The AD7768-1 ADC exports four bidirectional GPIOs accessible
via register map.

Document GPIO properties necessary to enable GPIO controller for this
device.

Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
---
v2 Changes:
* New patch in v2.
---
 .../devicetree/bindings/iio/adc/adi,ad7768-1.yaml      | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
index 3e119cf1754b..da05c8448530 100644
--- a/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml
@@ -72,6 +72,14 @@ properties:
   "#trigger-source-cells":
     const: 0
 
+  gpio-controller: true
+
+  "#gpio-cells":
+    const: 2
+    description: |
+      The first cell is for the GPIO number: 0 to 3.
+      The second cell takes standard GPIO flags.
+
 required:
   - compatible
   - reg
@@ -121,6 +129,8 @@ examples:
             spi-max-frequency = <2000000>;
             spi-cpol;
             spi-cpha;
+            gpio-controller;
+            #gpio-cells = <2>;
             vref-supply = <&adc_vref>;
             interrupts = <25 IRQ_TYPE_EDGE_RISING>;
             interrupt-parent = <&gpio>;
-- 
2.34.1

On Mon, 27 Jan 2025 12:11:44 -0300, Jonathan Santos wrote:
> The AD7768-1 ADC exports four bidirectional GPIOs accessible
> via register map.
> 
> Document GPIO properties necessary to enable GPIO controller for this
> device.
> 
> Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
> ---
> v2 Changes:
> * New patch in v2.
> ---
>  .../devicetree/bindings/iio/adc/adi,ad7768-1.yaml      | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>

On Mon, 27 Jan 2025 12:11:44 -0300, Jonathan Santos wrote:
> The AD7768-1 ADC exports four bidirectional GPIOs accessible
> via register map.
> 
> Document GPIO properties necessary to enable GPIO controller for this
> device.
> 
> Signed-off-by: Jonathan Santos <Jonathan.Santos@analog.com>
> ---
> v2 Changes:
> * New patch in v2.
> ---
>  .../devicetree/bindings/iio/adc/adi,ad7768-1.yaml      | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 

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

yamllint warnings/errors:
./Documentation/devicetree/bindings/iio/adc/adi,ad7768-1.yaml:92:6: [error] missing starting space in comment (comments)

dtschema/dtc warnings/errors:

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/dc866cb508917828f83242f3438dd1d6ac9d874c.1737985435.git.Jonathan.Santos@analog.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.