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dt-bindings: input: matrix_keypad: add settle time after enabling all columns

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Matrix keypads with high capacity need a longer settle time after
enabling all columns. Add an optional property to specify the settle
time.

Signed-off-by: Markus Burri <markus.burri@mt.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Reviewed-by: Manuel Traut <manuel.traut@mt.com>
Link: https://lore.kernel.org/r/20250110054906.354296-6-markus.burri@mt.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Markus Burri 2025-02-25 09:55:34 -08:00 committed by Dmitry Torokhov
parent e51cb50f0b
commit 2eeac6d4bb
1 changed files with 6 additions and 0 deletions
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6
Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml
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@ -51,6 +51,12 @@ 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: