diff --git a/pvmfw/platform.dts b/pvmfw/platform.dts
index a7b1de7..74439d9 100644
--- a/pvmfw/platform.dts
+++ b/pvmfw/platform.dts
@@ -37,6 +37,7 @@
 		ranges;
 		swiotlb: restricted_dma_reserved {
 			compatible = "restricted-dma-pool";
+			reg = <PLACEHOLDER4>;
 			size = <PLACEHOLDER2>;
 			alignment = <PLACEHOLDER2>;
 		};
diff --git a/pvmfw/src/fdt.rs b/pvmfw/src/fdt.rs
index 97db601..63a59a1 100644
--- a/pvmfw/src/fdt.rs
+++ b/pvmfw/src/fdt.rs
@@ -499,7 +499,7 @@
         fdt.root_mut()?.next_compatible(cstr!("restricted-dma-pool"))?.ok_or(FdtError::NotFound)?;
 
     if let Some(range) = swiotlb_info.fixed_range() {
-        node.appendprop_addrrange(
+        node.setprop_addrrange_inplace(
             cstr!("reg"),
             range.start.try_into().unwrap(),
             range.len().try_into().unwrap(),
@@ -507,6 +507,7 @@
         node.nop_property(cstr!("size"))?;
         node.nop_property(cstr!("alignment"))?;
     } else {
+        node.nop_property(cstr!("reg"))?;
         node.setprop_inplace(cstr!("size"), &swiotlb_info.size.to_be_bytes())?;
         node.setprop_inplace(cstr!("alignment"), &swiotlb_info.align.unwrap().to_be_bytes())?;
     }