S3C2440 : DM9000 link down when writing on NAND flash

S3C2440 : DM9000 link down when writing on NAND flash

[Julien Vermillard]

Hi,
I'm using a DM9000E with a S3C2440 CPU running 2.6.30.1. The DM9K is
connected on the CS4 (like the mini2440). I already had troubles with
the ethernet, and we applied (as suggested here) the DM900 errata
consisting in gating IOR & CS. The DM9000 is working better now, but
when I write some file on the NAND Flash, the DM900 is reseting (link
down, link up). Reading from NAND flash is fine.

If I put the whole rootfs in the SD card, I have no problems.

Here the schematics of the DM9000 and how it's plugged on the CPU :
http://people.apache.org/~jvermillard/atsarm9/

Any suggestion ?

Julien
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 197 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100108/187907b3/attachment.sig>

S3C2440 : DM9000 link down when writing on NAND flash

[Lothar Waßmann]

Hi,

> I'm using a DM9000E with a S3C2440 CPU running 2.6.30.1. The DM9K is
> connected on the CS4 (like the mini2440). I already had troubles with
> the ethernet, and we applied (as suggested here) the DM900 errata
> consisting in gating IOR & CS. The DM9000 is working better now, but
> when I write some file on the NAND Flash, the DM900 is reseting (link
> down, link up). Reading from NAND flash is fine.
> 
I remember to have seen this before. You should search the archives of
the old linux-arm-kernel mailinglist.


Lothar Wa?mann
-- 
___________________________________________________________

Ka-Ro electronics GmbH | Pascalstra?e 22 | D - 52076 Aachen
Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10
Gesch?ftsf?hrer: Matthias Kaussen
Handelsregistereintrag: Amtsgericht Aachen, HRB 4996

www.karo-electronics.de | info at karo-electronics.de
___________________________________________________________

S3C2440 : DM9000 link down when writing on NAND flash

[Julien Vermillard]

Le Fri, 8 Jan 2010 10:35:18 +0100,
Lothar Wa?mann <LW@KARO-electronics.de> a ?crit :

> Hi,
> 
> > I'm using a DM9000E with a S3C2440 CPU running 2.6.30.1. The DM9K is
> > connected on the CS4 (like the mini2440). I already had troubles
> > with the ethernet, and we applied (as suggested here) the DM900
> > errata consisting in gating IOR & CS. The DM9000 is working better
> > now, but when I write some file on the NAND Flash, the DM900 is
> > reseting (link down, link up). Reading from NAND flash is fine.
> > 
> I remember to have seen this before. You should search the archives of
> the old linux-arm-kernel mailinglist.
> 
> 
> Lothar Wa?mann

Already checked, except my old problem, I found nothing.
-- 
Julien Vermillard

Archean Technologies
http://www.archean.fr
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 197 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20100108/fb1370db/attachment.sig>