2 # SPI driver configuration
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.
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.
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.
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.
32 boolean "Debug support for SPI drivers"
33 depends on DEBUG_KERNEL
35 Say "yes" to enable debug messaging (like dev_dbg and pr_debug),
36 sysfs, and debugfs support in SPI controller and protocol drivers.
39 # MASTER side ... talking to discrete SPI slave chips including microcontrollers
43 # boolean "SPI Master Support"
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
54 comment "SPI Master Controller Drivers"
57 tristate "Atmel SPI Controller"
58 depends on (ARCH_AT91 || AVR32)
60 This selects a driver for the Atmel SPI Controller, present on
61 many AT32 (AVR32) and AT91 (ARM) chips.
64 tristate "SPI controller driver for ADI Blackfin5xx"
67 This is the SPI controller master driver for Blackfin 5xx processor.
70 tristate "Au1550/Au12x0 SPI Controller"
71 depends on (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL
74 If you say yes to this option, support will be included for the
75 Au1550 SPI controller (may also work with Au1200,Au1210,Au1250).
77 This driver can also be built as a module. If so, the module
78 will be called au1550_spi.
81 tristate "Utilities for Bitbanging SPI masters"
83 With a few GPIO pins, your system can bitbang the SPI protocol.
84 Select this to get SPI support through I/O pins (GPIO, parallel
85 port, etc). Or, some systems' SPI master controller drivers use
86 this code to manage the per-word or per-transfer accesses to the
87 hardware shift registers.
89 This is library code, and is automatically selected by drivers that
90 need it. You only need to select this explicitly to support driver
91 modules that aren't part of this kernel tree.
94 tristate "Parallel port adapter for AVR Butterfly (DEVELOPMENT)"
98 This uses a custom parallel port cable to connect to an AVR
99 Butterfly <http://www.atmel.com/products/avr/butterfly>, an
100 inexpensive battery powered microcontroller evaluation board.
101 This same cable can be used to flash new firmware.
104 tristate "GPIO-based bitbanging SPI Master"
105 depends on GENERIC_GPIO
108 This simple GPIO bitbanging SPI master uses the arch-neutral GPIO
109 interface to manage MOSI, MISO, SCK, and chipselect signals. SPI
110 slaves connected to a bus using this driver are configured as usual,
111 except that the spi_board_info.controller_data holds the GPIO number
112 for the chipselect used by this controller driver.
114 Note that this driver often won't achieve even 1 Mbit/sec speeds,
115 making it unusually slow for SPI. If your platform can inline
116 GPIO operations, you should be able to leverage that for better
117 speed with a custom version of this driver; see the source code.
120 tristate "Freescale iMX SPI controller"
121 depends on ARCH_IMX && EXPERIMENTAL
123 This enables using the Freescale iMX SPI controller in master
127 tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
128 depends on PARPORT && EXPERIMENTAL
131 This driver supports the NS LM70 LLP Evaluation Board,
132 which interfaces to an LM70 temperature sensor using
135 config SPI_MPC52xx_PSC
136 tristate "Freescale MPC52xx PSC SPI controller"
137 depends on PPC_MPC52xx && EXPERIMENTAL
139 This enables using the Freescale MPC52xx Programmable Serial
140 Controller in master SPI mode.
143 tristate "Freescale MPC83xx/QUICC Engine SPI controller"
144 depends on (PPC_83xx || QUICC_ENGINE) && EXPERIMENTAL
146 This enables using the Freescale MPC83xx and QUICC Engine SPI
147 controllers in master mode.
149 Note, this driver uniquely supports the SPI controller on the MPC83xx
150 family of PowerPC processors, plus processors with QUICC Engine
151 technology. This driver uses a simple set of shift registers for data
152 (opposed to the CPM based descriptor model).
154 config SPI_OMAP_UWIRE
155 tristate "OMAP1 MicroWire"
156 depends on ARCH_OMAP1
159 This hooks up to the MicroWire controller on OMAP1 chips.
162 tristate "McSPI driver for OMAP24xx/OMAP34xx"
163 depends on ARCH_OMAP24XX || ARCH_OMAP34XX
165 SPI master controller for OMAP24xx/OMAP34xx Multichannel SPI
169 tristate "Orion SPI master (EXPERIMENTAL)"
170 depends on PLAT_ORION && EXPERIMENTAL
172 This enables using the SPI master controller on the Orion chips.
175 tristate "PXA2xx SSP SPI master"
176 depends on ARCH_PXA && EXPERIMENTAL
179 This enables using a PXA2xx SSP port as a SPI master controller.
180 The driver can be configured to use any SSP port and additional
181 documentation can be found a Documentation/spi/pxa2xx.
184 tristate "Samsung S3C24XX series SPI"
185 depends on ARCH_S3C2410 && EXPERIMENTAL
188 SPI driver for Samsung S3C24XX series ARM SoCs
190 config SPI_S3C24XX_GPIO
191 tristate "Samsung S3C24XX series SPI by GPIO"
192 depends on ARCH_S3C2410 && EXPERIMENTAL
195 SPI driver for Samsung S3C24XX series ARM SoCs using
196 GPIO lines to provide the SPI bus. This can be used where
197 the inbuilt hardware cannot provide the transfer mode, or
198 where the board is using non hardware connected pins.
201 tristate "SuperH SCI SPI controller"
205 SPI driver for SuperH SCI blocks.
208 tristate "Toshiba TXx9 SPI controller"
209 depends on GENERIC_GPIO && CPU_TX49XX
211 SPI driver for Toshiba TXx9 MIPS SoCs
214 tristate "Xilinx SPI controller"
215 depends on XILINX_VIRTEX && EXPERIMENTAL
218 This exposes the SPI controller IP from the Xilinx EDK.
220 See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
221 Product Specification document (DS464) for hardware details.
224 # Add new SPI master controllers in alphabetical order above this line
228 # There are lots of SPI device types, with sensors and memory
229 # being probably the most widely used ones.
231 comment "SPI Protocol Masters"
234 tristate "User mode SPI device driver support"
235 depends on EXPERIMENTAL
237 This supports user mode SPI protocol drivers.
239 Note that this application programming interface is EXPERIMENTAL
240 and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
243 tristate "Infineon TLE62X0 (for power switching)"
246 SPI driver for Infineon TLE62X0 series line driver chips,
247 such as the TLE6220, TLE6230 and TLE6240. This provides a
248 sysfs interface, with each line presented as a kind of GPIO
249 exposing both switch control and diagnostic feedback.
252 # Add new SPI protocol masters in alphabetical order above this line
257 # (slave support would go here)