diff --git a/guest/pvmfw/src/device_assignment.rs b/guest/pvmfw/src/device_assignment.rs
index 2e4bb6d..ba13fa3 100644
--- a/guest/pvmfw/src/device_assignment.rs
+++ b/guest/pvmfw/src/device_assignment.rs
@@ -1349,7 +1349,7 @@
             node_path: CString::new("/bus0/backlight").unwrap(),
             reg: vec![[0x9, 0xFF].into()],
             interrupts: Some(into_fdt_prop(vec![0x0, 0xF, 0x4])),
-            iommus: Some(vec![]),
+            iommus: None,
         }];
 
         assert_eq!(device_info.assigned_devices, expected);
@@ -1455,7 +1455,6 @@
             (Ok(c"android,backlight,ignore-gctrl-reset"), Ok(Vec::new())),
             (Ok(c"compatible"), Ok(Vec::from(*b"android,backlight\0"))),
             (Ok(c"interrupts"), Ok(into_fdt_prop(vec![0x0, 0xF, 0x4]))),
-            (Ok(c"iommus"), Ok(Vec::new())),
             (Ok(c"phandle"), Ok(into_fdt_prop(vec![phandle.unwrap()]))),
             (Ok(c"reg"), Ok(into_fdt_prop(vec![0x0, 0x9, 0x0, 0xFF]))),
         ];
diff --git a/guest/pvmfw/testdata/expected_dt_with_dependency.dts b/guest/pvmfw/testdata/expected_dt_with_dependency.dts
index 7e0ad20..2823e1a 100644
--- a/guest/pvmfw/testdata/expected_dt_with_dependency.dts
+++ b/guest/pvmfw/testdata/expected_dt_with_dependency.dts
@@ -11,7 +11,6 @@
         dep = <&node_a_dep &common>;
         reg = <0x0 0xFF000 0x0 0x1>;
         interrupts = <0x0 0xF 0x4>;
-        iommus;
     };
 
     node_a_dep: node_a_dep {
diff --git a/guest/pvmfw/testdata/expected_dt_with_dependency_loop.dts b/guest/pvmfw/testdata/expected_dt_with_dependency_loop.dts
index 61031ab..b1ce262 100644
--- a/guest/pvmfw/testdata/expected_dt_with_dependency_loop.dts
+++ b/guest/pvmfw/testdata/expected_dt_with_dependency_loop.dts
@@ -8,7 +8,6 @@
         loop_dep = <&node_c_loop>;
         reg = <0x0 0xFF200 0x0 0x1>;
         interrupts = <0x0 0xF 0x4>;
-        iommus;
     };
 
     node_c_loop: node_c_loop {
diff --git a/guest/pvmfw/testdata/expected_dt_with_multiple_dependencies.dts b/guest/pvmfw/testdata/expected_dt_with_multiple_dependencies.dts
index dc8c357..d31c8cd 100644
--- a/guest/pvmfw/testdata/expected_dt_with_multiple_dependencies.dts
+++ b/guest/pvmfw/testdata/expected_dt_with_multiple_dependencies.dts
@@ -13,7 +13,6 @@
         dep = <&node_a_dep &common>;
         reg = <0x0 0xFF000 0x0 0x1>;
         interrupts = <0x0 0xF 0x4>;
-        iommus;
     };
 
     node_a_dep: node_a_dep {
@@ -38,7 +37,6 @@
         dep = <&node_b_dep1 &node_b_dep2>;
         reg = <0x00 0xFF100 0x00 0x01>;
         interrupts = <0x00 0x0F 0x04>;
-        iommus;
     };
 
     node_b_dep1: node_b_dep1 {