--- a/drivers/spi/Kconfig
+++ b/drivers/spi/Kconfig
@@ -290,6 +290,12 @@ config SPI_PXA2XX
 	  The driver can be configured to use any SSP port and additional
 	  documentation can be found a Documentation/spi/pxa2xx.
 
+config SPI_RB4XX
+	tristate "Mikrotik RB4XX SPI master"
+	depends on SPI_MASTER && AR71XX_MACH_RB4XX
+	help
+	  SPI controller driver for the Mikrotik RB4xx series boards.
+
 config SPI_S3C24XX
 	tristate "Samsung S3C24XX series SPI"
 	depends on ARCH_S3C2410 && EXPERIMENTAL
--- a/drivers/spi/Makefile
+++ b/drivers/spi/Makefile
@@ -51,6 +51,7 @@ obj-$(CONFIG_SPI_SH_SCI)		+= spi_sh_sci.
 obj-$(CONFIG_SPI_SH_MSIOF)		+= spi_sh_msiof.o
 obj-$(CONFIG_SPI_STMP3XXX)		+= spi_stmp.o
 obj-$(CONFIG_SPI_NUC900)		+= spi_nuc900.o
+obj-$(CONFIG_SPI_RB4XX)			+= rb4xx_spi.o
 
 # special build for s3c24xx spi driver with fiq support
 spi_s3c24xx_hw-y			:= spi_s3c24xx.o