From: Rob Herring <robh@kernel.org>
To: Peter Rosin <peda@axentia.se>
Cc: Bastien Curutchet <bastien.curutchet@bootlin.com>,
Andi Shyti <andi.shyti@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Peter Korsgaard <peter.korsgaard@barco.com>,
Wolfram Sang <wsa@kernel.org>,
linux-i2c@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
Herve Codina <herve.codina@bootlin.com>,
Christopher Cordahi <christophercordahi@nanometrics.ca>
Subject: Re: [PATCH v2 1/3] dt-bindings: i2c: gpio: Add 'transition-delay-us' property
Date: Mon, 3 Jun 2024 10:58:10 -0500 [thread overview]
Message-ID: <20240603155810.GA509311-robh@kernel.org> (raw)
In-Reply-To: <718d86a7-d70a-c38a-089d-5276bcc6e88b@axentia.se>
On Wed, May 29, 2024 at 02:13:37PM +0200, Peter Rosin wrote:
> Hi!
>
> 2024-05-29 at 11:17, Bastien Curutchet wrote:
> > I2C MUXes described by the i2c-gpio-mux sometimes need a significant
> > amount of time to switch from a bus to another. When a new bus is
> > selected, the first I2C transfer can fail if it occurs too early. There
> > is no way to describe this transition delay that has to be waited before
> > starting the first I2C transfer.
> >
> > Add a 'transition-delay-us' property that indicates the delay to be
> > respected before doing the first i2c transfer.
>
> The io-channel-mux has a property with very similar intent named
> settle-time-us [1]. I think we should use the same name here.
>
> [1] Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.yaml
Agreed. I knew we had something and went looking... I only checked the
base mux and i2c mux bindings.
Rob
next prev parent reply other threads:[~2024-06-03 15:58 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-29 9:17 [PATCH v2 0/3] i2c: mux: gpio: Add 'transition-delay-us' property Bastien Curutchet
2024-05-29 9:17 ` [PATCH v2 1/3] dt-bindings: i2c: " Bastien Curutchet
2024-05-29 12:13 ` Peter Rosin
2024-06-03 15:58 ` Rob Herring [this message]
2024-06-05 12:32 ` Bastien Curutchet
2024-05-29 9:17 ` [PATCH v2 2/3] i2c: mux: gpio: Re-order #include to match alphabetic order Bastien Curutchet
2024-05-29 9:17 ` [PATCH v2 3/3] i2c: mux: gpio: Add support for the 'transition-delay-us' property Bastien Curutchet
2024-05-29 12:16 ` Peter Rosin
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=20240603155810.GA509311-robh@kernel.org \
--to=robh@kernel.org \
--cc=andi.shyti@kernel.org \
--cc=bastien.curutchet@bootlin.com \
--cc=christophercordahi@nanometrics.ca \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=herve.codina@bootlin.com \
--cc=krzk+dt@kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peda@axentia.se \
--cc=peter.korsgaard@barco.com \
--cc=thomas.petazzoni@bootlin.com \
--cc=wsa@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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.