diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 07c03b9eb126b2fe3a61467b55b49dc7a6c412ed..d89972beb12c05b5e8e3beb106a628e91176c01b 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -533,6 +533,13 @@ config SERIAL_S3C6400
 	  Serial port support for the Samsung S3C6400 and S3C6410
 	  SoCs
 
+config SERIAL_MAX3100
+	tristate "MAX3100 support"
+	depends on SPI
+	select SERIAL_CORE
+	help
+	  MAX3100 chip support
+
 config SERIAL_DZ
 	bool "DECstation DZ serial driver"
 	depends on MACH_DECSTATION && 32BIT
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 8844c0a039298f7f3f8d32576a19a97ff593d399..d438eb2a73defd29ca9cfab294fa95b20d09fc5f 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -43,6 +43,7 @@ obj-$(CONFIG_SERIAL_S3C2412) += s3c2412.o
 obj-$(CONFIG_SERIAL_S3C2440) += s3c2440.o
 obj-$(CONFIG_SERIAL_S3C24A0) += s3c24a0.o
 obj-$(CONFIG_SERIAL_S3C6400) += s3c6400.o
+obj-$(CONFIG_SERIAL_MAX3100) += max3100.o
 obj-$(CONFIG_SERIAL_IP22_ZILOG) += ip22zilog.o
 obj-$(CONFIG_SERIAL_MUX) += mux.o
 obj-$(CONFIG_SERIAL_68328) += 68328serial.o
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 83e4b3ff9cdaeda28c6803776eafd67129c00993..57a97e52e58d0339d0e3dfd1271e143e865d68a4 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -164,6 +164,9 @@
 /* NWPSERIAL */
 #define PORT_NWPSERIAL	85
 
+/* MAX3100 */
+#define PORT_MAX3100    86
+
 #ifdef __KERNEL__
 
 #include <linux/compiler.h>