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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Alex Courbot <acourbot@nvidia.com>
Cc: "Heiko Stübner" <heiko@sntech.de>,
	"Stephen Warren" <swarren@nvidia.com>,
	"Thierry Reding" <thierry.reding@avionic-design.de>,
	"Simon Glass" <sjg@chromium.org>,
	"Grant Likely" <grant.likely@secretlab.ca>,
	"Rob Herring" <rob.herring@calxeda.com>,
	"Anton Vorontsov" <cbou@mail.ru>,
	"David Woodhouse" <dwmw2@infradead.org>,
	"Arnd Bergmann" <arnd@arndb.de>,
	"Leela Krishna Amudala" <leelakrishna.a@gmail.com>,
	"linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-fbdev@vger.kernel.org" <linux-fbdev@vger.kernel.org>,
	"devicetree-discuss@lists.ozlabs.org"
	<devicetree-discuss@lists.ozlabs.org>,
	"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>
Subject: Re: [PATCH v5 1/4] Runtime Interpreted Power Sequences
Date: Fri, 7 Sep 2012 16:15:03 +0800	[thread overview]
Message-ID: <20120907081501.GA17749@opensource.wolfsonmicro.com> (raw)
In-Reply-To: <1887927.1deN8M9siP@percival>

On Fri, Sep 07, 2012 at 05:04:24PM +0900, Alex Courbot wrote:

> If e.g. the power on sequence fails at step N (of M steps for that sequence), 
> one could try playing the corresponding power off sequence (either completely 
> of from step M - N), but then again we cannot rely on sequences to be 
> perfectly symetrical. Maybe this is more something for the calling driver to 
> check for and control?

That had been my thought too - depending on what the sequence is for it
may be that the corrective action is something very different to
reversing the sequence, for example a device reset may be required.

  reply	other threads:[~2012-09-07  8:15 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-31 11:34 [PATCH v5 0/4] " Alexandre Courbot
2012-08-31 11:34 ` [PATCH v5 1/4] " Alexandre Courbot
2012-09-05 17:19   ` Stephen Warren
2012-09-07  8:21     ` Alex Courbot
2012-09-06 14:14   ` Heiko Stübner
2012-09-07  8:04     ` Alex Courbot
2012-09-07  8:15       ` Mark Brown [this message]
2012-09-07  9:08       ` Heiko Stübner
2012-09-07 16:36         ` Stephen Warren
2012-08-31 11:34 ` [PATCH v5 2/4] pwm_backlight: use power sequences Alexandre Courbot
2012-09-05 17:25   ` Stephen Warren
2012-09-07  8:28     ` Alex Courbot
2012-09-07  8:29       ` Mark Brown
2012-09-07  8:34         ` Alex Courbot
2012-08-31 11:34 ` [PATCH v5 3/4] tegra: dt: add label to tegra20's PWM Alexandre Courbot
2012-08-31 11:34 ` [PATCH v5 4/4] tegra: ventana: add pwm backlight DT nodes Alexandre Courbot

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