Hi, Fabio Estevam <festevam@xxxxxxxxx> writes: > On Tue, Feb 23, 2016 at 11:44 PM, Peter Chen <peter.chen@xxxxxxx> wrote: > >> Just plug in an external USB HUB at i.mx28 evk host port without pass >> ''usbcore.autosuspend=-1' at bootargs to see if it works. > > Well, the board I have is based on mx28 and has a USB hub onboard. It > does not work without ''usbcore.autosuspend=-1". Then what DOES get called ? If we don't reach runtime_pm of the PHY, we must reach runtime_pm of chipidea. In that case, detect _there_ if you're running on one of the known broken ones and return -EBUSY or something like that. -- balbi
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