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 <[email protected]>
---
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(-)
diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
index 67879aab623b..1c64c7a0c3df 100644
--- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
+++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
@@ -40,6 +40,10 @@ properties:
- const: int1
minItems: 1
+ poll-interval:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Poll interval time in milliseconds.
+
clocks:
items:
- description: peripheral clock
@@ -122,15 +126,13 @@ required:
- compatible
- reg
- reg-names
- - interrupts
- - interrupt-names
- clocks
- clock-names
- bosch,mram-cfg
additionalProperties: false
-examples:
+example with interrupts:
- |
#include <dt-bindings/clock/imx6sx-clock.h>
can@20e8000 {
@@ -149,4 +151,22 @@ examples:
};
};
+example with timer polling:
+ - |
+ #include <dt-bindings/clock/imx6sx-clock.h>
+ can@20e8000 {
+ compatible = "bosch,m_can";
+ reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;
+ reg-names = "m_can", "message_ram";
+ poll-interval;
+ clocks = <&clks IMX6SX_CLK_CANFD>,
+ <&clks IMX6SX_CLK_CANFD>;
+ clock-names = "hclk", "cclk";
+ bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;
+
+ can-transceiver {
+ max-bitrate = <5000000>;
+ };
+ };
+
...
--
2.17.1
On 24.04.2023 14:54:00, 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 <[email protected]>
The bindings update should go in before the patch.
> ---
> 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(-)
>
> diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
> index 67879aab623b..1c64c7a0c3df 100644
> --- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
> +++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
> @@ -40,6 +40,10 @@ properties:
> - const: int1
> minItems: 1
>
> + poll-interval:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: Poll interval time in milliseconds.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
That's not what the code does.
> +
> clocks:
> items:
> - description: peripheral clock
> @@ -122,15 +126,13 @@ required:
> - compatible
> - reg
> - reg-names
> - - interrupts
> - - interrupt-names
> - clocks
> - clock-names
> - bosch,mram-cfg
Is it possible to specify that you either need "interrupts" and
"interrupt-names" or "poll-interval"?
>
> additionalProperties: false
>
> -examples:
> +example with interrupts:
> - |
> #include <dt-bindings/clock/imx6sx-clock.h>
> can@20e8000 {
> @@ -149,4 +151,22 @@ examples:
> };
> };
>
> +example with timer polling:
> + - |
> + #include <dt-bindings/clock/imx6sx-clock.h>
> + can@20e8000 {
> + compatible = "bosch,m_can";
> + reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;
> + reg-names = "m_can", "message_ram";
> + poll-interval;
> + clocks = <&clks IMX6SX_CLK_CANFD>,
> + <&clks IMX6SX_CLK_CANFD>;
> + clock-names = "hclk", "cclk";
> + bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;
> +
> + can-transceiver {
> + max-bitrate = <5000000>;
> + };
> + };
> +
> ...
> --
> 2.17.1
>
>
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Embedded Linux | https://www.pengutronix.de |
Vertretung Nürnberg | Phone: +49-5121-206917-129 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
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 <[email protected]>
> ---
> 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/[email protected]
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.
On 14:54-20230424, 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 <[email protected]>
> ---
> 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(-)
>
> diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
> index 67879aab623b..1c64c7a0c3df 100644
> --- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
> +++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
> @@ -40,6 +40,10 @@ properties:
> - const: int1
> minItems: 1
>
> + poll-interval:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: Poll interval time in milliseconds.
> +
> clocks:
> items:
> - description: peripheral clock
> @@ -122,15 +126,13 @@ required:
> - compatible
> - reg
> - reg-names
> - - interrupts
> - - interrupt-names
> - clocks
> - clock-names
> - bosch,mram-cfg
>
> additionalProperties: false
>
> -examples:
> +example with interrupts:
> - |
> #include <dt-bindings/clock/imx6sx-clock.h>
> can@20e8000 {
> @@ -149,4 +151,22 @@ examples:
> };
> };
>
> +example with timer polling:
did you run dt_binding_check?
make -j`nproc` ARCH=arm64 LLVM=1 dt_binding_check DT_CHECKER_FLAGS=-m DT_SCHEMA_FILES=Documentation/devicetree/bindings/net/can/bosch,m_can.yaml
tells me:
LINT Documentation/devicetree/bindings
DTEX Documentation/devicetree/bindings/net/can/bosch,m_can.example.dts
CHKDT Documentation/devicetree/bindings/processed-schema.json
/workdir/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml: 'example with interrupts' is not one of ['$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 $id: http://devicetree.org/meta-schemas/base.yaml#
/workdir/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml: 'example with timer polling' is not one of ['$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 $id: http://devicetree.org/meta-schemas/base.yaml#
> + - |
> + #include <dt-bindings/clock/imx6sx-clock.h>
> + can@20e8000 {
> + compatible = "bosch,m_can";
> + reg = <0x020e8000 0x4000>, <0x02298000 0x4000>;
> + reg-names = "m_can", "message_ram";
> + poll-interval;
> + clocks = <&clks IMX6SX_CLK_CANFD>,
> + <&clks IMX6SX_CLK_CANFD>;
> + clock-names = "hclk", "cclk";
> + bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>;
> +
> + can-transceiver {
> + max-bitrate = <5000000>;
> + };
> + };
> +
> ...
> --
> 2.17.1
>
--
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D
Hello Rob,
On 4/24/2023 7:13 PM, Rob Herring wrote:
>
> On Mon, 24 Apr 2023 14:54:00 -0500, Judith Mendez wrote:
>> On AM62x SoC, MCANs on MCU domain do not have hardware interrupt
>> routed to A53 Linux, instead they will use software interrupt by
>> hrtimer. To enable timer method, interrupts should be optional so
>> remove interrupts property from required section and introduce
>> poll-interval property.
>>
>> Signed-off-by: Judith Mendez <[email protected]>
>> ---
>> Changelog:
>> v2:
>> 1. Add poll-interval property to enable timer polling method
>> 2. Add example using poll-interval property
>>
>> .../bindings/net/can/bosch,m_can.yaml | 26 ++++++++++++++++---
>> 1 file changed, 23 insertions(+), 3 deletions(-)
>>
>
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>
> yamllint warnings/errors:
>
> dtschema/dtc warnings/errors:
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml: 'example with interrupts' is not one of ['$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 $id: http://devicetree.org/meta-schemas/base.yaml#
>
> doc reference errors (make refcheckdocs):
>
> See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/[email protected]
>
> The base for the series is generally the latest rc1. A different dependency
> should be noted in *this* patch.
>
> If you already ran 'make dt_binding_check' and didn't see the above
> error(s), then make sure 'yamllint' is installed and dt-schema is up to
> date:
>
> pip3 install dtschema --upgrade
>
> Please check and re-submit after running the above command yourself. Note
> that DT_SCHEMA_FILES can be set to your schema file to speed up checking
> your schema. However, it must be unset to test all examples with your schema.
Thanks Rob, I was not getting the errors, but I have fixed now. Thanks.
regards,
Judith
On 28/04/2023 18:17, Mendez, Judith wrote:
> Hello Rob,
>
> On 4/24/2023 7:13 PM, Rob Herring wrote:
>>
>> On Mon, 24 Apr 2023 14:54:00 -0500, Judith Mendez wrote:
>>> On AM62x SoC, MCANs on MCU domain do not have hardware interrupt
>>> routed to A53 Linux, instead they will use software interrupt by
>>> hrtimer. To enable timer method, interrupts should be optional so
>>> remove interrupts property from required section and introduce
>>> poll-interval property.
>>>
>>> Signed-off-by: Judith Mendez <[email protected]>
>>> ---
>>> Changelog:
>>> v2:
>>> 1. Add poll-interval property to enable timer polling method
>>> 2. Add example using poll-interval property
>>>
>>> .../bindings/net/can/bosch,m_can.yaml | 26 ++++++++++++++++---
>>> 1 file changed, 23 insertions(+), 3 deletions(-)
>>>
>>
>> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
>> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>>
>> yamllint warnings/errors:
>>
>> dtschema/dtc warnings/errors:
>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml: 'example with interrupts' is not one of ['$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/[email protected]
>>
>> 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
Hello Krzysztof,
On 5/1/2023 2:16 AM, Krzysztof Kozlowski wrote:
> 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 <[email protected]>
>>>> ---
>>>> 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/[email protected]
>>>
>>> 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.
Will do, thanks for taking the time to check the patch for errors.
regards,
Judith