diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index d4b013b283c3680f63be0b9b8b05b4120ebf3777..e2079cf9266fd44c5f2bff2ab81826585cd65f9b 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -9,6 +9,7 @@ config CPU_S3C2410
 	depends on ARCH_S3C2410
 	select S3C2410_CLOCK
 	select S3C2410_GPIO
+	select CPU_LLSERIAL_S3C2410
 	select S3C2410_PM if PM
 	help
 	  Support for S3C2410 and S3C2410A family from the S3C24XX line
diff --git a/arch/arm/mach-s3c2412/Kconfig b/arch/arm/mach-s3c2412/Kconfig
index d5be5d053264da3079782e6abe8436e43759daec..8e8fe48ea47f24f9deb1419f5a0ed7c48693a5a3 100644
--- a/arch/arm/mach-s3c2412/Kconfig
+++ b/arch/arm/mach-s3c2412/Kconfig
@@ -7,6 +7,7 @@
 config CPU_S3C2412
 	bool
 	depends on ARCH_S3C2410
+	select CPU_LLSERIAL_S3C2440
 	select S3C2412_PM if PM
 	select S3C2412_DMA if S3C2410_DMA
 	help
diff --git a/arch/arm/mach-s3c2440/Kconfig b/arch/arm/mach-s3c2440/Kconfig
index e3bfda098c0f440a52ef2fbc4200857fab0d48c6..f1915bd61d15b862e4198c110a0a499a0f40e378 100644
--- a/arch/arm/mach-s3c2440/Kconfig
+++ b/arch/arm/mach-s3c2440/Kconfig
@@ -12,6 +12,7 @@ config CPU_S3C2440
 	select S3C2410_GPIO
 	select S3C2440_DMA if S3C2410_DMA
 	select CPU_S3C244X
+	select CPU_LLSERIAL_S3C2440
 	help
 	  Support for S3C2440 Samsung Mobile CPU based systems.
 
diff --git a/arch/arm/mach-s3c2442/Kconfig b/arch/arm/mach-s3c2442/Kconfig
index bf8d87abfab39def97a8c805bef77e142ac38319..88d5fd34fe3bca320a4146feb314ccc5c21163a1 100644
--- a/arch/arm/mach-s3c2442/Kconfig
+++ b/arch/arm/mach-s3c2442/Kconfig
@@ -11,6 +11,7 @@ config CPU_S3C2442
 	select S3C2410_GPIO
 	select S3C2410_PM if PM
 	select CPU_S3C244X
+	select CPU_LLSERIAL_S3C2440
 	help
 	  Support for S3C2442 Samsung Mobile CPU based systems.
 
diff --git a/arch/arm/mach-s3c2443/Kconfig b/arch/arm/mach-s3c2443/Kconfig
index c649bb2e7ce84ef7bddd9761d212480975dcfefa..14252f57375468d4d9809fe5e6475550962a688d 100644
--- a/arch/arm/mach-s3c2443/Kconfig
+++ b/arch/arm/mach-s3c2443/Kconfig
@@ -8,6 +8,7 @@ config CPU_S3C2443
 	bool
 	depends on ARCH_S3C2410
 	select S3C2443_DMA if S3C2410_DMA
+	select CPU_LLSERIAL_S3C2440
 	help
 	  Support for the S3C2443 SoC from the S3C24XX line
 
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig
index 21435c2c26aa988af961c5d495cbd3636907a9fa..6c206ab3a1d526a930d911b792386d5d13109f67 100644
--- a/arch/arm/plat-s3c/Kconfig
+++ b/arch/arm/plat-s3c/Kconfig
@@ -12,6 +12,34 @@ config PLAT_S3C
 	help
 	  Base platform code for any Samsung S3C device
 
+# low-level serial option nodes
+
+config CPU_LLSERIAL_S3C2410_ONLY
+	bool
+	depends on ARCH_S3C2410
+	default y if CPU_LLSERIAL_S3C2410 && !CPU_LLSERIAL_S3C2440
+
+config CPU_LLSERIAL_S3C2440_ONLY
+	bool
+	depends on ARCH_S3C2410
+	default y if CPU_LLSERIAL_S3C2440 && !CPU_LLSERIAL_S3C2410
+
+config CPU_LLSERIAL_S3C2410
+	bool
+	depends on ARCH_S3C2410
+	help
+	  Selected if there is an S3C2410 (or register compatible) serial
+	  low-level implementation needed
+
+config CPU_LLSERIAL_S3C2440
+	bool
+	depends on ARCH_S3C2410
+	help
+	  Selected if there is an S3C2440 (or register compatible) serial
+	  low-level implementation needed
+
+# boot configurations
+
 comment "Boot options"
 
 config S3C2410_BOOT_WATCHDOG