netdev - Re: [PATCH v2 2/4] dt-bindings: net: can: Add poll-interval for MCAN

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Date:   Mon, 1 May 2023 09:16:04 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Mendez, Judith" <jm@...com>, Rob Herring <robh@...nel.org>
Cc:     Jakub Kicinski <kuba@...nel.org>, Nishanth Menon <nm@...com>,
        Rob Herring <robh+dt@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Chandrasekar Ramakrishnan <rcsekar@...sung.com>,
        devicetree@...r.kernel.org,
        Oliver Hartkopp <socketcan@...tkopp.net>,
        linux-can@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Eric Dumazet <edumazet@...gle.com>,
        Tero Kristo <kristo@...nel.org>,
        Schuyler Patton <spatton@...com>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        "David S . Miller" <davem@...emloft.net>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        Vignesh Raghavendra <vigneshr@...com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/4] dt-bindings: net: can: Add poll-interval for MCAN

On 28/04/2023 18:17, Mendez, Judith wrote:
> Hello Rob,
> 
> On 4/24/2023 7:13 PM, Rob Herring wrote:
>>
>> On Mon, 24 Apr 2023 14:54:00 -0500, Judith Mendez wrote:
>>> On AM62x SoC, MCANs on MCU domain do not have hardware interrupt
>>> routed to A53 Linux, instead they will use software interrupt by
>>> hrtimer. To enable timer method, interrupts should be optional so
>>> remove interrupts property from required section and introduce
>>> poll-interval property.
>>>
>>> Signed-off-by: Judith Mendez <jm@...com>
>>> ---
>>> Changelog:
>>> v2:
>>>    1. Add poll-interval property to enable timer polling method
>>>    2. Add example using poll-interval property
>>>
>>>   .../bindings/net/can/bosch,m_can.yaml         | 26 ++++++++++++++++---
>>>   1 file changed, 23 insertions(+), 3 deletions(-)
>>>
>>
>> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
>> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>>
>> yamllint warnings/errors:
>>
>> dtschema/dtc warnings/errors:
>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml: 'example with interrupts' is not one of ['$id', '$schema', 'title', 'description', 'examples', 'required', 'allOf', 'anyOf', 'oneOf', 'definitions', '$defs', 'additionalProperties', 'dependencies', 'dependentRequired', 'dependentSchemas', 'patternProperties', 'properties', 'not', 'if', 'then', 'else', 'unevaluatedProperties', 'deprecated', 'maintainers', 'select', '$ref']
>> 	from schema $id: http://devicetree.org/meta-schemas/base.yaml#
>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml: 'example with timer polling' is not one of ['$id', '$schema', 'title', 'description', 'examples', 'required', 'allOf', 'anyOf', 'oneOf', 'definitions', '$defs', 'additionalProperties', 'dependencies', 'dependentRequired', 'dependentSchemas', 'patternProperties', 'properties', 'not', 'if', 'then', 'else', 'unevaluatedProperties', 'deprecated', 'maintainers', 'select', '$ref']
>> 	from schema $id: http://devicetree.org/meta-schemas/base.yaml#
>>
>> doc reference errors (make refcheckdocs):
>>
>> See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20230424195402.516-3-jm@ti.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.
> 
> Thanks Rob, I was not getting the errors, but I have fixed now. Thanks.

There is no way your code have worked, so either you did not test it or
your setup misses something. In both cases you would see errors, so
please check what went wrong.

Best regards,
Krzysztof