diff --git a/bindings/pci/pci-msm.txt b/bindings/pci/pci-msm.txt
index 6f3e41eac5bc..62a03e57ba9c 100644
--- a/bindings/pci/pci-msm.txt
+++ b/bindings/pci/pci-msm.txt
@@ -123,6 +123,7 @@ Main node
 		- "vreg-1.8-supply"		power supply for PCIe PHY
 		- "vreg-0.9-supply"		power supply for PCIe PHY
 		- "vreg-cx-supply"		power supply for PCIe core
+		- "vreg-mx-supply"		power supply for PCIe core/PHY
 		- "vreg-3.3-supply" (opt)	power supply for PCIe endpoint
 
 - qcom,<supply-name>-voltage-level:
@@ -134,8 +135,10 @@ Main node
 - qcom,bw-scale:
 	Usage: optional
 	Value type: <prop-encoded-array>
-	Definition: List of CX voltage corner and rate change clock frequency
-		pair for each PCIe GEN speed
+	Definition: Tuple consisting of CX and MX voltage corners, and rate
+		change clock frequencies for each supported PCIe Gen speed.
+		ex:
+		<[min CX voltage] [min MX voltage] [Rate change clk frequency]>
 
 interconnect-names:
 	Usage: optional
@@ -474,14 +477,30 @@ Example
 		vreg-1.8-supply = <&pm8150l_l3>;
 		vreg-0.9-supply = <&pm8150_l5>;
 		vreg-cx-supply = <&VDD_CX_LEVEL>;
+		vreg-mx-supply = <&VDD_MXA_LEVEL>;
 		vreg-3.3-supply = <&pm8150_l1>;
 		qcom,vreg-1.8-voltage-level = <1800000 1800000 1000>;
 		qcom,vreg-0.9-voltage-level = <950000 950000 24000>;
 		qcom,vreg-cx-voltage-level = <RPMH_REGULATOR_LEVEL_MAX
 						RPMH_REGULATOR_LEVEL_NOM 0>;
-		qcom,bw-scale = <RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen1 */
-				RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen2 */
-				RPMH_REGULATOR_LEVEL_NOM 100000000>; /* Gen3 */
+		qcom,vreg-mx-voltage-level = <RPMH_REGULATOR_LEVEL_MAX
+						RPMH_REGULATOR_LEVEL_NOM 0>;
+		qcom,bw-scale = /* Gen1 */
+				<RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen2 */
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen3 */
+				RPMH_REGULATOR_LEVEL_NOM
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				100000000
+				/* Gen4 */
+				RPMH_REGULATOR_LEVEL_NOM
+				RPMH_REGULATOR_LEVEL_NOM
+				100000000>;
 
 		interconnect-names = "icc_path";
 		interconnects = <&aggre2_noc MASTER_PCIE_0 &mc_virt SLAVE_EBI1>;
diff --git a/qcom/lahaina-pcie.dtsi b/qcom/lahaina-pcie.dtsi
index 9c106f0bd059..c72e6031377f 100644
--- a/qcom/lahaina-pcie.dtsi
+++ b/qcom/lahaina-pcie.dtsi
@@ -53,10 +53,18 @@
 		qcom,vreg-0p9-voltage-level = <880000 880000 47900>;
 		qcom,vreg-cx-voltage-level = <RPMH_REGULATOR_LEVEL_MAX
 						RPMH_REGULATOR_LEVEL_NOM 0>;
-		qcom,bw-scale =
-			<RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen1 */
-			RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen2 */
-			RPMH_REGULATOR_LEVEL_NOM 100000000>; /* Gen3 */
+		qcom,bw-scale = /* Gen1 */
+				<RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen2 */
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen3 */
+				RPMH_REGULATOR_LEVEL_NOM
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				100000000>;
 
 		interconnect-names = "icc_path";
 		interconnects = <&aggre2_noc MASTER_PCIE_0 &mc_virt SLAVE_EBI1>;
@@ -284,10 +292,18 @@
 		qcom,vreg-0p9-voltage-level = <880000 880000 99000>;
 		qcom,vreg-cx-voltage-level = <RPMH_REGULATOR_LEVEL_MAX
 						RPMH_REGULATOR_LEVEL_NOM 0>;
-		qcom,bw-scale =
-			<RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen1 */
-			RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen2 */
-			RPMH_REGULATOR_LEVEL_NOM 100000000>; /* Gen3 */
+		qcom,bw-scale = /* Gen1 */
+				<RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen2 */
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen3 */
+				RPMH_REGULATOR_LEVEL_NOM
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				100000000>;
 
 		interconnect-names = "icc_path";
 		interconnects = <&aggre2_noc MASTER_PCIE_1 &mc_virt SLAVE_EBI1>;
diff --git a/qcom/shima-pcie.dtsi b/qcom/shima-pcie.dtsi
index fce90dee366f..9d494201d261 100644
--- a/qcom/shima-pcie.dtsi
+++ b/qcom/shima-pcie.dtsi
@@ -53,10 +53,18 @@
 		qcom,vreg-0p9-voltage-level = <880000 880000 47900>;
 		qcom,vreg-cx-voltage-level = <RPMH_REGULATOR_LEVEL_MAX
 						RPMH_REGULATOR_LEVEL_NOM 0>;
-		qcom,bw-scale =
-			<RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen1 */
-			RPMH_REGULATOR_LEVEL_LOW_SVS 19200000 /* Gen2 */
-			RPMH_REGULATOR_LEVEL_NOM 100000000>; /* Gen3 */
+		qcom,bw-scale = /* Gen1 */
+				<RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen2 */
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				19200000
+				/* Gen3 */
+				RPMH_REGULATOR_LEVEL_NOM
+				RPMH_REGULATOR_LEVEL_LOW_SVS
+				100000000>;
 
 		interconnect-names = "icc_path";
 		interconnects = <&aggre1_noc MASTER_PCIE_0 &mc_virt SLAVE_EBI1>;