diff --git a/arch/arm/include/asm/arch-rockchip/sys_proto.h b/arch/arm/include/asm/arch-rockchip/sys_proto.h
index 35423e1ba0..e428d59336 100644
--- a/arch/arm/include/asm/arch-rockchip/sys_proto.h
+++ b/arch/arm/include/asm/arch-rockchip/sys_proto.h
@@ -7,4 +7,27 @@
 #ifndef _ASM_ARCH_SYS_PROTO_H
 #define _ASM_ARCH_SYS_PROTO_H
 
+#ifdef CONFIG_ROCKCHIP_RK3288
+#include <asm/armv7.h>
+
+static void configure_l2ctlr(void)
+{
+	uint32_t l2ctlr;
+
+	l2ctlr = read_l2ctlr();
+	l2ctlr &= 0xfffc0000; /* clear bit0~bit17 */
+
+	/*
+	* Data RAM write latency: 2 cycles
+	* Data RAM read latency: 2 cycles
+	* Data RAM setup latency: 1 cycle
+	* Tag RAM write latency: 1 cycle
+	* Tag RAM read latency: 1 cycle
+	* Tag RAM setup latency: 1 cycle
+	*/
+	l2ctlr |= (1 << 3 | 1 << 0);
+	write_l2ctlr(l2ctlr);
+}
+#endif /* CONFIG_ROCKCHIP_RK3288 */
+
 #endif /* _ASM_ARCH_SYS_PROTO_H */
diff --git a/arch/arm/mach-rockchip/rk3288-board-spl.c b/arch/arm/mach-rockchip/rk3288-board-spl.c
index 8a1066ccf8..23af653454 100644
--- a/arch/arm/mach-rockchip/rk3288-board-spl.c
+++ b/arch/arm/mach-rockchip/rk3288-board-spl.c
@@ -13,7 +13,6 @@
 #include <malloc.h>
 #include <ram.h>
 #include <spl.h>
-#include <asm/armv7.h>
 #include <asm/gpio.h>
 #include <asm/io.h>
 #include <asm/arch/bootrom.h>
@@ -21,6 +20,7 @@
 #include <asm/arch/hardware.h>
 #include <asm/arch/periph.h>
 #include <asm/arch/sdram.h>
+#include <asm/arch/sys_proto.h>
 #include <asm/arch/timer.h>
 #include <dm/pinctrl.h>
 #include <dm/root.h>
@@ -81,25 +81,6 @@ u32 spl_boot_mode(const u32 boot_device)
 	return MMCSD_MODE_RAW;
 }
 
-static void configure_l2ctlr(void)
-{
-	uint32_t l2ctlr;
-
-	l2ctlr = read_l2ctlr();
-	l2ctlr &= 0xfffc0000; /* clear bit0~bit17 */
-
-	/*
-	* Data RAM write latency: 2 cycles
-	* Data RAM read latency: 2 cycles
-	* Data RAM setup latency: 1 cycle
-	* Tag RAM write latency: 1 cycle
-	* Tag RAM read latency: 1 cycle
-	* Tag RAM setup latency: 1 cycle
-	*/
-	l2ctlr |= (1 << 3 | 1 << 0);
-	write_l2ctlr(l2ctlr);
-}
-
 #ifdef CONFIG_SPL_MMC_SUPPORT
 static int configure_emmc(struct udevice *pinctrl)
 {