On Wed, Jun 24, 2009 at 04:25:06PM -0500, Andy Fleming wrote:
[...]
>>> My concern is that you will be detecting the GMII interface, and
>>> disallowing half-duplex, despite the fact that the interface is
>>> actually
>>> running at 10 or 100 Mbit.
>>
>> Very interesting, though I'm not sure I'm completely following. :-)
>>
>> Are you saying that I should do this instead:
>>
>> if (!phydev->duplex &&
>> (phyi == PHY_INTERFACE_MODE_MII ||
>> phyi == PHY_INTERFACE_MODE_RMII ||
>> (phyi == PHY_INTERFACE_MODE_GMII &&
>> phydev->speed < 1000)))
>> tempval &= ~MACCFG2_FULL_DUPLEX;
>> else
>> tempval |= MACCFG2_FULL_DUPLEX;
>>
>> i.e. we detected GMII interface initially, but it downgraded
>> to MII since speed is < 1000, thus we can set half-duplex in MAC?
>
> Yeah, I think that works out more correctly.
Cool, thanks.
Do you happen to know how gianfar iface auto-detection works in HW?
I mean, if we connect 100 Mbs link to the GMII PHY, then
gfar_get_interface() would return MII, correct?
If so, then I think I'll also have to change
phy_interface_t phyi = phydev->interface;
to
phy_interface_t phyi = gfar_get_interface(dev);
since phydev->interface may contain outdated information.
Or this can't happen?
> And I suspect that the same is true for UCC
Yup. Much thanks for catching this!
--
Anton Vorontsov
email: [email protected]
irc://irc.freenode.net/bd2
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