linux-kernel - [PATCH 1/2] dt-bindings: i2c-mux-gpio: Add optional DT property

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Date:   Wed, 13 Oct 2021 16:10:02 +0200
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     <peda@...ntia.se>, <robh+dt@...nel.org>,
        <peter.korsgaard@...co.com>, <lars.povlsen@...rochip.com>,
        <linux-i2c@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH 1/2] dt-bindings: i2c-mux-gpio: Add optional DT property

Add optional property 'select-delay' DT property. In case this is set
then a delay is added when changing mux state. The value is specified in
usec.

Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
 Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt
index d4cf10582a26..d0dacbad491a 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpio.txt
@@ -28,6 +28,7 @@ Required properties:
 Optional properties:
 - idle-state: value to set the muxer to when idle. When no value is
   given, it defaults to the last value used.
+- select-delay: GPIO settle delay when changing mux state. In usec.
 
 For each i2c child node, an I2C child bus will be created. They will
 be numbered based on their order in the device tree.
-- 
2.33.0