about the dm9000 in mini2440

Juergen Beisert jbe at pengutronix.de
Fri Dec 7 03:45:17 EST 2012

Yi Qingliang wrote:
> On Thursday, December 06, 2012 12:27:45 PM Eric Bénard wrote:
> > Le Thu, 06 Dec 2012 15:55:23 +0000,
> >
> > Yi Qingliang <niqingliang2003 at gmail.com> a écrit :
> > > the address of dm9000 is 0x28000000, it should be cs5, but in function
> > > "mini2440_devices_init", it set the cs4 instead, why??
> >
> > The mini2440 supported in Barebox is this one and maybe not the one
> > your are using ;-)
> > http://www.friendlyarm.net/products/mini2440
> there is "mini2440 friendlyARM" on my board, whose color is white.
> blue pcb, maybe friendlyARM has multi version mini2440?

FriendlyARM has some copyist. A blue PCB I have never seen yet.

> I say the 0x28000000 is cs5, based on the memory layout picture in the
> manual. although the schematics is same as Juergen Beisert's.

And the schematics says it is CS4.

> I can't get the original disk, only the board. So how to check the EED0?
> ps: In the manual of dm9000, it said that EED0 is pulled down internaly.

Sure. But if you have some power floating around your board the chip might 
detect a high level at system start. But this idea is just a shot into the 


Pengutronix e.K.                              | Juergen Beisert             |
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