diff --git a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
index 7e6cffdc5a55..778174a7d649 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-bananapi-bpi-r64.dts
@@ -71,6 +71,7 @@
 
 	memory@40000000 {
 		reg = <0 0x40000000 0 0x40000000>;
+		device_type = "memory";
 	};
 
 	reg_1p8v: regulator-1p8v {
diff --git a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
index 993f033d0bf0..810575de6670 100644
--- a/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7622-rfb1.dts
@@ -57,6 +57,7 @@
 
 	memory@40000000 {
 		reg = <0 0x40000000 0 0x20000000>;
+		device_type = "memory";
 	};
 
 	reg_1p8v: regulator-1p8v {