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

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Message-ID: <20260115121943.23715-2-antoniu.miclaus@analog.com>
Date: Thu, 15 Jan 2026 14:18:19 +0200
From: Antoniu Miclaus <antoniu.miclaus@...log.com>
To: 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>,
        David Lechner <dlechner@...libre.com>,
        Bartosz
 Golaszewski <bartosz.golaszewski@...aro.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 1/4] dt-bindings: mux: gpio-mux: add enable-gpios support

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.
+    maxItems: 1
+
   mux-supply:
     description:
       Regulator to power on the multiplexer.
-- 
2.43.0