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Message-ID: <20121214150841.GA15843@redhat.com>
Date: Fri, 14 Dec 2012 10:08:41 -0500
From: Dave Jones <davej@...hat.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Jamie Lentin <jm@...tin.co.uk>,
Simon Baatz <gmbnomis@...il.com>,
Jason Cooper <jason@...edaemon.net>
Subject: Re: power: Add simple poweroff-gpio driver
On Fri, Dec 14, 2012 at 09:21:50AM +0100, Andrew Lunn wrote:
> > Given this seems to be dependant on device-tree, shouldn't there be
> > some 'depends on' in the kconfig to prevent this showing up on architectures
> > that don't implement it ?
> >
> > > +menuconfig POWER_RESET
> > > + bool "Board level reset or power off"
> > > + help
> > > + Provides a number of drivers which either reset a complete board
> > > + or shut it down, by manipulating the main power supply on the board.
> > > +
> > > + Say Y here to enable board reset and power off
> > > +
> > > +config POWER_RESET_GPIO
> > > + bool "GPIO power-off driver"
> > > + depends on OF_GPIO && POWER_RESET
>
> Don't these depends on here do what you want?
I think it needs to be on the menuconfig, rather than the child options.
I don't have OF_GPIO, but I still got asked for the former.
> > If not, upon seeing this, I suspect many users will ask "how do I know if I need this?"
> > given there's no mention of the sort of hardware this is useful on.
>
> Its a generic driver. I know its useful on various Marvell kirkwood
> and orion5x devices. I've also heard it useful on some Tegra boards.
>
> Are you asking i list these boards?
No, but at least mentioning the architecture might have clued me in quicker that this
wasn't some now ACPI-ism when I saw it on x86.
Dave
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