Date: Fri, 4 May 2012 15:12:55 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Patrick Kelsey <kelsey@ieee.org> Cc: freebsd-mips@freebsd.org Subject: Re: heads up - ar71xx changes Message-ID: <CAJ-VmomGU-tZTA_9uJGO2Q3A=cQ%2BMK1bW4rpnP=LW8T-srTGYg@mail.gmail.com> In-Reply-To: <CAD44qMUDj6WZkjsk1Rze2beUKsfwZS9v-%2BhPvz_dLmDE_=9OpQ@mail.gmail.com> References: <CAJ-VmonZbXe3yUaBn3-giaz7aiMYsk3D4u%2BghbZUZkLWw595mQ@mail.gmail.com> <CAD44qMUubHchQJbjpvJdSutbSQZdCCjiKXV9a8hqPx1p0Vi=8A@mail.gmail.com> <CAD44qMWwTrZySNJj33pZz90bB05aG39rLxkF-H44Bp%2BpeHTJLQ@mail.gmail.com> <CAJ-VmokJGtu8fvjgYNVPJ53GbxpkJc5F1v2meomQg3c9h9NXfg@mail.gmail.com> <CAD44qMUDj6WZkjsk1Rze2beUKsfwZS9v-%2BhPvz_dLmDE_=9OpQ@mail.gmail.com>
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On 4 May 2012 11:30, Patrick Kelsey <kelsey@ieee.org> wrote: > Hmmm. =A0On the RB450G, arge1 is connected to port 5 on the AR8316 > switch, and port 5 on the AR8316 is configured by the boot loader to > bypass the switch complex and connect directly to an internal PHY. > The MDIO bus on the AR8316 is wired to arge0. =A0arge0 is connected to > the cpu port on the AR8316, with no real PHY. =A0That hack diff I sent > is making less and less overall sense (although it does let me limp > along for the moment). > > What I really want is for arge0 to initialize to whatever fixed rate > is hinted (or defaulted when no hint is given), and I want arge1 to > see its PHY on the MDIO bus attached to arge0. =A0Perhaps I should have > ARGE_MDIO defined whereas I currently do not? Right. this is very much like what my AP96 reference board has. The previous code had a hack which was only valid for AR71xx/AR913x, where it assumed arge0 and arge1 miibus were the same - it just used the arge0 MDIO lines. There was no "arge1 MDIO" interface. The AR724x and later SoCs can have 2 MDIO busses. I've "solved" this by using the arge mdio/mii bus split code from stefan, which is in -HEAD. It's a bit of a round about way of specifying mdio and mii busses, but it lets you (later) do weird and wonderful things, like hang an MII bus off of something internal to a switch, so you can hang ukphy or whatever other PHYs off of it. You could look at the AP96 and AP96.hints files in sys/mips/conf/ and see if my arge0/arge1 hints work for you. What _I_ should do is grab that switch driver and see if it works for me. If it does, I may just commit it to -HEAD as a starting point for the switch API that ray@ has been working on, and then bring over his switch API. That at least lets me get AR71xx + AR8316 support for the AP96 and Routerstation Pro boards, and gives me a starting point to do further testing/development with. Thanks! Adrian
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