diff --git a/arch/arm/mach-rockchip/iomap.h b/arch/arm/mach-rockchip/iomap.h
index 6cbc5c1e1612..d7fe5f1f4dbf 100644
--- a/arch/arm/mach-rockchip/iomap.h
+++ b/arch/arm/mach-rockchip/iomap.h
@@ -41,12 +41,9 @@
 #define RK3188_DDR_PUBL_PHYS    0x20040000
 #define RK3188_DDR_PUBL_SIZE    SZ_16K
 #define RK3188_UART0_PHYS       0x10124000
-#define RK3188_UART0_SIZE       SZ_4K
 #define RK3188_UART1_PHYS       0x10126000
-#define RK3188_UART1_SIZE       SZ_4K
 #define RK3188_UART2_PHYS       0x20064000
-#define RK3188_UART2_SIZE       SZ_4K
 #define RK3188_UART3_PHYS       0x20068000
-#define RK3188_UART3_SIZE       SZ_4K
+#define RK3188_UART_SIZE        SZ_4K
 
 #endif
diff --git a/arch/arm/mach-rockchip/rk3188.c b/arch/arm/mach-rockchip/rk3188.c
index edffe72909e9..c0eb23c40e21 100644
--- a/arch/arm/mach-rockchip/rk3188.c
+++ b/arch/arm/mach-rockchip/rk3188.c
@@ -87,7 +87,7 @@ static struct map_desc rk3188_io_desc[] __initdata = {
 	{
 		.virtual	= (unsigned long) RK_DEBUG_UART_VIRT,
 		.pfn		= __phys_to_pfn(RK3188_UART2_PHYS),
-		.length		= RK3188_UART2_SIZE,
+		.length		= RK3188_UART_SIZE,
 		.type		= MT_DEVICE,
 	},
 };