Re: [PATCH 2/2] net: dsa: mv88e6xxx: Support serdes ports on MV88E6097

From: Andrew Lunn
Date: Sun Oct 18 2020 - 16:26:05 EST


> I assume you're talking about the PHY Control Register 0 bit 11. If so
> that's for the internal PHYs on ports 0-7. Ports 8, 9 and 10 don't have
> PHYs.

Hi Chris

I have a datasheet for the 6122/6121, from some corner of the web,
Part 3 of 3, Gigabit PHYs and SERDES.

http://www.image.micros.com.pl/_dane_techniczne_auto/ui88e6122b2lkj1i0.pdf

Section 5 of this document talks
about the SERDES registers. Register 0 is Control, register 1 is
Status - Fiber, register 2 and 3 are the usual ID, 4 is auto-net
advertisement etc.

Where these registers appear in the address space is not clear from
this document. It is normally in document part 2 of 3, which my
searching of the web did not find.

Andrew