From: Wolfram Sang <wsa@the-dreams.de>
To: Gao Pan <b54642@freescale.com>
Cc: linux-i2c@vger.kernel.org, B20596@freescale.com,
b38611@freescale.com, u.kleine-koenig@pengutronix.de,
kernel@pengutronix.de, hkallweit1@gmail.com,
s.hauer@pengutronix.de
Subject: Re: [Patch V8] i2c: imx: implement bus recovery
Date: Fri, 23 Oct 2015 11:22:14 +0200 [thread overview]
Message-ID: <20151023092213.GC13380@katana> (raw)
In-Reply-To: <1445221022-6991-1-git-send-email-b54642@freescale.com>
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On Mon, Oct 19, 2015 at 10:17:02AM +0800, Gao Pan wrote:
> Implement bus recovery methods for i2c-imx so we can recover from
> situations where SCL/SDA are stuck low.
>
> Once i2c bus SCL/SDA are stuck low during transfer, config the i2c
> pinctrl to gpio mode by calling pinctrl sleep set function, and then
> use GPIO to emulate the i2c protocol to send nine dummy clock to recover
> i2c device. After recovery, set i2c pinctrl to default group setting.
>
> Signed-off-by: Fugang Duan <B38611@freescale.com>
> Signed-off-by: Gao Pan <b54642@freescale.com>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Can't apply this one. Which one is this against? Should be at least 4.2.
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next prev parent reply other threads:[~2015-10-23 9:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-19 2:17 [Patch V8] i2c: imx: implement bus recovery Gao Pan
2015-10-19 6:31 ` Sascha Hauer
2015-10-23 9:22 ` Wolfram Sang [this message]
-- strict thread matches above, loose matches on Subject: below --
2015-10-23 12:28 Gao Pan
2015-10-23 12:43 ` Wolfram Sang
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