linux-kernel - Re: [PATCH 1/3] i2c: at91: add setting HOLD field of TWIHS

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Message-ID: <20151130151319.GM1513@katana>
Date:	Mon, 30 Nov 2015 16:13:20 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Ludovic Desroches <ludovic.desroches@...el.com>
Cc:	nicolas.ferre@...el.com, alexandre.belloni@...e-electrons.com,
	plagnioj@...osoft.com, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, cyrille.pichen@...el.com,
	Wenyou Yang <wenyou.yang@...el.com>
Subject: Re: [PATCH 1/3] i2c: at91: add setting HOLD field of TWIHS_CWGR via
 DT

On Tue, Nov 24, 2015 at 02:47:40PM +0100, Ludovic Desroches wrote:
> From: Wenyou Yang <wenyou.yang@...el.com>
> 
> Add the HOLD field management. Some i2c devices need a longer data hold
> time than the one given in the i2c bus specification. Since this value
> depends on the i2c device connected to the bus, add a DT property to
> configure it: "atmel,twd-hold-cycles".

We already have "i2c-sda-hold-time-ns". Can you use that one? Sorry that
this is not obviously documented, I am working on it...


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