tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0-only
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/input/hid-over-i2c.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: HID over I2C Devices
8
9maintainers:
10 - Benjamin Tissoires <benjamin.tissoires@redhat.com>
11 - Jiri Kosina <jkosina@suse.cz>
12
13description: |+
14 HID over I2C provides support for various Human Interface Devices over the
15 I2C bus. These devices can be for example touchpads, keyboards, touch screens
16 or sensors.
17
18 The specification has been written by Microsoft and is currently available here:
19 https://msdn.microsoft.com/en-us/library/windows/hardware/hh852380.aspx
20
21 If this binding is used, the kernel module i2c-hid will handle the communication
22 with the device and the generic hid core layer will handle the protocol.
23
24allOf:
25 - $ref: /schemas/input/touchscreen/touchscreen.yaml#
26
27properties:
28 compatible:
29 oneOf:
30 - items:
31 - enum:
32 - wacom,w9013
33 - const: hid-over-i2c
34 - description: Just "hid-over-i2c" alone is allowed, but not recommended.
35 const: hid-over-i2c
36
37 reg:
38 maxItems: 1
39
40 interrupts:
41 maxItems: 1
42
43 hid-descr-addr:
44 description: HID descriptor address
45 $ref: /schemas/types.yaml#/definitions/uint32
46
47 post-power-on-delay-ms:
48 description: Time required by the device after enabling its regulators
49 or powering it on, before it is ready for communication.
50
51 touchscreen-inverted-x: true
52
53 touchscreen-inverted-y: true
54
55 vdd-supply:
56 description: 3.3V supply
57
58 vddl-supply:
59 description: 1.8V supply
60
61 wakeup-source: true
62
63required:
64 - compatible
65 - reg
66 - interrupts
67
68additionalProperties: false
69
70examples:
71 - |
72 i2c {
73 #address-cells = <1>;
74 #size-cells = <0>;
75
76 hid@2c {
77 compatible = "hid-over-i2c";
78 reg = <0x2c>;
79 hid-descr-addr = <0x0020>;
80 interrupts = <3 2>;
81 };
82 };
83...