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From: Mark Brown <>
To: Andreas Kemnade <>
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: <> (raw)
In-Reply-To: <>

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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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  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 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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