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
52 comment "SPI Master Controller Drivers"
56 tristate "Atmel SPI Controller"
57 depends on (ARCH_AT91 || AVR32) && SPI_MASTER
59 This selects a driver for the Atmel SPI Controller, present on
60 many AT32 (AVR32) and AT91 (ARM) chips.
63 tristate "SPI controller driver for ADI Blackfin5xx"
64 depends on SPI_MASTER && BLACKFIN
66 This is the SPI controller master driver for Blackfin 5xx processor.
69 tristate "Au1550/Au12x0 SPI Controller"
70 depends on SPI_MASTER && (SOC_AU1550 || SOC_AU1200) && EXPERIMENTAL
73 If you say yes to this option, support will be included for the
74 Au1550 SPI controller (may also work with Au1200,Au1210,Au1250).
76 This driver can also be built as a module. If so, the module
77 will be called au1550_spi.
80 tristate "Bitbanging SPI master"
81 depends on SPI_MASTER && EXPERIMENTAL
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)"
95 depends on SPI_MASTER && PARPORT && EXPERIMENTAL
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 "Freescale iMX SPI controller"
105 depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
107 This enables using the Freescale iMX SPI controller in master
111 tristate "Parallel port adapter for LM70 eval board (DEVELOPMENT)"
112 depends on SPI_MASTER && PARPORT && EXPERIMENTAL
115 This driver supports the NS LM70 LLP Evaluation Board,
116 which interfaces to an LM70 temperature sensor using
119 config SPI_MPC52xx_PSC
120 tristate "Freescale MPC52xx PSC SPI controller"
121 depends on SPI_MASTER && PPC_MPC52xx && EXPERIMENTAL
123 This enables using the Freescale MPC52xx Programmable Serial
124 Controller in master SPI mode.
127 tristate "Freescale MPC83xx/QUICC Engine SPI controller"
128 depends on SPI_MASTER && (PPC_83xx || QUICC_ENGINE) && EXPERIMENTAL
130 This enables using the Freescale MPC83xx and QUICC Engine SPI
131 controllers in master mode.
133 Note, this driver uniquely supports the SPI controller on the MPC83xx
134 family of PowerPC processors, plus processors with QUICC Engine
135 technology. This driver uses a simple set of shift registers for data
136 (opposed to the CPM based descriptor model).
138 config SPI_OMAP_UWIRE
139 tristate "OMAP1 MicroWire"
140 depends on SPI_MASTER && ARCH_OMAP1
143 This hooks up to the MicroWire controller on OMAP1 chips.
146 tristate "McSPI driver for OMAP24xx/OMAP34xx"
147 depends on SPI_MASTER && (ARCH_OMAP24XX || ARCH_OMAP34XX)
149 SPI master controller for OMAP24xx/OMAP34xx Multichannel SPI
153 tristate "PXA2xx SSP SPI master"
154 depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
157 This enables using a PXA2xx SSP port as a SPI master controller.
158 The driver can be configured to use any SSP port and additional
159 documentation can be found a Documentation/spi/pxa2xx.
162 tristate "Samsung S3C24XX series SPI"
163 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
166 SPI driver for Samsung S3C24XX series ARM SoCs
168 config SPI_S3C24XX_GPIO
169 tristate "Samsung S3C24XX series SPI by GPIO"
170 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
173 SPI driver for Samsung S3C24XX series ARM SoCs using
174 GPIO lines to provide the SPI bus. This can be used where
175 the inbuilt hardware cannot provide the transfer mode, or
176 where the board is using non hardware connected pins.
179 tristate "SuperH SCI SPI controller"
180 depends on SPI_MASTER && SUPERH
183 SPI driver for SuperH SCI blocks.
186 tristate "Toshiba TXx9 SPI controller"
187 depends on SPI_MASTER && GENERIC_GPIO && CPU_TX49XX
189 SPI driver for Toshiba TXx9 MIPS SoCs
192 tristate "Xilinx SPI controller"
193 depends on SPI_MASTER && XILINX_VIRTEX && EXPERIMENTAL
196 This exposes the SPI controller IP from the Xilinx EDK.
198 See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
199 Product Specification document (DS464) for hardware details.
202 # Add new SPI master controllers in alphabetical order above this line
206 # There are lots of SPI device types, with sensors and memory
207 # being probably the most widely used ones.
209 comment "SPI Protocol Masters"
210 depends on SPI_MASTER
213 tristate "SPI EEPROMs from most vendors"
214 depends on SPI_MASTER && SYSFS
216 Enable this driver to get read/write support to most SPI EEPROMs,
217 after you configure the board init code to know about each eeprom
218 on your target board.
220 This driver can also be built as a module. If so, the module
224 tristate "User mode SPI device driver support"
225 depends on SPI_MASTER && EXPERIMENTAL
227 This supports user mode SPI protocol drivers.
229 Note that this application programming interface is EXPERIMENTAL
230 and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
233 tristate "Infineon TLE62X0 (for power switching)"
234 depends on SPI_MASTER && SYSFS
236 SPI driver for Infineon TLE62X0 series line driver chips,
237 such as the TLE6220, TLE6230 and TLE6240. This provides a
238 sysfs interface, with each line presented as a kind of GPIO
239 exposing both switch control and diagnostic feedback.
242 # Add new SPI protocol masters in alphabetical order above this line
245 # (slave support would go here)