linux-kernel - Re: [PATCH v2 1/5] dt-bindings: thermal: tsens: Add ipq8074 compatible

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Message-ID: <YnFP2x113LdM5p3Q@robh.at.kernel.org>
Date:   Tue, 3 May 2022 10:52:59 -0500
From:   Rob Herring <robh@...nel.org>
To:     Robert Marko <robimarko@...il.com>
Cc:     agross@...nel.org, bjorn.andersson@...aro.org, amitk@...nel.org,
        rafael@...nel.org, daniel.lezcano@...aro.org, rui.zhang@...el.com,
        krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/5] dt-bindings: thermal: tsens: Add ipq8074
 compatible

On Sun, May 01, 2022 at 08:21:56PM +0200, Robert Marko wrote:
> Qualcomm IPQ8074 has tsens v2.3.0 block, though unlike existing v2 IP it
> only uses one IRQ, so tsens v2 compatible cannot be used as the fallback.
> 
> We also have to make sure that correct interrupts are set according to
> compatibles, so populate interrupt information per compatibles.
> 
> Signed-off-by: Robert Marko <robimarko@...il.com>
> ---
> Changes in v2:
> * No need for a list in compatible check
> * Specify minItems and maxItems for interrupt and interrupt-names
> ---
>  .../bindings/thermal/qcom-tsens.yaml          | 74 +++++++++++++++++--
>  1 file changed, 67 insertions(+), 7 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> index b6406bcc683f..e9b85c99bb60 100644
> --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.yaml
> @@ -56,6 +56,10 @@ properties:
>                - qcom,sm8350-tsens
>            - const: qcom,tsens-v2
>  
> +      - description: v2 of TSENS with combined interrupt
> +        enum:
> +          - qcom,ipq8074-tsens
> +
>    reg:
>      items:
>        - description: TM registers
> @@ -63,15 +67,11 @@ properties:
>  
>    interrupts:
>      minItems: 1
> -    items:
> -      - description: Combined interrupt if upper or lower threshold crossed
> -      - description: Interrupt if critical threshold crossed
> +    maxItems: 2
>  
>    interrupt-names:
>      minItems: 1
> -    items:
> -      - const: uplow
> -      - const: critical
> +    maxItems: 2
>  
>    nvmem-cells:
>      minItems: 1
> @@ -125,21 +125,66 @@ allOf:
>        properties:
>          interrupts:
>            maxItems: 1

You can drop 'maxItems' as it is implied by 'items' length.

> +          items:
> +            - description: Combined interrupt if upper or lower threshold crossed
>          interrupt-names:
>            maxItems: 1

ditto

> +          items:
> +            - const: uplow
>  
> -    else:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,msm8953-tsens
> +              - qcom,msm8996-tsens
> +              - qcom,msm8998-tsens
> +              - qcom,sc7180-tsens
> +              - qcom,sc7280-tsens
> +              - qcom,sc8180x-tsens
> +              - qcom,sdm630-tsens
> +              - qcom,sdm845-tsens
> +              - qcom,sm8150-tsens
> +              - qcom,sm8250-tsens
> +              - qcom,sm8350-tsens
> +              - qcom,tsens-v2
> +    then:
>        properties:
>          interrupts:
>            minItems: 2

Same for minItems.

> +          items:
> +            - description: Combined interrupt if upper or lower threshold crossed
> +            - description: Interrupt if critical threshold crossed
>          interrupt-names:
>            minItems: 2

ditto

> +          items:
> +            - const: uplow
> +            - const: critical
>  
>    - if:
>        properties:
>          compatible:
>            contains:
>              enum:
> +              - qcom,ipq8074-tsens
> +    then:
> +      properties:
> +        interrupts:
> +          maxItems: 1

ditto

> +          items:
> +            - description: Combined interrupt if upper, lower or critical thresholds crossed
> +        interrupt-names:
> +          maxItems: 1

ditto

> +          items:
> +            - const: combined
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - qcom,ipq8074-tsens
>                - qcom,tsens-v0_1
>                - qcom,tsens-v1
>                - qcom,tsens-v2
> @@ -222,4 +267,19 @@ examples:
>             #qcom,sensors = <13>;
>             #thermal-sensor-cells = <1>;
>      };
> +
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    // Example 4 (for any IPQ8074 based SoC-s):
> +    tsens4: thermal-sensor@...000 {
> +           compatible = "qcom,ipq8074-tsens";
> +           reg = <0x4a9000 0x1000>,
> +                 <0x4a8000 0x1000>;
> +
> +           interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
> +           interrupt-names = "combined";
> +
> +           #qcom,sensors = <16>;
> +           #thermal-sensor-cells = <1>;
> +    };
>  ...
> -- 
> 2.35.1
> 
>