linux-kernel - Re: Fwd: [PATCH 7/8] watchdog: davinci: add "clocks" property

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Message-ID: <20131125121529.GE32081@e106331-lin.cambridge.arm.com>
Date:	Mon, 25 Nov 2013 12:15:29 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	"ivan.khoronzhuk" <ivan.khoronzhuk@...com>
Cc:	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	"wim@...ana.be" <wim@...ana.be>, "nsekhar@...com" <nsekhar@...com>,
	"linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Pawel Moll <Pawel.Moll@....com>,
	"swarren@...dotorg.org" <swarren@...dotorg.org>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...nel.crashing.org" <galak@...nel.crashing.org>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>
Subject: Re: Fwd: [PATCH 7/8] watchdog: davinci: add "clocks" property

On Mon, Nov 25, 2013 at 10:59:45AM +0000, ivan.khoronzhuk wrote:
> On 11/23/2013 07:57 PM, Arnd Bergmann wrote:
> > On Wednesday 06 November 2013, ivan.khoronzhuk wrote:
> >> @@ -7,6 +7,10 @@ Required properties:
> >>   
> >>   - reg : Should contain WDT registers location and length
> >>   
> >> +- clocks: phandle reference to the controller clock.
> >> +         Required only for Keystone arch.
> >> +         See clock-bindings.txt
> >> +
> >>   Optional properties:
> >>   
> >>   - timeout-sec:         Contains the watchdog timeout in seconds
> > 
> > I think it should really be listed under "Optional properties" and the
> > reference to Keystone removed. Note how the binding would need
> > to change otherwise if another platform started to use the clock, which
> > is a little silly.
> > 
> > 	Arnd
> > 
> 
> Ok, I'll move clocks property under "Optional properties" and describe it
> as following:
> 
> Optional properties:
> - timeout-sec : Contains the watchdog timeout in seconds
> - clocks: phandle reference to the controller clock.
> 	  Needed if platform uses clocks.
> 	  See clock-bindings.txt

Nit: clocks aren't just phandles, they have a clock-specifier too (which
might be 0 cells).

Otherwise this looks fine to me.

Mark.
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