linux-kernel - Re: Motorola Droid 4 progress, power consumption

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Message-ID: <20180504214723.GA8010@amd>
Date:   Fri, 4 May 2018 23:47:23 +0200
From:   Pavel Machek <pavel@....cz>
To:     Tony Lindgren <tony@...mide.com>
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, sre@...nel.org, nekit1000@...il.com,
        mpartap@....net, merlijn@...zup.org
Subject: Re: Motorola Droid 4 progress, power consumption

Hi!

> > But I guess I can sample charge_counter every minute or so and get
> > what I need?
> 
> Not sure what the max time range is for the PMIC, but yeah I'd
> assume once a minute is duoable. Maybe compare it to the chart
> you already have?

Yes, I can try some more graph painting.

OTOH... battery life is "good enough" and I can already tell when the
battery is full :-). So this part is not critical.

> > I agree this should not be done in kernel as it requires persistent
> > storage.
> > 
> > Battery is not user-replacable (and this will recalibrate itself on
> > charge/discharge cycle) so.. I don't think keying is strictly
> > neccessary for D4.
> 
> Yeah right, that can be added later on if needed if you just
> plan accordingly. It's replaceable with a T5 after you peel off the
> sticker from the corners :)

Aha, I wanted to ask what kind of phone T5 is, and T5 is probably torx
5 screwdriver, right? Well, I don't have second battery, so these
experiments will have to wait.

Best regards,

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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