diff --git a/arch/arm/mach-at91/include/mach/sama5d3.h b/arch/arm/mach-at91/include/mach/sama5d3.h
index 6dc81ee38048c3ee1e874e37352fccea5adcef0b..31096a8aaf1d507287d62f6ef8250096f7ee09ea 100644
--- a/arch/arm/mach-at91/include/mach/sama5d3.h
+++ b/arch/arm/mach-at91/include/mach/sama5d3.h
@@ -64,6 +64,14 @@
 #define SAMA5D3_ID_TRNG		45	/* True Random Generator Number */
 #define SAMA5D3_ID_IRQ0		47	/* Advanced Interrupt Controller (IRQ0) */
 
+/*
+ * User Peripheral physical base addresses.
+ */
+#define SAMA5D3_BASE_USART0	0xf001c000
+#define SAMA5D3_BASE_USART1	0xf0020000
+#define SAMA5D3_BASE_USART2	0xf8020000
+#define SAMA5D3_BASE_USART3	0xf8024000
+
 /*
  * Internal Memory
  */