From: Wolfram Sang <w.sang@pengutronix.de>
To: Zhao Chenhui <chenhui.zhao@freescale.com>
Cc: linux-i2c@vger.kernel.org, leoli@freescale.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] i2c-mpc: avoid I2C abnormal after resuming from deep sleep
Date: Thu, 19 Apr 2012 13:07:10 +0200 [thread overview]
Message-ID: <20120419110710.GD2206@pengutronix.de> (raw)
In-Reply-To: <1334829094-22048-1-git-send-email-chenhui.zhao@freescale.com>
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On Thu, Apr 19, 2012 at 05:51:34PM +0800, Zhao Chenhui wrote:
> When entering deep sleep, the value in the registers I2CFDR and
> I2CDFSRR are lost. This causes I2C access to fail after resuming.
>
> Add suspend/resume routines to save/restore the registers
> I2CFDR and I2CDFSRR.
>
> Signed-off-by: Zhao Chenhui <chenhui.zhao@freescale.com>
> Signed-off-by: Li Yang <leoli@freescale.com>
Applied to next. Thanks!
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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WARNING: multiple messages have this Message-ID (diff)
From: Wolfram Sang <w.sang-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
To: Zhao Chenhui <chenhui.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
leoli-KZfg59tc24xl57MIdRCFDg@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2] i2c-mpc: avoid I2C abnormal after resuming from deep sleep
Date: Thu, 19 Apr 2012 13:07:10 +0200 [thread overview]
Message-ID: <20120419110710.GD2206@pengutronix.de> (raw)
In-Reply-To: <1334829094-22048-1-git-send-email-chenhui.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
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On Thu, Apr 19, 2012 at 05:51:34PM +0800, Zhao Chenhui wrote:
> When entering deep sleep, the value in the registers I2CFDR and
> I2CDFSRR are lost. This causes I2C access to fail after resuming.
>
> Add suspend/resume routines to save/restore the registers
> I2CFDR and I2CDFSRR.
>
> Signed-off-by: Zhao Chenhui <chenhui.zhao-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
> Signed-off-by: Li Yang <leoli-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Applied to next. Thanks!
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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next prev parent reply other threads:[~2012-04-19 11:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-19 9:51 [PATCH v2] i2c-mpc: avoid I2C abnormal after resuming from deep sleep Zhao Chenhui
2012-04-19 9:51 ` Zhao Chenhui
2012-04-19 11:07 ` Wolfram Sang [this message]
2012-04-19 11:07 ` Wolfram Sang
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