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2026-09-06 12:53:21 -06:00
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linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/adi,ad7879.yaml
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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/adi,ad7879.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Analog Devices AD7879(-1)/AD7889(-1) touchscreen interface (SPI/I2C)
maintainers:
- Frank Li <Frank.Li@nxp.com>
properties:
compatible:
description: |
for SPI slave, use "adi,ad7879"
for I2C slave, use "adi,ad7879-1"
enum:
- adi,ad7879
- adi,ad7879-1
reg:
maxItems: 1
interrupts:
maxItems: 1
touchscreen-max-pressure:
$ref: /schemas/types.yaml#/definitions/uint32
description: maximum reported pressure
adi,resistance-plate-x:
$ref: /schemas/types.yaml#/definitions/uint32
description: total resistance of X-plate (for pressure calculation)
touchscreen-swapped-x-y:
$ref: /schemas/types.yaml#/definitions/flag
description: X and Y axis are swapped (boolean)
adi,first-conversion-delay:
$ref: /schemas/types.yaml#/definitions/uint8
default: 0
minimum: 0
maximum: 15
description: |
0-12: In 128us steps (starting with 128us)
13 : 2.560ms
14 : 3.584ms
15 : 4.096ms
This property has to be a '/bits/ 8' value
adi,acquisition-time:
$ref: /schemas/types.yaml#/definitions/uint8
default: 0
enum: [0, 1, 2, 3]
description: |
0: 2us
1: 4us
2: 8us
3: 16us
This property has to be a '/bits/ 8' value
adi,median-filter-size:
$ref: /schemas/types.yaml#/definitions/uint8
default: 0
enum: [0, 1, 2, 3]
description: |
0: disabled
1: 4 measurements
2: 8 measurements
3: 16 measurements
This property has to be a '/bits/ 8' value
adi,averaging:
$ref: /schemas/types.yaml#/definitions/uint8
default: 0
enum: [0, 1, 2, 3]
description: |
0: 2 middle values (1 if median disabled)
1: 4 middle values
2: 8 middle values
3: 16 values
This property has to be a '/bits/ 8' value
adi,conversion-interval:
$ref: /schemas/types.yaml#/definitions/uint8
default: 0
description: |
0 : convert one time only
1-255: 515us + val * 35us (up to 9.440ms)
This property has to be a '/bits/ 8' value
gpio-controller: true
"#gpio-cells":
const: 1
required:
- compatible
- reg
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen0@2c {
compatible = "adi,ad7879-1";
reg = <0x2c>;
interrupt-parent = <&gpio1>;
interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
touchscreen-max-pressure = <4096>;
adi,resistance-plate-x = <120>;
adi,first-conversion-delay = /bits/ 8 <3>;
adi,acquisition-time = /bits/ 8 <1>;
adi,median-filter-size = /bits/ 8 <2>;
adi,averaging = /bits/ 8 <1>;
adi,conversion-interval = /bits/ 8 <255>;
};
};
- |
#include <dt-bindings/interrupt-controller/irq.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
touchscreen1@1 {
compatible = "adi,ad7879";
reg = <1>;
spi-max-frequency = <5000000>;
gpio-controller;
#gpio-cells = <1>;
interrupt-parent = <&gpio1>;
interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
touchscreen-max-pressure = <4096>;
adi,resistance-plate-x = <120>;
adi,first-conversion-delay = /bits/ 8 <3>;
adi,acquisition-time = /bits/ 8 <1>;
adi,median-filter-size = /bits/ 8 <2>;
adi,averaging = /bits/ 8 <1>;
adi,conversion-interval = /bits/ 8 <255>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/apple,z2-multitouch.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/apple,z2-multitouch.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Apple touchscreens attached using the Z2 protocol
maintainers:
- Sasha Finkelstein <k@chaosmail.tech>
description: A series of touschscreen controllers used in Apple products
allOf:
- $ref: touchscreen.yaml#
- $ref: /schemas/spi/spi-peripheral-props.yaml#
properties:
compatible:
enum:
- apple,j293-touchbar
- apple,j493-touchbar
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
firmware-name:
maxItems: 1
apple,z2-cal-blob:
$ref: /schemas/types.yaml#/definitions/uint8-array
maxItems: 4096
description:
Calibration blob supplied by the bootloader
required:
- compatible
- interrupts
- reset-gpios
- firmware-name
- touchscreen-size-x
- touchscreen-size-y
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@0 {
compatible = "apple,j293-touchbar";
reg = <0>;
spi-max-frequency = <11500000>;
reset-gpios = <&pinctrl_ap 139 GPIO_ACTIVE_LOW>;
interrupts-extended = <&pinctrl_ap 194 IRQ_TYPE_EDGE_FALLING>;
firmware-name = "apple/dfrmtfw-j293.bin";
touchscreen-size-x = <23045>;
touchscreen-size-y = <640>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/auo_pixcir_ts.txt
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* AUO in-cell touchscreen controller using Pixcir sensors
Required properties:
- compatible: must be "auo,auo_pixcir_ts"
- reg: I2C address of the chip
- interrupts: interrupt to which the chip is connected
- gpios: gpios the chip is connected to
first one is the interrupt gpio and second one the reset gpio
- x-size: horizontal resolution of touchscreen
- y-size: vertical resolution of touchscreen
Example:
i2c@00000000 {
/* ... */
auo_pixcir_ts@5c {
compatible = "auo,auo_pixcir_ts";
reg = <0x5c>;
interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
gpios = <&gpf 2 0 GPIO_LEVEL_HIGH>, /* INT */
<&gpf 5 1 GPIO_LEVEL_LOW>; /* RST */
x-size = <800>;
y-size = <600>;
};
/* ... */
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/azoteq,iqs7211.yaml
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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/azoteq,iqs7211.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Azoteq IQS7210A/7211A/E Trackpad/Touchscreen Controller
maintainers:
- Jeff LaBundy <jeff@labundy.com>
description: |
The Azoteq IQS7210A, IQS7211A and IQS7211E trackpad and touchscreen control-
lers employ projected-capacitance sensing and can track two contacts.
Link to datasheets: https://www.azoteq.com/
properties:
compatible:
enum:
- azoteq,iqs7210a
- azoteq,iqs7211a
- azoteq,iqs7211e
reg:
maxItems: 1
irq-gpios:
maxItems: 1
description:
Specifies the GPIO connected to the device's active-low RDY output. The
pin doubles as the IQS7211E's active-low MCLR input, in which case this
GPIO must be configured as open-drain.
reset-gpios:
maxItems: 1
description:
Specifies the GPIO connected to the device's active-low MCLR input. The
device is temporarily held in hardware reset prior to initialization if
this property is present.
azoteq,forced-comms:
type: boolean
description:
Enables forced communication; to be used with host adapters that cannot
tolerate clock stretching.
azoteq,forced-comms-default:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description:
Indicates if the device's OTP memory enables (1) or disables (0) forced
communication by default. Specifying this property can expedite startup
time if the default value is known.
If this property is not specified, communication is not initiated until
the device asserts its RDY pin shortly after exiting hardware reset. At
that point, forced communication is either enabled or disabled based on
the presence or absence of the 'azoteq,forced-comms' property.
azoteq,rate-active-ms:
minimum: 0
maximum: 65535
description: Specifies the report rate (in ms) during active mode.
azoteq,rate-touch-ms:
minimum: 0
maximum: 65535
description: Specifies the report rate (in ms) during idle-touch mode.
azoteq,rate-idle-ms:
minimum: 0
maximum: 65535
description: Specifies the report rate (in ms) during idle mode.
azoteq,rate-lp1-ms:
minimum: 0
maximum: 65535
description: Specifies the report rate (in ms) during low-power mode 1.
azoteq,rate-lp2-ms:
minimum: 0
maximum: 65535
description: Specifies the report rate (in ms) during low-power mode 2.
azoteq,timeout-active-ms:
multipleOf: 1000
minimum: 0
maximum: 65535000
description:
Specifies the length of time (in ms) to wait for an event before moving
from active mode to idle or idle-touch modes.
azoteq,timeout-touch-ms:
multipleOf: 1000
minimum: 0
maximum: 65535000
description:
Specifies the length of time (in ms) to wait for an event before moving
from idle-touch mode to idle mode.
azoteq,timeout-idle-ms:
multipleOf: 1000
minimum: 0
maximum: 65535000
description:
Specifies the length of time (in ms) to wait for an event before moving
from idle mode to low-power mode 1.
azoteq,timeout-lp1-ms:
multipleOf: 1000
minimum: 0
maximum: 65535000
description:
Specifies the length of time (in ms) to wait for an event before moving
from low-power mode 1 to low-power mode 2.
azoteq,timeout-lp2-ms:
multipleOf: 1000
minimum: 0
maximum: 60000
description:
Specifies the rate (in ms) at which the trackpad reference values
are updated during low-power modes 1 and 2.
azoteq,timeout-ati-ms:
multipleOf: 1000
minimum: 0
maximum: 60000
description:
Specifies the delay (in ms) before the automatic tuning implementation
(ATI) is retried in the event it fails to complete.
azoteq,timeout-comms-ms:
minimum: 0
maximum: 65535
description:
Specifies the delay (in ms) before a communication window is closed.
azoteq,timeout-press-ms:
multipleOf: 1000
minimum: 0
maximum: 60000
description:
Specifies the length of time (in ms) to wait before automatically
releasing a press event. Specify zero to allow the press state to
persist indefinitely.
azoteq,fosc-freq:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
Specifies the device's core clock frequency as follows:
0: 14 MHz
1: 18 MHz
azoteq,fosc-trim:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description: Specifies the device's core clock frequency trim.
azoteq,num-contacts:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 2
default: 0
description: Specifies the number of contacts reported by the device.
azoteq,contact-split:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the contact (finger) split factor.
azoteq,trim-x:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the horizontal trim width.
azoteq,trim-y:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the vertical trim height.
trackpad:
type: object
description: Represents all channels associated with the trackpad.
properties:
azoteq,rx-enable:
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 1
maxItems: 8
items:
minimum: 0
maximum: 7
description:
Specifies the order of the CRx pin(s) associated with the trackpad.
azoteq,tx-enable:
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 1
maxItems: 12
items:
minimum: 0
maximum: 11
description:
Specifies the order of the CTx pin(s) associated with the trackpad.
azoteq,channel-select:
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 1
maxItems: 36
items:
minimum: 0
maximum: 255
description: |
Specifies the channels mapped to each cycle in the following order:
Cycle 0, slot 0
Cycle 0, slot 1
Cycle 1, slot 0
Cycle 1, slot 1
...and so on. Specify 255 to disable a given slot.
azoteq,ati-frac-div-fine:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the trackpad's ATI fine fractional divider.
azoteq,ati-frac-mult-coarse:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description: Specifies the trackpad's ATI coarse fractional multiplier.
azoteq,ati-frac-div-coarse:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the trackpad's ATI coarse fractional divider.
azoteq,ati-comp-div:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the trackpad's ATI compensation divider.
azoteq,ati-target:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description: Specifies the trackpad's ATI target.
azoteq,touch-enter:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the trackpad's touch entrance factor.
azoteq,touch-exit:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the trackpad's touch exit factor.
azoteq,thresh:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the trackpad's stationary touch threshold.
azoteq,conv-period:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the trackpad's conversion period.
azoteq,conv-frac:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the trackpad's conversion frequency fraction.
patternProperties:
"^event-(tap(-double|-triple)?|hold|palm|swipe-(x|y)-(pos|neg)(-hold)?)$":
type: object
$ref: ../input.yaml#
description:
Represents a gesture event reported by the trackpad. In the case of
axial gestures, the duration or distance specified in one direction
applies to both directions along the same axis.
properties:
linux,code: true
azoteq,gesture-max-ms:
minimum: 0
maximum: 65535
description: Specifies the maximum duration of tap/swipe gestures.
azoteq,gesture-mid-ms:
minimum: 0
maximum: 65535
description:
Specifies the maximum duration between subsequent tap gestures
(IQS7211E only).
azoteq,gesture-min-ms:
minimum: 0
maximum: 65535
description: Specifies the minimum duration of hold gestures.
azoteq,gesture-dist:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description:
Specifies the minimum (swipe) or maximum (tap and hold) distance
a finger may travel to be considered a gesture.
azoteq,gesture-dist-rep:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description:
Specifies the minimum distance a finger must travel to elicit a
repeated swipe gesture (IQS7211E only).
azoteq,gesture-angle:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 75
description:
Specifies the maximum angle (in degrees) a finger may travel to
be considered a swipe gesture.
azoteq,thresh:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 42
description: Specifies the palm gesture threshold (IQS7211E only).
additionalProperties: false
dependencies:
azoteq,rx-enable: ["azoteq,tx-enable"]
azoteq,tx-enable: ["azoteq,rx-enable"]
azoteq,channel-select: ["azoteq,rx-enable"]
additionalProperties: false
alp:
type: object
$ref: ../input.yaml#
description: Represents the alternate low-power channel (ALP).
properties:
azoteq,rx-enable:
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 1
maxItems: 8
items:
minimum: 0
maximum: 7
description:
Specifies the CRx pin(s) associated with the ALP in no particular
order.
azoteq,tx-enable:
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 1
maxItems: 12
items:
minimum: 0
maximum: 11
description:
Specifies the CTx pin(s) associated with the ALP in no particular
order.
azoteq,ati-frac-div-fine:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the ALP's ATI fine fractional divider.
azoteq,ati-frac-mult-coarse:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description: Specifies the ALP's ATI coarse fractional multiplier.
azoteq,ati-frac-div-coarse:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the ALP's ATI coarse fractional divider.
azoteq,ati-comp-div:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the ALP's ATI compensation divider.
azoteq,ati-target:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description: Specifies the ALP's ATI target.
azoteq,ati-base:
$ref: /schemas/types.yaml#/definitions/uint32
multipleOf: 8
minimum: 0
maximum: 255
description: Specifies the ALP's ATI base.
azoteq,ati-mode:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
Specifies the ALP's ATI mode as follows:
0: Partial
1: Full
azoteq,sense-mode:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
Specifies the ALP's sensing mode as follows:
0: Self capacitive
1: Mutual capacitive
azoteq,debounce-enter:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the ALP's debounce entrance factor.
azoteq,debounce-exit:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the ALP's debounce exit factor.
azoteq,thresh:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description: Specifies the ALP's proximity or touch threshold.
azoteq,conv-period:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the ALP's conversion period.
azoteq,conv-frac:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the ALP's conversion frequency fraction.
linux,code: true
additionalProperties: false
button:
type: object
description: Represents the inductive or capacitive button.
properties:
azoteq,ati-frac-div-fine:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the button's ATI fine fractional divider.
azoteq,ati-frac-mult-coarse:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description: Specifies the button's ATI coarse fractional multiplier.
azoteq,ati-frac-div-coarse:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the button's ATI coarse fractional divider.
azoteq,ati-comp-div:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
description: Specifies the button's ATI compensation divider.
azoteq,ati-target:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description: Specifies the button's ATI target.
azoteq,ati-base:
$ref: /schemas/types.yaml#/definitions/uint32
multipleOf: 8
minimum: 0
maximum: 255
description: Specifies the button's ATI base.
azoteq,ati-mode:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
description: |
Specifies the button's ATI mode as follows:
0: Partial
1: Full
azoteq,sense-mode:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2]
description: |
Specifies the button's sensing mode as follows:
0: Self capacitive
1: Mutual capacitive
2: Inductive
azoteq,touch-enter:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the button's touch entrance factor.
azoteq,touch-exit:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the button's touch exit factor.
azoteq,debounce-enter:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the button's debounce entrance factor.
azoteq,debounce-exit:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the button's debounce exit factor.
azoteq,thresh:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 65535
description: Specifies the button's proximity threshold.
azoteq,conv-period:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the button's conversion period.
azoteq,conv-frac:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
description: Specifies the button's conversion frequency fraction.
patternProperties:
"^event-(prox|touch)$":
type: object
$ref: ../input.yaml#
description:
Represents a proximity or touch event reported by the button.
properties:
linux,code: true
additionalProperties: false
additionalProperties: false
wakeup-source: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-swapped-x-y: true
dependencies:
touchscreen-size-x: ["azoteq,num-contacts"]
touchscreen-size-y: ["azoteq,num-contacts"]
touchscreen-inverted-x: ["azoteq,num-contacts"]
touchscreen-inverted-y: ["azoteq,num-contacts"]
touchscreen-swapped-x-y: ["azoteq,num-contacts"]
required:
- compatible
- reg
- irq-gpios
additionalProperties: false
allOf:
- $ref: touchscreen.yaml#
- if:
properties:
compatible:
contains:
const: azoteq,iqs7210a
then:
properties:
alp:
properties:
azoteq,rx-enable:
maxItems: 4
items:
minimum: 4
else:
properties:
azoteq,timeout-press-ms: false
alp:
properties:
azoteq,ati-mode: false
button: false
- if:
properties:
compatible:
contains:
const: azoteq,iqs7211e
then:
properties:
reset-gpios: false
trackpad:
properties:
azoteq,tx-enable:
maxItems: 13
items:
maximum: 12
alp:
properties:
azoteq,tx-enable:
maxItems: 13
items:
maximum: 12
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@56 {
compatible = "azoteq,iqs7210a";
reg = <0x56>;
irq-gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
reset-gpios = <&gpio 17 (GPIO_ACTIVE_LOW |
GPIO_PUSH_PULL)>;
azoteq,num-contacts = <2>;
trackpad {
azoteq,rx-enable = <6>, <5>, <4>, <3>, <2>;
azoteq,tx-enable = <1>, <7>, <8>, <9>, <10>;
};
button {
azoteq,sense-mode = <2>;
azoteq,touch-enter = <40>;
azoteq,touch-exit = <36>;
event-touch {
linux,code = <KEY_HOME>;
};
};
alp {
azoteq,sense-mode = <1>;
linux,code = <KEY_POWER>;
};
};
};
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@56 {
compatible = "azoteq,iqs7211e";
reg = <0x56>;
irq-gpios = <&gpio 4 (GPIO_ACTIVE_LOW |
GPIO_OPEN_DRAIN)>;
trackpad {
event-tap {
linux,code = <KEY_PLAYPAUSE>;
};
event-tap-double {
linux,code = <KEY_SHUFFLE>;
};
event-tap-triple {
linux,code = <KEY_AGAIN>;
};
event-hold {
linux,code = <KEY_STOP>;
};
event-palm {
linux,code = <KEY_EXIT>;
};
event-swipe-x-pos {
linux,code = <KEY_REWIND>;
};
event-swipe-x-pos-hold {
linux,code = <KEY_PREVIOUS>;
};
event-swipe-x-neg {
linux,code = <KEY_FASTFORWARD>;
};
event-swipe-x-neg-hold {
linux,code = <KEY_NEXT>;
};
event-swipe-y-pos {
linux,code = <KEY_VOLUMEUP>;
};
event-swipe-y-pos-hold {
linux,code = <KEY_MUTE>;
};
event-swipe-y-neg {
linux,code = <KEY_VOLUMEDOWN>;
};
event-swipe-y-neg-hold {
linux,code = <KEY_MUTE>;
};
};
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/brcm,iproc-touchscreen.txt
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* Broadcom's IPROC Touchscreen Controller
Required properties:
- compatible: must be "brcm,iproc-touchscreen"
- ts_syscon: handler of syscon node defining physical base
address of the controller and length of memory mapped region.
If this property is selected please make sure MFD_SYSCON config
is enabled in the defconfig file.
- clocks: The clock provided by the SOC to driver the tsc
- clock-names: name for the clock
- interrupts: The touchscreen controller's interrupt
- address-cells: Specify the number of u32 entries needed in child nodes.
Should set to 1.
- size-cells: Specify number of u32 entries needed to specify child nodes size
in reg property. Should set to 1.
Optional properties:
- scanning_period: Time between scans. Each step is 1024 us. Valid 1-256.
- debounce_timeout: Each step is 512 us. Valid 0-255
- settling_timeout: The settling duration (in ms) is the amount of time
the tsc waits to allow the voltage to settle after
turning on the drivers in detection mode.
Valid values: 0-11
0 = 0.008 ms
1 = 0.01 ms
2 = 0.02 ms
3 = 0.04 ms
4 = 0.08 ms
5 = 0.16 ms
6 = 0.32 ms
7 = 0.64 ms
8 = 1.28 ms
9 = 2.56 ms
10 = 5.12 ms
11 = 10.24 ms
- touch_timeout: The continuous number of scan periods in which touch is
not detected before the controller returns to idle state.
Valid values 0-255.
- average_data: Number of data samples which are averaged before a final
data point is placed into the FIFO
Valid values 0-7
0 = 1 sample
1 = 2 samples
2 = 4 samples
3 = 8 samples
4 = 16 samples
5 = 32 samples
6 = 64 samples
7 = 128 samples
- fifo_threshold: Interrupt is generated whenever the number of fifo
entries exceeds this value
Valid values 0-31
- touchscreen-size-x: horizontal resolution of touchscreen (in pixels)
- touchscreen-size-y: vertical resolution of touchscreen (in pixels)
- touchscreen-fuzz-x: horizontal noise value of the absolute input
device (in pixels)
- touchscreen-fuzz-y: vertical noise value of the absolute input
device (in pixels)
- touchscreen-inverted-x: X axis is inverted (boolean)
- touchscreen-inverted-y: Y axis is inverted (boolean)
Example: An example of touchscreen node
ts_adc_syscon: ts_adc_syscon@180a6000 {
compatible = "brcm,iproc-ts-adc-syscon","syscon";
reg = <0x180a6000 0xc30>;
};
touchscreen: touchscreen@180a6000 {
compatible = "brcm,iproc-touchscreen";
#address-cells = <1>;
#size-cells = <1>;
ts_syscon = <&ts_adc_syscon>;
clocks = <&adc_clk>;
clock-names = "tsc_clk";
interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
scanning_period = <5>;
debounce_timeout = <40>;
settling_timeout = <7>;
touch_timeout = <10>;
average_data = <5>;
fifo_threshold = <1>;
/* Touchscreen is rotated 180 degrees. */
touchscreen-inverted-x;
touchscreen-inverted-y;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/bu21029.txt
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* Rohm BU21029 Touch Screen Controller
Required properties:
- compatible : must be "rohm,bu21029"
- reg : i2c device address of the chip (0x40 or 0x41)
- interrupt-parent : the phandle for the gpio controller
- interrupts : (gpio) interrupt to which the chip is connected
- rohm,x-plate-ohms : x-plate resistance in Ohm
Optional properties:
- reset-gpios : gpio pin to reset the chip (active low)
- touchscreen-size-x : horizontal resolution of touchscreen (in pixels)
- touchscreen-size-y : vertical resolution of touchscreen (in pixels)
- touchscreen-max-pressure: maximum pressure value
- vdd-supply : power supply for the controller
Example:
&i2c1 {
/* ... */
bu21029: bu21029@40 {
compatible = "rohm,bu21029";
reg = <0x40>;
interrupt-parent = <&gpio1>;
interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
reset-gpios = <&gpio6 16 GPIO_ACTIVE_LOW>;
rohm,x-plate-ohms = <600>;
touchscreen-size-x = <800>;
touchscreen-size-y = <480>;
touchscreen-max-pressure = <4095>;
};
/* ... */
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/chipone,icn8318.yaml
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/chipone,icn8318.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ChipOne ICN8318 Touchscreen Controller
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: chipone,icn8318
reg:
maxItems: 1
interrupts:
maxItems: 1
wake-gpios:
maxItems: 1
unevaluatedProperties: false
required:
- compatible
- reg
- interrupts
- wake-gpios
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@40 {
compatible = "chipone,icn8318";
reg = <0x40>;
interrupt-parent = <&pio>;
interrupts = <9 IRQ_TYPE_EDGE_FALLING>; /* EINT9 (PG9) */
pinctrl-names = "default";
pinctrl-0 = <&ts_wake_pin_p66>;
wake-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>; /* PB3 */
touchscreen-size-x = <800>;
touchscreen-size-y = <480>;
touchscreen-inverted-x;
touchscreen-swapped-x-y;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma140.yaml
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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/cypress,cy8ctma140.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cypress CY8CTMA140 series touchscreen controller
maintainers:
- Linus Walleij <linusw@kernel.org>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: cypress,cy8ctma140
reg:
const: 0x20
clock-frequency:
description: I2C client clock frequency, defined for host
minimum: 100000
maximum: 400000
interrupts:
maxItems: 1
vcpin-supply:
description: Analog power supply regulator on VCPIN pin
vdd-supply:
description: Digital power supply regulator on VDD pin
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
touchscreen-max-pressure: true
additionalProperties: false
required:
- compatible
- reg
- interrupts
- touchscreen-size-x
- touchscreen-size-y
- touchscreen-max-pressure
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@20 {
compatible = "cypress,cy8ctma140";
reg = <0x20>;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
touchscreen-max-pressure = <255>;
interrupt-parent = <&gpio6>;
interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
vdd-supply = <&ab8500_ldo_aux2_reg>;
vcpin-supply = <&ab8500_ldo_aux2_reg>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/cypress,cy8ctma340.yaml
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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/cypress,cy8ctma340.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cypress CY8CTMA340 series touchscreen controller
description: The Cypress CY8CTMA340 series (also known as "CYTTSP" after
the marketing name Cypress TrueTouch Standard Product) touchscreens can
be connected to either I2C or SPI buses.
maintainers:
- Javier Martinez Canillas <javier@dowhile0.org>
- Linus Walleij <linusw@kernel.org>
allOf:
- $ref: touchscreen.yaml#
properties:
$nodename:
pattern: "^touchscreen(@.*)?$"
compatible:
oneOf:
- const: cypress,cy8ctma340
- const: cypress,cy8ctst341
- const: cypress,cyttsp-spi
description: Legacy compatible for SPI connected CY8CTMA340
deprecated: true
- const: cypress,cyttsp-i2c
description: Legacy compatible for I2C connected CY8CTMA340
deprecated: true
reg:
description: I2C address when used on the I2C bus, or the SPI chip
select index when used on the SPI bus
clock-frequency:
description: I2C client clock frequency, defined for host when using
the device on the I2C bus
minimum: 0
maximum: 400000
spi-max-frequency:
description: SPI clock frequency, defined for host, defined when using
the device on the SPI bus. The throughput is maximum 2 Mbps so the
typical value is 2000000, if higher rates are used the total throughput
needs to be restricted to 2 Mbps.
minimum: 0
maximum: 6000000
interrupts:
description: Interrupt to host
maxItems: 1
vcpin-supply:
description: Analog power supply regulator on VCPIN pin
vdd-supply:
description: Digital power supply regulator on VDD pin
reset-gpios:
description: Reset line for the touchscreen, should be tagged
as GPIO_ACTIVE_LOW
bootloader-key:
description: the 8-byte bootloader key that is required to switch
the chip from bootloader mode (default mode) to application mode
$ref: /schemas/types.yaml#/definitions/uint8-array
minItems: 8
maxItems: 8
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
active-distance:
description: the distance in pixels beyond which a touch must move
before movement is detected and reported by the device
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
active-interval-ms:
description: the minimum period in ms between consecutive
scanning/processing cycles when the chip is in active mode
minimum: 0
maximum: 255
lowpower-interval-ms:
description: the minimum period in ms between consecutive
scanning/processing cycles when the chip is in low-power mode
minimum: 0
maximum: 2550
touch-timeout-ms:
description: minimum time in ms spent in the active power state while no
touches are detected before entering low-power mode
minimum: 0
maximum: 2550
use-handshake:
description: enable register-based handshake (boolean). This should only
be used if the chip is configured to use 'blocking communication with
timeout' (in this case the device generates an interrupt at the end of
every scanning/processing cycle)
$ref: /schemas/types.yaml#/definitions/flag
additionalProperties: false
required:
- compatible
- reg
- interrupts
- bootloader-key
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
num-cs = <1>;
cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
touchscreen@0 {
compatible = "cypress,cy8ctma340";
reg = <0>;
interrupt-parent = <&gpio>;
interrupts = <20 IRQ_TYPE_EDGE_FALLING>;
reset-gpios = <&gpio 21 GPIO_ACTIVE_LOW>;
vdd-supply = <&ldo_aux1_reg>;
vcpin-supply = <&ldo_aux2_reg>;
bootloader-key = /bits/ 8 <0x00 0x01 0x02 0x03 0x04 0x05 0x06 0x07>;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
active-interval-ms = <0>;
touch-timeout-ms = <255>;
lowpower-interval-ms = <10>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/cypress,tt21000.yaml
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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/cypress,tt21000.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cypress TT21000 touchscreen controller
description: The Cypress TT21000 series (also known as "CYTTSP5" after
the marketing name Cypress TrueTouch Standard Product series 5).
maintainers:
- Alistair Francis <alistair@alistair23.me>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: cypress,tt21000
reg:
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
interrupts:
maxItems: 1
vdd-supply:
description: Regulator for voltage.
vddio-supply:
description: Optional Regulator for I/O voltage.
reset-gpios:
maxItems: 1
linux,keycodes:
description: EV_ABS specific event code generated by the axis.
wakeup-source: true
patternProperties:
"^button@[0-9]+$":
type: object
$ref: ../input.yaml#
properties:
reg:
maxItems: 1
linux,keycodes:
description: Keycode to emit
required:
- reg
- linux,keycodes
additionalProperties: false
required:
- compatible
- reg
- interrupts
- vdd-supply
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/linux-event-codes.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@24 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "cypress,tt21000";
reg = <0x24>;
pinctrl-names = "default";
pinctrl-0 = <&tp_reset_ds203>;
interrupt-parent = <&pio>;
interrupts = <1 5 IRQ_TYPE_LEVEL_LOW>;
reset-gpios = <&pio 7 1 GPIO_ACTIVE_LOW>;
vdd-supply = <&reg_touch>;
button@0 {
reg = <0>;
linux,keycodes = <KEY_HOMEPAGE>;
};
button@1 {
reg = <1>;
linux,keycodes = <KEY_MENU>;
};
button@2 {
reg = <2>;
linux,keycodes = <KEY_BACK>;
};
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/edt-ft5x06.yaml
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/edt-ft5x06.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: FocalTech EDT-FT5x06 Polytouch
description: |
There are 5 variants of the chip for various touch panel sizes
FT5206GE1 2.8" .. 3.8"
FT5306DE4 4.3" .. 7"
FT5406EE8 7" .. 8.9"
FT5506EEG 7" .. 8.9"
FT5726NEI 5.7” .. 11.6"
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
allOf:
- $ref: touchscreen.yaml#
- if:
properties:
compatible:
contains:
enum:
- evervision,ev-ft5726
then:
properties:
offset-x: true
offset-y: true
properties:
compatible:
oneOf:
- enum:
- edt,edt-ft5206
- edt,edt-ft5306
- edt,edt-ft5406
- edt,edt-ft5506
- evervision,ev-ft5726
- focaltech,ft3518
- focaltech,ft5426
- focaltech,ft5452
- focaltech,ft6236
- focaltech,ft8201
- focaltech,ft8716
- focaltech,ft8719
- items:
- const: focaltech,ft3519
- const: focaltech,ft3518
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
wake-gpios:
maxItems: 1
wakeup-source: true
vcc-supply: true
iovcc-supply: true
gain:
description: Allows setting the sensitivity in the range from 0 to 31.
Note that lower values indicate higher sensitivity.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
offset:
description: Allows setting the edge compensation in the range from 0 to 31.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 31
offset-x:
description: Same as offset, but applies only to the horizontal position.
Range from 0 to 80, only supported by evervision,ev-ft5726 devices.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 80
offset-y:
description: Same as offset, but applies only to the vertical position.
Range from 0 to 80, only supported by evervision,ev-ft5726 devices.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 80
report-rate-hz:
description: |
Allows setting the scan rate in Hertz.
M06 supports range from 30 to 140 Hz.
M12 supports range from 1 to 255 Hz.
minimum: 1
maximum: 255
threshold:
description: Allows setting the "click"-threshold in the range from 0 to 255.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
interrupt-controller: true
unevaluatedProperties: false
required:
- compatible
- reg
- interrupts
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@38 {
compatible = "edt,edt-ft5406";
reg = <0x38>;
interrupt-parent = <&gpio2>;
interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
wake-gpios = <&gpio4 9 GPIO_ACTIVE_HIGH>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/eeti,exc3000.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/eeti,exc3000.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: EETI EXC3000 series touchscreen controller
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
properties:
compatible:
oneOf:
- const: eeti,exc3000
- const: eeti,exc80h60
- const: eeti,exc80h84
- const: eeti,egalax_ts # Do NOT use for new binding
- const: eeti,exc3000-i2c
deprecated: true
- items:
- enum:
- eeti,exc81w32
- const: eeti,exc80h84
reg:
enum: [0x4, 0xa, 0x2a]
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
wakeup-gpios:
maxItems: 1
vdd-supply:
description: Power supply regulator for the chip
attn-gpios:
deprecated: true
maxItems: 1
description: Phandle to a GPIO to check whether interrupt is still
latched. This is necessary for platforms that lack
support for level-triggered IRQs.
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-swapped-x-y: true
required:
- compatible
- reg
- interrupts
additionalProperties: false
allOf:
- $ref: touchscreen.yaml#
- if:
properties:
compatible:
not:
contains:
enum:
- eeti,egalax_ts
- eeti,exc3000-i2c
then:
properties:
reg:
const: 0x2a
wakeup-gpios: false
attn-gpios: false
required:
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include "dt-bindings/interrupt-controller/irq.h"
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@2a {
compatible = "eeti,exc3000";
reg = <0x2a>;
interrupt-parent = <&gpio1>;
interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
touchscreen-size-x = <4096>;
touchscreen-size-y = <4096>;
touchscreen-inverted-x;
touchscreen-swapped-x-y;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/elan,ektf2127.yaml
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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/elan,ektf2127.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Elan eKTF2127 I2C touchscreen controller
maintainers:
- Siebren Vroegindeweij <siebren.vroegindeweij@hotmail.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- elan,ektf2127
- elan,ektf2132
- elan,ektf2232
reg:
maxItems: 1
interrupts:
maxItems: 1
power-gpios:
maxItems: 1
required:
- compatible
- reg
- interrupts
- power-gpios
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@15 {
compatible = "elan,ektf2127";
reg = <0x15>;
interrupt-parent = <&pio>;
interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
touchscreen-inverted-x;
touchscreen-swapped-x-y;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml
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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/elan,elants_i2c.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Elantech I2C Touchscreen
maintainers:
- David Heidelberg <david@ixit.cz>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
oneOf:
- enum:
- elan,ektf3624
- elan,ekth3500
- items:
- const: elan,ekth3915
- const: elan,ekth3500
reg:
maxItems: 1
interrupts:
maxItems: 1
wakeup-source:
type: boolean
description: touchscreen can be used as a wakeup source.
reset-gpios:
maxItems: 1
description: reset gpio the chip is connected to.
vcc33-supply:
description: a phandle for the regulator supplying 3.3V power.
vccio-supply:
description: a phandle for the regulator supplying IO power.
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
additionalProperties: false
required:
- compatible
- reg
- interrupts
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@10 {
compatible = "elan,ekth3500";
reg = <0x10>;
interrupt-parent = <&gpio4>;
interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
wakeup-source;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/fsl,imx25-tcq.yaml
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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>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/fsl,imx6ul-tsc.yaml
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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 ]
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
it to one of the four discrete thresholds exposed by the
TSC_DEBUG_MODE2 register:
0: 8191 IPG cycles
1: 4095 IPG cycles
2: 2047 IPG cycles
3: 1023 IPG cycles
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>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml
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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/goodix,gt9916.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Goodix Berlin series touchscreen controller
description: The Goodix Berlin series of touchscreen controllers
be connected to either I2C or SPI buses.
maintainers:
- Neil Armstrong <neil.armstrong@linaro.org>
allOf:
- $ref: touchscreen.yaml#
- $ref: /schemas/spi/spi-peripheral-props.yaml#
properties:
compatible:
enum:
- goodix,gt9897
- goodix,gt9916
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
avdd-supply:
description: Analog power supply regulator on AVDD pin
vddio-supply:
description: power supply regulator on VDDIO pin
spi-max-frequency: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
additionalProperties: false
required:
- compatible
- reg
- interrupts
- avdd-supply
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@5d {
compatible = "goodix,gt9916";
reg = <0x5d>;
interrupt-parent = <&gpio>;
interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
avdd-supply = <&ts_avdd>;
touchscreen-size-x = <1024>;
touchscreen-size-y = <768>;
};
};
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
num-cs = <1>;
cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>;
touchscreen@0 {
compatible = "goodix,gt9916";
reg = <0>;
interrupt-parent = <&gpio>;
interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
avdd-supply = <&ts_avdd>;
spi-max-frequency = <1000000>;
touchscreen-size-x = <1024>;
touchscreen-size-y = <768>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/goodix.yaml
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/goodix.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Goodix GT9xx series touchscreen controller
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- goodix,gt1151
- goodix,gt1158
- goodix,gt5663
- goodix,gt5688
- goodix,gt911
- goodix,gt9110
- goodix,gt912
- goodix,gt9147
- goodix,gt917s
- goodix,gt927
- goodix,gt9271
- goodix,gt928
- goodix,gt9286
- goodix,gt967
reg:
enum: [ 0x5d, 0x14 ]
interrupts:
maxItems: 1
irq-gpios:
description: GPIO pin used for IRQ input. Additionally, this line is
sampled by the device on reset deassertion to select the I2C client
address, thus it can be driven by the host during the reset sequence.
maxItems: 1
panel: true
reset-gpios:
maxItems: 1
AVDD28-supply:
description: Analog power supply regulator on AVDD28 pin
VDDIO-supply:
description: GPIO power supply regulator on VDDIO pin
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
additionalProperties: false
required:
- compatible
- reg
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@5d {
compatible = "goodix,gt928";
reg = <0x5d>;
interrupt-parent = <&gpio>;
interrupts = <0 0>;
irq-gpios = <&gpio1 0 0>;
reset-gpios = <&gpio1 1 0>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/hideep.txt
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* HiDeep Finger and Stylus touchscreen controller
Required properties:
- compatible : must be "hideep,hideep-ts"
- reg : I2C slave address, (e.g. 0x6C).
- interrupts : Interrupt to which the chip is connected.
Optional properties:
- vdd-supply : It is the controller supply for controlling
main voltage(3.3V) through the regulator.
- vid-supply : It is the controller supply for controlling
IO voltage(1.8V) through the regulator.
- reset-gpios : Define for reset gpio pin.
It is to use for reset IC.
- touchscreen-size-x : X axis size of touchscreen
- touchscreen-size-y : Y axis size of touchscreen
- linux,keycodes : Specifies an array of numeric keycode values to
be used for reporting button presses. The array can
contain up to 3 entries.
Example:
#include "dt-bindings/input/input.h"
i2c@00000000 {
/* ... */
touchscreen@6c {
compatible = "hideep,hideep-ts";
reg = <0x6c>;
interrupt-parent = <&gpx1>;
interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
vdd-supply = <&ldo15_reg>;
vid-supply = <&ldo18_reg>;
reset-gpios = <&gpx1 5 0>;
touchscreen-size-x = <1080>;
touchscreen-size-y = <1920>;
linux,keycodes = <KEY_HOME>, <KEY_MENU>, <KEY_BACK>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/himax,hx852es.yaml
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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/himax,hx852es.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Himax HX852x(ES) touch panel controller
maintainers:
- Stephan Gerhold <stephan@gerhold.net>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
items:
- enum:
- himax,hx8525e
- himax,hx8526e
- himax,hx8527e
- const: himax,hx852es
reg:
maxItems: 1
interrupts:
maxItems: 1
description: Touch Screen Interrupt (TSIX), active low
reset-gpios:
maxItems: 1
description: External Reset (XRES), active low
vcca-supply:
description: Analog power supply (VCCA)
vccd-supply:
description: Digital power supply (VCCD)
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
linux,keycodes:
minItems: 1
maxItems: 4
required:
- compatible
- reg
- interrupts
- reset-gpios
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@48 {
compatible = "himax,hx8527e", "himax,hx852es";
reg = <0x48>;
interrupt-parent = <&tlmm>;
interrupts = <13 IRQ_TYPE_LEVEL_LOW>;
reset-gpios = <&tlmm 12 GPIO_ACTIVE_LOW>;
vcca-supply = <&reg_ts_vcca>;
vccd-supply = <&pm8916_l6>;
linux,keycodes = <KEY_BACK KEY_HOMEPAGE KEY_APPSELECT>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/hycon,hy46xx.yaml
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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/hycon,hy46xx.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Hycon HY46XX series touchscreen controller
description: |
There are 6 variants of the chip for various touch panel sizes and cover lens material
Glass: 0.3mm--4.0mm
PET/PMMA: 0.2mm--2.0mm
HY4613(B)-N048 < 6"
HY4614(B)-N068 7" .. 10.1"
HY4621-NS32 < 5"
HY4623-NS48 5.1" .. 7"
Glass: 0.3mm--8.0mm
PET/PMMA: 0.2mm--4.0mm
HY4633(B)-N048 < 6"
HY4635(B)-N048 < 7" .. 10.1"
maintainers:
- Giulio Benetti <giulio.benetti@benettiengineering.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- hycon,hy4613
- hycon,hy4614
- hycon,hy4621
- hycon,hy4623
- hycon,hy4633
- hycon,hy4635
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
vcc-supply: true
hycon,threshold:
description: Allows setting the sensitivity in the range from 0 to 255.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 255
hycon,glove-enable:
type: boolean
description: Allows enabling glove setting.
hycon,report-speed-hz:
description: Allows setting the report speed in Hertz.
minimum: 1
maximum: 255
hycon,noise-filter-enable:
type: boolean
description: Allows enabling power noise filter.
hycon,filter-data:
description: Allows setting how many samples throw before reporting touch
in the range from 0 to 5.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 5
hycon,gain:
description: Allows setting the sensitivity distance in the range from 0 to 5.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 5
hycon,edge-offset:
description: Allows setting the edge compensation in the range from 0 to 16.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 16
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-swapped-x-y: true
interrupt-controller: true
additionalProperties: false
required:
- compatible
- reg
- interrupts
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@1c {
compatible = "hycon,hy4633";
reg = <0x1c>;
interrupt-parent = <&gpio2>;
interrupts = <5 IRQ_TYPE_EDGE_FALLING>;
reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/hynitron,cst816x.yaml
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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/hynitron,cst816x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Hynitron CST816x Series Capacitive Touch controller
maintainers:
- Oleh Kuzhylnyi <kuzhylol@gmail.com>
description: |
Bindings for CST816x high performance self-capacitance touch chip series
with single point gesture and real two-point operation.
properties:
compatible:
enum:
- hynitron,cst816s
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
linux,keycodes:
minItems: 1
items:
- description: Slide up gesture
- description: Slide down gesture
- description: Slide left gesture
- description: Slide right gesture
- description: Long press gesture
required:
- compatible
- reg
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/linux-event-codes.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@15 {
compatible = "hynitron,cst816s";
reg = <0x15>;
interrupt-parent = <&gpio0>;
interrupts = <4 IRQ_TYPE_EDGE_RISING>;
reset-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
linux,keycodes = <KEY_UP>, <KEY_DOWN>, <KEY_LEFT>, <KEY_RIGHT>,
<BTN_TOOL_TRIPLETAP>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/ilitek,ili210x.yaml
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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/ilitek,ili210x.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Ilitek ILI21xx/ILI251x V3/V6 touch screen controller with i2c interface
maintainers:
- Frank Li <Frank.Li@nxp.com>
- Marek Vasut <marek.vasut+renesas@mailbox.org>
properties:
compatible:
enum:
- ilitek,ili210x
- ilitek,ili2117
- ilitek,ili2120
- ilitek,ili251x
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
wakeup-source: true
required:
- compatible
- reg
allOf:
- $ref: touchscreen.yaml
unevaluatedProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@41 {
compatible = "ilitek,ili2120";
reg = <0x41>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
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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/imagis,ist3038c.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Imagis IST30XXC family touchscreen controller
maintainers:
- Markuss Broks <markuss.broks@gmail.com>
properties:
$nodename:
pattern: "^touchscreen@[0-9a-f]+$"
compatible:
enum:
- imagis,ist3032c
- imagis,ist3038
- imagis,ist3038b
- imagis,ist3038c
- imagis,ist3038h
reg:
maxItems: 1
interrupts:
maxItems: 1
vdd-supply:
description: Power supply regulator for the chip
vddio-supply:
description: Power supply regulator for the I2C bus
linux,keycodes:
description: Keycodes for the touch keys
minItems: 2
maxItems: 5
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-swapped-x-y: true
additionalProperties: false
allOf:
- $ref: touchscreen.yaml#
- if:
not:
properties:
compatible:
contains:
enum:
- imagis,ist3032c
- imagis,ist3038
then:
properties:
linux,keycodes: false
required:
- compatible
- reg
- interrupts
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@50 {
compatible = "imagis,ist3038c";
reg = <0x50>;
interrupt-parent = <&gpio>;
interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
vdd-supply = <&ldo1_reg>;
vddio-supply = <&ldo2_reg>;
touchscreen-size-x = <720>;
touchscreen-size-y = <1280>;
touchscreen-fuzz-x = <10>;
touchscreen-fuzz-y = <10>;
touchscreen-inverted-x;
touchscreen-inverted-y;
};
};
- |
#include <dt-bindings/input/linux-event-codes.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@50 {
compatible = "imagis,ist3032c";
reg = <0x50>;
interrupt-parent = <&gpio>;
interrupts = <72 IRQ_TYPE_EDGE_FALLING>;
vdd-supply = <&ldo2>;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
linux,keycodes = <KEY_APPSELECT>, <KEY_BACK>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/melfas,mip4_ts.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/melfas,mip4_ts.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MELFAS MIP4 Touchscreen
maintainers:
- Ariel D'Alessandro <ariel.dalessandro@collabora.com>
properties:
compatible:
const: melfas,mip4_ts
reg:
description: I2C address of the chip (0x48 or 0x34)
maxItems: 1
interrupts:
maxItems: 1
ce-gpios:
description:
GPIO connected to the CE (chip enable) pin of the chip (active high)
maxItems: 1
required:
- compatible
- reg
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@34 {
compatible = "melfas,mip4_ts";
reg = <0x34>;
interrupts-extended = <&tlmm 13 IRQ_TYPE_EDGE_FALLING>;
ce-gpios = <&tlmm 12 GPIO_ACTIVE_HIGH>;
pinctrl-0 = <&touchscreen_default>;
pinctrl-names = "default";
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/melfas,mms114.yaml
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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/melfas,mms114.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Melfas MMS114 family touchscreen controller
maintainers:
- Linus Walleij <linusw@kernel.org>
allOf:
- $ref: touchscreen.yaml#
properties:
$nodename:
pattern: "^touchscreen(@.*)?$"
compatible:
oneOf:
- enum:
- melfas,mms114
- melfas,mms134s
- melfas,mms136
- melfas,mms152
- melfas,mms345l
- items:
- enum:
- melfas,mms252
- const: melfas,mms114
reg:
description: I2C address
clock-frequency:
description: I2C client clock frequency, defined for host
minimum: 100000
maximum: 400000
interrupts:
maxItems: 1
avdd-supply:
description: Analog power supply regulator on AVDD pin
vdd-supply:
description: Digital power supply regulator on VDD pin
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
touchscreen-fuzz-pressure: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-swapped-x-y: true
touchscreen-max-pressure: true
linux,keycodes:
description: Keycodes for the touch keys
minItems: 1
maxItems: 15
additionalProperties: false
required:
- compatible
- reg
- interrupts
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@48 {
compatible = "melfas,mms114";
reg = <0x48>;
interrupt-parent = <&gpio>;
interrupts = <39 IRQ_TYPE_EDGE_FALLING>;
avdd-supply = <&ldo1_reg>;
vdd-supply = <&ldo2_reg>;
touchscreen-size-x = <720>;
touchscreen-size-y = <1280>;
touchscreen-fuzz-x = <10>;
touchscreen-fuzz-y = <10>;
touchscreen-fuzz-pressure = <10>;
touchscreen-inverted-x;
touchscreen-inverted-y;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml
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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/mstar,msg2638.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: MStar msg2638 touchscreen controller
maintainers:
- Vincent Knecht <vincent.knecht@mailoo.org>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- mstar,msg2138
- mstar,msg2638
reg:
const: 0x26
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
vdd-supply:
description: Power supply regulator for the chip
vddio-supply:
description: Power supply regulator for the I2C bus
touchscreen-size-x: true
touchscreen-size-y: true
linux,keycodes:
minItems: 1
maxItems: 4
additionalProperties: false
required:
- compatible
- reg
- interrupts
- reset-gpios
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@26 {
compatible = "mstar,msg2638";
reg = <0x26>;
interrupt-parent = <&msmgpio>;
interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
reset-gpios = <&msmgpio 100 GPIO_ACTIVE_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&ts_int_reset_default>;
vdd-supply = <&pm8916_l17>;
vddio-supply = <&pm8916_l5>;
touchscreen-size-x = <2048>;
touchscreen-size-y = <2048>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/neonode,zforce.yaml
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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/neonode,zforce.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Neonode infrared touchscreen controller
maintainers:
- Heiko Stuebner <heiko@sntech.de>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: neonode,zforce
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
irq-gpios:
maxItems: 1
x-size:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint32
y-size:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint32
vdd-supply: true
required:
- compatible
- reg
- interrupts
- reset-gpios
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@50 {
compatible = "neonode,zforce";
reg = <0x50>;
interrupts = <2 0>;
vdd-supply = <&reg_zforce_vdd>;
reset-gpios = <&gpio5 9 0>; /* RST */
irq-gpios = <&gpio5 6 0>; /* IRQ, optional */
touchscreen-min-x = <0>;
touchscreen-size-x = <800>;
touchscreen-min-y = <0>;
touchscreen-size-y = <600>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/novatek,nvt-ts.yaml
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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/novatek,nvt-ts.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Novatek NVT Touchscreen Controller
maintainers:
- Hans de Goede <hdegoede@redhat.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- novatek,nt11205-ts
- novatek,nt36672a-ts
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
vcc-supply: true
iovcc-supply: true
required:
- compatible
- reg
- interrupts
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@1 {
compatible = "novatek,nt36672a-ts";
reg = <0x01>;
interrupts-extended = <&tlmm 31 IRQ_TYPE_EDGE_RISING>;
reset-gpios = <&tlmm 32 GPIO_ACTIVE_LOW>;
vcc-supply = <&vreg_l22a_2p85>;
iovcc-supply = <&vreg_l14a_1p8>;
pinctrl-0 = <&ts_int_default &ts_reset_default>;
pinctrl-1 = <&ts_int_sleep &ts_reset_sleep>;
pinctrl-names = "default", "sleep";
touchscreen-size-x = <1080>;
touchscreen-size-y = <2246>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/nxp,lpc3220-tsc.yaml
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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/nxp,lpc3220-tsc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP LPC32xx SoC Touchscreen Controller (TSC)
maintainers:
- Frank Li <Frank.Li@nxp.com>
properties:
compatible:
const: nxp,lpc3220-tsc
reg:
maxItems: 1
clocks:
maxItems: 1
interrupts:
maxItems: 1
required:
- compatible
- reg
- clocks
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/lpc32xx-clock.h>
touchscreen@40048000 {
compatible = "nxp,lpc3220-tsc";
reg = <0x40048000 0x1000>;
interrupt-parent = <&mic>;
interrupts = <39 0>;
clocks = <&clk LPC32XX_CLK_ADC>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/pixcir,pixcir_ts.yaml
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/pixcir,pixcir_ts.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Pixcir Touchscreen Controller
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- pixcir,pixcir_ts
- pixcir,pixcir_tangoc
reg:
maxItems: 1
interrupts:
maxItems: 1
attb-gpio:
maxItems: 1
reset-gpios:
maxItems: 1
enable-gpios:
maxItems: 1
wake-gpios:
maxItems: 1
unevaluatedProperties: false
required:
- compatible
- reg
- interrupts
- attb-gpio
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@5c {
compatible = "pixcir,pixcir_ts";
reg = <0x5c>;
interrupts = <2 0>;
attb-gpio = <&gpf 2 0 2>;
touchscreen-size-x = <800>;
touchscreen-size-y = <600>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/resistive-adc-touch.yaml
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/resistive-adc-touch.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Generic resistive touchscreen ADC
maintainers:
- Oleksij Rempel <o.rempel@pengutronix.de>
description: |
Generic ADC based resistive touchscreen controller
The device must be connected to an ADC device that provides channels for
position measurement and optional pressure.
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: resistive-adc-touch
io-channels:
minItems: 2
items:
- description: x
- description: y
- description: pressure (optional)
- description: z1 (optional)
- description: z2 (optional)
io-channel-names:
oneOf:
- items:
- enum: [x, y]
- enum: [x, y]
- items:
- enum: [x, y, pressure]
- enum: [x, y, pressure]
- enum: [x, y, pressure]
- items:
- enum: [x, y, z1, z2]
- enum: [x, y, z1, z2]
- enum: [x, y, z1, z2]
- enum: [x, y, z1, z2]
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-swapped-x-y: true
touchscreen-min-pressure: true
touchscreen-x-plate-ohms: true
unevaluatedProperties: false
required:
- compatible
- io-channels
- io-channel-names
examples:
- |
touchscreen {
compatible = "resistive-adc-touch";
io-channels = <&adc 24>, <&adc 25>;
io-channel-names = "y", "x";
};
- |
touchscreen {
compatible = "resistive-adc-touch";
touchscreen-min-pressure = <50000>;
io-channels = <&adc 24>, <&adc 25>, <&adc 26>;
io-channel-names = "y", "pressure", "x";
};
- |
touchscreen {
compatible = "resistive-adc-touch";
touchscreen-min-pressure = <50000>;
io-channels = <&adc 1>, <&adc 2>, <&adc 3>, <&adc 4>;
io-channel-names = "x", "z1", "z2", "y";
touchscreen-x-plate-ohms = <800>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/rohm,bu21013.yaml
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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/rohm,bu21013.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Rohm BU21013 touchscreen
description:
Rohm BU21013 I2C driven touchscreen controller.
maintainers:
- Dario Binacchi <dario.binacchi@amarulasolutions.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- rohm,bu21013_tp
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
touch-gpios:
maxItems: 1
description: GPIO registering a touch event.
avdd-supply:
description: Analogic power supply
rohm,touch-max-x:
deprecated: true
description: Maximum value on the X axis.
$ref: /schemas/types.yaml#/definitions/uint32
rohm,touch-max-y:
deprecated: true
description: Maximum value on the Y axis.
$ref: /schemas/types.yaml#/definitions/uint32
rohm,flip-x:
deprecated: true
description: Flip touch coordinates on the X axis
type: boolean
rohm,flip-y:
deprecated: true
description: Flip touch coordinates on the Y axis
type: boolean
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
additionalProperties: false
required:
- compatible
- reg
- reset-gpios
- interrupts
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@5c {
compatible = "rohm,bu21013_tp";
reg = <0x5c>;
interrupt-parent = <&gpio2>;
interrupts = <0x20 IRQ_TYPE_LEVEL_LOW>;
reset-gpios = <&gpio2 19 GPIO_ACTIVE_LOW>;
touch-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
avdd-supply = <&ab8500_ldo_aux1_reg>;
touchscreen-size-x = <384>;
touchscreen-size-y = <704>;
touchscreen-inverted-y;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/samsung,s6sy761.yaml
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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/samsung,s6sy761.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Samsung S6SY761 touchscreen controller
maintainers:
- Andi Shyti <andi.shyti@kernel.org>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: samsung,s6sy761
reg:
maxItems: 1
interrupts:
maxItems: 1
avdd-supply: true
vdd-supply: true
unevaluatedProperties: false
required:
- compatible
- reg
- interrupts
- avdd-supply
- vdd-supply
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@48 {
compatible = "samsung,s6sy761";
reg = <0x48>;
interrupt-parent = <&gpa1>;
interrupts = <1 IRQ_TYPE_LEVEL_HIGH>;
avdd-supply = <&ldo30_reg>;
vdd-supply = <&ldo31_reg>;
touchscreen-size-x = <4096>;
touchscreen-size-y = <4096>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/silead,gsl1680.yaml
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/touchscreen/silead,gsl1680.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Silead GSL1680 Touchscreen Controller
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- silead,gsl1680
- silead,gsl1688
- silead,gsl3670
- silead,gsl3675
- silead,gsl3692
reg:
maxItems: 1
interrupts:
maxItems: 1
power-gpios:
maxItems: 1
firmware-name:
maxItems: 1
description: >
File basename for board specific firmware
silead,max-fingers:
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 5
description: >
Maximum number of fingers the touchscreen can detect
silead,home-button:
type: boolean
description: >
Does the device have a capacitive home-button build into the
touchscreen?
avdd-supply:
description: >
Regulator phandle for controller AVDD
vddio-supply:
description: >
Regulator phandle for controller VDDIO
unevaluatedProperties: false
required:
- compatible
- reg
- interrupts
- power-gpios
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@40 {
compatible = "silead,gsl1680";
reg = <0x40>;
interrupt-parent = <&pio>;
interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
power-gpios = <&pio 1 3 GPIO_ACTIVE_HIGH>;
touchscreen-size-x = <480>;
touchscreen-size-y = <800>;
touchscreen-inverted-x;
touchscreen-swapped-x-y;
silead,max-fingers = <5>;
};
};
...
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/sis_i2c.txt
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* SiS I2C Multiple Touch Controller
Required properties:
- compatible: must be "sis,9200-ts"
- reg: i2c slave address
- interrupts: touch controller interrupt (see interrupt
binding [0])
Optional properties:
- pinctrl-names: should be "default" (see pinctrl binding [1]).
- pinctrl-0: a phandle pointing to the pin settings for the
device (see pinctrl binding [1]).
- attn-gpios: the gpio pin used as attention line
- reset-gpios: the gpio pin used to reset the controller
- wakeup-source: touchscreen can be used as a wakeup source
[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
[1]: Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
Example:
sis9255@5c {
compatible = "sis,9200-ts";
reg = <0x5c>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sis>;
interrupt-parent = <&gpio3>;
interrupts = <19 IRQ_TYPE_EDGE_FALLING>;
irq-gpios = <&gpio3 19 GPIO_ACTIVE_LOW>;
reset-gpios = <&gpio2 30 GPIO_ACTIVE_LOW>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/sitronix,st1232.yaml
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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/sitronix,st1232.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Sitronix st1232 or st1633 touchscreen controller
maintainers:
- Bastian Hecht <hechtb@gmail.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
oneOf:
- enum:
- sitronix,st1232
- sitronix,st1633
- items:
- const: sitronix,st1624
- const: sitronix,st1633
reg:
maxItems: 1
interrupts:
maxItems: 1
gpios:
description: A phandle to the reset GPIO
maxItems: 1
wakeup-source:
type: boolean
required:
- compatible
- reg
- interrupts
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/input/linux-event-codes.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@55 {
compatible = "sitronix,st1232";
reg = <0x55>;
interrupts = <2 0>;
gpios = <&gpio1 166 0>;
wakeup-source;
touch-overlay {
segment-0 {
label = "Touchscreen";
x-origin = <0>;
x-size = <240>;
y-origin = <40>;
y-size = <280>;
};
segment-1a {
label = "Camera light";
linux,code = <KEY_LIGHTS_TOGGLE>;
x-origin = <40>;
x-size = <40>;
y-origin = <0>;
y-size = <40>;
};
segment-2a {
label = "Power";
linux,code = <KEY_POWER>;
x-origin = <160>;
x-size = <40>;
y-origin = <0>;
y-size = <40>;
};
};
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/st,stmfts.yaml
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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/st,stmfts.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ST-Microelectronics FingerTip touchscreen controller
maintainers:
- Krzysztof Kozlowski <krzk@kernel.org>
description:
The ST-Microelectronics FingerTip device provides a basic touchscreen
functionality. Along with it the user can enable the touchkey which can work
as a basic HOME and BACK key for phones.
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
const: st,stmfts
reg:
maxItems: 1
avdd-supply:
description: Analogic power supply
interrupts:
maxItems: 1
ledvdd-supply:
description: Power supply to the touch key leds
touch-key-connected:
type: boolean
description: The touchkey feature is connected
vdd-supply:
description: Power supply
reset-gpios:
description: Reset GPIO (active-low)
maxItems: 1
required:
- compatible
- reg
- avdd-supply
- interrupts
- vdd-supply
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@49 {
compatible = "st,stmfts";
reg = <0x49>;
interrupt-parent = <&gpa1>;
interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
touchscreen-size-x = <1599>;
touchscreen-size-y = <2559>;
touch-key-connected;
avdd-supply = <&ldo30_reg>;
vdd-supply = <&ldo31_reg>;
ledvdd-supply = <&ldo33_reg>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/technologic,ts4800-ts.yaml
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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/technologic,ts4800-ts.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TS-4800 Touchscreen
maintainers:
- Eduard Bostina <egbostina@gmail.com>
properties:
compatible:
const: technologic,ts4800-ts
reg:
maxItems: 1
syscon:
$ref: /schemas/types.yaml#/definitions/phandle-array
items:
- items:
- description: Phandle to the FPGA's syscon
- description: Offset to the touchscreen register
- description: Offset to the touchscreen enable bit
description: Phandle / integers array that points to the syscon node which
describes the FPGA's syscon registers.
required:
- compatible
- reg
- syscon
additionalProperties: false
examples:
- |
touchscreen@1000 {
compatible = "technologic,ts4800-ts";
reg = <0x1000 0x100>;
syscon = <&fpga_syscon 0x20 3>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/ti,ads7843.yaml
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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/ti,ads7843.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI's SPI driven touch screen controllers
maintainers:
- Alexander Stein <alexander.stein@ew.tq-group.com>
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
- Marek Vasut <marex@denx.de>
description:
TI's ADS7843, ADS7845, ADS7846, ADS7873, TSC2046 SPI driven touch screen
controllers.
properties:
compatible:
enum:
- ti,ads7843
- ti,ads7845
- ti,ads7846
- ti,ads7873
- ti,tsc2046
interrupts:
maxItems: 1
pendown-gpio:
maxItems: 1
description:
GPIO handle describing the pin the !PENIRQ line is connected to.
vcc-supply:
description:
A regulator node for the supply voltage.
wakeup-source: true
ti,debounce-max:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Max number of additional readings per sample.
ti,debounce-rep:
$ref: /schemas/types.yaml#/definitions/uint16
description:
Additional consecutive good readings required after the first two.
ti,debounce-tol:
$ref: /schemas/types.yaml#/definitions/uint16
description:
Tolerance used for filtering.
ti,hsync-gpios:
maxItems: 1
description:
GPIO line to poll for hsync.
ti,keep-vref-on:
$ref: /schemas/types.yaml#/definitions/flag
description:
Set to keep Vref on for differential measurements as well.
ti,pendown-gpio-debounce:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Platform specific debounce time for the pendown-gpio.
ti,penirq-recheck-delay-usecs:
$ref: /schemas/types.yaml#/definitions/uint16
description:
If set to non-zero, after samples are taken this delay is applied and
penirq is rechecked, to help avoid false events. This value is
affected by the material used to build the touch layer.
ti,pressure-max:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Maximum reported pressure value.
ti,pressure-min:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Minimum reported pressure value (threshold).
ti,settle-delay-usec:
$ref: /schemas/types.yaml#/definitions/uint16
description:
Settling time of the analog signals; a function of Vcc and the
capacitance on the X/Y drivers. If set to non-zero, two samples are
taken with settle_delay us apart, and the second one is used. ~150
uSec with 0.01uF caps.
ti,swap-xy:
deprecated: true
$ref: /schemas/types.yaml#/definitions/flag
description:
Swap x and y axis.
ti,vref-delay-usecs:
$ref: /schemas/types.yaml#/definitions/uint16
description:
Vref supply delay in usecs, 0 for external Vref.
ti,vref-mv:
$ref: /schemas/types.yaml#/definitions/uint16
description:
The VREF voltage, in millivolts.
Set to 0 to use internal references (ADS7846).
ti,x-plate-ohms:
$ref: /schemas/types.yaml#/definitions/uint16
description:
Resistance of the X-plate, in Ohms.
ti,x-max:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Maximum value on the X axis.
ti,x-min:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Minimum value on the X axis.
ti,y-plate-ohms:
$ref: /schemas/types.yaml#/definitions/uint16
description:
Resistance of the Y-plate, in Ohms.
ti,y-max:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Maximum value on the Y axis.
ti,y-min:
deprecated: true
$ref: /schemas/types.yaml#/definitions/uint16
description:
Minimum value on the Y axis.
required:
- compatible
- reg
allOf:
- $ref: touchscreen.yaml#
- $ref: /schemas/spi/spi-peripheral-props.yaml#
unevaluatedProperties: false
examples:
- |
spi{
#address-cells = <1>;
#size-cells = <0>;
touchscreen@0 {
compatible = "ti,tsc2046";
reg = <0>; /* CS0 */
interrupt-parent = <&gpio1>;
interrupts = <8 0>; /* BOOT6 / GPIO 8 */
pendown-gpio = <&gpio1 8 0>;
spi-max-frequency = <1000000>;
vcc-supply = <&reg_vcc3>;
wakeup-source;
ti,pressure-max = /bits/ 16 <255>;
ti,x-max = /bits/ 16 <8000>;
ti,x-min = /bits/ 16 <0>;
ti,x-plate-ohms = /bits/ 16 <40>;
ti,y-max = /bits/ 16 <4800>;
ti,y-min = /bits/ 16 <0>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/ti,am3359-tsc.yaml
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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/ti,am3359-tsc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: TI AM3359 Touchscreen controller
maintainers:
- Miquel Raynal <miquel.raynal@bootlin.com>
properties:
compatible:
const: ti,am3359-tsc
ti,wires:
description: Wires refer to application modes i.e. 4/5/8 wire touchscreen
support on the platform.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [4, 5, 8]
ti,x-plate-resistance:
description: X plate resistance
$ref: /schemas/types.yaml#/definitions/uint32
ti,coordinate-readouts:
description: The sequencer supports a total of 16 programmable steps. Each
step is used to read a single coordinate. A single readout is enough but
multiple reads can increase the quality. A value of 5 means, 5 reads for
X, 5 for Y and 2 for Z (always). This utilises 12 of the 16 software steps
available. The remaining 4 can be used by the ADC.
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 1
maximum: 6
ti,wire-config:
description: Different boards could have a different order for connecting
wires on touchscreen. We need to provide an 8-bit number where the
first four bits represent the analog lines and the next 4 bits represent
positive/negative terminal on that input line. Notations to represent the
input lines and terminals respectively are as follows, AIN0 = 0, AIN1 = 1
and so on until AIN7 = 7. XP = 0, XN = 1, YP = 2, YN = 3.
$ref: /schemas/types.yaml#/definitions/uint32-array
minItems: 4
maxItems: 8
ti,charge-delay:
description: Length of touch screen charge delay step in terms of ADC clock
cycles. Charge delay value should be large in order to avoid false pen-up
events. This value effects the overall sampling speed, hence need to be
kept as low as possible, while avoiding false pen-up event. Start from a
lower value, say 0x400, and increase value until false pen-up events are
avoided. The pen-up detection happens immediately after the charge step,
so this does in fact function as a hardware knob for adjusting the amount
of "settling time".
$ref: /schemas/types.yaml#/definitions/uint32
required:
- compatible
- ti,wires
- ti,x-plate-resistance
- ti,coordinate-readouts
- ti,wire-config
additionalProperties: false
examples:
- |
tsc {
compatible = "ti,am3359-tsc";
ti,wires = <4>;
ti,x-plate-resistance = <200>;
ti,coordinate-readouts = <5>;
ti,wire-config = <0x00 0x11 0x22 0x33>;
ti,charge-delay = <0x400>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/ti,tsc2005.yaml
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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/ti,tsc2005.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments TSC2004 and TSC2005 touchscreen controller
maintainers:
- Marek Vasut <marex@denx.de>
- Michael Welling <mwelling@ieee.org>
properties:
$nodename:
pattern: "^touchscreen(@.*)?$"
compatible:
enum:
- ti,tsc2004
- ti,tsc2005
reg:
maxItems: 1
description: |
I2C address when used on the I2C bus, or the SPI chip select index
when used on the SPI bus
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
description: GPIO specifier for the controller reset line
spi-max-frequency:
description: TSC2005 SPI bus clock frequency.
maximum: 25000000
ti,x-plate-ohms:
description: resistance of the touchscreen's X plates in ohm (defaults to 280)
ti,esd-recovery-timeout-ms:
description: |
if the touchscreen does not respond after the configured time
(in milli seconds), the driver will reset it. This is disabled
by default.
vio-supply:
description: Regulator specifier
touchscreen-fuzz-pressure: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
touchscreen-max-pressure: true
touchscreen-size-x: true
touchscreen-size-y: true
allOf:
- $ref: touchscreen.yaml#
- if:
properties:
compatible:
contains:
const: ti,tsc2004
then:
properties:
spi-max-frequency: false
additionalProperties: false
required:
- compatible
- reg
- interrupts
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@48 {
compatible = "ti,tsc2004";
reg = <0x48>;
vio-supply = <&vio>;
reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>;
interrupts-extended = <&gpio1 27 IRQ_TYPE_EDGE_RISING>;
touchscreen-fuzz-x = <4>;
touchscreen-fuzz-y = <7>;
touchscreen-fuzz-pressure = <2>;
touchscreen-size-x = <4096>;
touchscreen-size-y = <4096>;
touchscreen-max-pressure = <2048>;
ti,x-plate-ohms = <280>;
ti,esd-recovery-timeout-ms = <8000>;
};
};
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@0 {
compatible = "ti,tsc2005";
spi-max-frequency = <6000000>;
reg = <0>;
vio-supply = <&vio>;
reset-gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* 104 */
interrupts-extended = <&gpio4 4 IRQ_TYPE_EDGE_RISING>; /* 100 */
touchscreen-fuzz-x = <4>;
touchscreen-fuzz-y = <7>;
touchscreen-fuzz-pressure = <2>;
touchscreen-size-x = <4096>;
touchscreen-size-y = <4096>;
touchscreen-max-pressure = <2048>;
ti,x-plate-ohms = <280>;
ti,esd-recovery-timeout-ms = <8000>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/ti,tsc2007.yaml
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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/ti,tsc2007.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Texas Instruments tsc2007 touchscreen controller
maintainers:
- Frank Li <Frank.Li@nxp.com>
properties:
compatible:
const: ti,tsc2007
reg:
maxItems: 1
interrupts:
maxItems: 1
ti,x-plate-ohms:
description: X-plate resistance in ohms.
gpios: true
pendown-gpio: true
wakeup-source: true
ti,max-rt:
$ref: /schemas/types.yaml#/definitions/uint32
description: maximum pressure.
ti,fuzzx:
$ref: /schemas/types.yaml#/definitions/uint32
description:
specifies the absolute input fuzz x value.
If set, it will permit noise in the data up to +- the value given to the fuzz
parameter, that is used to filter noise from the event stream.
ti,fuzzy:
$ref: /schemas/types.yaml#/definitions/uint32
description: specifies the absolute input fuzz y value.
ti,fuzzz:
$ref: /schemas/types.yaml#/definitions/uint32
description: specifies the absolute input fuzz z value.
ti,poll-period:
$ref: /schemas/types.yaml#/definitions/uint32
description:
how much time to wait (in milliseconds) before reading again the
values from the tsc2007.
"#io-channel-cells":
const: 1
required:
- compatible
- reg
- ti,x-plate-ohms
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
touch@49 {
compatible = "ti,tsc2007";
reg = <0x49>;
interrupt-parent = <&gpio4>;
interrupts = <0x0 0x8>;
gpios = <&gpio4 0 0>;
ti,x-plate-ohms = <180>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/toradex,vf50-touchscreen.yaml
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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/toradex,vf50-touchscreen.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Toradex Colibri VF50 Touchscreen
maintainers:
- Dmitry Torokhov <dmitry.torokhov@gmail.com>
- Sanchayan Maity <maitysanchayan@gmail.com>
properties:
compatible:
const: toradex,vf50-touchscreen
interrupts:
maxItems: 1
io-channels:
maxItems: 4
description:
adc channels being used by the Colibri VF50 module
IIO ADC for Y-, X-, Y+, X+ connections
xp-gpios:
description: FET gate driver for input of X+
xm-gpios:
description: FET gate driver for input of X-
yp-gpios:
description: FET gate driver for input of Y+
ym-gpios:
description: FET gate driver for input of Y-
vf50-ts-min-pressure:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 50
maximum: 2000
description: pressure level at which to stop measuring X/Y values
required:
- compatible
- io-channels
- xp-gpios
- xm-gpios
- yp-gpios
- ym-gpios
- interrupts
- vf50-ts-min-pressure
allOf:
- $ref: touchscreen.yaml#
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
touchscreen {
compatible = "toradex,vf50-touchscreen";
interrupt-parent = <&gpio0>;
interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
io-channels = <&adc1 0>, <&adc0 0>, <&adc0 1>, <&adc1 2>;
xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
pinctrl-names = "idle", "default";
pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>;
pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>;
vf50-ts-min-pressure = <200>;
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/touchscreen.yaml
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# 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
touch-overlay:
description: |
List of nodes defining segments (touch areas) on the touchscreen.
This object can be used to describe a series of segments to restrict
the region within touch events are reported or buttons with a specific
functionality.
This is of special interest if the touchscreen is shipped with a physical
overlay on top of it with a frame that hides some part of the original
touchscreen area. Printed buttons on that overlay are also a typical
use case.
A new touchscreen area is defined as a sub-node without a key code. If a
key code is defined in the sub-node, it will be interpreted as a button.
The x-origin and y-origin properties of a touchscreen area define the
offset of a new origin from where the touchscreen events are referenced.
This offset is applied to the events accordingly. The x-size and y-size
properties define the size of the touchscreen effective area.
The following example shows a new touchscreen area with the new origin
(0',0') for the touch events generated by the device.
Touchscreen (full area)
┌────────────────────────────────────────┐
│ ┌───────────────────────────────┐ │
│ │ │ │
│ ├ y-size │ │
│ │ │ │
│ │ touchscreen area │ │
│ │ (no key code) │ │
│ │ │ │
│ │ x-size │ │
│ ┌└──────────────┴────────────────┘ │
│(0',0') │
┌└────────────────────────────────────────┘
(0,0)
where (0',0') = (0+x-origin,0+y-origin)
Sub-nodes with key codes report the touch events on their surface as key
events instead.
The following example shows a touchscreen with a single button on it.
Touchscreen (full area)
┌───────────────────────────────────┐
│ │
│ │
│ ┌─────────┐ │
│ │button 0 │ │
│ │KEY_POWER│ │
│ └─────────┘ │
│ │
│ │
┌└───────────────────────────────────┘
(0,0)
Segments defining buttons and clipped toushcreen areas can be combined
as shown in the following example.
In that case only the events within the touchscreen area are reported
as touch events. Events within the button areas report their associated
key code. Any events outside the defined areas are ignored.
Touchscreen (full area)
┌─────────┬──────────────────────────────┐
│ │ │
│ │ ┌───────────────────────┐ │
│ button 0│ │ │ │
│KEY_POWER│ │ │ │
│ │ │ │ │
├─────────┤ │ touchscreen area │ │
│ │ │ (no key code) │ │
│ │ │ │ │
│ button 1│ │ │ │
│ KEY_INFO│ ┌└───────────────────────┘ │
│ │(0',0') │
┌└─────────┴──────────────────────────────┘
(0,0)
type: object
patternProperties:
'^segment-':
type: object
description:
Each segment is represented as a sub-node.
properties:
x-origin:
description: horizontal origin of the node area
$ref: /schemas/types.yaml#/definitions/uint32
y-origin:
description: vertical origin of the node area
$ref: /schemas/types.yaml#/definitions/uint32
x-size:
description: horizontal resolution of the node area
$ref: /schemas/types.yaml#/definitions/uint32
y-size:
description: vertical resolution of the node area
$ref: /schemas/types.yaml#/definitions/uint32
label:
description: descriptive name of the segment
$ref: /schemas/types.yaml#/definitions/string
linux,code: true
required:
- x-origin
- y-origin
- x-size
- y-size
unevaluatedProperties: false
debounce-delay-us:
description: Minimum duration in microseconds a signal must remain stable
to be considered valid.
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
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
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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/trivial-touch.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Trivial touch screen controller with i2c interface
maintainers:
- Frank Li <Frank.Li@nxp.com>
properties:
compatible:
enum:
# The Azoteq IQS550, IQS572 and IQS525 trackpad and touchscreen controllers
- azoteq,iqs550
- azoteq,iqs572
- azoteq,iqs525
# Himax hx83100a touchscreen controller
- himax,hx83100a
# Himax hx83112b touchscreen controller
- himax,hx83112b
# Hynitron cstxxx series touchscreen controller
- hynitron,cst340
# Ilitek I2C Touchscreen Controller
- ilitek,ili2130
- ilitek,ili2131
- ilitek,ili2132
- ilitek,ili2316
- ilitek,ili2322
- ilitek,ili2323
- ilitek,ili2326
- ilitek,ili2520
- ilitek,ili2521
# MAXI MAX11801 Resistive touch screen controller with i2c interface
- maxim,max11801
# Microchip AR1020 and AR1021 touchscreen interface (I2C)
- microchip,ar1021-i2c
# Trivial touch screen controller with i2c interface
- semtech,sx8650
- semtech,sx8654
- semtech,sx8655
- semtech,sx8656
reg:
maxItems: 1
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
wakeup-source: true
required:
- compatible
- reg
- interrupts
allOf:
- $ref: touchscreen.yaml
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@48 {
compatible = "maxim,max11801";
reg = <0x48>;
interrupt-parent = <&gpio3>;
interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/wacom,w9007a-lt03.yaml
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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/wacom,w9007a-lt03.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Wacom W9000-series penabled I2C touchscreen
maintainers:
- Hendrik Noack <hendrik-noack@gmx.de>
description: |
The W9000-series are penabled touchscreen controllers by Wacom.
The firmware of controllers in different devices may differ. This can also
affect the controller's behavior.
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- wacom,w9002
- wacom,w9007a-lt03
- wacom,w9007a-v1
reg:
maxItems: 1
interrupts:
maxItems: 1
vdd-supply: true
flash-mode-gpios:
maxItems: 1
reset-gpios:
maxItems: 1
required:
- compatible
- reg
- interrupts
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
digitizer@56 {
compatible = "wacom,w9007a-lt03";
reg = <0x56>;
interrupt-parent = <&gpd1>;
interrupts = <1 IRQ_TYPE_EDGE_RISING>;
vdd-supply = <&stylus_reg>;
flash-mode-gpios = <&gpd1 3 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpx0 1 GPIO_ACTIVE_LOW>;
touchscreen-x-mm = <216>;
touchscreen-y-mm = <135>;
touchscreen-inverted-x;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/zeitec,zet6223.yaml
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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/zeitec,zet6223.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Zeitec ZET6223 touchscreen controller
description:
Zeitec ZET6223 I2C driven touchscreen controller.
maintainers:
- Dario Binacchi <dario.binacchi@amarulasolutions.com>
allOf:
- $ref: touchscreen.yaml#
properties:
compatible:
enum:
- zeitec,zet6223
reg:
maxItems: 1
interrupts:
maxItems: 1
vio-supply:
description: 1.8V or 3.3V VIO supply.
vcc-supply:
description: 3.3V VCC supply.
touchscreen-inverted-x: true
touchscreen-inverted-y: true
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-swapped-x-y: true
additionalProperties: false
required:
- compatible
- reg
- interrupts
examples:
- |
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@76 {
compatible = "zeitec,zet6223";
reg = <0x76>;
interrupt-parent = <&pio>;
interrupts = <6 11 IRQ_TYPE_EDGE_FALLING>;
};
};
linux-7.2.3/Documentation/devicetree/bindings/input/touchscreen/zinitix,bt400.yaml
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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/zinitix,bt400.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Zinitix BT4xx and BT5xx series touchscreen controller
description: The Zinitix BT4xx and BT5xx series of touchscreen controllers
are Korea-produced touchscreens with embedded microcontrollers. The
BT4xx series was produced 2010-2013 and the BT5xx series 2013-2014.
maintainers:
- Michael Srba <Michael.Srba@seznam.cz>
- Linus Walleij <linusw@kernel.org>
allOf:
- $ref: touchscreen.yaml#
- $ref: ../input.yaml#
properties:
$nodename:
pattern: "^touchscreen(@.*)?$"
compatible:
enum:
- zinitix,bt402
- zinitix,bt403
- zinitix,bt404
- zinitix,bt412
- zinitix,bt413
- zinitix,bt431
- zinitix,bt432
- zinitix,bt531
- zinitix,bt532
- zinitix,bt538
- zinitix,bt541
- zinitix,bt548
- zinitix,bt554
- zinitix,at100
reg:
description: I2C address on the I2C bus
clock-frequency:
description: I2C client clock frequency, defined for host when using
the device on the I2C bus
minimum: 0
maximum: 400000
interrupts:
description: Interrupt to host
maxItems: 1
vcca-supply:
description: Analog power supply regulator on the VCCA pin
vdd-supply:
description: Digital power supply regulator on the VDD pin.
In older device trees this can be the accidental name for the analog
supply on the VCCA pin, and in that case the deprecated vddo-supply is
used for the digital power supply.
vddo-supply:
description: Deprecated name for the digital power supply, use vdd-supply
as this reflects the real name of the pin. If this supply is present,
the vdd-supply represents VCCA instead of VDD. Implementers should first
check for this property, and if it is present assume that the vdd-supply
represents the analog supply.
deprecated: true
reset-gpios:
description: Reset line for the touchscreen, should be tagged
as GPIO_ACTIVE_LOW
zinitix,mode:
description: Mode of reporting touch points. Some modes may not work
with a particular ts firmware for unknown reasons. Available modes are
1 and 2. Mode 2 is the default and preferred.
$ref: /schemas/types.yaml#/definitions/uint32
enum: [1, 2]
linux,keycodes:
description:
This property specifies an array of keycodes assigned to the
touch-keys that can be present in some touchscreen configurations.
If the touch-keys are enabled, controller firmware will assign some
touch sense lines to those keys.
minItems: 1
maxItems: 8
touchscreen-size-x: true
touchscreen-size-y: true
touchscreen-fuzz-x: true
touchscreen-fuzz-y: true
additionalProperties: false
required:
- compatible
- reg
- interrupts
- touchscreen-size-x
- touchscreen-size-y
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@20 {
compatible = "zinitix,bt541";
reg = <0x20>;
interrupt-parent = <&gpio>;
interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
vcca-supply = <&reg_vcca_tsp>;
vdd-supply = <&reg_vdd_tsp>;
touchscreen-size-x = <540>;
touchscreen-size-y = <960>;
zinitix,mode = <2>;
};
};