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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/mediatek,mt6779-keypad.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Mediatek's Keypad Controller
maintainers:
- Mattijs Korpershoek <mkorpershoek@baylibre.com>
allOf:
- $ref: "/schemas/input/matrix-keymap.yaml#"
description: |
Mediatek's Keypad controller is used to interface a SoC with a matrix-type
keypad device. The keypad controller supports multiple row and column lines.
A key can be placed at each intersection of a unique row and a unique column.
The keypad controller can sense a key-press and key-release and report the
event using a interrupt to the cpu.
properties:
compatible:
oneOf:
- const: mediatek,mt6779-keypad
- items:
- enum:
- mediatek,mt6873-keypad
- const: mediatek,mt6779-keypad
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 1
clock-names:
items:
- const: kpd
wakeup-source:
description: use any event on keypad as wakeup event
type: boolean
debounce-delay-ms:
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
- interrupts
- clocks
- clock-names
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
soc {
#address-cells = <2>;
#size-cells = <2>;
keyboard@10010000 {
compatible = "mediatek,mt6779-keypad";
reg = <0 0x10010000 0 0x1000>;
interrupts = <GIC_SPI 75 IRQ_TYPE_EDGE_FALLING>;
clocks = <&clk26m>;
clock-names = "kpd";
};
};
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