Il 20/07/22 16:48, Mattijs Korpershoek ha scritto:
MediaTek keypad has 2 modes of detecting key events:
- single key: each (row, column) can detect one key
- double key: each (row, column) is a group of 2 keys
Currently, only single key detection is supported (by default)
Add an optional property, mediatek,double-keys to support double
key detection.
Double key support exists to minimize cost, since it reduces the number
of pins required for physical keys.
Signed-off-by: Mattijs Korpershoek <mkorpershoek@xxxxxxxxxxxx>
diff --git a/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
index ca8ae40a73f7..03c9555849e5 100644
--- a/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
+++ b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml
@@ -49,6 +49,12 @@ properties:
maximum: 256
default: 16
+ mediatek,double-keys:
+ description: |
+ use double key matrix instead of single key
+ when set, each (row,column) is a group that can detect 2 keys
We can make it shorter and (imo) easier to understand, like:
mediatek,double-keys:
description: Each (row, column) group has two keys
...also because, if we say that the group "can detect" two keys, it may be
creating a misunderstandment such as "if I press one key, it gives me two
different input events for two different keys.", which is something that
wouldn't make a lot of sense, would it? :-)
+ type: boolean
+
required:
- compatible
- reg
