linux-kernel - Re: [PATCH v2 2/3] power: supply: New driver for LEGO MINDSTORMS EV3 battery

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Message-ID: <20170412145343.2bexmzmpovjvgoml@earth>
Date:   Wed, 12 Apr 2017 16:53:43 +0200
From:   Sebastian Reichel <sre@...nel.org>
To:     David Lechner <david@...hnology.com>
Cc:     linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Sekhar Nori <nsekhar@...com>,
        Kevin Hilman <khilman@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] power: supply: New driver for LEGO MINDSTORMS EV3
 battery

Hi,

On Tue, Apr 11, 2017 at 04:05:22PM -0500, David Lechner wrote:
> This adds a new driver for the LEGO MINDSTORMS EV3 battery. The EV3 is
> an embedded ARM device that can use 6 AA batteries or a special rechargeable
> Li-ion battery pack. The rechargeable battery pack presses a special key
> switch in the battery compartment to indicate that it is present.
> 
> The EV3 is only capable of monitoring battery voltage and current. The
> charging circuit is built into the rechargeable battery pack and there is
> no way to communicate with is, so we can't provide any information about
> charging status.
> 
> When not using the rechargeable battery pack, it is most common to use
> alkaline batteries to power the device, but it is also common for people to
> use rechargeable NiMH batteries. Since there is not a way to automatically
> differentiate between these, the technology property is made writable.
> 
> Signed-off-by: David Lechner <david@...hnology.com>

Thanks, queued.

-- Sebastian

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