Au1550/Au1200/Au1300 SPI Controller

modulename: spi-au1550.ko

configname: CONFIG_SPI_AU1550

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>Au1550/Au1200/Au1300 SPI Controller
In linux kernel since version 2.6.24 (release Date: 2008-01-24)  
If you say yes to this option, support will be included for the
PSC SPI controller found on Au1550, Au1200 and Au1300 series.

source code:
drivers/spi/spi-au1550.c