RE: HSIC on imx6

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Dear Peter,

> Peter Chen <Peter.Chen@xxxxxxxxxxxxx> hat am 20. Februar 2014 um 02:45
> geschrieben:
>
>
>
>
> > >
> >
> > Okay that makes sense. In theory the ehci core should do the reset. Is
> > there anything special regarding reset and HSIC?
> >
>
> After pcd interrupt occurs, hsic will be treated as a normal ehci host.
>
> > >>
> > >> > It seems more and more guys are working at hsic controller, I will
> > >> > try to submit hsic support asap.
> > >> >
> > >>
> > >> If you have something working it would be really cool to get those
> > >> patches. I am working some days on this topic but without much
> > >> success and I am running out of time :/
> > >>
> > >
> > > Will keep you posted.
> > >
> >
> > Hope you soon will find some time.
> >
>
> Since some chipidea code needs to change before adapting HSIC support,
> I submit a temp version at my git, it is not suitable for upstream, but
> can let the hsic work.
>
> github.com/hzpeterchen/linux-usb.git
> branch: fsl-hsic-support
>
>
> Peter
>
I did some backport or your patches to 3.13. Additionally I had to remove some
other patches that we were using in previous kernel versions for the HSIC ports.
 
Now the HSIC ports themselves (Bus003 and Bus004) appear again with lsusb:
  Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

But unfortunately the devices, which are connected to the HSIC ports, do not
appear. I would expect a USB4640-hub on Bus 003 and a Sierra Wireless card
attached:
  Bus 003 Device 002: ID 0424:2640 Standard Microsystems Corp. USB 2.0 Hub
  Bus 003 Device 003: ID 0424:4040 Standard Microsystems Corp.
  Bus 003 Device 004: ID 1199:68a3 Sierra Wireless, Inc.

I will try to find out, why the other devices are not being found.

Kind regards,
 Rolf
 
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