diff --git a/bindings/pci/msm_ep_pcie.txt b/bindings/pci/msm_ep_pcie.txt
index c364f472cc0b..425bddc9533d 100644
--- a/bindings/pci/msm_ep_pcie.txt
+++ b/bindings/pci/msm_ep_pcie.txt
@@ -33,6 +33,8 @@ Required properties:
 Optional Properties:
   - qcom,<supply-name>-voltage-level: specifies voltage levels for supply.
     Should be specified in pairs (max, min, optimal), units uV.
+  - qcom,vreg-mx-voltage-level: Support PCIe Gen4 on sdxlemur by scaling MX to
+    appropriate voltage.
   - clock-names: list of names of clock inputs.
 		     Should be "pcie_pipe_clk",
 				"pcie_aux_clk", "pcie_cfg_ahb_clk",
diff --git a/qcom/sdxlemur.dtsi b/qcom/sdxlemur.dtsi
index 114324fb5276..94ba23bf03ef 100644
--- a/qcom/sdxlemur.dtsi
+++ b/qcom/sdxlemur.dtsi
@@ -936,7 +936,7 @@
 		vreg-0p9-supply = <&pmx65_l4>;
 		vreg-mx-supply = <&VDD_MXA_LEVEL>;
 
-		qcom,vreg-1p8-voltage-level = <1200000 1200000 3000>;
+		qcom,vreg-1p8-voltage-level = <1200000 1200000 30000>;
 		qcom,vreg-0p9-voltage-level = <912000 912000 132000>;
 		qcom,vreg-mx-voltage-level = <RPMH_REGULATOR_LEVEL_MAX RPMH_REGULATOR_LEVEL_NOM 0>;