From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 75C4333A03F; Fri, 16 Jan 2026 16:04:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768579475; cv=none; b=mTCNqZbRsAEf9V4Ao1doT73e0jvi4lMdn41LL5bSg14LB8xL+88Y/9Wvaf/Vda/TRX6uVRVkBo9FaagOjUG66GlpZD/zIa7QlSdLeRo4SEH5ON4wFpnIgn7/tlEd2kc2tbPCIxKAuUmpMSoCBomnYGU+8zB2olyTcYFP4LS7wjc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768579475; c=relaxed/simple; bh=ttcLGoy6Pppi8jgSrT1nrrQBOZdRJct+QTPqLSs7aZE=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=Ujhbg1OiF71lovL1pCgRLai37Lm43aeWZEw4jOp4dcrO2Vy+w8rEsA1ydBmpEdB3Tgl6qKqNgTM1mCZRWOaf9ohzMkOHRtCV3ZUppfw+8Ct+BQQakDF8f+e92JjFF+2RR0FYwyvaMGDfmTS9liDo0aq42FNNVJXXRNRGLSoKS4Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hVAzZ7pp; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="hVAzZ7pp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DD988C116C6; Fri, 16 Jan 2026 16:04:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768579475; bh=ttcLGoy6Pppi8jgSrT1nrrQBOZdRJct+QTPqLSs7aZE=; h=Date:Subject:To:References:From:In-Reply-To:From; b=hVAzZ7ppDsycKD9sHJN/9YxvsA6LIMwTDUhBpDZzJilUScNa1XkriDYWarNtPs46P Dcr1AufWh8Vc/qASLh2UBz9ANSIKf7WRXhyXEc6Ter/znpKaLiYwbN+SghijXS+UIZ UpoaG0FsbxEEJTkmdovrBEo3q53/RKwLE/9TXX1Ds6FAFUYAdnzx5QzhAm++PKzMNk Mk4+uw/SDAE1D8A4CkR5nzQmu3/AH6LkgZgHBvSF0UVXSe97Ny80Ip5AYE1R4mzDVc 3B+OzQ660mC/zW31ImKiJQUpHG1L97OazgJwx3ZO3g0J+hdgvulyvLgsE0ttYI5PDd i2qVll86a3Eww== Message-ID: Date: Fri, 16 Jan 2026 17:04:31 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 1/2] dt-bindings: mux: gpio-mux: add enable-gpios support To: Antoniu Miclaus , Peter Rosin , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Srinivas Kandagatla , Bartosz Golaszewski , David Lechner , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260116152621.75205-1-antoniu.miclaus@analog.com> <20260116152621.75205-2-antoniu.miclaus@analog.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 16/01/2026 16:26, Antoniu Miclaus wrote: > Add support for an optional enable GPIO that allows the multiplexer > to be disabled before changing address lines and re-enabled after, > preventing glitches during channel transitions. > > This is useful for devices like the Analog Devices ADG2404 (4:1 mux) > that benefit from enable control to ensure clean channel switching. > > Signed-off-by: Antoniu Miclaus > --- > Changes in v4: > * Add ADG2404 to binding description for discoverability > * Add dedicated ADG2404 example showing enable-gpios usage > * Update commit message to reference ADG2404 as use case > > --- > .../devicetree/bindings/mux/gpio-mux.yaml | 25 +++++++++++++++++++ > 1 file changed, 25 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mux/gpio-mux.yaml b/Documentation/devicetree/bindings/mux/gpio-mux.yaml > index ef7e33ec85d4..2d9f32012127 100644 > --- a/Documentation/devicetree/bindings/mux/gpio-mux.yaml > +++ b/Documentation/devicetree/bindings/mux/gpio-mux.yaml > @@ -17,6 +17,9 @@ description: |+ > multiplexer GPIO pins, where the first pin is the least significant > bit. An active pin is a binary 1, an inactive pin is a binary 0. > > + This binding supports GPIO-controlled multiplexers such as the Analog > + Devices ADG2404 (4:1 mux with enable control). > + > properties: > compatible: > const: gpio-mux > @@ -25,6 +28,13 @@ properties: > description: > List of gpios used to control the multiplexer, least significant bit first. > > + enable-gpios: > + description: > + Optional GPIO to enable the multiplexer. When present, the mux will be > + disabled before changing address lines and re-enabled after to prevent > + glitches. Required for MUX_IDLE_DISCONNECT idle-state. > + maxItems: 1 > + > mux-supply: > description: > Regulator to power on the multiplexer. > @@ -100,4 +110,19 @@ examples: > }; > }; > }; > + > + - | > + /* Analog Devices ADG2404 4:1 multiplexer with enable control */ > + #include > + > + mux-controller { I did not ask for this. I asked for upstreamed DTS. DTS is a format and a file - see arch/*/boot/dts/. When I say - upstream DTS - it means you should make your or any board using this hardware accepted by respective maintainer. We do not add new examples per every new property, so just add enable-gpios into existing example. Best regards, Krzysztof