diff --git a/qcom/sun.dtsi b/qcom/sun.dtsi
index 4d06e716..37250471 100644
--- a/qcom/sun.dtsi
+++ b/qcom/sun.dtsi
@@ -2262,6 +2262,14 @@
 		reg = <0x10c3000 0x1000>;
 	};
 
+	ufshc_dma_resv: ufshc_dma_resv_region {
+		/*
+		 * Restrict IOVA mappings for UFSHC buffers to the 3 GB region
+		 * from 0x1000 - 0xffffffff.
+		 */
+		iommu-addresses = <&ufshc_mem 0x0 0x1000>;
+	};
+
 	ufshc_mem: ufshc@1d84000 {
 		compatible = "qcom,ufshc";
 		reg = <0x1d84000 0x3000>,
@@ -2382,8 +2390,8 @@
 
 		iommus = <&apps_smmu 0x60 0x0>;
 		qcom,iommu-dma = "fastmap";
-		qcom,iommu-dma-addr-pool = <0x1000 0xFFFFF000>;
 		qcom,iommu-msi-size = <0x1000>;
+		memory-region = <&ufshc_dma_resv>;
 		shared-ice-cfg = <&ice_cfg>;
 		dma-coherent;