Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml
Extension
.yaml
Size
2952 bytes
Lines
112
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/fsl,imx6ul-tsc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Freescale i.MX6UL Touch Controller

maintainers:
  - Haibo Chen <haibo.chen@nxp.com>
  - Shawn Guo <shawnguo@kernel.org>
  - Sascha Hauer <s.hauer@pengutronix.de>

properties:
  compatible:
    const: fsl,imx6ul-tsc

  reg:
    items:
      - description: touch controller address
      - description: ADC2 address

  interrupts:
    items:
      - description: touch controller address
      - description: ADC2 address

  clocks:
    maxItems: 2

  clock-names:
    items:
      - const: tsc
      - const: adc

  xnur-gpios:
    maxItems: 1
    description:
      The X- gpio this controller connect to. This xnur-gpio returns to
      low once the finger leave the touch screen (The last touch event
      the touch controller capture).

  measure-delay-time:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      The value of measure delay time. Before X-axis or Y-axis measurement,
      the screen need some time before even potential distribution ready.
    default: 0xffff
    minimum: 0
    maximum: 0xffffff

  pre-charge-time:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      The touch screen need some time to precharge.
    default: 0xfff
    minimum: 0
    maximum: 0xffffffff

  touchscreen-average-samples:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: Number of data samples which are averaged for each read.
    enum: [ 1, 4, 8, 16, 32 ]

  debounce-delay-us:
    description: |
      Minimum duration in microseconds a signal must remain stable
      to be considered valid.

      Drivers must convert this value to IPG clock cycles and map

Annotation

Implementation Notes