diff --git a/arch/arm/include/asm/arch-s5pc1xx/uart.h b/arch/arm/include/asm/arch-s5pc1xx/uart.h
index 2d7ad7ec98..f6eeab45cd 100644
--- a/arch/arm/include/asm/arch-s5pc1xx/uart.h
+++ b/arch/arm/include/asm/arch-s5pc1xx/uart.h
@@ -24,6 +24,12 @@
 #define __ASM_ARCH_UART_H_
 
 #ifndef __ASSEMBLY__
+/* baudrate rest value */
+union br_rest {
+	unsigned short	slot;		/* udivslot */
+	unsigned char	value;		/* ufracval */
+};
+
 struct s5p_uart {
 	unsigned int	ulcon;
 	unsigned int	ucon;
@@ -38,10 +44,12 @@ struct s5p_uart {
 	unsigned char	urxh;
 	unsigned char	res2[3];
 	unsigned int	ubrdiv;
-	unsigned short	udivslot;
-	unsigned char	res3[2];
-	unsigned char	res4[0x3d0];
+	union br_rest	rest;
+	unsigned char	res3[0x3d0];
 };
+
+static int use_divslot = 1;
+
 #endif	/* __ASSEMBLY__ */
 
 #endif
diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
index 77096643f1..36333c3d49 100644
--- a/drivers/serial/serial_s5p.c
+++ b/drivers/serial/serial_s5p.c
@@ -70,7 +70,11 @@ void serial_setbrg_dev(const int dev_index)
 	val = uclk / baudrate;
 
 	writel(val / 16 - 1, &uart->ubrdiv);
-	writew(udivslot[val % 16], &uart->udivslot);
+
+	if (use_divslot)
+		writew(udivslot[val % 16], &uart->rest.slot);
+	else
+		writeb(val % 16, &uart->rest.value);
 }
 
 /*