diff --git a/include/asm-powerpc/mpc52xx.h b/include/asm-powerpc/mpc52xx.h
index 1c48c6d..81ef10b 100644
--- a/include/asm-powerpc/mpc52xx.h
+++ b/include/asm-powerpc/mpc52xx.h
@@ -248,13 +248,19 @@
 
 #ifndef __ASSEMBLY__
 
+/* mpc52xx_common.c */
 extern unsigned int mpc52xx_find_ipb_freq(struct device_node *node);
 extern void mpc5200_setup_xlb_arbiter(void);
 extern void mpc52xx_declare_of_platform_devices(void);
+extern void mpc52xx_map_common_devices(void);
+extern int mpc52xx_set_psc_clkdiv(int psc_id, int clkdiv);
+extern void mpc52xx_restart(char *cmd);
 
+/* mpc52xx_pic.c */
 extern void mpc52xx_init_irq(void);
 extern unsigned int mpc52xx_get_irq(void);
 
+/* mpc52xx_pci.c */
 #ifdef CONFIG_PCI
 extern int __init mpc52xx_add_bridge(struct device_node *node);
 extern void __init mpc52xx_setup_pci(void);
@@ -262,9 +268,6 @@
 static inline void mpc52xx_setup_pci(void) { }
 #endif
 
-extern void __init mpc52xx_map_wdt(void);
-extern void mpc52xx_restart(char *cmd);
-
 #endif /* __ASSEMBLY__ */
 
 #ifdef CONFIG_PM