linux-kernel - Re: [PATCH v2 1/2] i2c designware make SCL and SDA falling time configurable

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Message-ID: <20140309082032.GD2575@katana>
Date:	Sun, 9 Mar 2014 09:20:32 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Romain Baeriswyl <Romain.Baeriswyl@...lis.com>
Cc:	rmallon@...il.com, mika.westerberg@...ux.intel.com,
	rob.herring@...xeda.com, pawel.moll@....com, mark.rutland@....com,
	swarren@...dotorg.org, ijc+devicetree@...lion.org.uk,
	rob@...dley.net, pierrick.hascoet@...lis.com, vgupta@...opsys.com,
	christian.ruppert@...lis.com, chiau.ee.chew@...el.com,
	khali@...ux-fr.org, rafael.j.wysocki@...el.com,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
	romainba@...lis.com
Subject: Re: [PATCH v2 1/2] i2c designware make SCL and SDA falling time
 configurable

On Mon, Jan 20, 2014 at 05:43:43PM +0100, Romain Baeriswyl wrote:
> This patch allows to set independantly SCL and SDA falling times.
> The tLOW period is computed by taking into account the SCL falling time.
> The tHIGH period is computed by taking into account the SDA falling time.
> 
> For instance in case the margin on tLOW is considered too small, it can
> be increased by increasing the SCL falling time which is by default set
> at 300ns.
> 
> The same applies for tHIGH period with the help of SDA falling time.
> 
> Signed-off-by: Romain Baeriswyl <romainba@...lis.com>
> Reviewed-by: Christian Ruppert <christian.ruppert@...lis.com>

Applied to for-next, thanks!


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