For u-boot-v2 from:

git clone git://www.denx.de/git/u-boot-v2.git

2.0.0 rc3 ran both the SMSC8700 and the idealized IEEE MII Virtual Phy of the SMSC9313 from the i.mx27 using /arch/arm and /board ads27 or pcm038. (or any other board built on pattern.)

2.0.0 rc7 no longer supports the SMSC9313 IEEE MII Virtual Phy as pulled from the above repository.

SMSC Freescale and Lufkin will likely look into this issue.