PPC440GX ethernet oddities

[Wolfgang Denk]

In message <456A641D.7070904 at mock.com> you wrote:
>
> Here's the weird part.  On one of the four prototype boxes, if I plug
> the second ethernet port into gigabit switch and get a link light (2nd
> interface is not enabled under linux), the DMA behavior will change and
> I can see the ring buffer get as large as 25MB (up from 512kB!)
> 
> Only one of my four boxes shows this strange behavior, and only when the
> second ethernet port is connected to an ethernet switch. Everything

Are you using exactly the same switch,  and  the  same  port  on  the
switch, and the same network cable with all of your boxen?

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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