RE: EST SBC8260 and Canary CTX-1170

This is a Lucent LU3X31FT IIRC.
I actually wrote some code to initialize the PHY
to put it in full duplex mode.

-----Original Message-----
From: Jerry Van Baren [mailto:vanbaren_gerald@si.com]
Sent: Thursday, November 30, 2000 11:04 AM
To: linuxppc-embedded@lists.linuxppc.org
Subject: Re: EST SBC8260 and Canary CTX-1170



[oops, forgot to send it to the list.  Sorry for the duplicate Jon,
Brian, Dan]

...and the other Canary dongle had a chip in it labeled:

Enable
(c) 1998
5v Simple
3001AD1E2MJ1C
3440903 9934P

I have not tried to track down the manufacturer.

The primary point is that PHYs have different chip sets, even
ones from
a single company and labeled with the same part number (maybe
Canary is
the only company to do this, but somehow I doubt that :-).

The secondary point is that you should stick to standard MII registers
if at all possible.  According to 802.3 (1998) Section 22.2.4,
registers 0-1 are "Basic", 2-10 are "Extended", 11-14 are reserved, 15
("Extended Status") is "Basic", and 16-31 are vendor specific.

gvb


At 09:47 AM 11/30/00 -0500, diekema_jon wrote:

quoted

quoted

I cracked open my CTX-1170 gizmo and it has a Lucent LU3X51FT-JE80

PHY in

quoted

it.  I manually set the phy_duplex to 1 and the phy_speed

to 100, still

quoted

quoted

no dice.

We have several of the CTX-1170 MII, and we have at least two
different PHY's in them.  One of the types is the Lucent
LU3X51FT-JE80.  I was unable to find a data sheet for the LU3X51FT
from http://www.lucent.com/micro, however I was able to find one on
the LU3X54FT.  The LU3X54-FT is a quad version of the LU3X51-FT.

The cep->phy_type variable in arch/ppc/8260_io/fec_enet.c

gets derived

quoted

from the PHY identifer registers 1 / 2.  When I run with FEC2 active,
I get a type of 0x00437412.  I would expect this to look something
like 0x0180????.

#
# MPC8260 Communication Options
#
# CONFIG_SCC_ENET is not set
CONFIG_FEC_ENET=y
# CONFIG_FCC1_ENET is not set
CONFIG_FCC2_ENET=y
# CONFIG_FCC3_ENET is not set

MPC8260 CPU/CPM/BUS: 200/133/33 Mhz

fec: Phy @ 0x0, type 0x00437412


When Dan Malek runs with the National Semi PHY DP83840A, how fast
is the MPC8260 running?  I think that Dan is running at 166Mhz,
if so we might have a timing problem on I2C bus.

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