linux-kernel - Re: [PATCH v3 1/4] dt-bindings: mux: gpio-mux: add enable-gpios support

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Message-ID: <20260116-tiny-awesome-numbat-cabc97@quoll>
Date: Fri, 16 Jan 2026 09:30:56 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Antoniu Miclaus <antoniu.miclaus@...log.com>
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>, David Lechner <dlechner@...libre.com>, 
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] dt-bindings: mux: gpio-mux: add enable-gpios
 support

On Thu, Jan 15, 2026 at 02:18:19PM +0200, Antoniu Miclaus wrote:
> Add support for an optional enable GPIO that allows the multiplexer
> to be disabled.
> 
> Signed-off-by: Antoniu Miclaus <antoniu.miclaus@...log.com>
> ---
> changes in v3:
>  * new patch - extend gpio-mux instead of standalone driver approach
> ---
>  Documentation/devicetree/bindings/mux/gpio-mux.yaml | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mux/gpio-mux.yaml b/Documentation/devicetree/bindings/mux/gpio-mux.yaml
> index ef7e33ec85d4..199792d42323 100644
> --- a/Documentation/devicetree/bindings/mux/gpio-mux.yaml
> +++ b/Documentation/devicetree/bindings/mux/gpio-mux.yaml
> @@ -25,6 +25,13 @@ 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.

Where is any DTS user of such gpio-mux with enable-gpios?

Best regards,
Krzysztof