blob: cffd02028d02a2a1b054193462d33af9906efa8c [file] [log] [blame]
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/allwinner,sun4i-a10-lradc-keys.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Allwinner A10 LRADC Device Tree Bindings
maintainers:
- Chen-Yu Tsai <wens@csie.org>
- Maxime Ripard <mripard@kernel.org>
properties:
compatible:
oneOf:
- const: allwinner,sun4i-a10-lradc-keys
- const: allwinner,sun8i-a83t-r-lradc
- items:
- const: allwinner,sun50i-a64-lradc
- const: allwinner,sun8i-a83t-r-lradc
reg:
maxItems: 1
interrupts:
maxItems: 1
vref-supply:
description:
Regulator for the LRADC reference voltage
patternProperties:
"^button-[0-9]+$":
type: object
properties:
label:
$ref: /schemas/types.yaml#/definitions/string
description: Descriptive name of the key
linux,code:
$ref: /schemas/types.yaml#/definitions/uint32
description: Keycode to emit
channel:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: ADC Channel this key is attached to
voltage:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Voltage in microvolts at LRADC input when this key is
pressed
required:
- label
- linux,code
- channel
- voltage
additionalProperties: false
required:
- compatible
- reg
- interrupts
- vref-supply
additionalProperties: false
examples:
- |
lradc: lradc@1c22800 {
compatible = "allwinner,sun4i-a10-lradc-keys";
reg = <0x01c22800 0x100>;
interrupts = <31>;
vref-supply = <&reg_vcc3v0>;
button-191 {
label = "Volume Up";
linux,code = <115>;
channel = <0>;
voltage = <191274>;
};
button-392 {
label = "Volume Down";
linux,code = <114>;
channel = <0>;
voltage = <392644>;
};
};
...