diff options
Diffstat (limited to 'Documentation/devicetree/bindings/input/syna,rmi4.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/input/syna,rmi4.yaml | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/syna,rmi4.yaml b/Documentation/devicetree/bindings/input/syna,rmi4.yaml new file mode 100644 index 000000000000..b522c8d3ce0d --- /dev/null +++ b/Documentation/devicetree/bindings/input/syna,rmi4.yaml @@ -0,0 +1,273 @@ +# 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 + additionalProperties: true + + 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>; + }; + }; + }; |