linux-kernel - Re: [PATCH v4 2/4] power: reset: add reboot mode driver

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Date:	Tue, 1 Mar 2016 10:29:09 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	Andy Yan <andy.yan@...k-chips.com>
Cc:	Rob Herring <robh+dt@...nel.org>, Arnd Bergmann <arnd@...db.de>,
	Heiko Stübner <heiko@...ech.de>,
	Paweł Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	lkml <linux-kernel@...r.kernel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Olof Johansson <olof@...om.net>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	Sebastian Reichel <sre@...nel.org>,
	Jun Nie <jun.nie@...aro.org>,
	Eduardo Valentin <edubezval@...il.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Will Deacon <will.deacon@....com>,
	"open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>,
	Caesar Wang <wxt@...k-chips.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Moritz Fischer <moritz.fischer@...us.com>,
	Richard Weinberger <richard@....at>,
	David Woodhouse <dwmw2@...radead.org>
Subject: Re: [PATCH v4 2/4] power: reset: add reboot mode driver

On Tue, Mar 1, 2016 at 4:12 AM, Andy Yan <andy.yan@...k-chips.com> wrote:
> This driver parse the reboot commands like "reboot loader"
> and "reboot recovery" to get a boot mode described in the
> device tree , then call the write interfae to store the boot
> mode in some place like special register or sram , which can
> be read by the bootloader after system reboot, then the bootloader
> can take different action according to the mode stored.
>
> This is commonly used on Android based devices, in order to
> reboot the device into fastboot or recovery mode.
>
> Reviewed-by: Matthias Brugger <matthias.bgg@...il.com>
> Reviewed-by: Moritz Fischer <moritz.fischer@...us.com>
> Signed-off-by: Andy Yan <andy.yan@...k-chips.com>


Thanks Andy for your persistence pushing this!

This patch works well on my nexus7.

Tested-by: John Stultz <john.stultz@...aro.org>
Acked-by: John Stultz <john.stultz@...aro.org>

thanks
-john