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... 84