linux-kernel - Re: [PATCH v4 1/2] dt-bindings: HID: i2c-hid: ilitek: Introduce bindings for Ilitek ili9882t

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Message-ID: <CAD=FV=VTvZZA=AenE5vFMtrUVqLAp+RZMoZFU5t7R6tNpvnvjQ@mail.gmail.com>
Date:   Thu, 8 Jun 2023 06:37:06 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Cong Yang <yangcong5@...qin.corp-partner.google.com>
Cc:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, dmitry.torokhov@...il.com, jikos@...nel.org,
        benjamin.tissoires@...hat.com, hsinyi@...gle.com,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/2] dt-bindings: HID: i2c-hid: ilitek: Introduce
 bindings for Ilitek ili9882t

Hi,

On Thu, Jun 8, 2023 at 6:02 AM Cong Yang
<yangcong5@...qin.corp-partner.google.com> wrote:
>
> @@ -0,0 +1,66 @@
> +# 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:
> +  - Dmitry Torokhov <dmitry.torokhov@...il.com>

Has Dmitry agreed to be the maintainer here? Traditionally when adding
a new file one lists themselves.


> +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.

Why two blank lines between reset-gpios and vccio-supply?


> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - vccio-supply

I think you want "panel" as a required property too, right?


> +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>;
> +
> +        reset-gpios = <&pio 60 GPIO_ACTIVE_LOW>;
> +        vccio-supply = <&mt6366_vio18_reg>;

...and "panel" would also need to go in the above example.