From: Francesco Dolcini <francesco@dolcini.it>
To: linux-kernel@vger.kernel.org, Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>
Subject: fixed-regulator with enable from another regulator
Date: Fri, 27 Jan 2023 22:33:14 +0100 [thread overview]
Message-ID: <Y9RDGnZLg6wGJWwn@francesco-nb.int.toradex.com> (raw)
Hello all,
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.
I am not talking about the regulator vin-supply, I am really talking
about the enable input signal of a LDO connected to the output of another
regulator, a sort of "chained" regulator.
As an example something like this
<reg_1v8>[out] ---> [vin-supply]<reg_1v0>[out] --->
<reg_3v3>[out] ---> [enable]
<reg_1v8>[out] ---> [vin-supply]<reg_1v2>[out] --->
<reg_3v3>[out] ---> [enable]
<gpio1> ---> [enable]<reg_3v3>[out]--->
in which toggling <gpio1> control 3 different outputs.
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.
Any thought?
Francesco
next reply other threads:[~2023-01-27 21:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-27 21:33 Francesco Dolcini [this message]
2023-01-28 13:16 ` fixed-regulator with enable from another regulator Mark Brown
2023-01-28 13:43 ` Francesco Dolcini
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=Y9RDGnZLg6wGJWwn@francesco-nb.int.toradex.com \
--to=francesco@dolcini.it \
--cc=broonie@kernel.org \
--cc=lgirdwood@gmail.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).