From: Thierry Reding <thierry.reding@gmail.com>
To: Sowjanya Komatineni <skomatineni@nvidia.com>
Cc: jonathanh@nvidia.com, mkarthik@nvidia.com, smohammed@nvidia.com,
talho@nvidia.com, linux-tegra@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org
Subject: Re: [PATCH V8 2/5] i2c: tegra: Add Bus Clear Master Support
Date: Thu, 31 Jan 2019 13:44:57 +0100 [thread overview]
Message-ID: <20190131124457.GH23438@ulmo> (raw)
In-Reply-To: <1548915387-28826-2-git-send-email-skomatineni@nvidia.com>
[-- Attachment #1: Type: text/plain, Size: 999 bytes --]
On Wed, Jan 30, 2019 at 10:16:24PM -0800, Sowjanya Komatineni wrote:
> Bus clear feature of tegra i2c controller helps to recover from
> bus hang when i2c master loses the bus arbitration due to the
> slave device holding SDA LOW continuously for some unknown reasons.
>
> Per I2C specification, the device that held the bus LOW should
> release it within 9 clock pulses.
>
> During bus clear operation, Tegra I2C controller sends 9 clock
> pulses and terminates the transaction with STOP condition.
> Upon successful bus clear operation, bus goes to idle state and
> driver retries the transaction.
>
> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
> ---
> [V5/V6/V7/V8]: Same as V4
> [V4]: Added I2C Bus Clear support patch to this version of series.
>
> drivers/i2c/busses/i2c-tegra.c | 71 ++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 71 insertions(+)
See my comments on v7, with that:
Acked-by: Thierry Reding <treding@nvidia.com>
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 833 bytes --]
next prev parent reply other threads:[~2019-01-31 12:44 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-31 6:16 [PATCH V8 1/5] i2c: tegra: Sort all the include headers alphabetically Sowjanya Komatineni
2019-01-31 6:16 ` Sowjanya Komatineni
2019-01-31 6:16 ` [PATCH V8 2/5] i2c: tegra: Add Bus Clear Master Support Sowjanya Komatineni
2019-01-31 6:16 ` Sowjanya Komatineni
2019-01-31 12:44 ` Thierry Reding [this message]
2019-01-31 15:16 ` Dmitry Osipenko
2019-01-31 6:16 ` [PATCH V8 3/5] i2c: tegra: Add DMA Support Sowjanya Komatineni
2019-01-31 6:16 ` Sowjanya Komatineni
2019-01-31 12:44 ` Thierry Reding
2019-01-31 16:41 ` Sowjanya Komatineni
2019-02-01 0:52 ` Dmitry Osipenko
2019-02-01 1:11 ` Sowjanya Komatineni
2019-02-01 3:14 ` Dmitry Osipenko
2019-02-01 4:19 ` Sowjanya Komatineni
2019-02-01 15:02 ` Dmitry Osipenko
2019-01-31 15:12 ` Dmitry Osipenko
2019-01-31 15:24 ` Dmitry Osipenko
2019-01-31 16:56 ` Sowjanya Komatineni
2019-01-31 17:11 ` Dmitry Osipenko
2019-01-31 17:25 ` Dmitry Osipenko
2019-01-31 17:38 ` Dmitry Osipenko
2019-01-31 17:38 ` Sowjanya Komatineni
2019-01-31 21:46 ` Sowjanya Komatineni
2019-02-01 0:54 ` Dmitry Osipenko
2019-01-31 6:16 ` [PATCH V8 4/5] i2c: tegra: Update transfer timeout Sowjanya Komatineni
2019-01-31 6:16 ` Sowjanya Komatineni
2019-01-31 12:48 ` Thierry Reding
2019-01-31 6:16 ` [PATCH V8 5/5] i2c: tegra: Add I2C interface timing support Sowjanya Komatineni
2019-01-31 6:16 ` Sowjanya Komatineni
2019-01-31 12:50 ` Thierry Reding
2019-01-31 12:45 ` [PATCH V8 1/5] i2c: tegra: Sort all the include headers alphabetically Thierry Reding
2019-01-31 15:14 ` Dmitry Osipenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190131124457.GH23438@ulmo \
--to=thierry.reding@gmail.com \
--cc=jonathanh@nvidia.com \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-tegra@vger.kernel.org \
--cc=mkarthik@nvidia.com \
--cc=skomatineni@nvidia.com \
--cc=smohammed@nvidia.com \
--cc=talho@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.