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

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Message-ID: <17a9dd9f-d744-4f87-a732-3f4eaf8cadbf@kernel.org>
Date: Fri, 16 Jan 2026 17:06:08 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: "Miclaus, Antoniu" <Antoniu.Miclaus@...log.com>,
 Johan Hovold <johan@...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

On 16/01/2026 16:26, Miclaus, Antoniu wrote:
> 
> 
> --
> Antoniu Miclăuş
> 
>> -----Original Message-----
>> From: Krzysztof Kozlowski <krzk@...nel.org>
>> Sent: Friday, January 16, 2026 12:32 PM
>> To: Miclaus, Antoniu <Antoniu.Miclaus@...log.com>; Johan Hovold
>> <johan@...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; linux-kernel@...r.kernel.org
>> 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@...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.
>>
>> 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@...ntia.se>
> Rob Herring <robh@...nel.org>
> Krzysztof Kozlowski <krzk+dt@...nel.org>
> Conor Dooley <conor+dt@...nel.org>
> Antoniu Miclaus <antoniu.miclaus@...log.com>
> Srinivas Kandagatla <srini@...nel.org>
> Bartosz Golaszewski <brgl@...nel.org>

Exactly. So why did you send it to:
Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
and
Linus Walleij <linus.walleij@...aro.org>

I mean, this is the third time I am asking but you keep deflecting the
question with some sort of other data...
Best regards,
Krzysztof