linux-kernel - [PATCH v2 1/2] dt-bindings: i2c-mux-gpmux: Add property for settle time

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Date:   Thu, 28 Oct 2021 14:53:40 +0200
From:   Horatiu Vultur <horatiu.vultur@...rochip.com>
To:     <peda@...ntia.se>, <robh+dt@...nel.org>,
        <linux-i2c@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     Horatiu Vultur <horatiu.vultur@...rochip.com>
Subject: [PATCH v2 1/2] dt-bindings: i2c-mux-gpmux: Add property for settle time

Some HW requires some time for the signals to settle after the muxing is
changed. Allow this time to be specified in device tree.

Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com>
---
 Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml
index 9b0603a72f40..4fef5aad360b 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml
@@ -67,6 +67,11 @@ properties:
       The properties of mux-locked and parent-locked multiplexers are discussed
       in more detail in Documentation/i2c/i2c-topology.rst.
 
+  settle-time-us:
+    default: 0
+    description:
+      The time required for the signals to settle.
+
 required:
   - compatible
   - i2c-parent
-- 
2.33.0