--- /dev/null
+--- a/arch/mips/include/asm/mach-lantiq/lantiq.h
++++ b/arch/mips/include/asm/mach-lantiq/lantiq.h
+@@ -48,6 +48,8 @@ extern struct clk *clk_get_ppe(void);
+ extern unsigned char ltq_boot_select(void);
+ /* find out what caused the last cpu reset */
+ extern int ltq_reset_cause(void);
++/* find out the soc type */
++extern int ltq_soc_type(void);
+
+ #define IOPORT_RESOURCE_START 0x10000000
+ #define IOPORT_RESOURCE_END 0xffffffff
+--- a/arch/mips/lantiq/prom.c
++++ b/arch/mips/lantiq/prom.c
+@@ -35,6 +35,11 @@ const char *get_system_type(void)
+ return soc_info.sys_type;
+ }
+
++int ltq_soc_type(void)
++{
++ return soc_info.type;
++}
++
+ void prom_free_prom_memory(void)
+ {
+ }