[PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[Charles Wang]

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.

NOTE: these bindings are distinct from the bindings used with the
GT7986U when the chip is running I2C firmware. For some background,
see discussion on the mailing lists in the thread:

https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com

Signed-off-by: Charles Wang <charles.goodix@gmail.com>
---
 .../bindings/input/goodix,gt7986u-spifw.yaml  | 75 +++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml

diff --git a/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml b/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
new file mode 100644
index 000000000..8105b9ce2
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/goodix,gt7986u-spifw.yaml#
+$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
+  over the SPI bus, but it is incompatible with Microsoft's HID-over-SPI protocol.
+
+  NOTE: these bindings are distinct from the bindings used with the
+  GT7986U when the chip is running I2C firmware. This is because there's
+  not a single device that talks over both I2C and SPI but rather
+  distinct touchscreens that happen to be built with the same ASIC but
+  that are distinct products running distinct firmware.
+
+allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    enum:
+      - goodix,gt7986u-spifw
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  reset-gpios:
+    maxItems: 1
+
+  goodix,hid-report-addr:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      The register address for retrieving HID report data.
+
+  spi-max-frequency: true
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - reset-gpios
+  - goodix,hid-report-addr
+
+unevaluatedProperties: false
+
+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-spifw";
+        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 v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[Rob Herring (Arm)]

On Fri, 08 Nov 2024 20:03:10 +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.
> 
> NOTE: these bindings are distinct from the bindings used with the
> GT7986U when the chip is running I2C firmware. For some background,
> see discussion on the mailing lists in the thread:
> 
> https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com
> 
> Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> ---
>  .../bindings/input/goodix,gt7986u-spifw.yaml  | 75 +++++++++++++++++++
>  1 file changed, 75 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:
./Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml:16:7: [error] syntax error: mapping values are not allowed here (syntax)

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml: ignoring, error parsing file
./Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml:16:7: mapping values are not allowed in this context
make[2]: *** Deleting file 'Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.example.dts'
Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml:16:7: mapping values are not allowed in this context
make[2]: *** [Documentation/devicetree/bindings/Makefile:26: Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.example.dts] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/builds/robherring/dt-review-ci/linux/Makefile:1442: dt_binding_check] Error 2
make: *** [Makefile:224: __sub-make] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20241108120311.87795-2-charles.goodix@gmail.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

Re: [PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[Doug Anderson]

Hi,

On Fri, Nov 8, 2024 at 5:33 AM Rob Herring (Arm) <robh@kernel.org> wrote:
>
>
> On Fri, 08 Nov 2024 20:03:10 +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.
> >
> > NOTE: these bindings are distinct from the bindings used with the
> > GT7986U when the chip is running I2C firmware. For some background,
> > see discussion on the mailing lists in the thread:
> >
> > https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com
> >
> > Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> > ---
> >  .../bindings/input/goodix,gt7986u-spifw.yaml  | 75 +++++++++++++++++++
> >  1 file changed, 75 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> >
>
> My bot found errors running 'make dt_binding_check' on your patch:
>
> yamllint warnings/errors:
> ./Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml:16:7: [error] syntax error: mapping values are not allowed here (syntax)

FWIW, I think it's objecting to the "NOTE: " in the description
looking like yaml. Maybe just change it to "Note that". It's also a
good idea to get yourself setup to validate your bindings _before_
posting them to the list.

-Doug

Re: [PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[Rob Herring]

On Fri, Nov 08, 2024 at 08:03:10PM +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.
> 
> NOTE: these bindings are distinct from the bindings used with the
> GT7986U when the chip is running I2C firmware. For some background,
> see discussion on the mailing lists in the thread:
> 
> https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com
> 
> Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> ---
>  .../bindings/input/goodix,gt7986u-spifw.yaml  | 75 +++++++++++++++++++
>  1 file changed, 75 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml b/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> new file mode 100644
> index 000000000..8105b9ce2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> @@ -0,0 +1,75 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/goodix,gt7986u-spifw.yaml#
> +$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.

Move to next line.

> +  This touch controller reports data packaged according to the HID protocol
> +  over the SPI bus, but it is incompatible with Microsoft's HID-over-SPI protocol.
> +

If you want to maintain paragraphs you need '>' or '|' after 
'description:'. IIRC, it has to be '|' due to the "NOTE: " here:

> +  NOTE: these bindings are distinct from the bindings used with the
> +  GT7986U when the chip is running I2C firmware. This is because there's
> +  not a single device that talks over both I2C and SPI but rather
> +  distinct touchscreens that happen to be built with the same ASIC but
> +  that are distinct products running distinct firmware.
> +
> +allOf:
> +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - goodix,gt7986u-spifw
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +
> +  goodix,hid-report-addr:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      The register address for retrieving HID report data.
> +
> +  spi-max-frequency: true
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - reset-gpios
> +  - goodix,hid-report-addr
> +
> +unevaluatedProperties: false
> +
> +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-spifw";
> +        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 v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[kernel test robot]

:::::: 
:::::: Manual check reason: "dtcheck: binding changes may go via different trees"
:::::: 

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
In-Reply-To: <20241108120311.87795-2-charles.goodix@gmail.com>
References: <20241108120311.87795-2-charles.goodix@gmail.com>
TO: Charles Wang <charles.goodix@gmail.com>
TO: krzk@kernel.org
TO: hbarnor@chromium.org
TO: dianders@chromium.org
TO: conor.dooley@microchip.com
CC: dmitry.torokhov@gmail.com
CC: jikos@kernel.org
CC: bentiss@kernel.org
CC: linux-input@vger.kernel.org
CC: devicetree@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: Charles Wang <charles.goodix@gmail.com>

Hi Charles,

kernel test robot noticed the following build warnings:

[auto build test WARNING on dtor-input/next]
[also build test WARNING on dtor-input/for-linus krzk-dt/for-next linus/master v6.12-rc6 next-20241108]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Charles-Wang/dt-bindings-input-Goodix-GT7986U-SPI-HID-Touchscreen/20241108-200454
base:   https://git.kernel.org/pub/scm/linux/kernel/git/dtor/input.git next
patch link:    https://lore.kernel.org/r/20241108120311.87795-2-charles.goodix%40gmail.com
patch subject: [PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen
:::::: branch date: 5 hours ago
:::::: commit date: 5 hours ago
config: csky-randconfig-051-20241109 (https://download.01.org/0day-ci/archive/20241109/202411090145.eCFPadBI-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 14.2.0
dtschema version: 2024.10.dev6+g12c3cd5
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241109/202411090145.eCFPadBI-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202411090145.eCFPadBI-lkp@intel.com/

dtcheck warnings: (new ones prefixed by >>)
>> Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml: ignoring, error parsing file
   Warning: Duplicate compatible "pericom,pt7c4338" found in schemas matching "$id":
   	http://devicetree.org/schemas/rtc/trivial-rtc.yaml#
   	http://devicetree.org/schemas/rtc/rtc-ds1307.yaml#
   Warning: Duplicate compatible "epson,rx8025" found in schemas matching "$id":
   	http://devicetree.org/schemas/rtc/trivial-rtc.yaml#
   	http://devicetree.org/schemas/rtc/rtc-ds1307.yaml#
   Warning: Duplicate compatible "isil,isl1208" found in schemas matching "$id":
   	http://devicetree.org/schemas/rtc/trivial-rtc.yaml#
   	http://devicetree.org/schemas/rtc/isil,isl1208.yaml#
   Warning: Duplicate compatible "isil,isl1218" found in schemas matching "$id":

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

Re: [PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[Charles Wang]

Hi Doug,

On Fri, Nov 08, 2024 at 07:13:53AM -0800, Doug Anderson wrote:
> Hi,
> 
> On Fri, Nov 8, 2024 at 5:33 AM Rob Herring (Arm) <robh@kernel.org> wrote:
> >
> >
> > On Fri, 08 Nov 2024 20:03:10 +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.
> > >
> > > NOTE: these bindings are distinct from the bindings used with the
> > > GT7986U when the chip is running I2C firmware. For some background,
> > > see discussion on the mailing lists in the thread:
> > >
> > > https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com
> > >
> > > Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> > > ---
> > >  .../bindings/input/goodix,gt7986u-spifw.yaml  | 75 +++++++++++++++++++
> > >  1 file changed, 75 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> > >
> >
> > My bot found errors running 'make dt_binding_check' on your patch:
> >
> > yamllint warnings/errors:
> > ./Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml:16:7: [error] syntax error: mapping values are not allowed here (syntax)
> 
> FWIW, I think it's objecting to the "NOTE: " in the description
> looking like yaml. Maybe just change it to "Note that". It's also a
> good idea to get yourself setup to validate your bindings _before_
> posting them to the list.
> 

Change to 'description: |' fixed the issue.

Thanks,
Charles

Re: [PATCH v3 1/2] dt-bindings: input: Goodix GT7986U SPI HID Touchscreen

[Charles Wang]

Hi Rob,

On Fri, Nov 08, 2024 at 10:10:00AM -0600, Rob Herring wrote:
> On Fri, Nov 08, 2024 at 08:03:10PM +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.
> > 
> > NOTE: these bindings are distinct from the bindings used with the
> > GT7986U when the chip is running I2C firmware. For some background,
> > see discussion on the mailing lists in the thread:
> > 
> > https://lore.kernel.org/r/20241018020815.3098263-2-charles.goodix@gmail.com
> > 
> > Signed-off-by: Charles Wang <charles.goodix@gmail.com>
> > ---
> >  .../bindings/input/goodix,gt7986u-spifw.yaml  | 75 +++++++++++++++++++
> >  1 file changed, 75 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml b/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> > new file mode 100644
> > index 000000000..8105b9ce2
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/input/goodix,gt7986u-spifw.yaml
> > @@ -0,0 +1,75 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/input/goodix,gt7986u-spifw.yaml#
> > +$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.
> 
> Move to next line.
> 

Ack,

>
> > +  This touch controller reports data packaged according to the HID protocol
> > +  over the SPI bus, but it is incompatible with Microsoft's HID-over-SPI protocol.
> > +
> 
> If you want to maintain paragraphs you need '>' or '|' after 
> 'description:'. IIRC, it has to be '|' due to the "NOTE: " here:
> 

Ack, using '|' works.

Best regars,
Charles

>
> > +  NOTE: these bindings are distinct from the bindings used with the
> > +  GT7986U when the chip is running I2C firmware. This is because there's
> > +  not a single device that talks over both I2C and SPI but rather
> > +  distinct touchscreens that happen to be built with the same ASIC but
> > +  that are distinct products running distinct firmware.
> > +
> > +allOf:
> > +  - $ref: /schemas/spi/spi-peripheral-props.yaml#
> > +
> > +properties:
> > +  compatible:
> > +    enum:
> > +      - goodix,gt7986u-spifw
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> > +    maxItems: 1
> > +
> > +  reset-gpios:
> > +    maxItems: 1
> > +
> > +  goodix,hid-report-addr:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description:
> > +      The register address for retrieving HID report data.
> > +
> > +  spi-max-frequency: true
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - interrupts
> > +  - reset-gpios
> > +  - goodix,hid-report-addr
> > +
> > +unevaluatedProperties: false
> > +
> > +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-spifw";
> > +        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
> >