Andrew Lunn wrote:
Please can you tell us what PHY which is, and how it is put to sleep
and woken up.
It's the at803x driver.
http://lxr.free-electrons.com/source/drivers/net/phy/at803x.c
It goes to sleep in its at803x_suspend() function, which is called by
phy_suspend().
There is a corresponding at803x_resume(). The problem is that this is
not called by mdiobus_register(). I'm guessing that mdiobus_register()
assumes that the phy is awake.
It seems like a catch-22. mdiobus_register() assumes that the phy is
awake, but you can't wake up the phy until after you call
mdiobus_register().
If the PHY cannot be woken up using MDIO, then maybe you need to look
at the mdio bus reset call?
I looked at that, but it won't work because there is no phydev when the
reset function is called:
http://lxr.free-electrons.com/source/drivers/net/phy/mdio_bus.c#L328
It's the same catch-22.
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