diff --git a/arch/arm/boot/dts/amlogic/mesong12b.dtsi b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
index c0b5e085e44c..b6dce428cba6 100644
--- a/arch/arm/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
@@ -1886,6 +1886,7 @@
 		reg-names = "adapter";
 		interrupts = <0 179 0>;
 		interrupt-names = "adapter-irq";
+		mem_alloc = <48>;
 	};
 
 	phycsi: phy-csi@ff650000 {
diff --git a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
index dbdd481cbe86..fb40bebb5f10 100644
--- a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
@@ -1886,6 +1886,7 @@
 		reg-names = "adapter";
 		interrupts = <0 179 0>;
 		interrupt-names = "adapter-irq";
+		mem_alloc = <48>;
 	};
 
 	phycsi: phy-csi@ff650000 {