From mboxrd@z Thu Jan  1 00:00:00 1970
From: Anton Vorontsov <avorontsov@ru.mvista.com>
Date: Thu, 9 Oct 2008 14:08:09 +0400
Subject: [U-Boot] [PATCH] mpc83xx: fix PCI scan hang on
	the	standaloneMPC837xE-MDS boards
In-Reply-To: <79C363B768933F4FB918025FF7EB888830D73A@zch01exm21.fsl.freescale.net>
References: <20081002151733.GA8589@oksana.dev.rtsoft.ru>
	<79C363B768933F4FB918025FF7EB888830D73A@zch01exm21.fsl.freescale.net>
Message-ID: <20081009100809.GA11935@oksana.dev.rtsoft.ru>
List-Id: <u-boot.lists.denx.de>
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To: u-boot@lists.denx.de

Hi,

On Thu, Oct 09, 2008 at 01:01:04PM +0800, Liu Dave-R63238 wrote:
> Hello Anton,
> 
> 1)
> I strongly suggest you use the hardware reset configuration word from
> flash,
> not from FPGA.

Well, then we always have to re-flash the u-boot for every change
of the SGMII/RGMII setup... not very convenient. :-/

Other option is to use I2C EEPROM as a HRCW source, and change
SGMII/RGMII setup there. But this feels quite hackish... Never tried
this approach though.

> You can set the PCI host and internal arbiter enabled in the HRCW in
> flash
> to avoid these issue.

Luckily there is easy workaround for this problem.

> 2)
> Also, I strongly suggest you use the production 837xEMDS pilot rev2.05
> board.
> Because the early 837xEMDS board is missing PCI bus pull up resistors.

Much thanks for the information.

-- 
Anton Vorontsov
email: cbouatmailru at gmail.com
irc://irc.freenode.net/bd2