linux-kernel - Re: [PATCH v4 03/12] mfd: twl-core: Add initial DT support for twl4030/twl6030

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Date:	Mon, 9 Jan 2012 00:38:20 +0100
From:	Samuel Ortiz <sameo@...ux.intel.com>
To:	"Cousson, Benoit" <b-cousson@...com>
Cc:	Grant Likely <grant.likely@...retlab.ca>, rob.herring@...xeda.com,
	tony@...mide.com, linux-omap@...r.kernel.org,
	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	devicetree-discuss@...ts.ozlabs.org, linux-i2c@...r.kernel.org,
	ben-linux@...ff.org, Balaji T K <balajitk@...com>,
	Graeme Gregory <gg@...mlogic.co.uk>
Subject: Re: [PATCH v4 03/12] mfd: twl-core: Add initial DT support for
 twl4030/twl6030

Hi Benoit,

On Tue, Jan 03, 2012 at 03:09:49PM +0100, Cousson, Benoit wrote:
> On 1/2/2012 10:04 AM, Grant Likely wrote:
> > On Thu, Dec 22, 2011 at 03:56:37PM +0100, Benoit Cousson wrote:
> >> Add initial device-tree support for twl familly chips.
> >> The current version is missing the regulator entries due
> >> to the lack of DT regulator bindings for the moment.
> >> Only the simple sub-modules that do not depend on
> >> platform_data information can be initialized properly.
> >>
> >> Add irqdomain support.
> >>
> >> Add documentation for the Texas Instruments TWL Integrated Chip.
> >>
> >> Signed-off-by: Benoit Cousson<b-cousson@...com>
> >> Cc: Balaji T K<balajitk@...com>
> >> Cc: Graeme Gregory<gg@...mlogic.co.uk>
> >> Cc: Samuel Ortiz<sameo@...ux.intel.com>
> >> ---
> >> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> >> index f1391c2..f0de088 100644
> >> --- a/drivers/mfd/Kconfig
> >> +++ b/drivers/mfd/Kconfig
> >> @@ -200,6 +200,7 @@ config MENELAUS
> >>   config TWL4030_CORE
> >>   	bool "Texas Instruments TWL4030/TWL5030/TWL6030/TPS659x0 Support"
> >>   	depends on I2C=y&&  GENERIC_HARDIRQS
> >> +	select IRQ_DOMAIN
> > 
> > As discussed on linux-next, this breaks powerpc.  Drivers cannot select
> > IRQ_DOMAIN, it can only be selected by architectures.  Drivers must depend
> > on it instead.
> 
> OK, good to know. The previous version was already breaking non-ARM platform because the IRQ_DOMAIN was not defined, hence this update.
> I was able to check that this patch was fixing at least x86... but did not have any way to check the PPC build.
> 
> To be honest, I did not fully understand that this flag was there because some arch does not support IRQ domain yet and thus it should be selected at arch level.
> 
> Samuel,
> Here is the updated version, and hopefully the last one, including Grant's fix.
> 
Thanks, I applied it now.

Cheers,
Samuel.

-- 
Intel Open Source Technology Centre
http://oss.intel.com/
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