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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/input/syna,rmi4.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Synaptics RMI4 compliant devices
maintainers:
- Jason A. Donenfeld <Jason@zx2c4.com>
- Matthias Schiffer <matthias.schiffer@ew.tq-group.com
- Vincent Huang <vincent.huang@tw.synaptics.com>
description: |
The Synaptics RMI4 (Register Mapped Interface 4) core is able to support RMI4
devices using different transports (I2C, SPI) and different functions (e.g.
Function 1, 2D sensors using Function 11 or 12).
properties:
compatible:
enum:
- syna,rmi4-i2c
- syna,rmi4-spi
reg:
maxItems: 1
'#address-cells':
const: 1
'#size-cells':
const: 0
interrupts:
maxItems: 1
reset-gpios:
maxItems: 1
description: Active low signal
spi-cpha: true
spi-cpol: true
syna,reset-delay-ms:
description:
Delay to wait after resetting the device.
syna,startup-delay-ms:
description:
Delay to wait after powering on the device.
vdd-supply: true
vio-supply: true
rmi4-f01@1:
type: object
additionalProperties: false
description:
Function 1
properties:
reg:
maxItems: 1
syna,nosleep-mode:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1, 2]
description:
If set the device will run at full power without sleeping. nosleep
has 3 modes, 0 will not change the default setting, 1 will disable
nosleep (allow sleeping), and 2 will enable nosleep (disabling
sleep).
syna,wakeup-threshold:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Defines the amplitude of the disturbance to the background
capacitance that will cause the device to wake from dozing.
syna,doze-holdoff-ms:
description:
The delay to wait after the last finger lift and the first doze
cycle.
syna,doze-interval-ms:
description:
The time period that the device sleeps between finger activity.
required:
- reg
patternProperties:
"^rmi4-f1[12]@1[12]$":
type: object
unevaluatedProperties: false
$ref: /schemas/input/touchscreen/touchscreen.yaml#
description:
RMI4 Function 11 and Function 12 are for 2D touch position sensing.
properties:
reg:
maxItems: 1
syna,clip-x-low:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Minimum value for X.
syna,clip-y-low:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Minimum value for Y.
syna,clip-x-high:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Maximum value for X.
syna,clip-y-high:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Maximum value for Y.
syna,offset-x:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Add an offset to X.
syna,offset-y:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Add an offset to Y.
syna,delta-x-threshold:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Minimum distance on the X axis required to generate an interrupt in
reduced reporting mode.
syna,delta-y-threshold:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Minimum distance on the Y axis required to generate an interrupt in
reduced reporting mode.
syna,sensor-type:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [1, 2]
description: |
Sensor type: 1 for touchscreen 2 for touchpad.
syna,disable-report-mask:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Mask for disabling posiiton reporting. Used to disable reporing
absolute position data.
syna,rezero-wait-ms:
description:
Time to wait after issuing a rezero command.
required:
- reg
"^rmi4-f[0-9a-f]+@[0-9a-f]+$":
type: object
description:
Other functions, not documented yet.
properties:
reg:
maxItems: 1
required:
- reg
required:
- compatible
- reg
unevaluatedProperties: false
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
- if:
properties:
compatible:
contains:
const: syna,rmi4-i2c
then:
properties:
spi-rx-delay-us: false
spi-tx-delay-us: false
else:
properties:
syna,reset-delay-ms: false
syna,startup-delay-ms: false
examples:
- |
#include <dt-bindings/interrupt-controller/irq.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@20 {
compatible = "syna,rmi4-i2c";
reg = <0x20>;
interrupt-parent = <&gpx1>;
interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
syna,startup-delay-ms = <100>;
vdd-supply = <&tsp_vdd>;
vio-supply = <&ldo32_reg>;
pinctrl-0 = <&touch_irq>;
pinctrl-names = "default";
#address-cells = <1>;
#size-cells = <0>;
rmi4-f01@1 {
reg = <0x1>;
syna,nosleep-mode = <1>;
};
rmi4-f12@12 {
reg = <0x12>;
syna,sensor-type = <1>;
};
rmi4-f1a@1a {
reg = <0x1a>;
};
};
};
- |
#include <dt-bindings/interrupt-controller/irq.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@0 {
compatible = "syna,rmi4-spi";
reg = <0x0>;
interrupt-parent = <&gpx1>;
interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
spi-max-frequency = <4000000>;
spi-rx-delay-us = <30>;
spi-cpha;
spi-cpol;
#address-cells = <1>;
#size-cells = <0>;
rmi4-f01@1 {
reg = <0x1>;
syna,nosleep-mode = <1>;
};
rmi4-f11@11 {
reg = <0x11>;
touchscreen-inverted-y;
syna,sensor-type = <2>;
};
};
};
|
