linux-kernel - Re: [PATCH v5 06/10] dt-bindings: iio: accel: add interrupt-names

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Message-ID: <20241205-fraying-overfull-4fe3eb6c5376@spud>
Date: Thu, 5 Dec 2024 17:53:57 +0000
From: Conor Dooley <conor@...nel.org>
To: Lothar Rubusch <l.rubusch@...il.com>
Cc: lars@...afoo.de, Michael.Hennerich@...log.com, jic23@...nel.org,
	robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
	devicetree@...r.kernel.org, linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org, eraretuya@...il.com
Subject: Re: [PATCH v5 06/10] dt-bindings: iio: accel: add interrupt-names

On Thu, Dec 05, 2024 at 05:13:39PM +0000, Lothar Rubusch wrote:
> Add interrupt-names INT1 and INT2 for the two interrupt lines of the
> sensor. Only one line will be connected for incoming events. The driver
> needs to be configured accordingly. If no interrupt line is set up, the
> sensor will still measure, but no events are possible.
> 
> Signed-off-by: Lothar Rubusch <l.rubusch@...il.com>
> ---
>  .../devicetree/bindings/iio/accel/adi,adxl345.yaml         | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml b/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
> index 280ed479ef5..67e2c029a6c 100644
> --- a/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
> +++ b/Documentation/devicetree/bindings/iio/accel/adi,adxl345.yaml
> @@ -37,6 +37,11 @@ properties:
>    interrupts:
>      maxItems: 1
>  
> +  interrupt-names:
> +    description: Use either INT1 or INT2 for events, or ignore events.
> +    items:
> +      - enum: [INT1, INT2]

The description for this ", or ignore events" does not make sense. Just
drop it, it's clear what happens if you don't provide interrupts.

However, interrupts is a required property but interrupt-names is not.
Seems rather pointless not making interrupt-names a required property
(in the binding!) since if you only add interrupts and not
interrupt-names you can't even use the interrupt as you do not know
whether or not it is INT1 or INT2?

> +
>  required:
>    - compatible
>    - reg
> @@ -61,6 +66,7 @@ examples:
>              reg = <0x2a>;
>              interrupt-parent = <&gpio0>;
>              interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
> +            interrupt-names = "INT1";
>          };
>      };
>    - |
> @@ -79,5 +85,6 @@ examples:
>              spi-cpha;
>              interrupt-parent = <&gpio0>;
>              interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
> +            interrupt-names = "INT2";
>          };
>      };
> -- 
> 2.39.2
> 

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