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SubjectRE: [PATCH v2 1/3] usb: ehci: fsl: Update register accessing for arm/arm64 platforms
On Fri, 18 Jan 2019, Ran Wang wrote:

> Hi Alan,
>
> On January 18, 2019 00:08, Alan Stern wrote:
> >
> > On Thu, 17 Jan 2019, Ran Wang wrote:
> >
> > > arm/arm64's io.h doesn't define clrbits32() and clrsetbits_be32(),
> > > which causing compile failure on some Layerscape Platforms (such as
> > > LS1021A and LS2012A which also integrates FSL EHCI controller). So use
> > > ioread32be()/iowrite32be() instead to make it workable on both powerpc
> > > and arm.
> >
> > For patches 1/3 and 3/3:
> >
> > Acked-by: Alan Stern <stern@rowland.harvard.edu>
> >
> > Have you tested these on the Layerscape platforms to make sure they work
> > correctly?
>
> To be honest, the first goal of this patch set is to fix compile issue.
> And I have verified it on LS1012AQDS, and encountered failure as below:
>
> [ 2.966755] ehci-fsl: Freescale EHCI Host controller driver
> [ 2.973113] fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller
> [ 2.979851] fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 3
> [ 2.987549] fsl-ehci fsl-ehci.0: irq 22, io mem 0x08600000
> [ 3.005769] fsl-ehci fsl-ehci.0: USB 2.0 started, EHCI 0.00
> [ 3.012122] hub 3-0:1.0: USB hub found
> [ 3.016088] hub 3-0:1.0: config failed, hub doesn't have any ports! (err -19)
>
> However, actually the only board which I can find so far has known HW issue on
> EHCI part, so I plan to find other platform to do complete verification when
> possible. And will submit other fix if needed. Is that OK?
>
> BTW, for powerpc platform, I've tested on a T1042AD4RDB and USB worked fine with it.

Okay, that's good.

Alan Stern

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