linux-kernel - Re: [PATCH v8 2/2] dt-bindings: input: Goodix SPI HID Touchscreen

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Message-ID: <87d49032-cb94-4cf8-a5e0-44eb2ec37111@kernel.org>
Date: Thu, 26 Sep 2024 14:32:05 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Charles Wang <charles.goodix@...il.com>
Cc: jikos@...nel.org, bentiss@...nel.org, hbarnor@...omium.org,
 linux-input@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v8 2/2] dt-bindings: input: Goodix SPI HID Touchscreen

On 26/09/2024 11:57, Charles Wang wrote:
>>>  1 file changed, 71 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
>>> new file mode 100644
>>> index 000000000..849117639
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
>>> @@ -0,0 +1,71 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/input/goodix,gt7986u.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: GOODIX GT7986U SPI HID Touchscreen
>>> +
>>> +maintainers:
>>> +  - Charles Wang <charles.goodix@...il.com>
>>> +
>>> +description: Supports the Goodix GT7986U touchscreen.
>>> +  This touch controller reports data packaged according to the HID protocol,
>>> +  but is incompatible with Microsoft's HID-over-SPI protocol.
>>> +
>>> +allOf:
>>> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
>>> +
>>> +properties:
>>> +  compatible:
>>> +    enum:
>>> +      - goodix,gt7986u-spi
>>
>> NAK, you duplicate again the binding. You cannot have bus-flavors.
>> Device is the same.
>>
> 
> Could you provide some suggestions regarding this issue?

What is exactly the question or problem? There is a binding for this
device. Extend it with SPI parts, e.g.
https://elixir.bootlin.com/linux/v6.4-rc7/source/Documentation/devicetree/bindings/iio/accel/adi,adxl313.yaml#L22

Best regards,
Krzysztof