RE: [PATCH v3 0/4] mux: gpio-mux: add enable GPIO support and ADG2404
From: Miclaus, Antoniu
Date: Fri Jan 16 2026 - 10:26:16 EST
--
Antoniu Miclăuş
> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> Sent: Friday, January 16, 2026 12:32 PM
> To: Miclaus, Antoniu <Antoniu.Miclaus@xxxxxxxxxx>; Johan Hovold
> <johan@xxxxxxxxxx>
> Cc: Peter Rosin <peda@xxxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; Krzysztof
> Kozlowski <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>;
> Srinivas Kandagatla <srini@xxxxxxxxxx>; Johan Hovold
> <johan+linaro@xxxxxxxxxx>; David Lechner <dlechner@xxxxxxxxxxxx>;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v3 0/4] mux: gpio-mux: add enable GPIO support and
> ADG2404
>
> [External]
>
> On 16/01/2026 10:39, Miclaus, Antoniu wrote:
> >> -----Original Message-----
> >> From: Johan Hovold <johan@xxxxxxxxxx>
> >> Sent: Friday, January 16, 2026 11:01 AM
> >> To: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
> >> Cc: Miclaus, Antoniu <Antoniu.Miclaus@xxxxxxxxxx>; Peter Rosin
> >> <peda@xxxxxxxxxx>; Rob Herring <robh@xxxxxxxxxx>; Krzysztof Kozlowski
> >> <krzk+dt@xxxxxxxxxx>; Conor Dooley <conor+dt@xxxxxxxxxx>; Srinivas
> >> Kandagatla <srini@xxxxxxxxxx>; Johan Hovold <johan+linaro@xxxxxxxxxx>;
> >> David Lechner <dlechner@xxxxxxxxxxxx>; devicetree@xxxxxxxxxxxxxxx;
> linux-
> >> kernel@xxxxxxxxxxxxxxx
> >> 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@xxxxxxxxxx" -
> >>> 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@xxxxxxxxxx> (maintainer:MULTIPLEXER
> >> SUBSYSTEM)
> >> Srinivas Kandagatla <srini@xxxxxxxxxx>
> >> (commit_signer:1/2=50%,authored:1/2=50%,added_lines:5/6=83%)
> >> Krzysztof Kozlowski <krzk@xxxxxxxxxx> (commit_signer:1/2=50%)
> >> Bartosz Golaszewski <brgl@xxxxxxxxxx> (commit_signer:1/2=50%)
> >> David Lechner <dlechner@xxxxxxxxxxxx>
> >>
> (commit_signer:1/2=50%,authored:1/2=50%,added_lines:1/6=17%,removed
> >> _lines:3/3=100%)
> >> Johan Hovold <johan+linaro@xxxxxxxxxx> (commit_signer:1/2=50%)
> >> linux-kernel@xxxxxxxxxxxxxxx (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.
>
> Then how did you get non-working Bartosz and Linus' emails?
I am on torvalds/linux latest master branch now. Here is the output of ./scripts/get_maintainer.pl --norolestats:
Peter Rosin <peda@xxxxxxxxxx>
Rob Herring <robh@xxxxxxxxxx>
Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Conor Dooley <conor+dt@xxxxxxxxxx>
Antoniu Miclaus <antoniu.miclaus@xxxxxxxxxx>
Srinivas Kandagatla <srini@xxxxxxxxxx>
Bartosz Golaszewski <brgl@xxxxxxxxxx>
David Lechner <dlechner@xxxxxxxxxxxx>
devicetree@xxxxxxxxxxxxxxx
linux-kernel@xxxxxxxxxxxxxxx
Regards,
>
> Best regards,
> Krzysztof