linux-kernel - [PATCH v3 1/2] dt-bindings: google,cros-ec-keyb: add has-fn-map prop

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Message-ID: <20251231143538.37483-2-fabiobaltieri@chromium.org>
Date: Wed, 31 Dec 2025 14:35:37 +0000
From: Fabio Baltieri <fabiobaltieri@...omium.org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Benson Leung <bleung@...omium.org>,
	Guenter Roeck <groeck@...omium.org>
Cc: Fabio Baltieri <fabiobaltieri@...omium.org>,
	Tzung-Bi Shih <tzungbi@...nel.org>,
	Simon Glass <sjg@...omium.org>,
	linux-input@...r.kernel.org,
	devicetree@...r.kernel.org,
	chrome-platform@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/2] dt-bindings: google,cros-ec-keyb: add has-fn-map prop

Add binding documentation for the has-fn-map property.

Signed-off-by: Fabio Baltieri <fabiobaltieri@...omium.org>
---
 .../devicetree/bindings/input/google,cros-ec-keyb.yaml    | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml b/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
index fefaaf46a240..fa24b1cbc788 100644
--- a/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
+++ b/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
@@ -44,6 +44,14 @@ properties:
       where the lower 16 bits are reserved. This property is specified only
       when the keyboard has a custom design for the top row keys.
 
+  google,has-fn-map:
+    description: |
+      The keymap has function key layer. This allows defining an extra set of
+      codes that are sent if a key is pressed while the KEY_FN is held pressed
+      as well. The function codes have to be defined in the linux,keymap
+      property with an offset of keypad,num-rows from the normal ones.
+    type: boolean
+
 dependencies:
   function-row-physmap: [ 'linux,keymap' ]
   google,needs-ghost-filter: [ 'linux,keymap' ]
-- 
2.52.0.351.gbe84eed79e-goog