Using fixed_phy with gianfar
Vitaly Bordug
vbordug at ru.mvista.com
Thu Jan 11 03:04:41 EST 2007
On Wed, 10 Jan 2007 06:22:40 -0800 (PST)
Ben Warren wrote:
> Thanks Vitaly!
>
> --- Vitaly Bordug <vbordug at ru.mvista.com> wrote:
>
> > No, you do not miss - this is an issue. In fact MDIO
> > bus was changed for numeric for gianfar-stuff, and
> > has been remaining string for fs_enet. I think it
> > makes sense to average this up, and will try to do
> > that once will get 8349-mitx which is gianfar+ fixed
> > user.
> >
> > The point is that fixed should be updated to numeric
> > MDIO address encoding. This has to come through
> > netdev, so I'll try to get it fixed by the next
> > merge window.
> >
> > --
> > Sincerely, Vitaly
> >
>
> Ideally (for me anyway), we'd be able to pass some
> fixed phy information via the device tree, for example
> speed and duplexity. This way a board could, for
> example, connect to one switch via RvMII @100FD and
> another via GMII @1000FD. Having parameters as
> numeric limits this capability, but presumably a
> simple encoding scheme could be make it work.
>
> I'm sure you've already thought of this, though...
Yes, I was thinking about something like 0:1001 or 0:101 where 1 at the end respects duplexity.
Putting it into devtree is good but we'll need to unify the interface first.
--
Sincerely, Vitaly
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