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.
14 The "Serial Peripheral Interface" is a low level synchronous
15 protocol. Chips that support SPI can have data transfer rates
16 up to several tens of Mbit/sec. Chips are addressed with a
17 controller and a chipselect. Most SPI slaves don't support
18 dynamic device discovery; some are even write-only or read-only.
20 SPI is widely used by microcontrollers to talk with sensors,
21 eeprom and flash memory, codecs and various other controller
22 chips, analog to digital (and d-to-a) converters, and more.
23 MMC and SD cards can be accessed using SPI protocol; and for
24 DataFlash cards used in MMC sockets, SPI must always be used.
26 SPI is one of a family of similar protocols using a four wire
27 interface (select, clock, data in, data out) including Microwire
28 (half duplex), SSP, SSI, and PSP. This driver framework should
29 work with most such devices and controllers.
32 boolean "Debug support for SPI drivers"
33 depends on SPI && 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 && BFIN
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 SPI controller"
128 depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
131 This enables using the Freescale MPC83xx SPI controller in master
134 Note, this driver uniquely supports the SPI controller on the MPC83xx
135 family of PowerPC processors. The MPC83xx uses a simple set of shift
136 registers for data (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.
147 tristate "PXA2xx SSP SPI master"
148 depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
150 This enables using a PXA2xx SSP port as a SPI master controller.
151 The driver can be configured to use any SSP port and additional
152 documentation can be found a Documentation/spi/pxa2xx.
155 tristate "Samsung S3C24XX series SPI"
156 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
159 SPI driver for Samsung S3C24XX series ARM SoCs
161 config SPI_S3C24XX_GPIO
162 tristate "Samsung S3C24XX series SPI by GPIO"
163 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
166 SPI driver for Samsung S3C24XX series ARM SoCs using
167 GPIO lines to provide the SPI bus. This can be used where
168 the inbuilt hardware cannot provide the transfer mode, or
169 where the board is using non hardware connected pins.
172 tristate "Xilinx SPI controller"
173 depends on SPI_MASTER && XILINX_VIRTEX && EXPERIMENTAL
176 This exposes the SPI controller IP from the Xilinx EDK.
178 See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
179 Product Specification document (DS464) for hardware details.
182 # Add new SPI master controllers in alphabetical order above this line
186 # There are lots of SPI device types, with sensors and memory
187 # being probably the most widely used ones.
189 comment "SPI Protocol Masters"
190 depends on SPI_MASTER
193 tristate "SPI EEPROMs from most vendors"
194 depends on SPI_MASTER && SYSFS
196 Enable this driver to get read/write support to most SPI EEPROMs,
197 after you configure the board init code to know about each eeprom
198 on your target board.
200 This driver can also be built as a module. If so, the module
204 tristate "User mode SPI device driver support"
205 depends on SPI_MASTER && EXPERIMENTAL
207 This supports user mode SPI protocol drivers.
209 Note that this application programming interface is EXPERIMENTAL
210 and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
213 tristate "Infineon TLE62X0 (for power switching)"
214 depends on SPI_MASTER && SYSFS
216 SPI driver for Infineon TLE62X0 series line driver chips,
217 such as the TLE6220, TLE6230 and TLE6240. This provides a
218 sysfs interface, with each line presented as a kind of GPIO
219 exposing both switch control and diagnostic feedback.
222 # Add new SPI protocol masters in alphabetical order above this line
225 # (slave support would go here)
227 endmenu # "SPI support"