84 lines
1.9 KiB
YAML
84 lines
1.9 KiB
YAML
|
# SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
%YAML 1.2
|
||
|
|
---
|
||
|
|
$id: http://devicetree.org/schemas/input/hid-over-i2c.yaml#
|
||
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||
|
|
|
||
|
|
title: HID over I2C Devices
|
||
|
|
|
||
|
|
maintainers:
|
||
|
|
- Benjamin Tissoires <benjamin.tissoires@redhat.com>
|
||
|
|
- Jiri Kosina <jkosina@suse.cz>
|
||
|
|
|
||
|
|
description: |+
|
||
|
|
HID over I2C provides support for various Human Interface Devices over the
|
||
|
|
I2C bus. These devices can be for example touchpads, keyboards, touch screens
|
||
|
|
or sensors.
|
||
|
|
|
||
|
|
The specification has been written by Microsoft and is currently available here:
|
||
|
|
https://msdn.microsoft.com/en-us/library/windows/hardware/hh852380.aspx
|
||
|
|
|
||
|
|
If this binding is used, the kernel module i2c-hid will handle the communication
|
||
|
|
with the device and the generic hid core layer will handle the protocol.
|
||
|
|
|
||
|
|
allOf:
|
||
|
|
- $ref: /schemas/input/touchscreen/touchscreen.yaml#
|
||
|
|
|
||
|
|
properties:
|
||
|
|
compatible:
|
||
|
|
oneOf:
|
||
|
|
- items:
|
||
|
|
- enum:
|
||
|
|
- wacom,w9013
|
||
|
|
- const: hid-over-i2c
|
||
|
|
- description: Just "hid-over-i2c" alone is allowed, but not recommended.
|
||
|
|
const: hid-over-i2c
|
||
|
|
|
||
|
|
reg:
|
||
|
|
maxItems: 1
|
||
|
|
|
||
|
|
interrupts:
|
||
|
|
maxItems: 1
|
||
|
|
|
||
|
|
hid-descr-addr:
|
||
|
|
description: HID descriptor address
|
||
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
||
|
|
|
||
|
|
post-power-on-delay-ms:
|
||
|
|
description: Time required by the device after enabling its regulators
|
||
|
|
or powering it on, before it is ready for communication.
|
||
|
|
|
||
|
|
touchscreen-inverted-x: true
|
||
|
|
|
||
|
|
touchscreen-inverted-y: true
|
||
|
|
|
||
|
|
vdd-supply:
|
||
|
|
description: 3.3V supply
|
||
|
|
|
||
|
|
vddl-supply:
|
||
|
|
description: 1.8V supply
|
||
|
|
|
||
|
|
wakeup-source: true
|
||
|
|
|
||
|
|
required:
|
||
|
|
- compatible
|
||
|
|
- reg
|
||
|
|
- interrupts
|
||
|
|
|
||
|
|
additionalProperties: false
|
||
|
|
|
||
|
|
examples:
|
||
|
|
- |
|
||
|
|
i2c {
|
||
|
|
#address-cells = <1>;
|
||
|
|
#size-cells = <0>;
|
||
|
|
|
||
|
|
hid@2c {
|
||
|
|
compatible = "hid-over-i2c";
|
||
|
|
reg = <0x2c>;
|
||
|
|
hid-descr-addr = <0x0020>;
|
||
|
|
interrupts = <3 2>;
|
||
|
|
};
|
||
|
|
};
|
||
|
|
...
|