Re: [Projekt-wlan] Regression in3735ba8db8e6ea22ad3ff524328926d8d780a884 with Freescale P1020

[michael-dev]

Hi,

thanks for the quick reply.

> Please review the patch http://patchwork.ozlabs.org/patch/237201/
I applied it, but it does not make any difference on my platform.

Regards,
 M. Braun

Am 17.04.2013 12:53, schrieb Liu Shengzhou-B36685:
> Hi Braun,
>
> It seems the duplicated tdi_reset caused the PHY_CLK_VALID bit 
> unstable,
> introduced by patch "EHCI: centralize controller initialization".
> I submitted a patch to fix it.
> Please review the patch http://patchwork.ozlabs.org/patch/237201/
>
> Regards,
> Shengzhou
>
>
> > -----Original Message-----
> > From: Michael Braun [mailto:michael-dev@xxxxxxxxxxxxx]
> > Sent: Wednesday, April 17, 2013 6:08 PM
> > To: Liu Shengzhou-B36685
> > Cc: Alan Stern; projekt-wlan@xxxxxxxxxxxxxxxxx; Greg Kroah-Hartman;
> > linux-usb@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> > Subject: Regression in 3735ba8db8e6ea22ad3ff524328926d8d780a884 with
> > Freescale P1020
> >
> > Hi,
> >
> > I'm running OpenWRT Kernel 3.8.3 (which already has
> > f66dea709cd9309b2ee9f715697818001fb518de and
> > 5ed338778f917a035f0f0a52327fc4f72e36f7a1 applied) on a P1020WLAN 
> > (QorlQ,
> > PPC) device.
> > Before updating the kernel from 3.3.0, USB host support was working 
> > fine.
> > Now I get "fsl-ehci: USB PHY clock invalid" messages in dmesg and the
> > lsusb output is empty, so USB host support is not working. When I 
> > apply
> > the following patch, USB host support starts working again, so I 
> > guess
> > 3735ba8db8e6ea22ad3ff524328926d8d780a884 is the cause.
> > Do you have an idea how to fix it more appropriately?
> >
> > Thanks,
> >   M. Braun
> >
> > --- a/drivers/usb/host/ehci-fsl.c       2013-04-15 21:13:52.924403077
> > +0200
> > +++ b/drivers/usb/host/ehci-fsl.c       2013-04-15 21:13:57.572410838
> > +0200
> > @@ -273,7 +273,6 @@ static int ehci_fsl_setup_phy(struct usb
> >                  if (!spin_event_timeout(in_be32(non_ehci +
> > FSL_SOC_USB_CTRL) &
> >                                  PHY_CLK_VALID, 
> > FSL_USB_PHY_CLK_TIMEOUT,
> > 0)) {
> >                          printk(KERN_WARNING "fsl-ehci: USB PHY clock
> > invalid\n");
> > -                       return -EINVAL;
> >                  }
> >          }
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