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: