From: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
To: Vaibhav Hiremath
<vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Leilei Shang <shangll-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
Subject: Re: [PATCH 05/12] i2c: pxa: Add bus reset functionality
Date: Wed, 3 Jun 2015 02:33:41 +0900 [thread overview]
Message-ID: <20150602173341.GA1494@katana> (raw)
In-Reply-To: <1432818224-17070-6-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
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> Since there is some problematic i2c slave devices on some
> platforms such as dkb (sometimes), it will drop down sda
> and make i2c bus hang, at that time, it need to config
> scl/sda into gpio to simulate "stop" sequence to recover
> i2c bus, so add this interface.
Please note that the i2c core has a bus recovery infrastructure.
Search i2c.h for struct i2c_bus_recovery_info.
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WARNING: multiple messages have this Message-ID (diff)
From: wsa@the-dreams.de (Wolfram Sang)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 05/12] i2c: pxa: Add bus reset functionality
Date: Wed, 3 Jun 2015 02:33:41 +0900 [thread overview]
Message-ID: <20150602173341.GA1494@katana> (raw)
In-Reply-To: <1432818224-17070-6-git-send-email-vaibhav.hiremath@linaro.org>
> Since there is some problematic i2c slave devices on some
> platforms such as dkb (sometimes), it will drop down sda
> and make i2c bus hang, at that time, it need to config
> scl/sda into gpio to simulate "stop" sequence to recover
> i2c bus, so add this interface.
Please note that the i2c core has a bus recovery infrastructure.
Search i2c.h for struct i2c_bus_recovery_info.
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next prev parent reply other threads:[~2015-06-02 17:33 UTC|newest]
Thread overview: 116+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-28 13:03 [PATCH 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-1-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-28 13:03 ` [PATCH 01/12] i2c: pxa: keep i2c irq ON in suspend Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 02/12] i2c: pxa: No need to set slave addr for i2c master mode reset Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
2015-05-29 19:21 ` Robert Jarzmik
2015-05-29 19:21 ` Robert Jarzmik
[not found] ` <87d21jyyua.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-29 19:25 ` Vaibhav Hiremath
2015-05-29 19:25 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 03/12] i2c: pxa: Add reset operation when i2c bus busy Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-4-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 19:39 ` Robert Jarzmik
2015-05-29 19:39 ` Robert Jarzmik
[not found] ` <878uc7yxzx.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-29 20:20 ` Vaibhav Hiremath
2015-05-29 20:20 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 04/12] i2c: pxa: Add support for pxa910/988 & new configuration features Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-5-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 20:22 ` Robert Jarzmik
2015-05-29 20:22 ` Robert Jarzmik
[not found] ` <874mmvyvzw.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-29 20:33 ` Vaibhav Hiremath
2015-05-29 20:33 ` Vaibhav Hiremath
2015-06-04 2:31 ` Yi Zhang
2015-06-04 2:31 ` Yi Zhang
2015-06-04 5:46 ` Vaibhav Hiremath
2015-06-04 5:46 ` Vaibhav Hiremath
2015-06-01 0:13 ` Wolfram Sang
2015-06-01 0:13 ` Wolfram Sang
[not found] ` <4edfb7fe9edf4800e73c86a258fe4fd1-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
2015-06-02 5:01 ` Vaibhav Hiremath
2015-06-02 5:01 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 05/12] i2c: pxa: Add bus reset functionality Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-6-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 13:59 ` Rob Herring
2015-05-29 13:59 ` Rob Herring
[not found] ` <CAL_Jsq+-u7pf7JOXD7frB-ye9bk0NLAKhAJFvLYz1a1jzOCb9Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-05-29 15:40 ` Vaibhav Hiremath
2015-05-29 15:40 ` Vaibhav Hiremath
2015-05-29 20:31 ` Robert Jarzmik
2015-05-29 20:31 ` Robert Jarzmik
2015-06-02 13:12 ` Linus Walleij
2015-06-02 13:12 ` Linus Walleij
[not found] ` <CACRpkdaxWsi8t6aUFJK-KCmQF1gEOLiOE8=fgDRxQDSi4G6FgQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-02 16:40 ` Vaibhav Hiremath
2015-06-02 16:40 ` Vaibhav Hiremath
2015-06-03 19:16 ` Vaibhav Hiremath
2015-06-03 19:16 ` Vaibhav Hiremath
2015-06-02 17:33 ` Wolfram Sang [this message]
2015-06-02 17:33 ` Wolfram Sang
2015-06-02 17:40 ` Vaibhav Hiremath
2015-06-02 17:40 ` Vaibhav Hiremath
[not found] ` <556DEA90.3010001-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-02 17:48 ` Wolfram Sang
2015-06-02 17:48 ` Wolfram Sang
2015-06-02 17:57 ` Vaibhav Hiremath
2015-06-02 17:57 ` Vaibhav Hiremath
[not found] ` <556DEE6C.1060300-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-02 18:02 ` Wolfram Sang
2015-06-02 18:02 ` Wolfram Sang
2015-06-02 18:06 ` Vaibhav Hiremath
2015-06-02 18:06 ` Vaibhav Hiremath
[not found] ` <556DF0A0.30807-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-02 18:24 ` Wolfram Sang
2015-06-02 18:24 ` Wolfram Sang
2015-06-02 18:46 ` Vaibhav Hiremath
2015-06-02 18:46 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 06/12] i2c: pxa: Return I2C_RETRY when timeout in pio mode Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-7-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 20:46 ` Robert Jarzmik
2015-05-29 20:46 ` Robert Jarzmik
[not found] ` <87vbfbxgb0.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-29 21:23 ` Vaibhav Hiremath
2015-05-29 21:23 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 07/12] i2c: pxa: Reset i2c controller on timeout in interrupt and " Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-8-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 21:13 ` Robert Jarzmik
2015-05-29 21:13 ` Robert Jarzmik
[not found] ` <87r3pzxf1s.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-29 21:19 ` Vaibhav Hiremath
2015-05-29 21:19 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 08/12] i2c: pxa: enable/disable irq across message xfer Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-9-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-28 13:17 ` Russell King - ARM Linux
2015-05-28 13:17 ` Russell King - ARM Linux
[not found] ` <20150528131707.GB2067-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2015-05-28 13:29 ` Vaibhav Hiremath
2015-05-28 13:29 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 09/12] i2c: pxa: Remove compile warnning in 64bit mode Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-10-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 21:28 ` Robert Jarzmik
2015-05-29 21:28 ` Robert Jarzmik
2015-05-28 13:03 ` [PATCH 10/12] i2c: pxa: Update debug function to dump more info on error Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-11-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-29 21:42 ` Robert Jarzmik
2015-05-29 21:42 ` Robert Jarzmik
[not found] ` <87fv6fxdqu.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-29 21:45 ` Vaibhav Hiremath
2015-05-29 21:45 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 11/12] i2c:pxa: Use devm_ variants in probe function Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-12-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-30 15:53 ` Robert Jarzmik
2015-05-30 15:53 ` Robert Jarzmik
[not found] ` <878uc6xdsd.fsf-4ty26DBLk+jEm7gnYqmdkQ@public.gmane.org>
2015-05-31 7:36 ` Vaibhav Hiremath
2015-05-31 7:36 ` Vaibhav Hiremath
2015-05-28 13:03 ` [PATCH 12/12] i2c: pxa: enable/disable i2c module across msg xfer Vaibhav Hiremath
2015-05-28 13:03 ` Vaibhav Hiremath
[not found] ` <1432818224-17070-13-git-send-email-vaibhav.hiremath-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-05-28 13:23 ` Russell King - ARM Linux
2015-05-28 13:23 ` Russell King - ARM Linux
[not found] ` <20150528132312.GC2067-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2015-06-02 16:52 ` Vaibhav Hiremath
2015-06-02 16:52 ` Vaibhav Hiremath
[not found] ` <556DDF43.4050804-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-02 16:59 ` Vaibhav Hiremath
2015-06-02 16:59 ` Vaibhav Hiremath
[not found] ` <556DE0EB.1010609-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-03 10:56 ` Yi Zhang
2015-06-03 10:56 ` Yi Zhang
2015-06-03 18:49 ` Vaibhav Hiremath
2015-06-03 18:49 ` Vaibhav Hiremath
2015-06-04 6:29 ` Yi Zhang
2015-06-04 6:29 ` Yi Zhang
2015-06-04 7:19 ` Vaibhav Hiremath
2015-06-04 7:19 ` Vaibhav Hiremath
[not found] ` <556FFC14.3050901-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-06-04 7:58 ` Yi Zhang
2015-06-04 7:58 ` Yi Zhang
2015-06-01 0:07 ` [PATCH 00/12] i2c: pxa: Fixes, cleanup and support for pxa910 family Wolfram Sang
2015-06-01 0:07 ` Wolfram Sang
[not found] ` <fb192019ec75e9aa10b04b79e87a6e79-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
2015-06-02 4:58 ` Vaibhav Hiremath
2015-06-02 4:58 ` Vaibhav Hiremath
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