Re: [PATCH v2 0/3] USB: add generic onboard USB HUB driver

Peter Chen
2015-12-15T08:33:26Z

On Mon, Dec 14, 2015 at 10:35:19AM +0100, Arnd Bergmann wrote:
> On Monday 14 December 2015 15:26:11 Peter Chen wrote:
> > Hi all,
> >
> > There is a known issue that the USB code can't handle USB HUB's
> > external pins well, in that case, it may cause some onboard
> > USB HUBs can't work since their PHY's clock or reset pin needs to
> > operate.
> >
> > The user reported this issue at below:
> > http://www.spinics.net/lists/linux-usb/msg131502.html
> >
> > In this patch set, I add a generic onboard USB HUB driver to
> > handle this problem, the external signals will be configured
> > before usb controller's initialization, it much likes we did
> > it at board code before.
> >
> > The user needs to add this generic hub node at dts to support it.
> >
> > @The udoo users, help to test please.
>
> I still think need to do this properly by representing the hub
> device as a USB device, using power sequencing code like MMC does.
>
> Arnd

I will try to have a patch set for general onboard USB device.

--

Best Regards,
Peter Chen
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