diff --git a/qcom/msm-arm-smmu-kalama.dtsi b/qcom/msm-arm-smmu-kalama.dtsi
index d71dfe3c..82e25e78 100644
--- a/qcom/msm-arm-smmu-kalama.dtsi
+++ b/qcom/msm-arm-smmu-kalama.dtsi
@@ -325,4 +325,49 @@
 		compatible = "qcom,iommu-dma";
 		memory-region = <&system_cma>;
 	};
+
+	iommu_test_device {
+		compatible = "qcom,iommu-debug-test";
+
+		usecase0_apps {
+			compatible = "qcom,iommu-debug-usecase";
+			iommus = <&apps_smmu 0x400 0x0>;
+		};
+
+		usecase1_apps_fastmap {
+			compatible = "qcom,iommu-debug-usecase";
+			iommus = <&apps_smmu 0x400 0x0>;
+			qcom,iommu-dma = "fastmap";
+		};
+
+		usecase2_apps_atomic {
+			compatible = "qcom,iommu-debug-usecase";
+			iommus = <&apps_smmu 0x400 0x0>;
+			qcom,iommu-dma = "atomic";
+		};
+
+		usecase3_apps_dma {
+			compatible = "qcom,iommu-debug-usecase";
+			iommus = <&apps_smmu 0x400 0x0>;
+			dma-coherent;
+		};
+
+		usecase4_apps_secure {
+			compatible = "qcom,iommu-debug-usecase";
+			iommus = <&apps_smmu 0x400 0x0>;
+			qcom,iommu-dma = "atomic";
+			qcom,iommu-vmid = <0xa>; /* VMID_CP_PIXEL */
+		};
+
+		usecase5_kgsl {
+			compatible = "qcom,iommu-debug-usecase";
+			iommu = <&kgsl_smmu 0x7 0x0>;
+		};
+
+		usecase6_kgsl_dma {
+			compatible = "qcom,iommu-debug-usecase";
+			iommu = <&kgsl_smmu 0x7 0x0>;
+			dma-coherent;
+		};
+	};
 };