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

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Date:	Tue, 3 Jun 2014 09:59:22 +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] drivers: i2c: i2c-st: Update i2c timings


> >Can you give names here? Would be interesting to know since a few
> >drivers implement the minimum timings.
> 
> I don't have the name actually.
> The request to implement this change came from hw guys.

Can you ask? It feels better to have changes based on facts.

> >>This patch adds a 10% margin on all the timings.
> >
> >Is there a safety margin or do the devices start to work exactly at 10%?
> 
> 10% is a safety margin, I don't know what is the limit.

Which also came from the HW guys? Please ask for details why 10%, too.

Thanks,

   Wolfram


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