On 05/13/2016 11:44 PM, Andrew Lunn wrote:

quoted

quoted

Another issue is that on some boards we have one reset line tied to
multiple PHYs.How do we prevent multiple resets being taking place when each of
the PHYs are registered?

   My patch just doesn't address this case -- it's about the
individual resets only.

This actually needs to be addresses a layer above. What you have is a
bus reset, not a device reset.

    No.
    There's simply no such thing as a bus reset for the xMII/MDIO busses, 
there's simply no reset signaling on them. Every device has its own reset 
signal and its own timing requirements.

So the gpio line is associated to the mdio bus, not a PHY.

    No.

Either your MDIO driver needs to handle the gpio
line,  or in __mdio_register(),

    __mdiobus_register(), you mean?

before it starts looking at the
children.

    It's basically the same thing.
    The MDIO bus reset is a misconception.

	Andrew

MBR, Sergei