Configuring Freecale ucc_geth without a PHY

Kim Phillips kim.phillips at
Wed Jan 30 04:43:10 EST 2008

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


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