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charset="utf-8" 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 --- .../devicetree/bindings/input/gpio-matrix-keypad.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yam= l b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml index 9ea66b3..0ce89a6 100644 --- a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml +++ b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml @@ -66,6 +66,12 @@ properties: before we can scan keypad after activating column gpio. default: 0 =20 + 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: | --=20 2.39.5