diff --git a/arch/arm/boot/dts/dbx5x0.dtsi b/arch/arm/boot/dts/dbx5x0.dtsi
index 2ec1599a89a0..a8562e38e9b0 100644
--- a/arch/arm/boot/dts/dbx5x0.dtsi
+++ b/arch/arm/boot/dts/dbx5x0.dtsi
@@ -675,7 +675,7 @@ vmmci: regulator-gpio {
 			compatible = "regulator-gpio";
 
 			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <2600000>;
+			regulator-max-microvolt = <2900000>;
 			regulator-name = "mmci-reg";
 			regulator-type = "voltage";