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Date: Fri, 3 Jul 2015 17:45:34 -0600
From: Mike Brown <mike@skew.org>
To: freebsd-arm@freebsd.org
Subject: cpsw0: Failed to read from PHY (on BBB w/11.0-CURRENT)
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I'm trying to get FreeBSD working on my BeagleBone Black rev. C.

10.1-STABLE (20150617 snapshot) wouldn't boot; it couldn't mount rootfs.
http://pastebin.com/7dPQFGH2 is the console log if anyone cares.

I asked on Freenode #freebsd-embedded and was told to try 11-CURRENT
for now.  Well, 11-current boots, but I can't get networking going.
ifconfig only shows the lo0 device, no cpsw0. The boot messages said:

cpsw0: <3-port Switch Ethernet Subsystem> mem 0x4a100000-0x4a1007ff,0x4a101200-0x4a1012ff irq 40,41,42,43 on simplebus0
cpsw0: CPSW SS Version 1.12 (0)
cpsw0: Initial queue size TX=128 RX=384
cpsw0: Failed to read from PHY.
cpsw0: attaching PHYs failed
device_attach: cpsw0 attach returned 6

I get the same result regardless of whether an ethernet cable is plugged in.

Is this expected, or is something wrong on my end?

Let me know if you need any more info. Thanks!