> -----Original Message-----
> From: David Brownell [mailto:[EMAIL PROTECTED]
> Sent: Friday, May 11, 2007 4:03 PM
> To: Li Yang-r58472
> Cc: [EMAIL PROTECTED]; linux-usb-devel@lists.sourceforge.net
> Subject: Re: [PATCH] ehci_fsl update for MPC831x support
>
> On Wednesday 09 May 2007, Li Yang wrote:
> > For MPC831x support, change the ehci-fsl driver to preserve
> > bits set in platform code. Add a common CONFIG_USB_EHCI_FSL
> > to indicate presence of Freescale EHCI SOC. Add FSL_USB2_DR_OTG
> > operating mode support, thus both host and device can work for the
> > mini-ab receptacle. Note: this doesn't enable OTG protocol
> > support.
> >
> > Signed-off-by: Li Yang <[EMAIL PROTECTED]>
>
> Looks pretty much OK, but see below.
>
>
> > ---
> > drivers/usb/host/Kconfig | 6 ++++++
> > drivers/usb/host/ehci-fsl.c | 10 +++++++---
> > drivers/usb/host/ehci-hcd.c | 2 +-
> > 3 files changed, 14 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
> > index 6271187..8da3185 100644
> > --- a/drivers/usb/host/Kconfig
> > +++ b/drivers/usb/host/Kconfig
> > @@ -72,6 +72,12 @@ config USB_EHCI_BIG_ENDIAN_MMIO
> > depends on USB_EHCI_HCD
> > default n
> >
> > +config USB_EHCI_FSL
> > + bool
> > + default n
> > + ---help---
> > + Variation of ARC USB block used in some Freescale chips.
>
> So does that mean a "select USB_EHCI_ROOT_HUB_TT" is missing?
> Or is that part of the variation?
No, we still need USB_EHCI_ROOT_HUB_TT. This option is used to indicate
the presence of Freescale EHCI SoC which is a variation of ARC USB.
EHCI_ROOT_HUB_TT is part of the variation; maybe we can make it
automatically select EHCI_ROOT_HUB_TT.
>
> And: who sets USB_EHCI_FSL? Shouldn't there be a
> "default y if MPC831x || MPC834x" etc?
It is set in platform Kconfig. Like:
config PPC_MPC831x
bool
select PPC_UDBG_16550
select PPC_INDIRECT_PCI
select USB_EHCI_FSL
default y if MPC8313_RDB
- Leo
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