Re: [PATCH 1/2] dt-bindings: iio: imu: icm42600: add interrupt naming support

[Jonathan Cameron <Jonathan.Cameron@huawei.com>]

On Fri, 04 Apr 2025 17:52:02 +0200
Jean-Baptiste Maneyrol via B4 Relay <devnull+jean-baptiste.maneyrol.tdk.com@kernel.org> wrote:

> From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
> 
> Add interrupt-names field for specifying interrupt used.
> Only INT1 is supported by the driver currently.
No SoB?

Also, these are tricky to retrofit.  Arguably this is a binding
fix because there was not documentation to see the interrupt was INT1,
so perhaps we don't need to care in the binding (beyond adding that
INT2 is valid as well).

However we don't want the driver to fail on DT out in the field so
we need to fallback to assuming that if the interrupt name is not supplied
we just grab the one interrupt there and assume it is INT1.

Jonathan

> ---
>  .../devicetree/bindings/iio/imu/invensense,icm42600.yaml          | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
> index 7e4492bbd0278a336587dc5ac04da7153453da29..f19cdfd7450e04e7c984dc987f3c23f5ad89a248 100644
> --- a/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
> +++ b/Documentation/devicetree/bindings/iio/imu/invensense,icm42600.yaml
> @@ -41,6 +41,12 @@ properties:
>    interrupts:
>      maxItems: 1
>  
> +  interrupt-names:
> +    enum:
> +      - INT1
> +    description: |
> +      set to "INT1" the only supported interrupts pin
> +
>    drive-open-drain:
>      type: boolean
>  
> @@ -76,6 +82,7 @@ examples:
>              reg = <0x68>;
>              interrupt-parent = <&gpio2>;
>              interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
> +            interrupt-names = "INT1";
>              vdd-supply = <&vdd>;
>              vddio-supply = <&vddio>;
>          };
> @@ -95,6 +102,7 @@ examples:
>              spi-cpol;
>              interrupt-parent = <&gpio1>;
>              interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
> +            interrupt-names = "INT1";
>              vdd-supply = <&vdd>;
>              vddio-supply = <&vddio>;
>          };
>