dt-bindings: input: iqs5xx: Convert to YAML
This patch converts the legacy text-based binding document to YAML format. Extraneous details and touchscreen properties that weren't actually supported have been dropped. The reset GPIO has since been made optional in the driver; this is now reflected here as well. Signed-off-by: Jeff LaBundy <jeff@labundy.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210323021006.367-2-jeff@labundy.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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Jeff LaBundy
Dmitry Torokhov
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9d41359cac
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55f2645c92
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/input/touchscreen/azoteq,iqs5xx.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Azoteq IQS550/572/525 Trackpad/Touchscreen Controller
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maintainers:
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- Jeff LaBundy <jeff@labundy.com>
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description: |
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The Azoteq IQS550, IQS572 and IQS525 trackpad and touchscreen controllers
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employ projected-capacitance sensing and can track up to five independent
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contacts.
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Link to datasheet: https://www.azoteq.com/
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allOf:
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- $ref: touchscreen.yaml#
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properties:
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compatible:
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enum:
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- azoteq,iqs550
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- azoteq,iqs572
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- azoteq,iqs525
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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reset-gpios:
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maxItems: 1
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wakeup-source: true
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touchscreen-size-x: true
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touchscreen-size-y: true
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touchscreen-inverted-x: true
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touchscreen-inverted-y: true
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touchscreen-swapped-x-y: true
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required:
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- compatible
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- reg
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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touchscreen@74 {
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compatible = "azoteq,iqs550";
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reg = <0x74>;
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interrupt-parent = <&gpio>;
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interrupts = <27 IRQ_TYPE_LEVEL_HIGH>;
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reset-gpios = <&gpio 22 (GPIO_ACTIVE_LOW |
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GPIO_PUSH_PULL)>;
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touchscreen-size-x = <800>;
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touchscreen-size-y = <480>;
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};
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};
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...
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@ -1,80 +0,0 @@
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Azoteq IQS550/572/525 Trackpad/Touchscreen Controller
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Required properties:
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- compatible : Must be equal to one of the following:
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"azoteq,iqs550"
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"azoteq,iqs572"
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"azoteq,iqs525"
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- reg : I2C slave address for the device.
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- interrupts : GPIO to which the device's active-high RDY
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output is connected (see [0]).
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- reset-gpios : GPIO to which the device's active-low NRST
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input is connected (see [1]).
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Optional properties:
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- touchscreen-min-x : See [2].
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- touchscreen-min-y : See [2].
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- touchscreen-size-x : See [2]. If this property is omitted, the
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maximum x-coordinate is specified by the
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device's "X Resolution" register.
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- touchscreen-size-y : See [2]. If this property is omitted, the
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maximum y-coordinate is specified by the
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device's "Y Resolution" register.
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- touchscreen-max-pressure : See [2]. Pressure is expressed as the sum of
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the deltas across all channels impacted by a
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touch event. A channel's delta is calculated
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as its count value minus a reference, where
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the count value is inversely proportional to
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the channel's capacitance.
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- touchscreen-fuzz-x : See [2].
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- touchscreen-fuzz-y : See [2].
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- touchscreen-fuzz-pressure : See [2].
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- touchscreen-inverted-x : See [2]. Inversion is applied relative to that
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which may already be specified by the device's
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FLIP_X and FLIP_Y register fields.
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- touchscreen-inverted-y : See [2]. Inversion is applied relative to that
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which may already be specified by the device's
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FLIP_X and FLIP_Y register fields.
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- touchscreen-swapped-x-y : See [2]. Swapping is applied relative to that
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which may already be specified by the device's
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SWITCH_XY_AXIS register field.
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[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
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[1]: Documentation/devicetree/bindings/gpio/gpio.txt
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[2]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
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Example:
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&i2c1 {
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/* ... */
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touchscreen@74 {
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compatible = "azoteq,iqs550";
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reg = <0x74>;
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interrupt-parent = <&gpio>;
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interrupts = <17 4>;
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reset-gpios = <&gpio 27 1>;
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touchscreen-size-x = <640>;
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touchscreen-size-y = <480>;
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touchscreen-max-pressure = <16000>;
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};
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/* ... */
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};
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