linux-kernel - Re: fixed-regulator with enable from another regulator

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Message-ID: <Y9UgENl4KZT5e/ot@sirena.org.uk>
Date:   Sat, 28 Jan 2023 13:16:00 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Francesco Dolcini <francesco@...cini.it>
Cc:     linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>
Subject: Re: fixed-regulator with enable from another regulator

On Fri, Jan 27, 2023 at 10:33:14PM +0100, Francesco Dolcini wrote:

> I am trying to figure out if it is possible with the current
> regulator-fixed or with any other solution already implemented in Linux
> to have a regulator enabled from another one.

Not really.  You can model the regulators as sharing the same
enable if there's a GPIO enable for the parent regulator,
otherwise it'd need some framework work.

> I am still not 100% sure if describing this specific hardware connection
> would be required on my system, maybe I can just ignore all of that.

It seems like a fairly strange hardware design TBH.

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