From: phorton@bitbox.co.uk (Peter Horton)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] Fix AT91SAM9G20 reset
Date: Thu, 14 Oct 2010 16:31:19 +0100 [thread overview]
Message-ID: <4CB72247.40206@bitbox.co.uk> (raw)
In-Reply-To: <4CB706FC.3000308@atmel.com>
On 14/10/2010 14:34, Nicolas Ferre wrote:
> Le 28/05/2010 17:37, Peter Horton :
>> Fix AT91SAM9G20 as per the errata in the datasheet.
>>
>> If the SDRAM is not cleanly shutdown before reset it can be left driving
>> the bus, which then stops the bootloader booting from NAND.
>>
>> Signed-off-by: Peter Horton<phorton@bitbox.co.uk>
>
> Thanks a lot for writing this patch. I am in the process of reviewing it
> and extending it to other processors.
>
> [..]
>
>> --- /dev/null 1970-01-01 00:00:00.000000000 +0000
>> +++ linux-2.6.32/arch/arm/mach-at91/at91sam9g20_reset.S 2009-12-09 13:33:28.000000000 +0000
>> @@ -0,0 +1,52 @@
>> +/*
>> + * (C) BitBox Ltd 2010
>> + *
>> + * reset AT91SAM9G20 as per errata
>> + *
>> + * unless the SDRAM is cleanly shutdown before we hit the
>> + * reset register it can be left driving the data bus and
>> + * killing the chance of a subsequent boot from NAND
>
> Can I add License sentence to this file? Like this one:
>
> * This program is free software; you can redistribute it and/or modify
> * it under the terms of the GNU General Public License as published by
> * the Free Software Foundation; either version 2 of the License, or
> * (at your option) any later version.
>
No problem.
P.
next prev parent reply other threads:[~2010-10-14 15:31 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-28 15:37 [PATCH] Fix AT91SAM9G20 reset Peter Horton
2010-06-21 14:30 ` Lucas
2010-06-21 15:14 ` Peter Horton
2010-10-14 13:34 ` Nicolas Ferre
2010-10-14 15:31 ` Peter Horton [this message]
2010-10-14 17:25 ` [PATCH 1/5] Fix AT91SAM9G20 reset as per the errata in the data sheet Nicolas Ferre
2010-10-15 12:29 ` Jean-Christophe PLAGNIOL-VILLARD
2010-10-19 10:05 ` Nicolas Ferre
2010-10-14 17:25 ` [PATCH 2/5] AT91: trivial: align comment of at91sam9g20_reset with one more tab Nicolas Ferre
2010-10-14 17:25 ` [PATCH 3/5] AT91: reset routine cleanup Nicolas Ferre
2010-10-14 17:25 ` [PATCH 4/5] AT91: rename at91sam9g20_reset.S to generalize to several chips Nicolas Ferre
2010-10-14 17:25 ` [PATCH 5/5] AT91: reset: extend alternate reset procedure " Nicolas Ferre
-- strict thread matches above, loose matches on Subject: below --
2010-04-13 8:31 [PATCH] Fix AT91SAM9G20 reset Peter Horton
2009-12-15 9:59 Peter Horton
2009-12-09 13:50 Peter Horton
2009-12-09 14:09 ` Paulius Zaleckas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4CB72247.40206@bitbox.co.uk \
--to=phorton@bitbox.co.uk \
--cc=linux-arm-kernel@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).