linux-kernel - Re: [PATCH 5/7] soc: brcmstb: add wake-timer driver

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Message-ID: <55F4846D.5040304@gmail.com>
Date:	Sat, 12 Sep 2015 13:00:45 -0700
From:	Florian Fainelli <f.fainelli@...il.com>
To:	Brian Norris <computersforpeace@...il.com>,
	Gregory Fong <gregory.0xf0@...il.com>
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH 5/7] soc: brcmstb: add wake-timer driver

Le 06/18/15 17:11, Brian Norris a écrit :
> Useful for waking the system from suspend after a specified period of
> time.
> 
> This IP could potentially be supported as an RTC driver (for use with
> the 'rtcwake' utility), but it is not battery backed, so that's not a
> great fit. Implement a custom sysfs interface instead.

I would very much like to see this driver be implemented as a degenerate
RTC driver because this sorts of maps pretty well to the "rtcwake" use
mode, and this is a persistent clock source, and even a clock source as
well (I would rather avoid going the MFD route to expose these 3
"functions" though).

Thanks!
-- 
Florian
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