diff --git a/arch/loongarch/boot/dts/loongson2k1000.dtsi b/arch/loongarch/boot/dts/loongson2k1000.dtsi
index ae1c65e2c..1b1938d0a 100644
--- a/arch/loongarch/boot/dts/loongson2k1000.dtsi
+++ b/arch/loongarch/boot/dts/loongson2k1000.dtsi
@@ -856,6 +856,7 @@
 			reg = <0 0x400e0000 0 0x10000>;
 			interrupt-parent = <&liointc0>;
 			interrupts = <19 IRQ_TYPE_LEVEL_HIGH>;
+			dma-mask = <0xffffffff 0xffffffff>;
 			status = "disabled";
 		};