linux-kernel - Re: [PATCH v2] drivers: i2c: i2c-st: Update i2c timings

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Message-ID: <20140801174830.GC3277@katana>
Date:	Fri, 1 Aug 2014 19:48:30 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Maxime COQUELIN <maxime.coquelin@...com>
Cc:	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
	Srinivas Kandagatla <srinivas.kandagatla@...il.com>,
	Patrice Chotard <patrice.chotard@...com>, kernel@...inux.com
Subject: Re: [PATCH v2] drivers: i2c: i2c-st: Update i2c timings

On Wed, Jul 23, 2014 at 05:44:07PM +0200, Maxime COQUELIN wrote:
> The i2c timing values specified in the driver are the minimun values defined
> in the I2C specifications.
> The I2C specification does not specify any default or maximum values.
> 
> Some I2C devices are out of spec, such as the HDMI link of the Toshiba 19AV600
> TV, and might not work properly with minimum values.
> 
> This patch adds a 10% margin on all the timings in both Normal and Fast modes.
> 
> Trial and error method have been used to find the minimum margin necessary to
> have the out-of-spec device working, and a security margin has been added.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin@...com>

Applied to for-next, thanks!


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