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
110 config SPI_MPC52xx_PSC
111 tristate "Freescale MPC52xx PSC SPI controller"
112 depends on SPI_MASTER && PPC_MPC52xx && EXPERIMENTAL
114 This enables using the Freescale MPC52xx Programmable Serial
115 Controller in master SPI mode.
118 tristate "Freescale MPC83xx SPI controller"
119 depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
122 This enables using the Freescale MPC83xx SPI controller in master
125 Note, this driver uniquely supports the SPI controller on the MPC83xx
126 family of PowerPC processors. The MPC83xx uses a simple set of shift
127 registers for data (opposed to the CPM based descriptor model).
129 config SPI_OMAP_UWIRE
130 tristate "OMAP1 MicroWire"
131 depends on SPI_MASTER && ARCH_OMAP1
134 This hooks up to the MicroWire controller on OMAP1 chips.
137 bool "McSPI driver for OMAP24xx"
138 depends on SPI_MASTER && ARCH_OMAP24XX
140 SPI master controller for OMAP24xx McSPI modules.
143 tristate "PXA2xx SSP SPI master"
144 depends on SPI_MASTER && ARCH_PXA && EXPERIMENTAL
146 This enables using a PXA2xx SSP port as a SPI master controller.
147 The driver can be configured to use any SSP port and additional
148 documentation can be found a Documentation/spi/pxa2xx.
151 tristate "Samsung S3C24XX series SPI"
152 depends on SPI_MASTER && ARCH_S3C2410 && EXPERIMENTAL
154 SPI driver for Samsung S3C24XX series ARM SoCs
156 config SPI_S3C24XX_GPIO
157 tristate "Samsung S3C24XX series SPI by GPIO"
158 depends on SPI_MASTER && ARCH_S3C2410 && SPI_BITBANG && EXPERIMENTAL
160 SPI driver for Samsung S3C24XX series ARM SoCs using
161 GPIO lines to provide the SPI bus. This can be used where
162 the inbuilt hardware cannot provide the transfer mode, or
163 where the board is using non hardware connected pins.
165 # Add new SPI master controllers in alphabetical order above this line
169 # There are lots of SPI device types, with sensors and memory
170 # being probably the most widely used ones.
172 comment "SPI Protocol Masters"
173 depends on SPI_MASTER
176 tristate "SPI EEPROMs from most vendors"
177 depends on SPI_MASTER && SYSFS
179 Enable this driver to get read/write support to most SPI EEPROMs,
180 after you configure the board init code to know about each eeprom
181 on your target board.
183 This driver can also be built as a module. If so, the module
187 depends on SPI_MASTER
188 tristate "TSC2101 chip support"
190 Say Y here if you want support for the TSC2101 chip.
191 At the moment it provides basic register read / write interface
192 as well as a way to enable the MCLK clock.
195 tristate "User mode SPI device driver support"
196 depends on SPI_MASTER && EXPERIMENTAL
198 This supports user mode SPI protocol drivers.
200 Note that this application programming interface is EXPERIMENTAL
201 and hence SUBJECT TO CHANGE WITHOUT NOTICE while it stabilizes.
204 # Add new SPI protocol masters in alphabetical order above this line
207 # (slave support would go here)
209 endmenu # "SPI support"