--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -326,6 +326,18 @@ config I2C_BLACKFIN_TWI_CLK_KHZ
 	help
 	  The unit of the TWI clock is kHz.
 
+config I2C_CNS3XXX
+	tristate "Cavium CNS3xxx I2C driver"
+	depends on ARCH_CNS3XXX
+	help
+	  Support for Cavium CNS3xxx I2C controller driver.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-cns3xxx.
+
+	  Please note that this driver might be needed to bring up other
+	  devices such as Cavium CNS3xxx Ethernet.
+
 config I2C_CPM
 	tristate "Freescale CPM1 or CPM2 (MPC8xx/826x)"
 	depends on (CPM1 || CPM2) && OF_I2C
--- a/drivers/i2c/busses/Makefile
+++ b/drivers/i2c/busses/Makefile
@@ -83,6 +83,7 @@ obj-$(CONFIG_I2C_ELEKTOR)	+= i2c-elektor
 obj-$(CONFIG_I2C_PCA_ISA)	+= i2c-pca-isa.o
 obj-$(CONFIG_I2C_SIBYTE)	+= i2c-sibyte.o
 obj-$(CONFIG_I2C_STUB)		+= i2c-stub.o
+obj-$(CONFIG_I2C_CNS3XXX)	+= i2c-cns3xxx.o
 obj-$(CONFIG_SCx200_ACB)	+= scx200_acb.o
 obj-$(CONFIG_SCx200_I2C)	+= scx200_i2c.o