Re: MPC860T FEC problem

Dear Rod,

can you please use a standard way to quote text? In this  message  it
is impossible for the reader to decide what was _my_ text, and which
is yours.

In message [ref] you wrote:

 -----Original Message-----
From: 	Wolfgang Denk [mailto:wd@denx.de]
Sent:	Saturday, September 07, 2002 10:15 AM
To:	o_y
Cc:	linuxppc-embedded@lists.linuxppc.org
Subject:	Re: MPC860T FEC problem


Hi,

in message [ref] you
wrote:

quoted

I'm trying to port linux 2.2.14 on MPC860T and busybox as initrd.

2.2.14 is prehistoric stuff. Don't waste your time on  all  the  bugs
and problems that have been fixed since.

This was me.

We are using this kernel and it is working find for us.

But this isn't my text!

quoted

I have not seen any initializetion of the BCSR4 so i initialize it with

the

quoted

value
that ppcboot uses , so the ENABLE led is on too.

Ummm... What's BCSR4? If PPCBoot initializes it, why do you  have  to
initialize it again?

[me]

Like Wolfgang said why reinvent the wheel

[not me]

quoted

The device isn't working even when i use ppcboot (i configured ppcboot to
use it).

Sic! So get PPCBoot running first.

quoted

1. Why there is no initializetion of BCSR4 in the original code?
2. If BCSR4 must be initialized , what is the correct value?
3. Is any one have a code that succeeded getting FEC device to work?

Most of this depends on your hardware.  We are using the FEC with this
kernel version and it is working fine.  Get the 2.2.14 kernel from
Wolfgang's FTP site if it is still on there the FEC code and lots of other
goodies work with this kernel version.

[not me]

But the 2.2.14 kernel is still there, unused and  unmaintained  since
November 2000.

Sometimes you cannot upgrade to a new kernel version this is possibly
political and not a design decision.  Sometime there is also no reason to
upgrade to a newer kernel version and have to retest all possible variants
of device with the new kernel version.

Sure. But there comes a point in time when it just doesn't make sense
to add more new features to old software - especially when  you  find
that  you  spend more effort on fixing old bugs that it would take to
switch to a new version.

Our 2.4.4 kernel is a good example for this problem.

Wolfgang Denk

--
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
As long as we're going to reinvent the wheel again, we might as  well
try making it round this time.                        - Mike Dennison

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