| # 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>; |
| }; |
| }; |
| ... |
