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From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] ppc4xx:tftp error
Date: Tue, 26 Oct 2010 10:06:55 +0200	[thread overview]
Message-ID: <201010261006.55842.sr@denx.de> (raw)
In-Reply-To: <695788.34867.qm@web120320.mail.ne1.yahoo.com>

Hi Tim,

(please try to quote correctly upon replying, your answers are hard to read)

On Tuesday 26 October 2010 09:21:50 Tim Rachman wrote:
> > According to your useful guides in our previous Emails, I examined again
> > my ddr sdram parameters that i had set in u-boot. I'm interfacing
> > HYB25D512160AT?7 to PPC440EP, with 133MHz plb frequency.
> 
> What SDRAM/DDR init code are you using? Is it
> arch/powerpc/cpu/ppc4xx/sdram.c?
>
> 
> Yes, I am. But I changed some parameters according to HYB25D512160AT?7
> datasheet.

Which changes did you make exactly? Are you using the sdram_tr1_set() function 
to "fine-tune" the controller settings?

<snip>
 
> A point: Our custom board doesn't have PCI , Is it possible that some
> setting in PCI routins of yosemite BSP has effect on their shared PLB BUS?

No, I don't think so. But you should create a "real" board port for your 
custom board and remove such unused features as PCI in this process.

> BTW, I focus on SDRAM configuration more, Hopefully problem will be solved.

Good luck.

Cheers,
Stefan

--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de

  reply	other threads:[~2010-10-26  8:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-26  7:21 [U-Boot] ppc4xx:tftp error Tim Rachman
2010-10-26  8:06 ` Stefan Roese [this message]
  -- strict thread matches above, loose matches on Subject: below --
2010-10-13  7:28 Tim Rachman
2010-10-13  7:47 ` Wolfgang Denk
2010-10-24  9:42   ` Tim Rachman
2010-10-25  8:40     ` Stefan Roese

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