linux-kernel - Re: [PATCH v4 3/4] dt-bindings: HID: i2c-hid: Introduce bindings for the Goodix GT7375P

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Date:   Thu, 5 Nov 2020 16:34:21 -0600
From:   Rob Herring <robh@...nel.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     jkosina@...e.cz, benjamin.tissoires@...hat.com,
        gregkh@...uxfoundation.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org, swboyd@...omium.org,
        andrea@...gia.bo.it, kai.heng.feng@...onical.com,
        hdegoede@...hat.com, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 3/4] dt-bindings: HID: i2c-hid: Introduce bindings for
 the Goodix GT7375P

On Tue, Nov 03, 2020 at 05:29:28PM -0800, Douglas Anderson wrote:
> This adds new bindings for the Goodix GT7375P touchscreen.  While this
> touchscreen's communications are based on the generic "i2c-over-hid"
> protocol, it needs special power sequencing and thus gets its own
> compatible and bindings.

'dt-bindings: input: ...' for the subject.

> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
> 
> (no changes since v3)
> 
> Changes in v3:
> - Removed Benjamin as a maintainer.
> - Fixed compatible in example.
> - Updated description.
> 
> Changes in v2:
> - ("dt-bindings: HID: i2c-hid: Introduce bindings for the Goodix GT7375P") new in v2.
> 
>  .../bindings/input/goodix,gt7375p.yaml        | 63 +++++++++++++++++++
>  1 file changed, 63 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..15a38516e594
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/goodix,gt7375p.yaml
> @@ -0,0 +1,63 @@
> +# 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:
> +  - Douglas Anderson <dianders@...omium.org>
> +
> +description:
> +  Supports the Goodix GT7375P touchscreen.

Perhaps mention hid over i2c here given that's only captured in the 
commit message.

With those nits addressed.

Reviewed-by: Rob Herring <robh@...nel.org>

> +
> +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 = "goodix,gt7375p";
> +        reg = <0x5d>;
> +
> +        interrupt-parent = <&tlmm>;
> +        interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
> +
> +        reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
> +        vdd-supply = <&pp3300_ts>;
> +      };
> +    };
> -- 
> 2.29.1.341.ge80a0c044ae-goog
>