RE: Add dwc_otg driver

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> From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb-owner@xxxxxxxxxxxxxxx] On Behalf Of popcorn mix
> Sent: Wednesday, April 18, 2012 4:47 AM
> 
> I'm not familiar with the s2c_hsotg.c driver, but if it can be made to
> support our hardware we're very interested in using it.
> 
> I think dwc_otg is going to be a pain to mainline, and there are a
> number of issues with it so we're happy to move away from it.
> Assuming s2c_hsotg works as well or better than dwc_otg, we will switch to it.
> 
> If Greg has R-Pi hardware and is able to help port s2c_hsotg to R-Pi
> that would be great.
> 
> What is the license for s2c_hsotg? If it is dual licensed BSD+GPL then
> that's even better.

Unless I'm mistaken, the s3c_hsotg driver only supports the peripheral
mode of the HSOTG core. So if you need support for host mode, then I'm
afraid it won't do.

BTW, you never responded to Greg's comment about signing off patches
anonymously. You say you have permission to release the Synopsys driver,
but how can we be sure of that if you don't identify yourself?

-- 
Paul

> On Wed, Apr 18, 2012 at 10:28 AM, Felipe Balbi <balbi@xxxxxx> wrote:
> > Hi,
> >
> > On Tue, Apr 17, 2012 at 04:57:10PM +0200, Domenico Andreoli wrote:
> >> On Tue, Apr 17, 2012 at 06:47:51AM -0700, Greg KH wrote:
> >> > On Tue, Apr 17, 2012 at 12:40:41PM +0100, popcorn mix wrote:
> >> > > dwc_otg driver came from synopsys (html files included). We do have
> >> > > permission to release it.
> >> > > However we've had nothing but trouble from it, so if there are any
> >> > > alternatives we'd be interested.
> >> > >
> >> > > Mainlining the Raspberry Pi kernel patches isn't something we have any
> >> > > experience of, and are hoping someone from the community will help.
> >> >
> >> > Ok, I can help out with this as I have the hardware.
> >>
> >> I have another Broadcom SoC (bcm4760) with this IP block
> >>
> >> > Who do I need to talk to about this on your side?  I thought I saw a
> >> > hardware description pdf somewhere, but I can't find it anymore.  Has
> >> > anyone done any work on the arm-specific stuff?
> >> >
> >> > As this is a bit off-topic for the linux-usb list (the majority of the
> >> > patches are non-USB), feel free to take the linux-usb list off of the
> >> > cc: if you want to.
> >>
> >> please keep me in the loop (or add linux-arm).
> >>
> >> > What can I do to help here?
> >>
> >> Currently there are at least 3 implementations floating.  Mainline
> >> already has the s3c-hsotg, which is being cleaned and generalized [0].
> >
> > that's correct, please join forces with the folks from Samsung (great
> > work btw guys) and help them clean up and generalize the driver. It's
> > better than adding yet another driver for the same IP.
> >
> > --
> > balbi
> --
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