Matrix_keypad with high capacity need a longer settle time after enable
all columns.
Add optional property to specify the settle time
Signed-off-by: Markus Burri <markus.burri@xxxxxx>
Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
---
.../devicetree/bindings/input/gpio-matrix-keypad.yaml | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
index 0555c1e..408474e 100644
--- a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
+++ b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
@@ -57,6 +57,12 @@ properties:
before we can scan keypad after activating column gpio.
default: 0
+ all-cols-on-delay-us:
+ description:
+ Delay, measured in microseconds, that is needed
+ after activating all column gpios.
+ default: 0
+
drive-inactive-cols:
type: boolean
description:
--
2.39.5
