Commit 7d3b0d9e authored by Cong Yang's avatar Cong Yang Committed by Benjamin Tissoires
Browse files

dt-bindings: input: i2c-hid: Introduce Ilitek ili9882t 

The ili9882t touch screen chip same as Elan eKTH6915 controller
has a reset gpio. The difference is that ili9882t needs to use
vccio-supply instead of vcc33-supply. Doug's series[1] allows panels
and touchscreens to power on/off together, let's add a phandle for this.

[1]: https://lore.kernel.org/r/20230607215224.2067679-1-dianders@chromium.org



Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: default avatarCong Yang <yangcong5@huaqin.corp-partner.google.com>
Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20230802071947.1683318-2-yangcong5@huaqin.corp-partner.google.com


Signed-off-by: default avatarBenjamin Tissoires <bentiss@kernel.org>
parent 1d754604

Documentation/devicetree/bindings/input/ilitek,ili9882t.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/ilitek,ili9882t.yaml#

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



title: Ilitek ili9882t touchscreen controller



maintainers:

  - Cong Yang <yangcong5@huaqin.corp-partner.google.com>



description:

  Supports the Ilitek ili9882t touchscreen controller.

  This touchscreen controller uses the i2c-hid protocol with a reset GPIO.



allOf:

  - $ref: /schemas/input/touchscreen/touchscreen.yaml#



properties:

  compatible:

    const: ilitek,ili9882t



  reg:

    const: 0x41



  interrupts:

    maxItems: 1



  panel: true



  reset-gpios:

    maxItems: 1

    description: Reset GPIO.



  vccio-supply:

    description: The 1.8V supply to the touchscreen.



required:

  - compatible

  - reg

  - interrupts

  - panel

  - vccio-supply



additionalProperties: false



examples:

  - |

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

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



    i2c {

      #address-cells = <1>;

      #size-cells = <0>;



      touchscreen: touchscreen@41 {

        compatible = "ilitek,ili9882t";

        reg = <0x41>;



        interrupt-parent = <&pio>;

        interrupts = <12 IRQ_TYPE_LEVEL_LOW>;



        panel = <&panel>;

        reset-gpios = <&pio 60 GPIO_ACTIVE_LOW>;

        vccio-supply = <&mt6366_vio18_reg>;

      };

    };