diff --git a/include/dm/platform_data/atmel_serial.h b/include/dm/platform_data/atmel_serial.h
index 5d142693640..96da6f50287 100644
--- a/include/dm/platform_data/atmel_serial.h
+++ b/include/dm/platform_data/atmel_serial.h
@@ -8,7 +8,7 @@
 
 /* Information about a serial port */
 struct atmel_serial_plat {
-	uint32_t base_addr;
+	uintptr_t base_addr;
 };
 
 #endif