linux-kernel - Re: [PATCH v3 0/4] mux: gpio-mux: add enable GPIO support and ADG2404

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Message-ID: <aWn-R7O_wZkpC1NC@hovoldconsulting.com>
Date: Fri, 16 Jan 2026 10:00:55 +0100
From: Johan Hovold <johan@...nel.org>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Antoniu Miclaus <antoniu.miclaus@...log.com>,
	Peter Rosin <peda@...ntia.se>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Srinivas Kandagatla <srini@...nel.org>,
	Johan Hovold <johan+linaro@...nel.org>,
	David Lechner <dlechner@...libre.com>, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/4] mux: gpio-mux: add enable GPIO support and ADG2404

On Fri, Jan 16, 2026 at 09:37:36AM +0100, Krzysztof Kozlowski wrote:
> On Thu, Jan 15, 2026 at 02:18:18PM +0200, Antoniu Miclaus wrote:
> > This series extends the gpio-mux driver with optional enable GPIO support
> > to prevent glitches during channel transitions, then adds support for the
> > Analog Devices ADG2404 multiplexer as the first user of this feature.
> > 
> > The enable GPIO allows the multiplexer to be disabled before changing
> > address lines and re-enabled after, preventing brief activation of
> > unintended channels during transitions. This is particularly important
> > for precision analog applications.
> > 
> > The ADG2404 is a 4:1 analog multiplexer with low 0.62Ω on-resistance
> > that requires this enable GPIO functionality for glitch-free operation.
> > 
> > Changes in v3:
> >  * Extend gpio-mux driver instead of creating standalone adg2404 driver
> >  * Make enable GPIO optional for backward compatibility
> >  * Add MUX_IDLE_DISCONNECT support via enable GPIO
> 
> You are developing on some old kernel. You got stale Cc list of at least
> three people! How could you for example get "johan+linaro@...nel.org" -
> from which maintainer entry - but that at least is not bouncing like two
> others.

Probably from using get_maintainer.pl --git:

	$ scripts/get_maintainer.pl --git drivers/mux/gpio.c 
	Peter Rosin <peda@...ntia.se> (maintainer:MULTIPLEXER SUBSYSTEM)
	Srinivas Kandagatla <srini@...nel.org> (commit_signer:1/2=50%,authored:1/2=50%,added_lines:5/6=83%)
	Krzysztof Kozlowski <krzk@...nel.org> (commit_signer:1/2=50%)
	Bartosz Golaszewski <brgl@...nel.org> (commit_signer:1/2=50%)
	David Lechner <dlechner@...libre.com> (commit_signer:1/2=50%,authored:1/2=50%,added_lines:1/6=17%,removed_lines:3/3=100%)
	Johan Hovold <johan+linaro@...nel.org> (commit_signer:1/2=50%)
	linux-kernel@...r.kernel.org (open list)
	MULTIPLEXER SUBSYSTEM status: Odd Fixes

A recent mailmap is indeed needed to remap Bartosz's old address,
though.

Johan