Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/input/mediatek,mt6779-keypad.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Mediatek's Keypad Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Mattijs Korpershoek <mkorpershoek@baylibre.com> |
| 11 | |
| 12 | allOf: |
| 13 | - $ref: /schemas/input/matrix-keymap.yaml# |
| 14 | |
| 15 | description: | |
| 16 | Mediatek's Keypad controller is used to interface a SoC with a matrix-type |
| 17 | keypad device. The keypad controller supports multiple row and column lines. |
| 18 | A key can be placed at each intersection of a unique row and a unique column. |
| 19 | The keypad controller can sense a key-press and key-release and report the |
| 20 | event using a interrupt to the cpu. |
| 21 | |
| 22 | properties: |
| 23 | compatible: |
| 24 | oneOf: |
| 25 | - const: mediatek,mt6779-keypad |
| 26 | - items: |
| 27 | - enum: |
| 28 | - mediatek,mt6873-keypad |
| 29 | - const: mediatek,mt6779-keypad |
| 30 | |
| 31 | reg: |
| 32 | maxItems: 1 |
| 33 | |
| 34 | interrupts: |
| 35 | maxItems: 1 |
| 36 | |
| 37 | clocks: |
| 38 | maxItems: 1 |
| 39 | |
| 40 | clock-names: |
| 41 | items: |
| 42 | - const: kpd |
| 43 | |
| 44 | wakeup-source: |
| 45 | description: use any event on keypad as wakeup event |
| 46 | type: boolean |
| 47 | |
| 48 | debounce-delay-ms: |
| 49 | maximum: 256 |
| 50 | default: 16 |
| 51 | |
| 52 | mediatek,keys-per-group: |
| 53 | description: each (row, column) group has multiple keys |
| 54 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 55 | default: 1 |
| 56 | maximum: 2 |
| 57 | |
| 58 | required: |
| 59 | - compatible |
| 60 | - reg |
| 61 | - interrupts |
| 62 | - clocks |
| 63 | - clock-names |
| 64 | |
| 65 | unevaluatedProperties: false |
| 66 | |
| 67 | examples: |
| 68 | - | |
| 69 | #include <dt-bindings/input/input.h> |
| 70 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 71 | |
| 72 | soc { |
| 73 | #address-cells = <2>; |
| 74 | #size-cells = <2>; |
| 75 | |
| 76 | keyboard@10010000 { |
| 77 | compatible = "mediatek,mt6779-keypad"; |
| 78 | reg = <0 0x10010000 0 0x1000>; |
| 79 | interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>; |
| 80 | clocks = <&clk26m>; |
| 81 | clock-names = "kpd"; |
| 82 | }; |
| 83 | }; |