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Input: mms114 - convert bindings to YAML and extend
This converts the Melfas MMS114 bindings and extend like this: - Require nodename touchscreen@ (this seems to be the case for all in-tree DTS files) - Add the mms134s and mms136 compatibles - Add the avdd and vdd power supplies - Define the I2C clock frequency property Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210330201233.2360006-1-linus.walleij@linaro.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/input/touchscreen/melfas,mms114.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Melfas MMS114 family touchscreen controller bindings
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maintainers:
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- Linus Walleij <linus.walleij@linaro.org>
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allOf:
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- $ref: touchscreen.yaml#
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properties:
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$nodename:
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pattern: "^touchscreen(@.*)?$"
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compatible:
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items:
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- enum:
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- melfas,mms114
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- melfas,mms134s
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- melfas,mms136
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- melfas,mms152
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- melfas,mms345l
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reg:
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description: I2C address
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clock-frequency:
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description: I2C client clock frequency, defined for host
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minimum: 100000
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maximum: 400000
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interrupts:
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maxItems: 1
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avdd-supply:
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description: Analog power supply regulator on AVDD pin
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vdd-supply:
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description: Digital power supply regulator on VDD pin
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touchscreen-size-x: true
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touchscreen-size-y: true
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touchscreen-fuzz-x: true
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touchscreen-fuzz-y: true
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touchscreen-fuzz-pressure: 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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touchscreen-max-pressure: true
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additionalProperties: false
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required:
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- compatible
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- reg
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- interrupts
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- touchscreen-size-x
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- touchscreen-size-y
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examples:
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- |
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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@48 {
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compatible = "melfas,mms114";
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reg = <0x48>;
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interrupt-parent = <&gpio>;
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interrupts = <39 IRQ_TYPE_EDGE_FALLING>;
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avdd-supply = <&ldo1_reg>;
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vdd-supply = <&ldo2_reg>;
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touchscreen-size-x = <720>;
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touchscreen-size-y = <1280>;
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touchscreen-fuzz-x = <10>;
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touchscreen-fuzz-y = <10>;
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touchscreen-fuzz-pressure = <10>;
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touchscreen-inverted-x;
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touchscreen-inverted-y;
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};
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};
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...
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* MELFAS MMS114/MMS152/MMS345L touchscreen controller
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Required properties:
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- compatible: should be one of:
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- "melfas,mms114"
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- "melfas,mms152"
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- "melfas,mms345l"
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- reg: I2C address of the chip
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- interrupts: interrupt to which the chip is connected
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- touchscreen-size-x: See [1]
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- touchscreen-size-y: See [1]
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Optional properties:
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- touchscreen-fuzz-x: See [1]
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- touchscreen-fuzz-y: See [1]
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- touchscreen-fuzz-pressure: See [1]
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- touchscreen-inverted-x: See [1]
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- touchscreen-inverted-y: See [1]
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- touchscreen-swapped-x-y: See [1]
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[1]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
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Example:
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i2c@00000000 {
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/* ... */
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touchscreen@48 {
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compatible = "melfas,mms114";
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reg = <0x48>;
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interrupts = <39 0>;
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touchscreen-size-x = <720>;
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touchscreen-size-y = <1280>;
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touchscreen-fuzz-x = <10>;
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touchscreen-fuzz-y = <10>;
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touchscreen-fuzz-pressure = <10>;
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touchscreen-inverted-x;
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touchscreen-inverted-y;
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};
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/* ... */
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};
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