From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Rob Herring <robh@kernel.org>,
rtc-linux@googlegroups.com,
Alessandro Zummo <a.zummo@towertech.it>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [rtc-linux] Re: [PATCH 03/13] RTC: ds1307: Add DS1341 specific power-saving options
Date: Wed, 20 Jul 2016 17:38:36 +0200 [thread overview]
Message-ID: <20160720153836.GS7132@piout.net> (raw)
In-Reply-To: <CAHQ1cqEoN7PEQApHBo-FOqumtLJWoURHOPZfrzL=6h2p4S0Fdg@mail.gmail.com>
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@free-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
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WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Belloni <alexandre.belloni-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Andrey Smirnov <andrew.smirnov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
rtc-linux-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
Alessandro Zummo
<a.zummo-BfzFCNDTiLLj+vYz1yj4TQ@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 03/13] RTC: ds1307: Add DS1341 specific power-saving options
Date: Wed, 20 Jul 2016 17:38:36 +0200 [thread overview]
Message-ID: <20160720153836.GS7132@piout.net> (raw)
In-Reply-To: <CAHQ1cqEoN7PEQApHBo-FOqumtLJWoURHOPZfrzL=6h2p4S0Fdg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> 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
--
You received this message because you are subscribed to "rtc-linux".
Membership options at http://groups.google.com/group/rtc-linux .
Please read http://groups.google.com/group/rtc-linux/web/checklist
before submitting a driver.
---
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WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Rob Herring <robh@kernel.org>,
rtc-linux@googlegroups.com,
Alessandro Zummo <a.zummo@towertech.it>,
Pawel Moll <pawel.moll@arm.com>,
Mark Rutland <mark.rutland@arm.com>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Kumar Gala <galak@codeaurora.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 03/13] RTC: ds1307: Add DS1341 specific power-saving options
Date: Wed, 20 Jul 2016 17:38:36 +0200 [thread overview]
Message-ID: <20160720153836.GS7132@piout.net> (raw)
In-Reply-To: <CAHQ1cqEoN7PEQApHBo-FOqumtLJWoURHOPZfrzL=6h2p4S0Fdg@mail.gmail.com>
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@free-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
next prev parent reply other threads:[~2016-07-20 15:38 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-15 5:59 [rtc-linux] [PATCH 00/13] DS1341 support and code cleanup Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 01/13] RTC: ds1307: Add DS1341 variant Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 02/13] RTC: ds1307: Disable square wave and timers as default Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 03/13] RTC: ds1307: Add DS1341 specific power-saving options Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-19 14:29 ` [rtc-linux] " Rob Herring
2016-06-19 14:29 ` Rob Herring
2016-06-19 14:29 ` Rob Herring
2016-06-19 18:12 ` [rtc-linux] " Andrey Smirnov
2016-06-19 18:12 ` Andrey Smirnov
2016-06-19 18:12 ` Andrey Smirnov
2016-06-21 20:49 ` [rtc-linux] " Rob Herring
2016-06-21 20:49 ` Rob Herring
2016-06-21 20:49 ` Rob Herring
2016-06-21 21:07 ` [rtc-linux] " Alexandre Belloni
2016-06-21 21:07 ` Alexandre Belloni
2016-06-21 21:07 ` Alexandre Belloni
2016-06-22 2:34 ` [rtc-linux] " Andrey Smirnov
2016-06-22 2:34 ` Andrey Smirnov
2016-06-22 2:34 ` Andrey Smirnov
2016-07-12 16:21 ` [rtc-linux] " Andrey Smirnov
2016-07-12 16:21 ` Andrey Smirnov
2016-07-12 16:21 ` Andrey Smirnov
2016-07-19 22:47 ` [rtc-linux] " Alexandre Belloni
2016-07-19 22:47 ` Alexandre Belloni
2016-07-19 22:47 ` Alexandre Belloni
2016-07-19 23:56 ` [rtc-linux] " Andrey Smirnov
2016-07-19 23:56 ` Andrey Smirnov
2016-07-19 23:56 ` Andrey Smirnov
2016-07-20 9:02 ` [rtc-linux] " Alexandre Belloni
2016-07-20 9:02 ` Alexandre Belloni
2016-07-20 14:36 ` [rtc-linux] " Andrey Smirnov
2016-07-20 14:36 ` Andrey Smirnov
2016-07-20 14:36 ` Andrey Smirnov
2016-07-20 15:38 ` Alexandre Belloni [this message]
2016-07-20 15:38 ` Alexandre Belloni
2016-07-20 15:38 ` Alexandre Belloni
2016-07-20 16:11 ` [rtc-linux] " Andrey Smirnov
2016-07-20 16:11 ` Andrey Smirnov
2016-07-20 16:11 ` Andrey Smirnov
2016-06-21 23:23 ` [rtc-linux] " Andrey Smirnov
2016-06-21 23:23 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 04/13] RTC: ds1307: Convert ds1307_can_wakeup_device into a predicate Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 05/13] RTC: ds1307: Convert want_irq " Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 06/13] RTC: ds1307: Move chip configuration into a separate routine Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 07/13] RTC: ds1307: Move chip sanity checking " Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 08/13] RTC: ds1307: Remove register "cache" Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 09/13] RTC: ds1307: Constify struct ds1307 where possible Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 10/13] RTC: ds1307: Convert goto to a loop Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 11/13] RTC: ds1307: Redefine RX8025_REG_* to minimize extra code Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 12/13] RTC: ds1307: Report oscillator problems more intelligently Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
2016-06-15 5:59 ` [rtc-linux] [PATCH 13/13] RTC: ds1307: Move last bits of sanity checking out of chip_configure Andrey Smirnov
2016-06-15 5:59 ` Andrey Smirnov
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