From: Mark Brown <broonie@kernel.org>
To: Andreas Kemnade <andreas@kemnade.info>
Cc: hns@goldelico.com, j.neuschaefer@gmx.net, contact@paulk.fr,
GNUtoo@cyberdimension.org, josua.mayer@jm0.eu,
lgirdwood@gmail.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RFC] regulator: core: fix handling negative voltages e.g. in EPD PMICs
Date: Mon, 24 Feb 2020 12:05:12 +0000 [thread overview]
Message-ID: <20200224120512.GG6215@sirena.org.uk> (raw)
In-Reply-To: <20200223153502.15306-1-andreas@kemnade.info>
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On Sun, Feb 23, 2020 at 04:35:01PM +0100, Andreas Kemnade wrote:
> An alternative would be to handle voltages as absolute values.
> There are probably no regulators with support both negative
> and positive output.
This is what'd be needed, your approach here is a bit of a hack and
leaves some values unrepresentable if they overlap with errnos which
obviously has issues if someone has a need for those values. Ground is
to a large extent somewhat arbatrary anyway and some systems do just
redefine it as part of their normal operation (eg, VMID based audio
systems) so this wouldn't be a huge departure.
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next prev parent reply other threads:[~2020-02-24 12:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-23 15:35 [PATCH RFC] regulator: core: fix handling negative voltages e.g. in EPD PMICs Andreas Kemnade
2020-02-24 12:05 ` Mark Brown [this message]
2020-02-24 12:22 ` H. Nikolaus Schaller
2020-02-24 12:31 ` Mark Brown
2020-02-24 18:46 ` Andreas Kemnade
2020-02-24 15:21 ` Denis 'GNUtoo' Carikli
2020-02-24 17:00 ` Mark Brown
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