diff --git a/arch/arm/boot/dts/amlogic/mesong12b.dtsi b/arch/arm/boot/dts/amlogic/mesong12b.dtsi
index 5a51224e02e4..af8d789785f3 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 74b706c976cb..9e04275a5d03 100644
--- a/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesong12b.dtsi
@@ -1896,6 +1896,7 @@
 		reg-names = "adapter";
 		interrupts = <0 179 0>;
 		interrupt-names = "adapter-irq";
+		mem_alloc = <48>;
 	};
 
 	phycsi: phy-csi@ff650000 {