Re: usb-gadget: dynamic reconfiguration

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On Mon, Nov 8, 2021 at 1:08 PM Felipe Balbi <balbi@xxxxxxxxxx> wrote:
>
>
> Hi,
>
> Shantur Rathore <i@xxxxxxxxxxx> writes:
> > Hi all,
> >
> > I am trying to figure out if it's possible to reconfigure a usb-gadget
> > when it's live.
> > The idea is to create a gadget with 1 function - lets say a serial gadget.
> >
> > Upon communication with the host, the host could specify (via Serial
> > communication) which is the next gadget it needs for example a mass
> > storage or ecm and the next gadget can be added to the configuration.
> >
> > For now this only works if the gadget is disconnected and reconnected
> > to the UDC.
> >
> > I want to understand if it is technically possible to add more
> > functions to a live config without affecting existing functions.
>
> the only thing you can do is upon a certain command, logically
> disconnect from the bus and connect again as a new device.

thanks guys, always helpful.

>
> --
> balbi



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