| Message ID | 20220720-mt8183-keypad-v2-3-6d42c357cb76@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Input: mt6779-keypad - double keys support | expand |
On 26/07/2022 14:56, Mattijs Korpershoek wrote: > The 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 > > With double key, two keys are physically wired to one (row, column) pin. > These keys are in the same "group". > > Multiple keys in the same group reduces the number of pins which > minimizes cost. > > Add a keys-per-group property to describe this. > > Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml b/Documentation/devicetree/bindings/input/mediatek,mt6779-keypad.yaml index ca8ae40a73f7..387d0448ff77 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,keys-per-group: + description: each (row, column) group has multiple keys + $ref: /schemas/types.yaml#/definitions/uint32 + default: 1 + maximum: 2 + required: - compatible - reg
The 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 With double key, two keys are physically wired to one (row, column) pin. These keys are in the same "group". Multiple keys in the same group reduces the number of pins which minimizes cost. Add a keys-per-group property to describe this. Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>