--- a/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
+++ b/arch/arm/boot/dts/sun7i-a20-olinuxino-micro.dts
@@ -246,6 +246,12 @@

                interrupt-controller;
                #interrupt-cells = <1>;
+
+               vcc_csi0: ldo3 {
+                       regulator-always-on;
+                       regulator-min-microvolt = <2800000>;
+                       regulator-max-microvolt = <2800000>;
+               };
        };
 };