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Date: Fri, 10 Oct 2014 14:54:18 +0200
From: Angelo Dureghello <angelo70@...il.com>
To: Bruno Thomsen <bth@...strup.dk>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: Micrel KSZ8031 - phy link missing
Dear Bruno,
i added the fixup, nothing changes.
I am tracing flags at ksz8021_config_ini:
Starting network...
davinci_mdio davinci_mdio.0: resetting idled controller
micrel.c: ksz8021_config_init: flags: 0x00000203
net eth0: attached PHY driver [Micrel KSZ8031]
(mii_bus:phy_addr=davinci_mdio-0:00, id=221556)
udhcpc (v1.20.2) started
Sending discover...
Sending discover...
Sending discover...
No lease, failing
So, MICREL_PHY_50MHZ_CLK seems to be set.
I have the suspect that the clock is not received from the phy.
Unfortunately i can't check
with the scope, the micrel chip is on a hidden part of the board.
From what i remember, when i was trying to init emac/phy by devicetree,
it was working.
[root@...ix ~]# cat /sys/class/net/eth0/carrier
0
[root@...ix ~]# cat /sys/class/net/eth0/carrier_changes
1
[root@...ix ~]#
I realize at this point is my own debugging / issue.
But if you have any idea how to debug this, i can put some traces here
and there.
Still many thanks,
Angelo
On 10/10/2014 13:32, Bruno Thomsen wrote:
> Hey again,
> Looks like you just enable clock output from DA850. You also need to setup PHY to accept RMII clock from MAC.
> This can be done with something like this...
>
> ...
>
>
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