From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ludovic Desroches Subject: Re: [PATCH 1/3] i2c: at91: add setting HOLD field of TWIHS_CWGR via DT Date: Mon, 30 Nov 2015 16:57:23 +0100 Message-ID: <20151130155723.GA29282@odux.rfo.atmel.com> References: <1448372862-11912-1-git-send-email-ludovic.desroches@atmel.com> <20151130151319.GM1513@katana> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Return-path: Content-Disposition: inline In-Reply-To: <20151130151319.GM1513@katana> Sender: linux-i2c-owner@vger.kernel.org To: Wolfram Sang Cc: Ludovic Desroches , nicolas.ferre@atmel.com, alexandre.belloni@free-electrons.com, plagnioj@jcrosoft.com, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, cyrille.pichen@atmel.com, Wenyou Yang List-Id: devicetree@vger.kernel.org On Mon, Nov 30, 2015 at 04:13:20PM +0100, Wolfram Sang wrote: > On Tue, Nov 24, 2015 at 02:47:40PM +0100, Ludovic Desroches wrote: > > From: Wenyou Yang > > > > 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... > I think we can use it, I'll rework the patch to convert duration in number of cycles.