Configuring Freecale ucc_geth without a PHY

[Kim Phillips]

On Tue, 29 Jan 2008 11:08:43 -0600
Steven Hein <ssh at sgi.com> wrote:

> Hi all,
> 
> I have a custom board with an MPC8358 (our board is based
> off of the MPC8360E-MDS development board) that has its eth's
> directly connected (GMII) to a Broadcom network switch
> part on the same board, with no PHYs between them.
> We've have been using a 2.6.16.18 kernel (from TimeSys) up
> until now, and I hacked in some crude support for no-phy
> configs forced to 100Mbit and 1Gbit speeds.   Now I'm
> moving to 2.6.22 (with 8360 the patches from bitshrine.org),
> and I'm trying to understand how I should do this with
> device trees, the new PHY infrastructure, etc.   Has anyone
> else needed this support?   Does anyone have any suggestions
> as to how to tackle it?

check out the "fixed-link" property and associated code.  This
implementation came about after 2.6.22 though (it's commit-ish
v2.6.23-10096-ga21e282).

Kim