Hi Peter, On Tue, Sep 8, 2015 at 2:52 AM, Peter Chen <peter.chen at freescale.com> wrote: >> + phy-clkgate-delay-us = <400>; > > You may add above property description at related binding doc Just sent patches adding 'phy-clkgate-delay-us' property in the usb code and also into the doc binding. Regards, Fabio Estevam