diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi
index acb91908bd74..dde969a140b4 100644
--- a/arch/arm/boot/dts/sama5d2.dtsi
+++ b/arch/arm/boot/dts/sama5d2.dtsi
@@ -701,6 +701,7 @@
 						 AT91_XDMAC_DT_PER_IF(1) |
 						 AT91_XDMAC_DT_PERID(14))>;
 					dma-names = "tx", "rx";
+					atmel,fifo-size = <32>;
 					status = "disabled";
 				};
 
@@ -879,6 +880,7 @@
 						 AT91_XDMAC_DT_PER_IF(1) |
 						 AT91_XDMAC_DT_PERID(16))>;
 					dma-names = "tx", "rx";
+					atmel,fifo-size = <32>;
 					status = "disabled";
 				};
 			};