diff --git a/arch/arm/boot/dts/rk312x-android.dtsi b/arch/arm/boot/dts/rk312x-android.dtsi
index 096917e1a473..2bc74c7f714f 100644
--- a/arch/arm/boot/dts/rk312x-android.dtsi
+++ b/arch/arm/boot/dts/rk312x-android.dtsi
@@ -123,7 +123,11 @@
 		#size-cells = <1>;
 		ranges;
 
-		ramoops_mem: ramoops@00000000 {
+		cma_region: region@6a000000 {
+			reg = <0x6a000000 0x1000000>;
+		};
+
+		ramoops_mem: ramoops@68000000 {
 			reg = <0x68000000 0xf0000>;
 		};
 
@@ -133,6 +137,17 @@
 		};
 	};
 
+	ion {
+		compatible = "rockchip,ion";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		memory-region = <&cma_region>;
+
+		cma-heap {
+		};
+	};
+
 	ramoops {
 		compatible = "ramoops";
 		record-size = <0x0 0x20000>;