diff --git a/arch/arm/dts/kirkwood-km_common.dtsi b/arch/arm/dts/kirkwood-km_common.dtsi
index 75dc839..9d0fc51 100644
--- a/arch/arm/dts/kirkwood-km_common.dtsi
+++ b/arch/arm/dts/kirkwood-km_common.dtsi
@@ -22,6 +22,7 @@
 
 		serial@12000 {
 			status = "okay";
+			clock-frequency = <200000000>;
 		};
 	};
 
diff --git a/board/keymile/km_arm/Kconfig b/board/keymile/km_arm/Kconfig
index 7da052f..335a454 100644
--- a/board/keymile/km_arm/Kconfig
+++ b/board/keymile/km_arm/Kconfig
@@ -42,6 +42,7 @@
 	def_bool y
 	select BOARD_LATE_INIT
 	select DM
+	select DM_SERIAL
 	select DM_SPI
 	select DM_SPI_FLASH
 	imply CMD_CRAMFS
diff --git a/include/configs/km/km_arm.h b/include/configs/km/km_arm.h
index 8b0b665..96227b1 100644
--- a/include/configs/km/km_arm.h
+++ b/include/configs/km/km_arm.h
@@ -61,15 +61,6 @@
 #define CONFIG_SKIP_LOWLEVEL_INIT	/* disable board lowlevel_init */
 
 /*
- * NS16550 Configuration
- */
-#define CONFIG_SYS_NS16550_SERIAL
-#define CONFIG_SYS_NS16550_REG_SIZE	(-4)
-#define CONFIG_SYS_NS16550_CLK		CONFIG_SYS_TCLK
-#define CONFIG_SYS_NS16550_COM1		KW_UART0_BASE
-#define CONFIG_SYS_NS16550_COM2		KW_UART1_BASE
-
-/*
  * For booting Linux, the board info and command line data
  * have to be in the first 8 MB of memory, since this is
  * the maximum mapped by the Linux kernel during initialization.