BCM2835 SPI auxiliary controller

modulename: spi-bcm2835aux.ko

configname: CONFIG_SPI_BCM2835AUX

Linux Kernel Configuration
└─>Device Drivers
└─>SPI support
└─>BCM2835 SPI auxiliary controller
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This selects a driver for the Broadcom BCM2835 SPI aux master.

The BCM2835 contains two types of SPI master controller; the
"universal SPI master", and the regular SPI controller.
This driver is for the universal/auxiliary SPI controller.

source code: