uses driver model and requires a device tree binding to operate.
please refer to doc/device-tree-bindings/spi/spi-ath79.txt.
+config ATMEL_QSPI
+ bool "Atmel Quad SPI Controller"
+ depends on ARCH_AT91
+ help
+ Enable the Atmel Quad SPI controller in master mode. This driver
+ does not support generic SPI. The implementation supports only the
+ spi-mem interface.
+
config ATMEL_SPI
bool "Atmel SPI driver"
default y if ARCH_AT91