linux-kernel - Re: [PATCH v2 2/3] dt-bindings: HID: i2c-hid: Introduce bindings for the Goodix GT7375P

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Date:   Fri, 30 Oct 2020 11:52:07 +0100
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Jiri Kosina <jkosina@...e.cz>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        andrea@...gia.bo.it, Kai Heng Feng <kai.heng.feng@...onical.com>,
        "open list:HID CORE LAYER" <linux-input@...r.kernel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Hans De Goede <hdegoede@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        DTML <devicetree@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/3] dt-bindings: HID: i2c-hid: Introduce bindings for
 the Goodix GT7375P

Hi Doug,

On Sat, Oct 24, 2020 at 1:23 AM Douglas Anderson <dianders@...omium.org> wrote:
>
> This adds new bindings for the Goodix GT7375P touchscreen.  While this
> touchscreen works with generic "i2c-over-hid", the current advice is
> to give it its own compatible string.  The cleanest way to do this is
> to give it its own bindings.
>
> Among other things, this has the advantage that we can list the two
> possible i2c addresses for this device, which gives extra checking.
>
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
>
> Changes in v2:
> - ("dt-bindings: HID: i2c-hid: Introduce bindings for the Goodix GT7375P") new in v2.
>
>  .../bindings/input/goodix,gt7375p.yaml        | 64 +++++++++++++++++++
>  1 file changed, 64 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
>
> diff --git a/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
> new file mode 100644
> index 000000000000..b5008f89e26c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
> @@ -0,0 +1,64 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/goodix,gt7375p.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Goodix GT7375P touchscreen
> +
> +maintainers:
> +  - Benjamin Tissoires <benjamin.tissoires@...hat.com>

Given my answer in patch 1, I am not very happy being added as a
maintainer here.

Cheers,
Benjamin


> +  - Douglas Anderson <dianders@...omium.org>
> +
> +description:
> +  Supports the Goodix GT7375P touchscreen.
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: goodix,gt7375p
> +
> +  reg:
> +    enum:
> +      - 0x5d
> +      - 0x14
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    true
> +
> +  vdd-supply:
> +    description: The 3.3V supply to the touchscreen.
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - reset-gpios
> +  - vdd-supply
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,rpmh.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      ap_ts: touchscreen@5d {
> +        compatible = "hid-over-i2c";
> +        reg = <0x5d>;
> +
> +        interrupt-parent = <&tlmm>;
> +        interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
> +
> +        reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
> +        vdd-supply = <&pp3300_ts>;
> +      };
> +    };
> --
> 2.29.0.rc1.297.gfa9743e501-goog
>