diff --git a/arch/arm/boot/dts/imx25.dtsi b/arch/arm/boot/dts/imx25.dtsi
index 972570568c01d699b2791ec2f4e3e95c7cb56d25..cf70df20b19ce601381ba78f3bdce81d3e881975 100644
--- a/arch/arm/boot/dts/imx25.dtsi
+++ b/arch/arm/boot/dts/imx25.dtsi
@@ -269,6 +269,7 @@
 				dmas = <&sdma 24 1 0>,
 				       <&sdma 25 1 0>;
 				dma-names = "rx", "tx";
+				fsl,fifo-depth = <15>;
 				status = "disabled";
 			};
 
@@ -329,6 +330,7 @@
 				dmas = <&sdma 28 1 0>,
 				       <&sdma 29 1 0>;
 				dma-names = "rx", "tx";
+				fsl,fifo-depth = <15>;
 				status = "disabled";
 			};