diff --git a/arch/arm/include/asm/arch-am33xx/sys_proto.h b/arch/arm/include/asm/arch-am33xx/sys_proto.h
index 4e78aaf..57fbfa4 100644
--- a/arch/arm/include/asm/arch-am33xx/sys_proto.h
+++ b/arch/arm/include/asm/arch-am33xx/sys_proto.h
@@ -40,6 +40,7 @@
 #endif
 void am33xx_spl_board_init(void);
 int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev);
+int am335x_get_mpu_vdd(int sil_rev, int frequency);
 int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency);
 #endif