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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/cirrus,ep9307-keypad.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cirrus ep93xx keypad
maintainers:
- Alexander Sverdlin <alexander.sverdlin@gmail.com>
allOf:
- $ref: /schemas/input/matrix-keymap.yaml#
description:
The KPP is designed to interface with a keypad matrix with 2-point contact
or 3-point contact keys. The KPP is designed to simplify the software task
of scanning a keypad matrix. The KPP is capable of detecting, debouncing,
and decoding one or multiple keys pressed simultaneously on a keypad.
properties:
compatible:
oneOf:
- const: cirrus,ep9307-keypad
- items:
- enum:
- cirrus,ep9312-keypad
- cirrus,ep9315-keypad
- const: cirrus,ep9307-keypad
reg:
maxItems: 1
interrupts:
maxItems: 1
clocks:
maxItems: 1
debounce-delay-ms:
description: |
Time in microseconds that key must be pressed or
released for state change interrupt to trigger.
cirrus,prescale:
description: row/column counter pre-scaler load value
$ref: /schemas/types.yaml#/definitions/uint16
maximum: 1023
required:
- compatible
- reg
- interrupts
- clocks
- linux,keymap
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/input/input.h>
#include <dt-bindings/clock/cirrus,ep9301-syscon.h>
keypad@800f0000 {
compatible = "cirrus,ep9307-keypad";
reg = <0x800f0000 0x0c>;
interrupt-parent = <&vic0>;
interrupts = <29>;
clocks = <&eclk EP93XX_CLK_KEYPAD>;
pinctrl-names = "default";
pinctrl-0 = <&keypad_default_pins>;
linux,keymap = <KEY_UP>,
<KEY_DOWN>,
<KEY_VOLUMEDOWN>,
<KEY_HOME>,
<KEY_RIGHT>,
<KEY_LEFT>,
<KEY_ENTER>,
<KEY_VOLUMEUP>,
<KEY_F6>,
<KEY_F8>,
<KEY_F9>,
<KEY_F10>,
<KEY_F1>,
<KEY_F2>,
<KEY_F3>,
<KEY_POWER>;
};
|
