Xilinx SPI controller common module

modulename: spi-xilinx.ko

configname: CONFIG_SPI_XILINX

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>Xilinx SPI controller common module
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
This exposes the SPI controller IP from the Xilinx EDK.

See the "OPB Serial Peripheral Interface (SPI) (v1.00e)"
Product Specification document (DS464) for hardware details.

Or for the DS570, see "XPS Serial Peripheral Interface (SPI) (v2.00b)"

source code:
drivers/spi/spi-xilinx.c