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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,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 ]
required:
- compatible
- reg
- interrupts
- clocks
- clock-names
- xnur-gpios
allOf:
- $ref: touchscreen.yaml#
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/clock/imx6ul-clock.h>
#include <dt-bindings/gpio/gpio.h>
touchscreen@2040000 {
compatible = "fsl,imx6ul-tsc";
reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks IMX6UL_CLK_IPG>,
<&clks IMX6UL_CLK_ADC2>;
clock-names = "tsc", "adc";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_tsc>;
xnur-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
measure-delay-time = <0xfff>;
pre-charge-time = <0xffff>;
touchscreen-average-samples = <32>;
};
|
