linux-kernel - Re: Battery charging, battery status on Nokia N9, N950

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Message-ID: <20171107195020.GA19508@amd>
Date:   Tue, 7 Nov 2017 20:50:20 +0100
From:   Pavel Machek <pavel@....cz>
To:     pali.rohar@...il.com, sre@...nel.org,
        kernel list <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-omap@...r.kernel.org, tony@...mide.com, khilman@...nel.org,
        aaro.koskinen@....fi, ivo.g.dimitrov.75@...il.com,
        patrikbachan@...il.com, serge@...lyn.com, abcloriens@...il.com,
        clayton@...ftyguy.net, martijn@...xit.nl,
        sakari.ailus@...ux.intel.com
Subject: Re: Battery charging, battery status on Nokia N9, N950

Hi!

> I'm fighting with battery status & battery charging on Nokia
> N9/N950. https://elinux.org/N950 contains enough info to get battery
> status (and below is first attempt at kernel implementation), but I'm
> not sure what needs to be done to charge the battery (or at least
> power phone from USB).

Nemo recovery system (2824336 Jul 25  2016 zImage-moslo) seems to
either charge phone from USB or at power it from USB.

But 4.13 does not; it seems there are two separate issue.

First, something needs to be done to enable system power from the
USB. I'm not sure what that one would be :-(. Then, it should be
possible to ask bq24153 to charge the battery.

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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