diff --git a/arch/arm/boot/dts/dbx5x0.dtsi b/arch/arm/boot/dts/dbx5x0.dtsi
index b5e73aa4c3c236f118ee919ad88e920b271e0d4b..d765c38afebf37785bda568c309e70c2498d3e30 100644
--- a/arch/arm/boot/dts/dbx5x0.dtsi
+++ b/arch/arm/boot/dts/dbx5x0.dtsi
@@ -679,6 +679,7 @@
 			regulator-name = "mmci-reg";
 			regulator-type = "voltage";
 
+			startup-delay-us = <100>;
 			enable-active-high;
 
 			states = <1800000 0x1