPI driver for Nvidia Tegra20 Serial flash Controller interface.
 503           The main usecase of this controller is to use spi flash as boot
 504           device.
 505
 506 config SPI_TEGRA20_SLINK
 507         tristate "Nvidia Tegra20/Tegra30 SLINK Controller"
 508         depends on (ARCH_TEGRA && TEGRA20_APB_DMA) || COMPILE_TEST
 509         depends on RESET_CONTROLLER
 510         help
 511           SPI driver for Nvidia Tegra20/Tegra30 SLINK Controller interface.
 512
 513 config SPI_TOPCLIFF_PCH
 514         tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) SPI"
 515         depends on PCI && (X86_32 || COMPILE_TEST)
 516         help
 517           SPI driver for the Topcliff PCH (Platform Controller Hub) SPI bus
 518           used in some x86 embedded processors.
 519
 520           This driver also supports the ML7213/ML7223/ML7831, a companion chip
 521           for the Atom E6xx series and compatible with the Intel EG20T PCH.
 522
 523 config SPI_TXX9
 524         tristate "Toshiba TXx9 SPI controller"
 525         depends on GPIOLIB && (CPU_TX49XX || COMPILE_TEST)
 526         help
 527           SPI driver for Toshiba TXx9 MIPS SoCs
 528
 529 config SPI_XCOMM
 530         tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver"
 531         depends on I2C
 532         help
 533           Support for the SPI-I2C bridge found on the Analog Devices
 534           AD-FMCOMMS1-EBZ board.
 535
 536 config SPI_XILINX
 537         tristate "Xilinx SPI controller common module"
 538         depends on HAS_IOMEM
 539         select SPI_BITBANG
 540         help
 541           This exposes the SPI controller IP from the Xilinx EDK.
 542
 543           See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
 544           Product Specification document (DS464) for hardware details.
 545
 546           Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"
 547
 548 config SPI_XTENSA_XTFPGA
 549         tristate "Xtensa SPI controller for xtfpga"
 550         depends on (XTENSA && XTENSA_PLATFORM_XTFPGA) || COMPILE_TEST
 551         select SPI_BITBANG
 552         help
 553           SPI driver for xtfpga SPI master controller.
 554
 555           This simple SPI master controller is built into xtfpga bitstreams
 556           and is used to control daughterboard audio codec. It always transfers
 557           16 bit words in SPI mode 0, automatically asserting CS on transfer
 558           start and deasserting on end.
 559
 560
 561 config SPI_NUC900
 562         tristate "Nuvoton NUC900 series SPI"
 563         depends on ARCH_W90X900
 564         select SPI_BITBANG
 565         help
 566           SPI driver for Nuvoton NUC900 series ARM SoCs
 567
 568 #
 569 # Add new SPI master controllers in alphabetical order above this line
 570 #
 571
 572 config SPI_DESIGNWARE
 573         tristate "DesignWare SPI controller core support"
 574         help
 575           general driver for SPI controller core from DesignWare
 576
 577 config SPI_DW_PCI
 578         tristate "PCI interface driver for DW SPI core"
 579         depends on SPI_DESIGNWARE && PCI
 580
 581 config SPI_DW_MID_DMA
 582         bool "DMA support for DW SPI controller on Intel Moorestown platform"
 583         depends on SPI_DW_PCI && INTEL_MID_DMAC
 584
 585 config SPI_DW_MMIO
 586         tristate "Memory-mapped io interface driver for DW SPI core"
 587         depends on SPI_DESIGNWARE
 588
 589 #
 590 # There are lots of SPI device types, with sensors and memory
 591 # being probably the most widely used ones.
 592 #
 593 comment "SPI Protocol Masters"
 594
 595 config SPI_SPIDEV
 596         tristate "User mode SPI device driver support"
 597         help
 598           This supports user mode SPI protocol drivers.
 599
 600           Note that this application programming interface is EXPERIMENTAL
 601           and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
 602
 603 config SPI_TLE62X0
 604         tristate "Infineon TLE62X0 (for power switching)"
 605         depends on SYSFS
 606         help
 607           SPI driver for Infineon TLE62X0 series line driver chips,
 608           such as the TLE6220, TLE6230 and TLE6240.  This provides a
 609           sysfs interface, with each line presented as a kind of GPIO
 610           exposing both switch control and diagnostic feedback.
 611
 612 #
 613 # Add new SPI protocol masters in alphabetical order above this line
 614 #
 615
 616 endif # SPI_MASTER
 617
 618 # (slave support would go here)
 619
 620 endif # SPI