diff --git a/qcom/msm-arm-smmu-sun.dtsi b/qcom/msm-arm-smmu-sun.dtsi
index 94b24551..1c09b680 100644
--- a/qcom/msm-arm-smmu-sun.dtsi
+++ b/qcom/msm-arm-smmu-sun.dtsi
@@ -275,7 +275,7 @@
 			compatible = "qcom,qsmmuv500-tbu", "qcom,qtb500";
 			reg = <0x7d3000 0x1000>;
 			qcom,stream-id-range = <0xc00 0x400>;
-			qcom,iova-width = <34>;
+			qcom,iova-width = <32>;
 			interconnects = <&nsp_noc MASTER_CDSP_PROC &mc_virt SLAVE_EBI1>;
 			qcom,num-qtb-ports = <2>;
 		};
@@ -293,7 +293,7 @@
 			compatible = "qcom,qsmmuv500-tbu", "qcom,qtb500";
 			reg = <0x16cd000 0x1000>;
 			qcom,stream-id-range = <0x1400 0x400>;
-			qcom,iova-width = <36>;
+			qcom,iova-width = <32>;
 			interconnects = <&pcie_noc MASTER_PCIE_3 &mc_virt SLAVE_EBI1>;
 			qcom,num-qtb-ports = <1>;
 			qcom,opt-out-tbu-halting;
@@ -303,7 +303,7 @@
 			compatible = "qcom,qsmmuv500-tbu", "qcom,qtb500";
 			reg = <0x17d1000 0x1000>;
 			qcom,stream-id-range = <0x1800 0x400>;
-			qcom,iova-width = <36>;
+			qcom,iova-width = <32>;
 			interconnects = <&mmss_noc MASTER_VIDEO_EVA &mc_virt SLAVE_EBI1>;
 			qcom,num-qtb-ports = <2>;
 		};