From: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
To: ben-linux-elnMNo+KYs3YtjvyW6yDsg@public.gmane.org,
w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org
Cc: Alok Chauhan <alokc-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org,
olof-nZhT3qVonbNeoWH0uzbU5w@public.gmane.org,
bones-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org,
omaplinuxkernel-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
ccross-z5hGa2qSFaRBDgjK7y7TUQ@public.gmane.org,
ldewangan-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org,
linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
dgreid-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2] i2c: tegra: Add delay before reset the controller
Date: Fri, 13 Apr 2012 16:51:20 -0600 [thread overview]
Message-ID: <4F88ADE8.4020200@wwwdotorg.org> (raw)
In-Reply-To: <4F7A0500.3060305-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
On 04/02/2012 01:58 PM, Stephen Warren wrote:
> On 04/01/2012 11:53 PM, Alok Chauhan wrote:
>> NACK interrupt generated before I2C controller generates
>> the STOP condition on bus. In Software, because of this
>> reset of controller is happening before I2C controller could
>> complete STOP condition. So wait for some time before resetting
>> the controller so that STOP condition has delivered properly on bus.
>>
>> Added delay of 2 clock period before reset the
>> controller in case of NACK error.
>>
>> Signed-off-by: Alok Chauhan <alokc-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
>
> Acked-by: Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
Wolfram, Ben, can this be picked up for 3.5?
WARNING: multiple messages have this Message-ID (diff)
From: Stephen Warren <swarren@wwwdotorg.org>
To: ben-linux@fluff.org, w.sang@pengutronix.de
Cc: Alok Chauhan <alokc@nvidia.com>,
khali@linux-fr.org, olof@lixom.net, bones@secretlab.ca,
omaplinuxkernel@gmail.com, ccross@android.com,
ldewangan@nvidia.com, linux-tegra@vger.kernel.org,
linux-i2c@vger.kernel.org, dgreid@chromium.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] i2c: tegra: Add delay before reset the controller
Date: Fri, 13 Apr 2012 16:51:20 -0600 [thread overview]
Message-ID: <4F88ADE8.4020200@wwwdotorg.org> (raw)
In-Reply-To: <4F7A0500.3060305@wwwdotorg.org>
On 04/02/2012 01:58 PM, Stephen Warren wrote:
> On 04/01/2012 11:53 PM, Alok Chauhan wrote:
>> NACK interrupt generated before I2C controller generates
>> the STOP condition on bus. In Software, because of this
>> reset of controller is happening before I2C controller could
>> complete STOP condition. So wait for some time before resetting
>> the controller so that STOP condition has delivered properly on bus.
>>
>> Added delay of 2 clock period before reset the
>> controller in case of NACK error.
>>
>> Signed-off-by: Alok Chauhan <alokc@nvidia.com>
>
> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Wolfram, Ben, can this be picked up for 3.5?
next prev parent reply other threads:[~2012-04-13 22:51 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-02 5:53 [PATCH v2] i2c: tegra: Add delay before reset the controller Alok Chauhan
2012-04-02 5:53 ` Alok Chauhan
[not found] ` <1333345982-16595-1-git-send-email-alokc-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-04-02 5:59 ` Alok Chauhan
2012-04-02 5:59 ` Alok Chauhan
[not found] ` <7A0BFCFE3DA5CD47B0FB7984326F201A136BDCC35E-kdsAE/FnitNDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2012-04-02 10:19 ` Shubhrajyoti Datta
2012-04-02 10:19 ` Shubhrajyoti Datta
[not found] ` <CAM=Q2cuN+qAjDsBNp5Sq_Xs9KGcOQJ+PwjSVW-F0QczxMpWZRQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-04-02 12:06 ` Alok Chauhan
2012-04-02 12:06 ` Alok Chauhan
2012-04-02 19:58 ` Stephen Warren
2012-04-02 19:58 ` Stephen Warren
[not found] ` <4F7A0500.3060305-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-04-13 22:51 ` Stephen Warren [this message]
2012-04-13 22:51 ` Stephen Warren
2012-04-18 14:27 ` Wolfram Sang
2012-04-18 14:27 ` Wolfram Sang
2012-04-18 20:02 ` Stephen Warren
[not found] ` <4F8F1DBD.8000009-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-04-18 20:20 ` Wolfram Sang
2012-04-18 20:20 ` Wolfram Sang
-- strict thread matches above, loose matches on Subject: below --
2011-12-26 11:14 Alok Chauhan
2011-12-26 11:14 ` Alok Chauhan
[not found] ` <1324898081-10308-1-git-send-email-alokc-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>
2012-01-06 16:18 ` Ben Dooks
2012-01-06 16:18 ` Ben Dooks
2012-01-10 4:12 ` Alok Chauhan
[not found] ` <7A0BFCFE3DA5CD47B0FB7984326F201A134F2CD4F1-kdsAE/FnitNDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2012-02-10 9:20 ` Alok Chauhan
2012-02-10 9:20 ` Alok Chauhan
2012-02-10 9:35 ` Shubhrajyoti Datta
[not found] ` <CAM=Q2cs+myCvph7OXvCDTG7y48oNTfRtjsDzQaKiEXzjdu3pzA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-02-14 5:49 ` Alok Chauhan
2012-02-14 5:49 ` Alok Chauhan
[not found] ` <7A0BFCFE3DA5CD47B0FB7984326F201A13689D386F-kdsAE/FnitNDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2012-03-08 6:29 ` Alok Chauhan
2012-03-08 6:29 ` Alok Chauhan
[not found] ` <7A0BFCFE3DA5CD47B0FB7984326F201A136B886672-kdsAE/FnitNDw2glCA4ptUEOCMrvLtNR@public.gmane.org>
2012-03-08 16:30 ` Stephen Warren
[not found] ` <4F58DEB8.9060103-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-03-26 21:09 ` Dylan Reid
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