Re: Any interest in dwc-otg (aka dwc2) device emulation? For Raspi 3 and below.

[Paul Zimmerman <pauldzim@gmail.com>]

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Hi John,

Thanks for the tips! I found an issue when testing with the usb-storage
device, so I will work on fixing that, and then think about how best to
split up the patches.

Thanks,
Paul

On Mon, Mar 9, 2020 at 7:23 PM John Snow <jsnow@redhat.com> wrote:

>
>
> On 3/6/20 7:34 PM, Paul Zimmerman wrote:
> > Hi Folks,
> >
> > I have been working on an emulation of the dwc-otg USB controller
> > (host mode only for now), as implemented on the Raspberry Pi 3 and
> > below, and on numerous other embedded platforms. I have it to a point
> > where it works pretty well with the dwc2 driver in the mainline Linux
> > kernel, and with the dwc-otg driver in the Raspbian kernel. Mouse and
> > keyboard work fine, and I *think* the usb-net device is working too,
> > although I have been unsuccessful in connecting to the outside world
> > with it.
> >
> > I haven't done anything with gadget-mode yet, but that could certainly
> > be added in the future.
> >
> > Would there be any interest in me submitting this for inclusion in
> > Qemu? I ask because I see there was a previous effort at this at
> > github.com/0xabu/qemu/hw/usb/bcm2835_usb.c, but it seems it never went
> > anywhere.
> >
> > Thanks,
> > Paul
> >
>
> At a minimum, I think you should send your patches to the list for
> posterity even if they don't wind up getting enough review pressure to
> be merged.
>
> If you want advice on how to split up your patches to entice more
> reviewers, please let us know and any one of us can write a thousand
> more :words: that might help make a better case.
>
> (There's a much-too-long wiki entry on the matter, if you are brave.)
>
> The issue, as always, is usually just reviewer time -- and how squeaky
> the wheel is. Making the patches look pretty and well organized is one
> way to trick well meaning people into reviewing your patches.
>
> --js
>
>

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