diff --git a/arch/arm/include/asm/arch-mx31/sys_proto.h b/arch/arm/include/asm/arch-mx31/sys_proto.h
index 162644284a2af7bb72504cb35be6cdb473f6c6fb..674b25cff40ad55ce17d6966fa3f220050e2c503 100644
--- a/arch/arm/include/asm/arch-mx31/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx31/sys_proto.h
@@ -5,10 +5,10 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef _SYS_PROTO_H_
-#define _SYS_PROTO_H_
+#ifndef _MX31_SYS_PROTO_H_
+#define _MX31_SYS_PROTO_H_
 
-#include "../arch-imx/cpu.h"
+#include <asm/imx-common/sys_proto.h>
 
 struct mxc_weimcs {
 	u32 upper;
@@ -18,5 +18,4 @@ struct mxc_weimcs {
 
 void mxc_setup_weimcs(int cs, const struct mxc_weimcs *weimcs);
 int mxc_mmc_init(bd_t *bis);
-u32 get_cpu_rev(void);
 #endif
diff --git a/arch/arm/include/asm/arch-mx35/sys_proto.h b/arch/arm/include/asm/arch-mx35/sys_proto.h
index 35c03520aa2113b3542ba6e081efe498c804faed..0979fda48764d6b5aa8cafd05f9bb086051f35a3 100644
--- a/arch/arm/include/asm/arch-mx35/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx35/sys_proto.h
@@ -5,12 +5,12 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef _SYS_PROTO_H_
-#define _SYS_PROTO_H_
+#ifndef _MX35_SYS_PROTO_H_
+#define _MX35_SYS_PROTO_H_
 
-u32 get_cpu_rev(void);
-void mx3_setup_sdram_bank(u32 start_address, u32 ddr2_config,
-	u32 row, u32 col, u32 dsize, u32 refresh);
-#define is_soc_rev(rev)	((get_cpu_rev() & 0xFF) - rev)
+#include <asm/imx-common/sys_proto.h>
+
+void mx3_setup_sdram_bank(u32 start_address, u32 ddr2_config, u32 row,
+			  u32 col, u32 dsize, u32 refresh);
 
 #endif
diff --git a/arch/arm/include/asm/arch-mx5/sys_proto.h b/arch/arm/include/asm/arch-mx5/sys_proto.h
index b06c77f65c73ddf1d07469d6ba1a00e4d4d2ed8a..16c9b766d9a7df8fec7332c1c4084a2eea283ca9 100644
--- a/arch/arm/include/asm/arch-mx5/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx5/sys_proto.h
@@ -5,24 +5,4 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef _SYS_PROTO_H_
-#define _SYS_PROTO_H_
-
-#include "../arch-imx/cpu.h"
-
-#define is_soc_rev(rev)	((get_cpu_rev() & 0xFF) - rev)
-u32 get_cpu_rev(void);
-unsigned imx_ddr_size(void);
-void sdelay(unsigned long);
-void set_chipselect_size(int const);
-
-/*
- * Initializes on-chip ethernet controllers.
- * to override, implement board_eth_init()
- */
-
-int fecmxc_initialize(bd_t *bis);
-u32 get_ahb_clk(void);
-u32 get_periph_clk(void);
-
-#endif
+#include <asm/imx-common/sys_proto.h>
diff --git a/arch/arm/include/asm/arch-mx6/sys_proto.h b/arch/arm/include/asm/arch-mx6/sys_proto.h
index eee8ca8af710988a4a5c38b09b68cf973dc8085e..16c9b766d9a7df8fec7332c1c4084a2eea283ca9 100644
--- a/arch/arm/include/asm/arch-mx6/sys_proto.h
+++ b/arch/arm/include/asm/arch-mx6/sys_proto.h
@@ -5,47 +5,4 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef _SYS_PROTO_H_
-#define _SYS_PROTO_H_
-
-#include <asm/imx-common/regs-common.h>
-#include "../arch-imx/cpu.h"
-
-#define soc_rev() (get_cpu_rev() & 0xFF)
-#define is_soc_rev(rev) (soc_rev() == rev)
-
-u32 get_nr_cpus(void);
-u32 get_cpu_rev(void);
-u32 get_cpu_speed_grade_hz(void);
-u32 get_cpu_temp_grade(int *minc, int *maxc);
-
-/* returns MXC_CPU_ value */
-#define cpu_type(rev) (((rev) >> 12) & 0xff)
-
-/* both macros return/take MXC_CPU_ constants */
-#define get_cpu_type()	(cpu_type(get_cpu_rev()))
-#define is_cpu_type(cpu) (get_cpu_type() == cpu)
-
-const char *get_imx_type(u32 imxtype);
-unsigned imx_ddr_size(void);
-void set_chipselect_size(int const);
-
-#define is_mx6dqp() (is_cpu_type(MXC_CPU_MX6QP) || is_cpu_type(MXC_CPU_MX6DP))
-
-/*
- * Initializes on-chip ethernet controllers.
- * to override, implement board_eth_init()
- */
-
-int fecmxc_initialize(bd_t *bis);
-u32 get_ahb_clk(void);
-u32 get_periph_clk(void);
-
-int mxs_reset_block(struct mxs_register_32 *reg);
-int mxs_wait_mask_set(struct mxs_register_32 *reg,
-		       uint32_t mask,
-		       unsigned int timeout);
-int mxs_wait_mask_clr(struct mxs_register_32 *reg,
-		       uint32_t mask,
-		       unsigned int timeout);
-#endif
+#include <asm/imx-common/sys_proto.h>
diff --git a/arch/arm/include/asm/arch-mxs/sys_proto.h b/arch/arm/include/asm/arch-mxs/sys_proto.h
index d6e9fdbb92e33f9507cd9c0023d43c5ca4bbeb2e..20ff101a2bf64898f6bb497d8aa0b8fbe5679649 100644
--- a/arch/arm/include/asm/arch-mxs/sys_proto.h
+++ b/arch/arm/include/asm/arch-mxs/sys_proto.h
@@ -7,19 +7,10 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#ifndef __SYS_PROTO_H__
-#define __SYS_PROTO_H__
+#ifndef __MXS_SYS_PROTO_H__
+#define __MXS_SYS_PROTO_H__
 
-#include <asm/imx-common/regs-common.h>
-#include <../arch-imx/cpu.h>
-
-int mxs_reset_block(struct mxs_register_32 *reg);
-int mxs_wait_mask_set(struct mxs_register_32 *reg,
-		       uint32_t mask,
-		       unsigned int timeout);
-int mxs_wait_mask_clr(struct mxs_register_32 *reg,
-		       uint32_t mask,
-		       unsigned int timeout);
+#include <asm/imx-common/sys_proto.h>
 
 int mxsmmc_initialize(bd_t *bis, int id, int (*wp)(int), int (*cd)(int));
 
diff --git a/arch/arm/include/asm/imx-common/sys_proto.h b/arch/arm/include/asm/imx-common/sys_proto.h
new file mode 100644
index 0000000000000000000000000000000000000000..6954ee918e0bec13fd9c170d2da228c3d962c7b8
--- /dev/null
+++ b/arch/arm/include/asm/imx-common/sys_proto.h
@@ -0,0 +1,46 @@
+/*
+ * (C) Copyright 2009
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _SYS_PROTO_H_
+#define _SYS_PROTO_H_
+
+#include <asm/imx-common/regs-common.h>
+#include <common.h>
+#include "../arch-imx/cpu.h"
+
+#define soc_rev() (get_cpu_rev() & 0xFF)
+#define is_soc_rev(rev) (soc_rev() == rev)
+
+/* returns MXC_CPU_ value */
+#define cpu_type(rev) (((rev) >> 12) & 0xff)
+/* both macros return/take MXC_CPU_ constants */
+#define get_cpu_type() (cpu_type(get_cpu_rev()))
+#define is_cpu_type(cpu) (get_cpu_type() == cpu)
+
+#define is_mx6dqp() (is_cpu_type(MXC_CPU_MX6QP) || is_cpu_type(MXC_CPU_MX6DP))
+
+u32 get_nr_cpus(void);
+u32 get_cpu_rev(void);
+u32 get_cpu_speed_grade_hz(void);
+u32 get_cpu_temp_grade(int *minc, int *maxc);
+const char *get_imx_type(u32 imxtype);
+u32 imx_ddr_size(void);
+void sdelay(unsigned long);
+void set_chipselect_size(int const);
+
+/*
+ * Initializes on-chip ethernet controllers.
+ * to override, implement board_eth_init()
+ */
+int fecmxc_initialize(bd_t *bis);
+u32 get_ahb_clk(void);
+u32 get_periph_clk(void);
+
+int mxs_reset_block(struct mxs_register_32 *reg);
+int mxs_wait_mask_set(struct mxs_register_32 *reg, u32 mask, u32 timeout);
+int mxs_wait_mask_clr(struct mxs_register_32 *reg, u32 mask, u32 timeout);
+#endif