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  3. [PATCH 0/3] Add devicetree support for max6639
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[PATCH 1/3] dt-bindings: hwmon: fan: Add fan binding to schema

Naresh Solanki posted 3 patches 3 years, 5 months ago
There is a newer version of this series
[PATCH 1/3] dt-bindings: hwmon: fan: Add fan binding to schema
Posted by Naresh Solanki 3 years, 5 months ago 
Add common fan properties bindings to a schema.

Bindings for fan controllers can reference the common schema for the
fan

child nodes:

  patternProperties:
    "^fan@[0-2]":
      type: object
      allOf:
        - $ref: fan-common.yaml#

Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
---
 .../devicetree/bindings/hwmon/fan-common.yaml | 77 +++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/fan-common.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/fan-common.yaml b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
new file mode 100644
index 000000000000..6bb990f00e94
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/fan-common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common fan properties
+
+properties:
+  max-rpm:
+    description:
+      Max RPM supported by fan
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  pulse-per-revolution:
+    description:
+      The number of pulse from fan sensor per revolution.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  target-rpm:
+    description:
+      Target RPM the fan should be configured during driver probe.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  pwm-frequency:
+    description:
+      PWM frequency for fan.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+  pwm-polarity-inverse:
+    description:
+      PWM polarity for fan.
+    type: boolean
+
+  label:
+    description:
+      Optional fan label
+    $ref: /schemas/types.yaml#/definitions/string
+
+additionalProperties: true
+
+examples:
+  - |
+
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        fan-controller@30 {
+            compatible = "maxim,max6639";
+            reg = <0x30>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            fan@0 {
+                reg = <0>;
+                label = "CPU0_Fan";
+                max-rpm = <32000>;
+                pulse-per-revolution = <2>;
+                target-rpm = <2000>;
+                pwm-frequency = <25000>;
+            };
+
+            fan@1 {
+                reg = <1>;
+                label = "PCIe0_Fan";
+                max-rpm = <32000>;
+                pulse-per-revolution = <2>;
+                target-rpm = <2000>;
+                pwm-frequency = <25000>;
+            };
+
+        };
+    };
+
+...
-- 
2.37.3
Re: [PATCH 1/3] dt-bindings: hwmon: fan: Add fan binding to schema
Posted by Guenter Roeck 3 years, 5 months ago 
On 10/10/22 13:30, Naresh Solanki wrote:
> Add common fan properties bindings to a schema.
> 
> Bindings for fan controllers can reference the common schema for the
> fan
> 
> child nodes:
> 
>    patternProperties:
>      "^fan@[0-2]":
>        type: object
>        allOf:
>          - $ref: fan-common.yaml#
> 
> Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
> ---
>   .../devicetree/bindings/hwmon/fan-common.yaml | 77 +++++++++++++++++++
>   1 file changed, 77 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/hwmon/fan-common.yaml
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/fan-common.yaml b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
> new file mode 100644
> index 000000000000..6bb990f00e94
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
> @@ -0,0 +1,77 @@
> +# SPDX-License-Identifier: GPL-2.0-only
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/fan-common.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Common fan properties
> +
> +properties:
> +  max-rpm:
> +    description:
> +      Max RPM supported by fan
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +
> +  pulse-per-revolution:
> +    description:
> +      The number of pulse from fan sensor per revolution.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +
> +  target-rpm:
> +    description:
> +      Target RPM the fan should be configured during driver probe.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +
> +  pwm-frequency:
> +    description:
> +      PWM frequency for fan.
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +
> +  pwm-polarity-inverse:
> +    description:
> +      PWM polarity for fan.
> +    type: boolean
> +
> +  label:
> +    description:
> +      Optional fan label
> +    $ref: /schemas/types.yaml#/definitions/string
> +

Question for Rob: If a fan controller has other properties, such
as fan-divider or min-rpm, would it be ok to add those in the fan
controller devicetree bindings, or should those be added here if/when
needed ?

Thanks,
Guenter

> +additionalProperties: true
> +
> +examples:
> +  - |
> +
> +
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        fan-controller@30 {
> +            compatible = "maxim,max6639";
> +            reg = <0x30>;
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            fan@0 {
> +                reg = <0>;
> +                label = "CPU0_Fan";
> +                max-rpm = <32000>;
> +                pulse-per-revolution = <2>;
> +                target-rpm = <2000>;
> +                pwm-frequency = <25000>;
> +            };
> +
> +            fan@1 {
> +                reg = <1>;
> +                label = "PCIe0_Fan";
> +                max-rpm = <32000>;
> +                pulse-per-revolution = <2>;
> +                target-rpm = <2000>;
> +                pwm-frequency = <25000>;
> +            };
> +
> +        };
> +    };
> +
> +...
Re: [PATCH 1/3] dt-bindings: hwmon: fan: Add fan binding to schema
Posted by Rob Herring 3 years, 5 months ago 
On Mon, 10 Oct 2022 22:30:44 +0200, Naresh Solanki wrote:
> Add common fan properties bindings to a schema.
> 
> Bindings for fan controllers can reference the common schema for the
> fan
> 
> child nodes:
> 
>   patternProperties:
>     "^fan@[0-2]":
>       type: object
>       allOf:
>         - $ref: fan-common.yaml#
> 
> Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
> ---
>  .../devicetree/bindings/hwmon/fan-common.yaml | 77 +++++++++++++++++++
>  1 file changed, 77 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/fan-common.yaml
> 

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/hwmon/fan-common.yaml: 'maintainers' is a required property
	hint: Metaschema for devicetree binding documentation
	from schema $id: http://devicetree.org/meta-schemas/base.yaml#
Documentation/devicetree/bindings/hwmon/fan-common.example.dtb:0:0: /example-0/i2c/fan-controller@30: failed to match any schema with compatible: ['maxim,max6639']

doc reference errors (make refcheckdocs):

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

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.

Patchew 2.1-devel-ea86937

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