diff --git a/arch/arm/boot/dts/amlogic/mesontm2.dtsi b/arch/arm/boot/dts/amlogic/mesontm2.dtsi
index 1c1bc9029863..60d7ff9babcf 100644
--- a/arch/arm/boot/dts/amlogic/mesontm2.dtsi
+++ b/arch/arm/boot/dts/amlogic/mesontm2.dtsi
@@ -212,6 +212,28 @@
 		mboxes = <&mailbox 0 &mailbox 1>;
 	};
 
+	mailbox_dsp: mhu@ff680150 {
+		status = "okay";
+		compatible = "amlogic, meson_mhu_dsp";
+		reg = <0xff680150 0x84>,   /* MHU registers */
+		      <0xff690150 0x84>,
+		      <0xfffdbc00 0x800>;   /* Payload area */
+		interrupts = <0 242 1>,   /* DSPA Receive */
+			     <0 244 1>,   /* DSPA Send */
+			     <0 246 1>,   /* DSPB Receive */
+			     <0 248 1>;   /* DSPB Send */
+		mbox-names = "dspa_to_ap",
+			     "ap_to_dspa",
+			     "dspb_to_ap",
+			     "ap_to_dspb";
+		#mbox-cells = <1>;
+		mboxes = <&mailbox_dsp 0>,
+			 <&mailbox_dsp 1>,
+			 <&mailbox_dsp 2>,
+			 <&mailbox_dsp 3>;
+		mbox-nums = <4>;
+	};
+
 	cpu_iomap {
 		compatible = "amlogic, iomap";
 		#address-cells = <1>;
diff --git a/arch/arm64/boot/dts/amlogic/mesontm2.dtsi b/arch/arm64/boot/dts/amlogic/mesontm2.dtsi
index 190fc6c48255..bef2ee51d981 100644
--- a/arch/arm64/boot/dts/amlogic/mesontm2.dtsi
+++ b/arch/arm64/boot/dts/amlogic/mesontm2.dtsi
@@ -201,6 +201,27 @@
 		mboxes = <&mailbox 0 &mailbox 1>;
 	};
 
+	mailbox_dsp: mhu@ff680150 {
+		status = "okay";
+		compatible = "amlogic, meson_mhu_dsp";
+		reg = <0x0 0xff680150 0x0 0x84>,   /* MHU registers */
+		      <0x0 0xff690150 0x0 0x84>,
+		      <0x0 0xfffdbc00 0x0 0x800>;   /* Payload area */
+		interrupts = <0 242 1>,   /* DSPA Receive */
+			     <0 244 1>,   /* DSPA Send */
+			     <0 246 1>,   /* DSPB Receive */
+			     <0 248 1>;   /* DSPB Send */
+		mbox-names = "dspa_to_ap",
+			     "ap_to_dspa",
+			     "dspb_to_ap",
+			     "ap_to_dspb";
+		#mbox-cells = <1>;
+		mboxes = <&mailbox_dsp 0>,
+			 <&mailbox_dsp 1>,
+			 <&mailbox_dsp 2>,
+			 <&mailbox_dsp 3>;
+		mbox-nums = <4>;
+	};
 	cpu_iomap {
 		compatible = "amlogic, iomap";
 		#address-cells = <2>;