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

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Message-ID:
 <CY4PR03MB3399D140FF51521F67AEF8599B8DA@CY4PR03MB3399.namprd03.prod.outlook.com>
Date: Fri, 16 Jan 2026 09:39:06 +0000
From: "Miclaus, Antoniu" <Antoniu.Miclaus@...log.com>
To: Johan Hovold <johan@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>
CC: 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"
	<devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v3 0/4] mux: gpio-mux: add enable GPIO support and ADG2404

> -----Original Message-----
> From: Johan Hovold <johan@...nel.org>
> Sent: Friday, January 16, 2026 11:01 AM
> To: Krzysztof Kozlowski <krzk@...nel.org>
> Cc: Miclaus, Antoniu <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
> 
> [External]
> 
> 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.
>
 
Yes, I've used "--to-cmd='./scripts/get_maintainer.pl --norolestats" when sending the patches.

> Johan