From: Mark Jackson <mpfj-list@mimc.co.uk>
To: u-boot@lists.denx.de
Subject: [U-Boot] AM335x : failure to boot SPL from NAND
Date: Tue, 19 Feb 2013 14:55:35 +0000 [thread overview]
Message-ID: <51239267.2060006@mimc.co.uk> (raw)
In-Reply-To: <20130218145419.GA29026@bill-the-cat>
On 18/02/13 14:54, Tom Rini wrote:
> On Mon, Feb 18, 2013 at 02:43:47PM +0000, Mark Jackson wrote:
>> On 15/02/13 21:13, Tom Rini wrote:
>>> On Thu, Feb 14, 2013 at 03:54:23PM +0000, Mark Jackson wrote:
>>>
>>>> I'm trying to diagnose why our AM335x based CPU board (based on the
>>>> AM335x Starter Kit) can boot SPL and U-Boot from an MMC card, but is
>>>> unable to boot from NAND (connected to CS0).
Just a quick update (in case anyone else is in the same boat) ...
Looks like the upper data bus (AD[15:8]) needs to have pullups on it, even though
you're booting from an 8bit device.
I guess the AM335x internal boot code assumes everything is 16bit (even though
SYSBOOT[8] is used to configure 8/16bit device).
Mark J.
next prev parent reply other threads:[~2013-02-19 14:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-14 15:54 [U-Boot] AM335x : failure to boot SPL from NAND Mark Jackson
2013-02-15 21:13 ` Tom Rini
2013-02-18 14:43 ` Mark Jackson
2013-02-18 14:54 ` Tom Rini
2013-02-19 14:55 ` Mark Jackson [this message]
2013-02-21 12:10 ` Mark Jackson
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