linux-kernel - Re: [PATCHv1 03/19] power: supply: core: add manufacture date properties

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Message-ID: <20200515151408.vbj75fag6ya5g2bq@earth.universe>
Date:   Fri, 15 May 2020 17:14:08 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Emil Velikov <emil.velikov@...labora.com>
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com
Subject: Re: [PATCHv1 03/19] power: supply: core: add manufacture date
 properties

Hi,

On Fri, May 15, 2020 at 03:47:32PM +0100, Emil Velikov wrote:
> On 2020/05/13, Sebastian Reichel wrote:
> > Some smart batteries store their manufacture date, which is
> > useful to identify the battery and/or to know about the cell
> > quality.
> > 
> Have you considered exposing this as a single file? Say following
> the ISO8601 format - YYYY-MM-DD.

Yes. My initial implementation was exactly that. The thing is, that
I suspect some fuel gauge implementations may only expose the year
or just year + month. I chose 3 files, since receiving 'YYYY-MM'
instead of full ISO code might be more unexpected than not having
the DAY file available. But I don't have a strong opinion on this.

-- Sebastian

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