From: Mugunthan V N <mugunthanvnm@ti.com>
To: netdev <netdev@vger.kernel.org>
Cc: David Miller <davem@davemloft.net>
Subject: phy link status not stable
Date: Tue, 16 Sep 2014 21:56:56 +0530 [thread overview]
Message-ID: <541864D0.7080803@ti.com> (raw)
Hi
While doing ifdown/ifup test, phy link up status is very much delayed
and also link up/down comes alternatively without physical link changes
which leads to ifup failure. in v3.12 internal tree there is no failure.
Pasting the logs below.
root@am437x-evm:~# ifup eth0
[ 652.633204] net eth0: initializing cpsw version 1.15 (0)
[ 652.717428] net eth0: phy found : id is : 0x221622
udhcpc (v1.20.2) started
Sending discover...
Sending discover...
[ 658.717859] cpsw 4a100000.ethernet eth0: Link is Up - 1Gbps/Full -
flow control rx/tx
Sending discover...
[ 660.717894] cpsw 4a100000.ethernet eth0: Link is Down
[ 661.717937] cpsw 4a100000.ethernet eth0: Link is Up - 1Gbps/Full -
flow control rx/tx
No lease, failing
root@am437x-evm:~# udhcpc
udhcpc (v1.20.2) started
Sending discover...
Sending select for 172.24.190.6...
Lease of 172.24.190.6 obtained, lease time 3600
/etc/udhcpc.d/50default: Adding DNS 192.0.2.2
/etc/udhcpc.d/50default: Adding DNS 192.0.2.3
root@am437x-evm:~#
Is this a known issue or any pointers where to look for clues?
Setup: TI-AM437x EVM
Phy: Micrel KSZ9031 Gigabit PHY
Thanks,
Mugunthan V N
next reply other threads:[~2014-09-16 16:27 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-16 16:26 Mugunthan V N [this message]
2014-09-16 17:09 ` phy link status not stable Florian Fainelli
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