Hi Krzysztof,
Thank you very much for your advice.

On Thu, Sep 26, 2024 at 02:32:05PM +0200, Krzysztof Kozlowski wrote:

On 26/09/2024 11:57, Charles Wang wrote:

quoted

quoted

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 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@gmail.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

This seems a little different from the adxl313.yaml.

The issue we're encountering involves the chip model gt7986u,
which supports both I2C and SPI interfaces. For the I2C interface
(using the HID-over-I2C driver), it has already been declared in
the goodix,gt7375p.yaml file as follows:

i2c {
  #address-cells = <1>;
  #size-cells = <0>;

  ap_ts: touchscreen@5d {
    compatible = "goodix,gt7986u";
  }
}

Currently, our design requires utilizing the SPI interface with
a custom SPI driver. However, the declarations within the binding
file have led to conflicts, as shown here:

spi {
  #address-cells = <1>;
  #size-cells = <0>;

  touchscreen@0 {
    compatible = "goodix,gt7986u";
  }
}

Should I consider merging both YAML files into a single one to fix this?

Best regards!
Charles