diff --git a/sun-peach-cnss-v8.dtsi b/sun-peach-cnss-v8.dtsi
index c51b6b36..cd7fd396 100644
--- a/sun-peach-cnss-v8.dtsi
+++ b/sun-peach-cnss-v8.dtsi
@@ -204,7 +204,7 @@
 
 		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 38520f13..8b4afe98 100644
--- a/sun-peach-cnss.dtsi
+++ b/sun-peach-cnss.dtsi
@@ -203,7 +203,7 @@
 
 		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>;
 		};
 	};