diff --git a/qcom/monaco-qupv3.dtsi b/qcom/monaco-qupv3.dtsi
index f1eea377..530a3949 100644
--- a/qcom/monaco-qupv3.dtsi
+++ b/qcom/monaco-qupv3.dtsi
@@ -54,7 +54,7 @@
 		iommus = <&apps_smmu 0xe3 0x0>;
 		qcom,iommu-dma-addr-pool = <0x40000000 0xc0000000>;
 		qcom,iommu-geometry = <0x40000000 0x10000000>;
-		qcom,iommu-dma = "fastmap";
+		qcom,iommu-dma = "atomic";
 		ranges;
 		status = "ok";