Commit 86a7d13c authored by Chris Morgan's avatar Chris Morgan Committed by Dmitry Torokhov
Browse files

dt-bindings: input: touchscreen: Add Hynitron cstxxx 



Add documentation for the Hynitron cstxxx touchscreen bindings.
Hynitron makes a series of touchscreen controllers, however for
now this is expected to only be compatible with the cst3xx series,
specifically the CST340, CST348, and CST356.

Signed-off-by: default avatarChris Morgan <macromorgan@hotmail.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221028202636.14341-3-macroalpha82@gmail.com


Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 537187c8

Documentation/devicetree/bindings/input/touchscreen/hynitron,cstxxx.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/input/touchscreen/hynitron,cstxxx.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: Hynitron cstxxx series touchscreen controller



description: |

  Bindings for Hynitron cstxxx series multi-touch touchscreen

  controllers.



maintainers:

  - Chris Morgan <macromorgan@hotmail.com>



allOf:

  - $ref: touchscreen.yaml#



properties:

  compatible:

    enum:

      - hynitron,cst340



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  reset-gpios:

    maxItems: 1



  touchscreen-size-x: true

  touchscreen-size-y: true

  touchscreen-inverted-x: true

  touchscreen-inverted-y: true

  touchscreen-swapped-x-y: true



additionalProperties: false



required:

  - compatible

  - reg

  - interrupts

  - reset-gpios



examples:

  - |

    #include <dt-bindings/gpio/gpio.h>

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    i2c {

      #address-cells = <1>;

      #size-cells = <0>;

      touchscreen@1a {

        compatible = "hynitron,cst340";

        reg = <0x1a>;

        interrupt-parent = <&gpio4>;

        interrupts = <9 IRQ_TYPE_EDGE_FALLING>;

        reset-gpios = <&gpio4 6 GPIO_ACTIVE_LOW>;

        touchscreen-size-x = <640>;

        touchscreen-size-y = <480>;

      };

    };



...