On 10/09/2014 08:24 AM, Sebastian Hesselbarth wrote:
Yeah, but that HW PHY stuff really only works properly with standard
compliant PHYs. In particular, the integrated Marvell PHY in Marvell
Berlin SoCs does not seem to reflect PHY status on BMCR properly /sigh/.
Anyway, I think we can live with PHY polling.
BTW, one thing I noticed here is that libphy calls adjust_link
over-and-over again although nothing has changed. I guess we can just
add some before/after comparison in the libphy state machine and only
call adjust_link when something has changed. I'll have to look closer
at the state machine first and maybe Florian can comment on this,
There's basically nothing built in the generic libphy that would try to
limit the number of times the adjust_link() callback is invoked, some
changes went in the bcmgenet driver to avoid that, I have yet to see how
much of this logic is transferable to the libphy layer.