diff --git a/sun-peach-cnss-v8.dtsi b/sun-peach-cnss-v8.dtsi
index 3e2b6ac8..38350fc9 100644
--- a/sun-peach-cnss-v8.dtsi
+++ b/sun-peach-cnss-v8.dtsi
@@ -209,7 +209,7 @@
 
 		cnss_pci0_iommu_region_partition: cnss_pci0_iommu_region_partition {
 			/* address-cells =3 size-cells=2 from sun-pcie.dtsi */
-			iommu-addresses = <&cnss_pci0 0x0 0x0 0x0 0x0 0x88000000>,
+			iommu-addresses = <&cnss_pci0 0x0 0x0 0x0 0x0 0x18000000>,
 					  <&cnss_pci0 0x0 0x0 0xB0000000 0x0 0x50000000>;
 		};
 	};
diff --git a/sun-peach-cnss.dtsi b/sun-peach-cnss.dtsi
index 234feb43..ef0efe81 100644
--- a/sun-peach-cnss.dtsi
+++ b/sun-peach-cnss.dtsi
@@ -208,7 +208,7 @@
 
 		cnss_pci0_iommu_region_partition: cnss_pci0_iommu_region_partition {
 			/* address-cells =3 size-cells=2 from sun-pcie.dtsi */
-			iommu-addresses = <&cnss_pci0 0x0 0x0 0x0 0x0 0x88000000>,
+			iommu-addresses = <&cnss_pci0 0x0 0x0 0x0 0x0 0x18000000>,
 					  <&cnss_pci0 0x0 0x0 0xB0000000 0x0 0x50000000>;
 		};
 	};