On Tue, Dec 9, 2014 at 11:48 AM, Matthieu CASTET
<matthieu.cas...@parrot.com> wrote:

> Is your usb phy ok ?
>
> I saw freeze like that when there was no ulpi communication with the
> usb phy.

Thanks. I fixed it by passing 'regulator-boot-on' to the USB regulators

--- a/arch/arm/boot/dts/imx51-babbage.dts
+++ b/arch/arm/boot/dts/imx51-babbage.dts
@@ -137,6 +137,7 @@
             regulator-max-microvolt = <5000000>;
             gpio = <&gpio2 5 GPIO_ACTIVE_HIGH>;
             enable-active-high;
+            regulator-boot-on;
         };

         reg_usbotg_vbus: regulator@1 {
@@ -149,6 +150,7 @@
             regulator-max-microvolt = <5000000>;
             gpio = <&gpio1 7 GPIO_ACTIVE_HIGH>;
             enable-active-high;
+            regulator-boot-on;
         };
     };

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