Commit ed872cea authored by Sasha Finkelstein's avatar Sasha Finkelstein Committed by Dmitry Torokhov
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dt-bindings: input: touchscreen: Add Z2 controller 



Add bindings for touchscreen controllers attached using the Z2 protocol.
Those are present in most Apple devices.

Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: default avatarNeal Gompa <neal@gompa.dev>
Signed-off-by: default avatarSasha Finkelstein <fnkl.kernel@gmail.com>
Link: https://lore.kernel.org/r/20250217-z2-v6-1-c2115d6e5a8f@gmail.com


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent a7550ff5

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 <fnkl.kernel@gmail.com>



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>;

        };

    };



...