diff --git a/qcom/sun-oemvm.dtsi b/qcom/sun-oemvm.dtsi
index 48666a02..ac30bb4f 100644
--- a/qcom/sun-oemvm.dtsi
+++ b/qcom/sun-oemvm.dtsi
@@ -134,6 +134,20 @@
 					base = <0x0 0xFFF00000>;
 				};
 			};
+
+			test-dbl-oemvm {
+				vdevice-type = "doorbell";
+				generate = "/hypervisor/test-dbl-oemvm";
+				qcom,label = <0x5>;
+				peer-default;
+			};
+
+			test-dbl-oemvm-source {
+				vdevice-type = "doorbell-source";
+				generate = "/hypervisor/test-dbl-oemvm-source";
+				qcom,label = <0x5>;
+				peer-default;
+			};
 		};
 	};
 
@@ -176,4 +190,9 @@
 			     <GIC_PPI 12 (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_LOW)>;
 		clock-frequency = <19200000>;
 	};
+
+	qcom,test-dbl-oemvm {
+		compatible = "qcom,gh-dbl";
+		qcom,label = <0x5>;
+	};
 };
diff --git a/qcom/sun-vm.dtsi b/qcom/sun-vm.dtsi
index 290dce39..290b8f84 100644
--- a/qcom/sun-vm.dtsi
+++ b/qcom/sun-vm.dtsi
@@ -173,6 +173,20 @@
 				};
 			};
 
+			test-dbl-tuivm {
+				vdevice-type = "doorbell";
+				generate = "/hypervisor/test-dbl-tuivm";
+				qcom,label = <0x4>;
+				peer-default;
+			};
+
+			test-dbl-tuivm-source {
+				vdevice-type = "doorbell-source";
+				generate = "/hypervisor/test-dbl-tuivm-source";
+				qcom,label = <0x4>;
+				peer-default;
+			};
+
 			ddump-shm {
 				vdevice-type = "shm-doorbell";
 				generate = "/hypervisor/ddump-shm";
@@ -324,6 +338,11 @@
 		qcom,support-hypervisor;
 	};
 
+	qcom,test-dbl-tuivm {
+		compatible = "qcom,gh-dbl";
+		qcom,label = <0x4>;
+	};
+
 	qcom,gunyah-panic-notifier {
 		compatible = "qcom,gh-panic-notifier";
 		gunyah-label = <9>;
diff --git a/qcom/sun.dtsi b/qcom/sun.dtsi
index daaacaf5..4a22d9e8 100644
--- a/qcom/sun.dtsi
+++ b/qcom/sun.dtsi
@@ -2502,6 +2502,16 @@
 	thermal_zones: thermal-zones {
 	};
 
+	qcom,test-dbl-tuivm {
+		compatible = "qcom,gh-dbl";
+		qcom,label = <0x4>;
+	};
+
+	qcom,test-dbl-oemvm {
+		compatible = "qcom,gh-dbl";
+		qcom,label = <0x5>;
+	};
+
 	qcom,gunyah-panic-notifier {
 		compatible = "qcom,gh-panic-notifier";
 		qcom,primary-vm;