linux-kernel - [PATCH 1/2] dt-bindings: mux: gpio-mux: Add property for settle time

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Date:   Mon, 4 Oct 2021 17:36:39 +0200
From:   Vincent Whitchurch <vincent.whitchurch@...s.com>
To:     <peda@...ntia.se>, <devicetree@...r.kernel.org>
CC:     <kernel@...s.com>, <robh+dt@...nel.org>,
        <linux-kernel@...r.kernel.org>,
        Vincent Whitchurch <vincent.whitchurch@...s.com>
Subject: [PATCH 1/2] dt-bindings: mux: gpio-mux: Add property for settle time

Hardware may require some time for the muxed analog signals to settle
after the muxing is changed.  Allow this time to be specified in the
devicetree.

Signed-off-by: Vincent Whitchurch <vincent.whitchurch@...s.com>
---
 Documentation/devicetree/bindings/mux/gpio-mux.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/mux/gpio-mux.yaml b/Documentation/devicetree/bindings/mux/gpio-mux.yaml
index 0a7c8d64981a..7cffa0711f02 100644
--- a/Documentation/devicetree/bindings/mux/gpio-mux.yaml
+++ b/Documentation/devicetree/bindings/mux/gpio-mux.yaml
@@ -31,6 +31,11 @@ properties:
   idle-state:
     default: -1
 
+  settle-time-us:
+    default: 0
+    description:
+      Time required for analog signals to settle after muxing.
+
 required:
   - compatible
   - mux-gpios
-- 
2.28.0