xref: /openbmc/linux/Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml (revision 2ca376ef)

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/touchscreen.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Common touchscreen

maintainers:
  - Dmitry Torokhov <dmitry.torokhov@gmail.com>

properties:
  panel:
    description: If this touchscreen is integrally connected to a panel, this
      is a reference to that panel. The presence of this reference indicates
      that the touchscreen should be power sequenced together with the panel
      and that they may share power and/or reset signals.
    $ref: /schemas/types.yaml#/definitions/phandle

  touchscreen-min-x:
    description: minimum x coordinate reported
    $ref: /schemas/types.yaml#/definitions/uint32
    default: 0

  touchscreen-min-y:
    description: minimum y coordinate reported
    $ref: /schemas/types.yaml#/definitions/uint32
    default: 0

  touchscreen-size-x:
    description: horizontal resolution of touchscreen (maximum x coordinate reported + 1)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-size-y:
    description: vertical resolution of touchscreen (maximum y coordinate reported + 1)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-max-pressure:
    description: maximum reported pressure (arbitrary range dependent on the controller)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-min-pressure:
    description: minimum pressure on the touchscreen to be achieved in order
      for the touchscreen driver to report a touch event.
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-fuzz-x:
    description: horizontal noise value of the absolute input device (in pixels)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-fuzz-y:
    description: vertical noise value of the absolute input device (in pixels)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-fuzz-pressure:
    description: pressure noise value of the absolute input device (arbitrary
      range dependent on the controller)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-average-samples:
    description: Number of data samples which are averaged for each read (valid
      values dependent on the controller)
    $ref: /schemas/types.yaml#/definitions/uint32

  touchscreen-inverted-x:
    description: X axis is inverted
    type: boolean

  touchscreen-inverted-y:
    description: Y axis is inverted
    type: boolean

  touchscreen-swapped-x-y:
    description: X and Y axis are swapped
                 Swapping is done after inverting the axis
    type: boolean

  touchscreen-x-mm:
    description: horizontal length in mm of the touchscreen

  touchscreen-y-mm:
    description: vertical length in mm of the touchscreen

  touchscreen-x-plate-ohms:
    description: Resistance of the X-plate in Ohms

  touchscreen-y-plate-ohms:
    description: Resistance of the Y-plate in Ohms

dependencies:
  touchscreen-size-x: [ touchscreen-size-y ]
  touchscreen-size-y: [ touchscreen-size-x ]
  touchscreen-x-mm: [ touchscreen-y-mm ]
  touchscreen-y-mm: [ touchscreen-x-mm ]

additionalProperties: true