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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/fsl,imx25-tcq.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Freescale mx25 TS conversion queue module
maintainers:
- Frank Li <Frank.Li@nxp.com>
description:
mx25 touchscreen conversion queue module which controls the ADC unit of the
mx25 for attached touchscreens.
properties:
compatible:
const: fsl,imx25-tcq
reg:
maxItems: 1
interrupts:
maxItems: 1
fsl,wires:
description: touch wires number.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [4, 5]
fsl,pen-debounce-ns:
description:
Pen debounce time in nanoseconds.
fsl,pen-threshold:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Pen-down threshold for the touchscreen. This is a value
between 1 and 4096. It is the ratio between the internal reference voltage
and the measured voltage after the plate was precharged. Resistance between
plates and therefore the voltage decreases with pressure so that a smaller
value is equivalent to a higher pressure.
fsl,settling-time-ns:
description:
Settling time in nanoseconds. The settling time is before
the actual touch detection to wait for an even charge distribution in the
plate.
allOf:
- $ref: touchscreen.yaml
required:
- compatible
- reg
- interrupts
- fsl,wires
unevaluatedProperties: false
examples:
- |
touchscreen@50030400 {
compatible = "fsl,imx25-tcq";
reg = <0x50030400 0x60>;
interrupt-parent = <&tscadc>;
interrupts = <0>;
fsl,wires = <4>;
};
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