diff options
Diffstat (limited to 'drivers/spi/Kconfig')
| -rw-r--r-- | drivers/spi/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index d310510..9b21c5d 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -51,6 +51,19 @@ config SPI_MASTER comment "SPI Master Controller Drivers" depends on SPI_MASTER +config SPI_BITBANG + tristate "Bitbanging SPI master" + depends on SPI_MASTER && EXPERIMENTAL + help + With a few GPIO pins, your system can bitbang the SPI protocol. + Select this to get SPI support through I/O pins (GPIO, parallel + port, etc). Or, some systems' SPI master controller drivers use + this code to manage the per-word or per-transfer accesses to the + hardware shift registers. + + This is library code, and is automatically selected by drivers that + need it. You only need to select this explicitly to support driver + modules that aren't part of this kernel tree. # # Add new SPI master controllers in alphabetical order above this line |