On Thu, Dec 13, 2012 at 03:51:59PM -0500, Dave Jones wrote:
> On Thu, Dec 13, 2012 at 08:21:57PM +0000, Linux Kernel wrote:
> > Gitweb:
> http://git.kernel.org/linus/;a=commit;h=96ff0f5c7efd4a2205c48a76a6a1fcd2731e6128
> > Commit: 96ff0f5c7efd4a2205c48a76a6a1fcd2731e6128
> > Parent: f4a00139b7cbeff538e616a21f6b57249a9d3ed8
> > Author: Jamie Lentin <j...@lentin.co.uk>
> > AuthorDate: Sat Nov 17 09:51:04 2012 +0100
> > Committer: Jason Cooper <ja...@lakedaemon.net>
> > CommitDate: Sat Nov 24 02:56:38 2012 +0000
> >
> > power: Add simple poweroff-gpio driver
> >
> > Given appropriate devicetree bindings, this driver registers a
> > pm_power_off function to set a GPIO line high/low to power down
> > your board.
>
> 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
Hi Dave
Don't these depends on here do what you want?
> > + help
> > + This driver supports turning off your board via a GPIO line.
> > + If your board needs a GPIO high/low to power down, say Y and
> > + create a binding in your devicetree.
>
> 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?
Thanks
Andrew
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