2022-07-27 14:15:58

by Krzysztof Kozlowski

[permalink] [raw]
Subject: [PATCH] dt-bindings: iio: gyroscope: bosch,bmg160: correct number of pins

BMG160 has two interrupt pins to which interrupts can be freely mapped.
Correct the schema to express such case and fix warnings like:

qcom/msm8916-alcatel-idol347.dtb: gyroscope@68: interrupts: [[97, 1], [98, 1]] is too long

Signed-off-by: Krzysztof Kozlowski <[email protected]>
---
.../devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml | 3 +++
1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml b/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml
index b6bbc312a7cf..ebf98bc2eb7f 100644
--- a/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml
+++ b/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml
@@ -24,6 +24,9 @@ properties:

interrupts:
minItems: 1
+ items:
+ - description: INT1 pin
+ - description: INT2 pin
description:
Should be configured with type IRQ_TYPE_EDGE_RISING.

--
2.34.1


2022-07-28 15:04:43

by Rob Herring

[permalink] [raw]
Subject: Re: [PATCH] dt-bindings: iio: gyroscope: bosch,bmg160: correct number of pins

On Wed, 27 Jul 2022 16:01:48 +0200, Krzysztof Kozlowski wrote:
> BMG160 has two interrupt pins to which interrupts can be freely mapped.
> Correct the schema to express such case and fix warnings like:
>
> qcom/msm8916-alcatel-idol347.dtb: gyroscope@68: interrupts: [[97, 1], [98, 1]] is too long
>
> Signed-off-by: Krzysztof Kozlowski <[email protected]>
> ---
> .../devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml | 3 +++
> 1 file changed, 3 insertions(+)
>

Acked-by: Rob Herring <[email protected]>

2022-07-31 12:38:07

by Jonathan Cameron

[permalink] [raw]
Subject: Re: [PATCH] dt-bindings: iio: gyroscope: bosch,bmg160: correct number of pins

On Wed, 27 Jul 2022 16:01:48 +0200
Krzysztof Kozlowski <[email protected]> wrote:

> BMG160 has two interrupt pins to which interrupts can be freely mapped.
> Correct the schema to express such case and fix warnings like:
>
> qcom/msm8916-alcatel-idol347.dtb: gyroscope@68: interrupts: [[97, 1], [98, 1]] is too long
>
> Signed-off-by: Krzysztof Kozlowski <[email protected]>

We may need more than this. What if only INT2 is wired? I'd expect such
a device's binding to include interrupt-names to cover that case.
We'd also need a bunch of driver code to route the resulting interrupts.

I think the snag is that adding such support will break existing bindings using the
below.

> ---
> .../devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml b/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml
> index b6bbc312a7cf..ebf98bc2eb7f 100644
> --- a/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml
> +++ b/Documentation/devicetree/bindings/iio/gyroscope/bosch,bmg160.yaml
> @@ -24,6 +24,9 @@ properties:
>
> interrupts:
> minItems: 1
> + items:
> + - description: INT1 pin
> + - description: INT2 pin
> description:
> Should be configured with type IRQ_TYPE_EDGE_RISING.
>


2022-08-05 07:12:48

by Krzysztof Kozlowski

[permalink] [raw]
Subject: Re: [PATCH] dt-bindings: iio: gyroscope: bosch,bmg160: correct number of pins

On 31/07/2022 14:30, Jonathan Cameron wrote:
> On Wed, 27 Jul 2022 16:01:48 +0200
> Krzysztof Kozlowski <[email protected]> wrote:
>
>> BMG160 has two interrupt pins to which interrupts can be freely mapped.
>> Correct the schema to express such case and fix warnings like:
>>
>> qcom/msm8916-alcatel-idol347.dtb: gyroscope@68: interrupts: [[97, 1], [98, 1]] is too long
>>
>> Signed-off-by: Krzysztof Kozlowski <[email protected]>
>
> We may need more than this. What if only INT2 is wired?

Right, thanks for pointing it out.

> I'd expect such
> a device's binding to include interrupt-names to cover that case.
> We'd also need a bunch of driver code to route the resulting interrupts.

Yes, which is a bit out of scope of fixing schema/DTS. The driver
supports only one interrupt and bindings are unspecific, so I think the
author just did not care about making it correct.

>
> I think the snag is that adding such support will break existing bindings using the
> below.

I can prepare more relaxed version of the patch.

Best regards,
Krzysztof