On May 30, 2006, at 09:22, Vitaly Bordug wrote: > On Tue, 30 May 2006 11:28:48 +0200 > Laurent Pinchart <laurent.pinchart at tbox.biz> wrote: > >> Hi, >> >> once again, posting to a mailing list helped me solving my >> problem. It should >> have been obvious that the MDIO bus is really a bus, and can as >> such support >> several devices. The issue was that the drivers/net/fs_enet driver >> set >> bus->phy_mask to ~0x9, and the LXT973 uses addresses 0 and 1. >> Address 1 thus >> never got probed. What's the reason for probing addresses 0 and 3 >> only ? > > The reason is obvious: bitbang read of PHY id with not-existent > PHY, does not return expected (0, iirc), that confuse mdio bus > device-driver bound (it assumes error and returns -1), and prevents > from probing other phys. So, as that seems to be a "feature" on > CPM2 only, we are working that around specifying phy_mask to > prevent probing inexistent phys w/over bitbang thing.
Hopefully, this isn't being set in the driver, but is set in the board code, instead. This is a board-specific setting. Andy
