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[PATCH v5 2/2] dt-bindings: input: Goodix SPI HID Touchscreen

Charles Wang posted 2 patches 1 year, 6 months ago
There is a newer version of this series
[PATCH v5 2/2] dt-bindings: input: Goodix SPI HID Touchscreen
Posted by Charles Wang 1 year, 6 months ago 
The Goodix GT7986U touch controller report touch data according to the
HID protocol through the SPI bus. However, it is incompatible with
Microsoft's HID-over-SPI protocol.

Signed-off-by: Charles Wang <charles.goodix@gmail.com>
---
 .../bindings/input/goodix,gt7986u.yaml        | 72 +++++++++++++++++++
 1 file changed, 72 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..25a26b4ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
@@ -0,0 +1,72 @@
+# 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
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+    description: reset gpio the chip is connected to.
+
+  goodix,hid-report-addr:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: |
+      The register address for retrieving HID report data.
+      This address is related to the device firmware and may
+      change after a firmware update.
+
+  spi-max-frequency: true
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - reset-gpios
+  - goodix,hid-report-addr
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/gpio/gpio.h>
+
+    spi {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      touchscreen@0 {
+        compatible = "goodix,gt7986u";
+        reg = <0>;
+        interrupt-parent = <&gpio>;
+        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
+        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
+        spi-max-frequency = <10000000>;
+        goodix,hid-report-addr = <0x22c8c>;
+      };
+    };
+
+...
-- 
2.43.0
Re: [PATCH v5 2/2] dt-bindings: input: Goodix SPI HID Touchscreen
Posted by Conor Dooley 1 year, 6 months ago 
On Tue, Jun 18, 2024 at 04:44:54PM +0800, Charles Wang wrote:
> The Goodix GT7986U touch controller report touch data according to the
> HID protocol through the SPI bus. However, it is incompatible with
> Microsoft's HID-over-SPI protocol.
> 
> Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> ---
>  .../bindings/input/goodix,gt7986u.yaml        | 72 +++++++++++++++++++
>  1 file changed, 72 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
> new file mode 100644
> index 000000000..25a26b4ce
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
> @@ -0,0 +1,72 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$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
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +    description: reset gpio the chip is connected to.

The description here isn't needed, it's obvious :)

> +  goodix,hid-report-addr:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: |

This | is not needed, there's no formatting to preserve.

Those are nits:
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>

Thanks,
Conor.

> +      The register address for retrieving HID report data.
> +      This address is related to the device firmware and may
> +      change after a firmware update.
> +
> +  spi-max-frequency: true
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - reset-gpios
> +  - goodix,hid-report-addr
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/gpio/gpio.h>
> +
> +    spi {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      touchscreen@0 {
> +        compatible = "goodix,gt7986u";
> +        reg = <0>;
> +        interrupt-parent = <&gpio>;
> +        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
> +        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
> +        spi-max-frequency = <10000000>;
> +        goodix,hid-report-addr = <0x22c8c>;
> +      };
> +    };
> +
> +...
> -- 
> 2.43.0
>
Re: [PATCH v5 2/2] dt-bindings: input: Goodix SPI HID Touchscreen
Posted by Charles Wang 1 year, 6 months ago 
Hi Conor,

On Tue, Jun 18, 2024 at 06:43:18PM +0100, Conor Dooley wrote:
> On Tue, Jun 18, 2024 at 04:44:54PM +0800, Charles Wang wrote:
> > The Goodix GT7986U touch controller report touch data according to the
> > HID protocol through the SPI bus. However, it is incompatible with
> > Microsoft's HID-over-SPI protocol.
> > 
> > Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> > ---
> >  .../bindings/input/goodix,gt7986u.yaml        | 72 +++++++++++++++++++
> >  1 file changed, 72 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..25a26b4ce
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/input/goodix,gt7986u.yaml
> > @@ -0,0 +1,72 @@
> > +# 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
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  reset-gpios:
> > +    maxItems: 1
> > +    description: reset gpio the chip is connected to.
> 
> The description here isn't needed, it's obvious :)
>

Ack.

> > +  goodix,hid-report-addr:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description: |
> 
> This | is not needed, there's no formatting to preserve.
> 
> Those are nits:
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> 

Thank you. If there is a next version, I will fix these.

Charles,

> 
> > +      The register address for retrieving HID report data.
> > +      This address is related to the device firmware and may
> > +      change after a firmware update.
> > +
> > +  spi-max-frequency: true
> > +
> > +additionalProperties: false
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +  - reset-gpios
> > +  - goodix,hid-report-addr
> > +
> > +examples:
> > +  - |
> > +    #include <dt-bindings/interrupt-controller/irq.h>
> > +    #include <dt-bindings/gpio/gpio.h>
> > +
> > +    spi {
> > +      #address-cells = <1>;
> > +      #size-cells = <0>;
> > +
> > +      touchscreen@0 {
> > +        compatible = "goodix,gt7986u";
> > +        reg = <0>;
> > +        interrupt-parent = <&gpio>;
> > +        interrupts = <25 IRQ_TYPE_LEVEL_LOW>;
> > +        reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>;
> > +        spi-max-frequency = <10000000>;
> > +        goodix,hid-report-addr = <0x22c8c>;
> > +      };
> > +    };
> > +
> > +...
> > -- 
> > 2.43.0
> >
Re: [PATCH v5 2/2] dt-bindings: input: Goodix SPI HID Touchscreen
Posted by Conor Dooley 1 year, 6 months ago 
On Wed, Jun 19, 2024 at 10:16:50AM +0800, Charles Wang wrote:
> Hi Conor,
> 
> On Tue, Jun 18, 2024 at 06:43:18PM +0100, Conor Dooley wrote:
> > On Tue, Jun 18, 2024 at 04:44:54PM +0800, Charles Wang wrote:

> > > +  reset-gpios:
> > > +    maxItems: 1
> > > +    description: reset gpio the chip is connected to.
> > 
> > The description here isn't needed, it's obvious :)
> >
> 
> Ack.
> 
> > > +  goodix,hid-report-addr:
> > > +    $ref: /schemas/types.yaml#/definitions/uint32
> > > +    description: |
> > 
> > This | is not needed, there's no formatting to preserve.
> > 
> > Those are nits:
> > Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> > 
> 
> Thank you. If there is a next version, I will fix these.

Sounds good, thank you!

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