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| author | Markus Burri <markus.burri@mt.com> | 2025-02-25 20:55:34 +0300 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2025-02-25 22:22:00 +0300 |
| commit | 2eeac6d4bb5ea1063dd634c490c89bb04cb79265 (patch) | |
| tree | 02194f3923761179030c735556448c2d59f494aa | |
| parent | e51cb50f0bc0724634369e42a826dd302aae787c (diff) | |
| download | linux-2eeac6d4bb5ea1063dd634c490c89bb04cb79265.tar.xz | |
dt-bindings: input: matrix_keypad: add settle time after enabling all columns
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>
| -rw-r--r-- | Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml index 0f348b9b7bad..4a5893edf323 100644 --- a/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml +++ b/Documentation/devicetree/bindings/input/gpio-matrix-keypad.yaml @@ -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: |