diff --git a/target/linux/ramips/dts/W2914NSV2.dtsi b/target/linux/ramips/dts/W2914NSV2.dtsi
index c842b0099b..e80b1877d4 100644
--- a/target/linux/ramips/dts/W2914NSV2.dtsi
+++ b/target/linux/ramips/dts/W2914NSV2.dtsi
@@ -55,6 +55,7 @@
 		compatible = "jedec,spi-nor";
 		reg = <0>;
 		spi-max-frequency = <10000000>;
+		m25p,chunked-io = <32>;
 
 		partition@0 {
 			label = "u-boot";