diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 8f573d2..ed1a46c 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -25,9 +25,8 @@
 
 void sdelay(unsigned long);
 
-struct gpmc_cs;
 void gpmc_init(void);
-void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
+void enable_gpmc_cs_config(const u32 *gpmc_config, const struct gpmc_cs *cs, u32 base,
 			u32 size);
 void omap_nand_switch_ecc(uint32_t, uint32_t);
 
diff --git a/arch/arm/include/asm/arch-omap3/sys_proto.h b/arch/arm/include/asm/arch-omap3/sys_proto.h
index 1be2b15..4c5aa99 100644
--- a/arch/arm/include/asm/arch-omap3/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap3/sys_proto.h
@@ -43,8 +43,8 @@
 int identify_nand_chip(int *mfr, int *id);
 void emif4_init(void);
 void gpmc_init(void);
-void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
-			u32 size);
+void enable_gpmc_cs_config(const u32 *gpmc_config, const struct gpmc_cs *cs,
+				u32 base, u32 size);
 
 void watchdog_init(void);
 void set_muxconf_regs(void);