Re: [PATCH v2 1/2] dt-bindings: iio: imu: add fxos8700 imu binding

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On Wed, Oct 9, 2019 at 8:25 PM Robert Jones <rjones@xxxxxxxxxxxxx> wrote:
>
> This adds documentation for the Freescale FXOS8700 Inertial Measurement Unit
> device-tree bindings.
>
> Signed-off-by: Robert Jones <rjones@xxxxxxxxxxxxx>
> ---
>  .../devicetree/bindings/iio/imu/fxos8700.yaml      | 54 ++++++++++++++++++++++

Follow the compatible string name, so fsl,fxos8700.yaml.

>  1 file changed, 54 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/iio/imu/fxos8700.yaml
>
> diff --git a/Documentation/devicetree/bindings/iio/imu/fxos8700.yaml b/Documentation/devicetree/bindings/iio/imu/fxos8700.yaml
> new file mode 100644
> index 0000000..f0dbf4b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/iio/imu/fxos8700.yaml
> @@ -0,0 +1,54 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/iio/imu/fxos8700.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale FXOS8700 Inertial Measurement Unit
> +
> +maintainers:
> +  - Robert Jones <rjones@xxxxxxxxxxxxx>
> +
> +description: |
> +  Accelerometer and magnetometer combo device with an i2c interface.

Also has a SPI interface.

> +  https://www.nxp.com/products/sensors/motion-sensors/6-axis/digital-motion-sensor-3d-accelerometer-2g-4g-8g-plus-3d-magnetometer:FXOS8700CQ
> +
> +properties:
> +  compatible:
> +    enum:
> +      - fsl,fxos8700

For a new binding, shouldn't this be nxp instead of fsl?

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  interrupt-names:
> +    maxItems: 1

'const: INT1' instead. However, having '-names' doesn't really buy
much when there is only 1 entry, so I'd just drop it.

But then I read the datasheet and there are 2 interrupts, so you need
to describe 2 interrupts.

> +
> +  drive-open-drain:
> +    maxItems: 1

Should be boolean.

> +
> +  spi-max-frequency:
> +    maxItems: 1

spi-max-frequency is not an array. You should define the maximum for it.

> +
> +required:
> +  - compatible
> +  - reg
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        fxos8700@1e {
> +          compatible = "fsl,fxos8700";
> +          reg = <0x1e>;
> +
> +          interrupt-parent = <&gpio2>;
> +          interrupts = <7 IRQ_TYPE_EDGE_RISING>;
> +          interrupt-names = "INT1";
> +        };
> +    };
> --
> 2.9.2
>



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