Hello,
On 2024-09-14 16:00:01 +0200, Stefan Eichenberger wrote:
> Hi Niklas and Andrew,
>
> I was able to do a first basic test on my setup. I'm using the MV88Q2110
> and connecting it to a Göpel media converter that I use as a reference.
Thanks for testing this work.
> However, with your patch applied, I can't get a link. When I set a fixed
> link speed of 1GBit/s and the media converter is configured as the
> master, I can normally do:
> ethtool -s end1 speed 1000 master-slave forced-slave
> After that, the link came up. However, with the changes made, I can't do
> this anymore. Can you reproduce this in your setup?
Without this patch I can't bring up a 1GBit/s link at all, I can only
setup a 100 MBit/s link with,
ethtool -s eth1 speed 100 master-slave forced-slave
If I do the same with speed set to a 1000 I never get a link. That's why
autoneg is a such a boon for me, as with that I do get a 1 Gbit/s link.
As you have the MV88Q2110 datasheets, can you check the register writes
in mv88q2110_init_seq0 and mv88q2110_init_seq1 for sanity? Maybe
something is not quiet right there, I have only been able to reveres
engineer support for autoneg so it's quiet likely.
> What is your setup
> like? Are you connecting two MV88Q2110 physically to each other?
Yes, I hair-pin two MV88Q2110 together.
> out
> of office again next week, afterwards I should be able to do some more
> testing again. I think being able to set fixed link speeds is a must for
> this PHY.
I'm also at LPC next week but I will do some more testing on this and
see if I can reproduce your finding with a 100 speed link.
--
Kind Regards,
Niklas Söderlund
