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From: Heiko Schocher <hs@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2] Reset i2c slave devices during init on mpc5xxx cpus
Date: Sun, 06 Sep 2009 11:09:34 +0200	[thread overview]
Message-ID: <4AA37C4E.3060807@denx.de> (raw)
In-Reply-To: <20090903130433.M74652@coldhaus.com>

Hello Eric,

Eric Millbrandt wrote:
> Reset any i2c devices that may have been interrupted during a system reset.
> Normally this would be accomplished by clocking the line until SCL and SDA
> are released and then sending a start condtiion (From an Atmel datasheet).
> There is no direct access to the i2c pins so instead create start commands
> through the i2c interface.  Send a start command then delay for the SDA Hold
> time, repeat this by disabling/enabling the bus a total of 9 times.
> 
> Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
> ---
> 
> changes since v1
> - Fixed compiler warning

Applied to u-boot-i2c.git

Thanks for your work,

bye
Heiko
-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

      reply	other threads:[~2009-09-06  9:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-03 13:09 [U-Boot] [PATCH v2] Reset i2c slave devices during init on mpc5xxx cpus Eric Millbrandt
2009-09-06  9:09 ` Heiko Schocher [this message]

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