linux-kernel - Re: [PATCH 03/13] RTC: ds1307: Add DS1341 specific power-saving options

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Message-ID: <20160720153836.GS7132@piout.net>
Date:	Wed, 20 Jul 2016 17:38:36 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Andrey Smirnov <andrew.smirnov@...il.com>
Cc:	Rob Herring <robh@...nel.org>, rtc-linux@...glegroups.com,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/13] RTC: ds1307: Add DS1341 specific power-saving
 options

On 20/07/2016 at 07:36:55 -0700, Andrey Smirnov wrote :
> On Wed, Jul 20, 2016 at 2:02 AM, Alexandre Belloni
> <alexandre.belloni@...e-electrons.com> wrote:
> > On 19/07/2016 at 16:56:56 -0700, Andrey Smirnov wrote :
> >> >> I don't see any value in doing that, could you give me a realistic
> >> >> example of a scenario in which a user would want to spend some of
> >> >> uptime with RTC oscillator fault detection/glitch filtering disabled
> >> >> and then enable it?
> >> >>
> >> >
> >> > Well, the issue is not being dynamic, it is differentiating between
> >> > hardware description and user configuration. Configuration must not be in
> >> > DT.
> >>
> >> Why? And I don't mean in a generic sense, but in this particular case.
> >> What is gained by not having this bit of configuration, whose only
> >> consumer is the driver, in the device tree file?
> >>
> >
> > Because configuration doesn't belong to DT. DT is about hardware
> > description, not configuration.
> 
> That doesn't really answer my question. You just re-iterating some
> maxim without explaining what is the point behind applying it.
> 

Well, that is from the device tree specification and how the device tree
maintainers want it...

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com