linux-kernel - RE: [PATCH 3/4] rtc: omap: add rtc wakeup support to alarm events

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Date:	Tue, 2 Jul 2013 05:20:53 +0000
From:	"Hebbar, Gururaja" <gururaja.hebbar@...com>
To:	Kevin Hilman <khilman@...aro.org>
CC:	"tony@...mide.com" <tony@...mide.com>,
	"Cousson, Benoit" <b-cousson@...com>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"davinci-linux-open-source@...ux.davincidsp.com" 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	"Bedia, Vaibhav" <vaibhav.bedia@...com>,
	"Rajashekhara, Sudhakar" <sudhakar.raj@...com>,
	"Grant Likely" <grant.likely@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	"Rob Landley" <rob@...dley.net>, "Nori, Sekhar" <nsekhar@...com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	"rtc-linux@...glegroups.com" <rtc-linux@...glegroups.com>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
Subject: RE: [PATCH 3/4] rtc: omap: add rtc wakeup support to alarm events

On Tue, Jul 02, 2013 at 05:45:01, Kevin Hilman wrote:
> Hebbar Gururaja <gururaja.hebbar@...com> writes:
> 
> > On some platforms (like AM33xx), a special register (RTC_IRQWAKEEN)
> > is available to enable Alarm Wakeup feature. This register needs to be
> > properly handled for the rtcwake to work properly.
> >
> > Platforms using such IP should set "ti,am3352-rtc" in rtc device dt
> > compatibility node.
> >
> > Signed-off-by: Hebbar Gururaja <gururaja.hebbar@...com>
> > Cc: Grant Likely <grant.likely@...aro.org>
> > Cc: Rob Herring <rob.herring@...xeda.com>
> > Cc: Rob Landley <rob@...dley.net>
> > Cc: Sekhar Nori <nsekhar@...com>
> > Cc: Kevin Hilman <khilman@...aro.org>
> > Cc: Alessandro Zummo <a.zummo@...ertech.it>
> > Cc: rtc-linux@...glegroups.com
> > Cc: devicetree-discuss@...ts.ozlabs.org
> > Cc: linux-doc@...r.kernel.org
> 
> Acked-by: Kevin Hilman <khilman@...aro.org>
> 
> ...with a minor nit below...
> 
> > ---
> > :100644 100644 b47aa41... 5a0f02d... M	Documentation/devicetree/bindings/rtc/rtc-omap.txt
> > :100644 100644 761919d... 666b0c2... M	drivers/rtc/rtc-omap.c
> >  Documentation/devicetree/bindings/rtc/rtc-omap.txt |    6 ++-
> >  drivers/rtc/rtc-omap.c                             |   56 +++++++++++++++++---
> >  2 files changed, 54 insertions(+), 8 deletions(-)
> >
> > diff --git a/Documentation/devicetree/bindings/rtc/rtc-omap.txt b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
> > index b47aa41..5a0f02d 100644
> > --- a/Documentation/devicetree/bindings/rtc/rtc-omap.txt
> > +++ b/Documentation/devicetree/bindings/rtc/rtc-omap.txt
> > @@ -1,7 +1,11 @@
> >  TI Real Time Clock
> >  
> >  Required properties:
> > -- compatible: "ti,da830-rtc"
> > +- compatible:
> > +	- "ti,da830-rtc"  - for RTC IP used similar to that on DA8xx SoC family.
> > +	- "ti,am3352-rtc" - for RTC IP used similar to that on AM335x SoC family.
> > +			    This RTC IP has special WAKE-EN Register to enable
> > +			    Wakeup generation for event Alarm.
> >  - reg: Address range of rtc register set
> >  - interrupts: rtc timer, alarm interrupts in order
> >  - interrupt-parent: phandle for the interrupt controller
> > diff --git a/drivers/rtc/rtc-omap.c b/drivers/rtc/rtc-omap.c
> > index 761919d..666b0c2 100644
> > --- a/drivers/rtc/rtc-omap.c
> > +++ b/drivers/rtc/rtc-omap.c
> > @@ -72,6 +72,8 @@
> >  #define OMAP_RTC_KICK0_REG		0x6c
> >  #define OMAP_RTC_KICK1_REG		0x70
> >  
> > +#define OMAP_RTC_IRQWAKEEN		0x7C
> > +
> 
> nit: letters in hex numbers are usually lower-case.

Thanks for the review. V2 will soon follow.

> 
> 
> Kevin
> 


Regards, 
Gururaja
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