diff --git a/arch/arm/boot/dts/imx51-babbage.dts b/arch/arm/boot/dts/imx51-babbage.dts
index a4a6d4a6b55b..ba60b0cb3cc1 100644
--- a/arch/arm/boot/dts/imx51-babbage.dts
+++ b/arch/arm/boot/dts/imx51-babbage.dts
@@ -396,6 +396,10 @@ MATRIX_KEY(3, 3, KEY_POWER)
 	status = "okay";
 };
 
+&pmu {
+	secure-reg-access;
+};
+
 &ssi2 {
 	status = "okay";
 };