From: Ludovic Desroches <ludovic.desroches@atmel.com>
To: Wolfram Sang <wsa@the-dreams.de>
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>,
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 <wenyou.yang@atmel.com>
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 [thread overview]
Message-ID: <20151130155723.GA29282@odux.rfo.atmel.com> (raw)
In-Reply-To: <20151130151319.GM1513@katana>
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 <wenyou.yang@atmel.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...
>
I think we can use it, I'll rework the patch to convert duration in
number of cycles.
prev parent reply other threads:[~2015-11-30 15:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-24 13:47 [PATCH 1/3] i2c: at91: add setting HOLD field of TWIHS_CWGR via DT Ludovic Desroches
2015-11-24 13:47 ` [PATCH 2/3] i2c: at91: add DT property "atmel,twd-hold-cycles" to binding Ludovic Desroches
2015-11-25 22:46 ` Rob Herring
2015-11-24 13:47 ` [PATCH 3/3] ARM: dts: at91: specify DT property "atmel,twd-hold-cycles" Ludovic Desroches
2015-11-30 15:13 ` [PATCH 1/3] i2c: at91: add setting HOLD field of TWIHS_CWGR via DT Wolfram Sang
2015-11-30 15:57 ` Ludovic Desroches [this message]
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