Hi! Thanks for the support.
> > root@miro:~# mii-tool lan3
> > lan3: negotiated 1000baseT-HD flow-control, link ok
> >
> > But IIRC the switch is 100mbit? And dmesg does get it right. Its just
> > mii-tool that is confused.
> >
> > Link detection seems to work
> >
> > root@miro:/sys/bus/spi/devices/spi2.0# mii-tool lan1
> > lan1: negotiated 1000baseT-HD flow-control, link ok
> > root@miro:/sys/bus/spi/devices/spi2.0# mii-tool lan1
> > lan1: no link
> >
> > (But that really should be 100baseT, not 1000baseT).
>
> ethtool lan3 should also report the correct setting.
Yes, after port is configured, ethtool produces right results:
Speed: 100Mb/s
Duplex: Full
Before that, it looks rather confusing:
root@miro:~# ethtool lan2
root@miro:~# ethtool lan2
Settings for lan2:
...
Speed: Unknown!
Duplex: Unknown! (255)
> > Is there register dump available somewhere? I was using
> > /sys/bus/spi/devices/spi32766.0/registers but this does not seem to be
> > available.
>
> There is a patch to add that functionality. It is very simple and I will
> send it
> to you later. Without that it is hard to debug the DSA driver if there is
> something wrong.
That would be nice :-).
> I also have a simple utility to communicate with that registers file to
> read/write
> register individually. Is there a standard Linux utility for that
> function?
I don't think standard utility exists. Binary file which can be
written by userspace shoudl be enough.
> > p04_rx: 660
> > p04_rx_hi: 0
> > p04_rx_undersize: 0
> > p04_rx_fragments: 20
>
> This indicates a problem with the MAC. Are you using a MII or RMII version?
I do have:
mac0: ethernet@800f0000 {
phy-mode = "rmii";
pinctrl-names = "default";
...
}
> > p04_tx_hi: 0
> > p04_tx_late_col: 0
> > p04_tx_pause: 0
> > p04_tx_bcast: 0
> > p04_tx_mcast: 3
>
> This indicates the host port tried to send frames to the MAC.
> > tx_total_col: 0
> > tx_exc_col: 0
> > tx_single_col: 0
> > tx_mult_col: 0
> > rx_discards: 0
> > tx_discards: 0
>
> They just reported frames are received from the port. Because of problem with
> the host port there is no transmission coming from the host port.
I disabled second ethernet port in the dts so it could not interfere
with testing, butno change.
Is there any way to debug the host port problems? I do have
spi@0 {
compatible = "microchip,ksz8895";
...
ports {
port@4 {
reg = <4>;
label = "cpu";
ethernet = <&mac0>;
fixed-link {
speed = <100>;
full-duplex;
};
};
};
};
On one side, and
mac0: ethernet@800f0000 {
phy-mode = "rmii";
status = "okay";
fixed-link {
speed = <100>;
full-duplex;
};
};
on the other...
Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures)
http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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