diff --git a/tegra234.dtsi b/tegra234.dtsi
index 1678cb2..186551e 100644
--- a/tegra234.dtsi
+++ b/tegra234.dtsi
@@ -4315,6 +4315,12 @@
 			status = "okay";
 		};
 
+		smmu_test {
+			compatible = "nvidia,smmu_test";
+			iommus = <&smmu_niso0 TEGRA234_SID_SMMU_TEST>;
+			status = "okay";
+		};
+
 		cbb-fabric@13a00000 {
 			compatible = "nvidia,tegra234-cbb-fabric";
 			reg = <0x0 0x13a00000 0x0 0x400000>;