diff --git a/qcom/sun-cdp.dtsi b/qcom/sun-cdp.dtsi
index bd293895..36c1069d 100644
--- a/qcom/sun-cdp.dtsi
+++ b/qcom/sun-cdp.dtsi
@@ -150,6 +150,13 @@
 	vdda-qref-supply = <&pm_v8i_l3>;
 	vdda-qref-max-microamp = <64500>;
 
+	/*
+	 * Refer to Sun's Power Grid Analysis document.
+	 * Add vote for REFGEN_VDD_A_0P9/VDD_A_PCIE_0_0P9 regulator.
+	 */
+	vdda-refgen-supply = <&pm_v6f_l1>;
+	vdda-refgen-max-microamp = <206000>;
+
 	status = "ok";
 };
 
diff --git a/qcom/sun-mtp.dtsi b/qcom/sun-mtp.dtsi
index 9fcb42ab..5772408c 100644
--- a/qcom/sun-mtp.dtsi
+++ b/qcom/sun-mtp.dtsi
@@ -211,6 +211,13 @@
 	vdda-qref-supply = <&pm_v8i_l3>;
 	vdda-qref-max-microamp = <64500>;
 
+	/*
+	 * Refer to Sun's Power Grid Analysis document.
+	 * Add vote for REFGEN_VDD_A_0P9/VDD_A_PCIE_0_0P9 regulator.
+	 */
+	vdda-refgen-supply = <&pm_v6f_l1>;
+	vdda-refgen-max-microamp = <206000>;
+
 	status = "ok";
 };
 
diff --git a/qcom/sun-qrd.dtsi b/qcom/sun-qrd.dtsi
index 42585748..f92f8141 100644
--- a/qcom/sun-qrd.dtsi
+++ b/qcom/sun-qrd.dtsi
@@ -150,6 +150,13 @@
 	vdda-qref-supply = <&pm_v8i_l3>;
 	vdda-qref-max-microamp = <64500>;
 
+	/*
+	 * Refer to Sun's Power Grid Analysis document.
+	 * Add vote for REFGEN_VDD_A_0P9/VDD_A_PCIE_0_0P9 regulator.
+	 */
+	vdda-refgen-supply = <&pm_v6f_l1>;
+	vdda-refgen-max-microamp = <206000>;
+
 	status = "ok";
 };