diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
index 1cd64c1b3b31..cc454a5e6a52 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
+++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
@@ -45,11 +45,18 @@
 			reg = <0x00000000 0x54000000 0x0 0x03000000>;
 		};
 
+		/* For Audio DSP */
+		adsp_reserved: linux,adsp {
+			compatible = "shared-dma-pool";
+			reusable;
+			reg = <0x00000000 0x57000000 0x0 0x01000000>;
+		};
+		
 		/* global autoconfigured region for contiguous allocations */
 		linux,cma {
 			compatible = "shared-dma-pool";
 			reusable;
-			reg = <0x00000000 0x57000000 0x0 0x19000000>;
+			reg = <0x00000000 0x58000000 0x0 0x18000000>;
 			linux,cma-default;
 		};
 
@@ -110,6 +117,11 @@
 		      "dclkin.0", "dclkin.1", "dclkin.2";
 };
 
+&adsp {
+	status = "okay";
+	memory-region = <&adsp_reserved>;
+};
+
 &vspb {
 	status = "okay";
 };