--- /dev/null
+--- a/drivers/mtd/nand/Kconfig
++++ b/drivers/mtd/nand/Kconfig
+@@ -330,4 +330,8 @@
+ Enabling this option will enable you to use this to control
+ external NAND devices.
+
++config MTD_NAND_RB4XX
++ tristate "NAND flash driver for RouterBoard 4xx series"
++ depends on MTD_NAND && ATHEROS_AR71XX
++
+ endif # MTD_NAND
+--- a/drivers/mtd/nand/Makefile
++++ b/drivers/mtd/nand/Makefile
+@@ -28,6 +28,7 @@
+ obj-$(CONFIG_MTD_NAND_CM_X270) += cmx270_nand.o
+ obj-$(CONFIG_MTD_NAND_BASLER_EXCITE) += excite_nandflash.o
+ obj-$(CONFIG_MTD_NAND_PLATFORM) += plat_nand.o
++obj-$(CONFIG_MTD_NAND_RB4XX) += rb4xx_nand.o
+ obj-$(CONFIG_MTD_ALAUDA) += alauda.o
+ obj-$(CONFIG_MTD_NAND_PASEMI) += pasemi_nand.o
+ obj-$(CONFIG_MTD_NAND_ORION) += orion_nand.o