diff mbox series

[v3,1/2] dt-bindings: arm: Add OP-TEE transport for SCMI

Message ID 20211018114046.25571-1-etienne.carriere@linaro.org (mailing list archive)
State New, archived
Headers show
Series [v3,1/2] dt-bindings: arm: Add OP-TEE transport for SCMI | expand

Commit Message

Etienne Carriere Oct. 18, 2021, 11:40 a.m. UTC
Introduce compatible "linaro,scmi-optee" for SCMI transport channel
based on an OP-TEE service invocation. The compatible mandates a
channel ID defined with property "linaro,optee-channel-id".

Cc: devicetree@vger.kernel.org
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
---
Changes since v2:
 - Define mandatory property linaro,optee-channel-id
 - Rebased on yaml description file

Changes since v1:
 - Removed modification regarding mboxes property description.
---
 .../bindings/firmware/arm,scmi.yaml           | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

Comments

Rob Herring (Arm) Oct. 18, 2021, 5:32 p.m. UTC | #1
On Mon, 18 Oct 2021 13:40:45 +0200, Etienne Carriere wrote:
> Introduce compatible "linaro,scmi-optee" for SCMI transport channel
> based on an OP-TEE service invocation. The compatible mandates a
> channel ID defined with property "linaro,optee-channel-id".
> 
> Cc: devicetree@vger.kernel.org
> Cc: Rob Herring <robh+dt@kernel.org>
> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
> ---
> Changes since v2:
>  - Define mandatory property linaro,optee-channel-id
>  - Rebased on yaml description file
> 
> Changes since v1:
>  - Removed modification regarding mboxes property description.
> ---
>  .../bindings/firmware/arm,scmi.yaml           | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 

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/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'description' is a required property
	hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
	from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
	'type' is a required property
		hint: A vendor boolean property can use "type: boolean"
	Additional properties are not allowed ('maxItems' was unexpected)
		hint: A vendor boolean property can use "type: boolean"
	/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
		'enum' is a required property
		'const' is a required property
		hint: A vendor string property with exact values has an implicit type
		from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
	/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
		'$ref' is a required property
		'allOf' is a required property
		hint: A vendor property needs a $ref to types.yaml
		from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
	hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
	from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: ignoring, error in schema: patternProperties: ^protocol@[0-9a-f]+$: properties: linaro,optee-channel-id
warning: no schema found in file: ./Documentation/devicetree/bindings/firmware/arm,scmi.yaml
Documentation/devicetree/bindings/mailbox/arm,mhu.example.dt.yaml:0:0: /example-1/firmware/scmi: failed to match any schema with compatible: ['arm,scmi']
Documentation/devicetree/bindings/firmware/arm,scmi.example.dts:175.39-178.19: ERROR (duplicate_label): /example-2/firmware/scmi/protocol@14: Duplicate label 'scmi_clk' on /example-2/firmware/scmi/protocol@14 and /example-0/firmware/scmi/protocol@14
Documentation/devicetree/bindings/firmware/arm,scmi.example.dts:180.40-186.19: ERROR (duplicate_label): /example-2/firmware/scmi/protocol@13: Duplicate label 'scmi_dvfs' on /example-2/firmware/scmi/protocol@13 and /example-0/firmware/scmi/protocol@13
ERROR: Input tree has errors, aborting (use -f to force output)
make[1]: *** [scripts/Makefile.lib:385: Documentation/devicetree/bindings/firmware/arm,scmi.example.dt.yaml] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1441: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1542547

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

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.
Rob Herring (Arm) Oct. 18, 2021, 5:40 p.m. UTC | #2
On Mon, Oct 18, 2021 at 01:40:45PM +0200, Etienne Carriere wrote:
> Introduce compatible "linaro,scmi-optee" for SCMI transport channel
> based on an OP-TEE service invocation. The compatible mandates a
> channel ID defined with property "linaro,optee-channel-id".
> 
> Cc: devicetree@vger.kernel.org
> Cc: Rob Herring <robh+dt@kernel.org>
> Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
> ---
> Changes since v2:
>  - Define mandatory property linaro,optee-channel-id
>  - Rebased on yaml description file
> 
> Changes since v1:
>  - Removed modification regarding mboxes property description.
> ---
>  .../bindings/firmware/arm,scmi.yaml           | 44 +++++++++++++++++++
>  1 file changed, 44 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> index 5c4c6782e052..12154ecc081b 100644
> --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> @@ -38,6 +38,9 @@ properties:
>                       The virtio transport only supports a single device.
>          items:
>            - const: arm,scmi-virtio
> +      - description: SCMI compliant firmware with OP-TEE transport
> +        items:
> +          - const: linaro,scmi-optee
>  
>    interrupts:
>      description:
> @@ -83,6 +86,11 @@ properties:
>      description:
>        SMC id required when using smc or hvc transports
>  
> +  linaro,optee-channel-id:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      Channel id required when using OP-TEE transports
> +
>    protocol@11:
>      type: object
>      properties:
> @@ -195,6 +203,9 @@ patternProperties:
>          minItems: 1
>          maxItems: 2
>  
> +      linaro,optee-channel-id:
> +        maxItems: 1

Why is the same property in 2 different spots? That doesn't seem ideal.

Unfortunately, you have to duplicate the definition.

> +
>      required:
>        - reg
>  
> @@ -226,6 +237,16 @@ else:
>        - arm,smc-id
>        - shmem
>  
> +  else:
> +    if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: linaro,scmi-optee
> +    then:
> +      required:
> +        - linaro,optee-channel-id
> +
>  examples:
>    - |
>      firmware {
> @@ -340,7 +361,30 @@ examples:
>                  reg = <0x11>;
>                  #power-domain-cells = <1>;
>              };
> +        };
> +    };
> +
> +  - |
> +    firmware {
> +        scmi {
> +            compatible = "linaro,scmi-optee";
> +            linaro,optee-channel = <0>;
> +
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            scmi_clk: protocol@14 {
> +                reg = <0x14>;
> +                #clock-cells = <1>;
> +            };
> +
> +            scmi_dvfs: protocol@13 {
> +                reg = <0x13>;
>  
> +                #clock-cells = <1>;
> +                linaro,optee-channel = <1>;
> +                shmem = <&cpu_scp_hpri0>;
> +            };
>          };
>      };
>  
> -- 
> 2.17.1
> 
>
Etienne Carriere Oct. 19, 2021, 9:20 a.m. UTC | #3
On Mon, 18 Oct 2021 at 19:40, Rob Herring <robh@kernel.org> wrote:
>
> On Mon, Oct 18, 2021 at 01:40:45PM +0200, Etienne Carriere wrote:
> > Introduce compatible "linaro,scmi-optee" for SCMI transport channel
> > based on an OP-TEE service invocation. The compatible mandates a
> > channel ID defined with property "linaro,optee-channel-id".
> >
> > Cc: devicetree@vger.kernel.org
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
> > ---
> > Changes since v2:
> >  - Define mandatory property linaro,optee-channel-id
> >  - Rebased on yaml description file
> >
> > Changes since v1:
> >  - Removed modification regarding mboxes property description.
> > ---
> >  .../bindings/firmware/arm,scmi.yaml           | 44 +++++++++++++++++++
> >  1 file changed, 44 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > index 5c4c6782e052..12154ecc081b 100644
> > --- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > +++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > @@ -38,6 +38,9 @@ properties:
> >                       The virtio transport only supports a single device.
> >          items:
> >            - const: arm,scmi-virtio
> > +      - description: SCMI compliant firmware with OP-TEE transport
> > +        items:
> > +          - const: linaro,scmi-optee
> >
> >    interrupts:
> >      description:
> > @@ -83,6 +86,11 @@ properties:
> >      description:
> >        SMC id required when using smc or hvc transports
> >
> > +  linaro,optee-channel-id:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description:
> > +      Channel id required when using OP-TEE transports
> > +
> >    protocol@11:
> >      type: object
> >      properties:
> > @@ -195,6 +203,9 @@ patternProperties:
> >          minItems: 1
> >          maxItems: 2
> >
> > +      linaro,optee-channel-id:
> > +        maxItems: 1
>
> Why is the same property in 2 different spots? That doesn't seem ideal.
>
> Unfortunately, you have to duplicate the definition.

Property linaro,optee-channel-id for compatible linaro,scmi-optee
is like properties mboxes and shmem for compatibile arm,scmi.
There are mandated in the scmi node and are optional in its subnodes:
an scmi protocol (a subnode), can have a dedicated scmi channel.

The yaml description is expected to reflect that.

Regards,
Etienne

>
> > +
> >      required:
> >        - reg
> >
> > @@ -226,6 +237,16 @@ else:
> >        - arm,smc-id
> >        - shmem
> >
> > +  else:
> > +    if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: linaro,scmi-optee
> > +    then:
> > +      required:
> > +        - linaro,optee-channel-id
> > +
> >  examples:
> >    - |
> >      firmware {
> > @@ -340,7 +361,30 @@ examples:
> >                  reg = <0x11>;
> >                  #power-domain-cells = <1>;
> >              };
> > +        };
> > +    };
> > +
> > +  - |
> > +    firmware {
> > +        scmi {
> > +            compatible = "linaro,scmi-optee";
> > +            linaro,optee-channel = <0>;
> > +
> > +            #address-cells = <1>;
> > +            #size-cells = <0>;
> > +
> > +            scmi_clk: protocol@14 {
> > +                reg = <0x14>;
> > +                #clock-cells = <1>;
> > +            };
> > +
> > +            scmi_dvfs: protocol@13 {
> > +                reg = <0x13>;
> >
> > +                #clock-cells = <1>;
> > +                linaro,optee-channel = <1>;
> > +                shmem = <&cpu_scp_hpri0>;
> > +            };
> >          };
> >      };
> >
> > --
> > 2.17.1
> >
> >
Etienne Carriere Oct. 20, 2021, 3:52 p.m. UTC | #4
Hello Rob,


On Mon, 18 Oct 2021 at 19:32, Rob Herring <robh@kernel.org> wrote:
>
> On Mon, 18 Oct 2021 13:40:45 +0200, Etienne Carriere wrote:
> > Introduce compatible "linaro,scmi-optee" for SCMI transport channel
> > based on an OP-TEE service invocation. The compatible mandates a
> > channel ID defined with property "linaro,optee-channel-id".
> >
> > Cc: devicetree@vger.kernel.org
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
> > ---
> > Changes since v2:
> >  - Define mandatory property linaro,optee-channel-id
> >  - Rebased on yaml description file
> >
> > Changes since v1:
> >  - Removed modification regarding mboxes property description.
> > ---
> >  .../bindings/firmware/arm,scmi.yaml           | 44 +++++++++++++++++++
> >  1 file changed, 44 insertions(+)
> >
>
> 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/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'description' is a required property
>         hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
>         from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
>         'type' is a required property
>                 hint: A vendor boolean property can use "type: boolean"
>         Additional properties are not allowed ('maxItems' was unexpected)
>                 hint: A vendor boolean property can use "type: boolean"
>         /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
>                 'enum' is a required property
>                 'const' is a required property
>                 hint: A vendor string property with exact values has an implicit type
>                 from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
>         /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
>                 '$ref' is a required property
>                 'allOf' is a required property
>                 hint: A vendor property needs a $ref to types.yaml
>                 from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
>         hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
>         from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
> /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: ignoring, error in schema: patternProperties: ^protocol@[0-9a-f]+$: properties: linaro,optee-channel-id
> warning: no schema found in file: ./Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> Documentation/devicetree/bindings/mailbox/arm,mhu.example.dt.yaml:0:0: /example-1/firmware/scmi: failed to match any schema with compatible: ['arm,scmi']
> Documentation/devicetree/bindings/firmware/arm,scmi.example.dts:175.39-178.19: ERROR (duplicate_label): /example-2/firmware/scmi/protocol@14: Duplicate label 'scmi_clk' on /example-2/firmware/scmi/protocol@14 and /example-0/firmware/scmi/protocol@14
> Documentation/devicetree/bindings/firmware/arm,scmi.example.dts:180.40-186.19: ERROR (duplicate_label): /example-2/firmware/scmi/protocol@13: Duplicate label 'scmi_dvfs' on /example-2/firmware/scmi/protocol@13 and /example-0/firmware/scmi/protocol@13
> ERROR: Input tree has errors, aborting (use -f to force output)
> make[1]: *** [scripts/Makefile.lib:385: Documentation/devicetree/bindings/firmware/arm,scmi.example.dt.yaml] Error 2
> make[1]: *** Waiting for unfinished jobs....
> make: *** [Makefile:1441: dt_binding_check] Error 2
>
> doc reference errors (make refcheckdocs):
>
> See https://patchwork.ozlabs.org/patch/1542547
>
> This check can fail if there are any dependencies. The base for a patch
> series is generally the most recent rc1.
>
> 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.
>

Thanks for the feedback and guidelines. I've played a bit with dt
checker and saw that description/type/etc.. are not needed when the
property name does not include a coma ','.

I think i'll use "optee-channel-id" instead of
"linaro,optee-channel-id" as property name.
With that name, 'make dt_binding_check' passes without complains on
arm,scmi.yaml.
I have no strong preference and here and can go either ways.

I though the "linaro," was expected.
Please tell me if there's any reason I need to preserve this "linaro,"
prefix on that property.

Regards,
Etienne
Etienne Carriere Oct. 20, 2021, 4:45 p.m. UTC | #5
Hi again,

On Wed, 20 Oct 2021 at 17:52, Etienne Carriere
<etienne.carriere@linaro.org> wrote:
>
> Hello Rob,
>
>
> On Mon, 18 Oct 2021 at 19:32, Rob Herring <robh@kernel.org> wrote:
> >
> > On Mon, 18 Oct 2021 13:40:45 +0200, Etienne Carriere wrote:
> > > Introduce compatible "linaro,scmi-optee" for SCMI transport channel
> > > based on an OP-TEE service invocation. The compatible mandates a
> > > channel ID defined with property "linaro,optee-channel-id".
> > >
> > > Cc: devicetree@vger.kernel.org
> > > Cc: Rob Herring <robh+dt@kernel.org>
> > > Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
> > > ---
> > > Changes since v2:
> > >  - Define mandatory property linaro,optee-channel-id
> > >  - Rebased on yaml description file
> > >
> > > Changes since v1:
> > >  - Removed modification regarding mboxes property description.
> > > ---
> > >  .../bindings/firmware/arm,scmi.yaml           | 44 +++++++++++++++++++
> > >  1 file changed, 44 insertions(+)
> > >
> >
> > 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/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'description' is a required property
> >         hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
> >         from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
> > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
> >         'type' is a required property
> >                 hint: A vendor boolean property can use "type: boolean"
> >         Additional properties are not allowed ('maxItems' was unexpected)
> >                 hint: A vendor boolean property can use "type: boolean"
> >         /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
> >                 'enum' is a required property
> >                 'const' is a required property
> >                 hint: A vendor string property with exact values has an implicit type
> >                 from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
> >         /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: patternProperties:^protocol@[0-9a-f]+$:properties:linaro,optee-channel-id: 'oneOf' conditional failed, one must be fixed:
> >                 '$ref' is a required property
> >                 'allOf' is a required property
> >                 hint: A vendor property needs a $ref to types.yaml
> >                 from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
> >         hint: Vendor specific properties must have a type and description unless they have a defined, common suffix.
> >         from schema $id: http://devicetree.org/meta-schemas/vendor-props.yaml#
> > /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/firmware/arm,scmi.yaml: ignoring, error in schema: patternProperties: ^protocol@[0-9a-f]+$: properties: linaro,optee-channel-id
> > warning: no schema found in file: ./Documentation/devicetree/bindings/firmware/arm,scmi.yaml
> > Documentation/devicetree/bindings/mailbox/arm,mhu.example.dt.yaml:0:0: /example-1/firmware/scmi: failed to match any schema with compatible: ['arm,scmi']
> > Documentation/devicetree/bindings/firmware/arm,scmi.example.dts:175.39-178.19: ERROR (duplicate_label): /example-2/firmware/scmi/protocol@14: Duplicate label 'scmi_clk' on /example-2/firmware/scmi/protocol@14 and /example-0/firmware/scmi/protocol@14
> > Documentation/devicetree/bindings/firmware/arm,scmi.example.dts:180.40-186.19: ERROR (duplicate_label): /example-2/firmware/scmi/protocol@13: Duplicate label 'scmi_dvfs' on /example-2/firmware/scmi/protocol@13 and /example-0/firmware/scmi/protocol@13
> > ERROR: Input tree has errors, aborting (use -f to force output)
> > make[1]: *** [scripts/Makefile.lib:385: Documentation/devicetree/bindings/firmware/arm,scmi.example.dt.yaml] Error 2
> > make[1]: *** Waiting for unfinished jobs....
> > make: *** [Makefile:1441: dt_binding_check] Error 2
> >
> > doc reference errors (make refcheckdocs):
> >
> > See https://patchwork.ozlabs.org/patch/1542547
> >
> > This check can fail if there are any dependencies. The base for a patch
> > series is generally the most recent rc1.
> >
> > 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.
> >
>
> Thanks for the feedback and guidelines. I've played a bit with dt
> checker and saw that description/type/etc.. are not needed when the
> property name does not include a coma ','.
>
> I think i'll use "optee-channel-id" instead of
> "linaro,optee-channel-id" as property name.
> With that name, 'make dt_binding_check' passes without complains on
> arm,scmi.yaml.
> I have no strong preference and here and can go either ways.

Discard my comment. I'll preserve the linaro, vendor prefix.
This property is all but generic.
I"ll add a clean description where needed and run dt_checker against.

Sorry for the noise.
Regards,
Etienne


>
> I though the "linaro," was expected.
> Please tell me if there's any reason I need to preserve this "linaro,"
> prefix on that property.
>
> Regards,
> Etienne
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index 5c4c6782e052..12154ecc081b 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -38,6 +38,9 @@  properties:
                      The virtio transport only supports a single device.
         items:
           - const: arm,scmi-virtio
+      - description: SCMI compliant firmware with OP-TEE transport
+        items:
+          - const: linaro,scmi-optee
 
   interrupts:
     description:
@@ -83,6 +86,11 @@  properties:
     description:
       SMC id required when using smc or hvc transports
 
+  linaro,optee-channel-id:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      Channel id required when using OP-TEE transports
+
   protocol@11:
     type: object
     properties:
@@ -195,6 +203,9 @@  patternProperties:
         minItems: 1
         maxItems: 2
 
+      linaro,optee-channel-id:
+        maxItems: 1
+
     required:
       - reg
 
@@ -226,6 +237,16 @@  else:
       - arm,smc-id
       - shmem
 
+  else:
+    if:
+      properties:
+        compatible:
+          contains:
+            const: linaro,scmi-optee
+    then:
+      required:
+        - linaro,optee-channel-id
+
 examples:
   - |
     firmware {
@@ -340,7 +361,30 @@  examples:
                 reg = <0x11>;
                 #power-domain-cells = <1>;
             };
+        };
+    };
+
+  - |
+    firmware {
+        scmi {
+            compatible = "linaro,scmi-optee";
+            linaro,optee-channel = <0>;
+
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            scmi_clk: protocol@14 {
+                reg = <0x14>;
+                #clock-cells = <1>;
+            };
+
+            scmi_dvfs: protocol@13 {
+                reg = <0x13>;
 
+                #clock-cells = <1>;
+                linaro,optee-channel = <1>;
+                shmem = <&cpu_scp_hpri0>;
+            };
         };
     };