diff --git a/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h b/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
index 548d5f6..b6ea3e8 100644
--- a/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
+++ b/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
@@ -46,6 +46,9 @@
 #define mmio_clrsetbits_32(addr, clear, set) \
 		mmio_write_32(addr, (mmio_read_32(addr) & ~(clear)) | (set))
 
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
 void handle_suspend(void);
 void handle_dram(void);
 void stopwatch_init_usecs_expire(unsigned int usecs);