[LEDE-DEV] [PATCH 3/3] lantiq: add device tree binding for dwc2 on danube

[Ben Mulvihill]

On Fri, 2016-10-28 at 19:14 +0300, Antti Seppälä wrote:
> On 28 October 2016 at 17:30, Ben Mulvihill <ben.mulvihill at gmail.com> wrote:
> > Add device tree binding for dwc2 usb driver on lantiq danube
> >
> > Signed-off-by: Ben Mulvihill <ben.mulvihill at gmail.com>
> > ---
> > diff -uprN a/target/linux/lantiq/dts/danube.dtsi b/target/linux/lantiq/dts/danube.dtsi
> > --- a/target/linux/lantiq/dts/danube.dtsi       2016-10-27 19:56:07.090392399 +0200
> > +++ b/target/linux/lantiq/dts/danube.dtsi       2016-10-27 20:47:34.387511522 +0200
> > @@ -140,7 +140,7 @@
> >                 };
> >
> >                 ifxhcd at E101000 {
> > -                       compatible = "lantiq,ifxhcd-danube";
> > +                       compatible = "lantiq,ifxhcd-danube", "lantiq,ifxhcd-danube-dwc2";
> >                         reg = <0xE101000 0x1000
> >                                 0xE120000 0x3f000>;
> >                         interrupt-parent = <&icu0>;
> >
> >
> 
> Hi.
> 
> Have you tried if danube can simply be compatible with vanilla "snps,dwc2"?
> 
> The main reason we created our own definition for lantiq is that arx
> and xrx have fifo sizes smaller than what the dwc2 autodetection
> mechanism expects.
> I remember finding some references in ifxhcd code which would suggest
> that danube had bigger fifo and thus would maybe work without any
> special treatment.
> 
> Br,

I'm pretty sure I tried it, but must have been  a couple of years
ago and I can't remember why it didn't work. I'll have another go.

Thanks for the suggestion,

Ben