linux-kernel - Re: [PATCH v3 1/2] dt-bindings: power: reset: qcom-pon: update "reg" property details

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Message-ID: <c129c748-4306-da64-fc18-2d224b2fc97c@linaro.org>
Date:   Thu, 14 Jul 2022 13:48:33 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Anjelique Melendez <quic_amelende@...cinc.com>, corbet@....net,
        sre@...nel.org, robh+dt@...nel.org, agross@...nel.org,
        bjorn.andersson@...aro.org
Cc:     krzysztof.kozlowski+dt@...aro.org, vkoul@...nel.org,
        linux-doc@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        David Collins <quic_collinsd@...cinc.com>
Subject: Re: [PATCH v3 1/2] dt-bindings: power: reset: qcom-pon: update "reg"
 property details

On 13/07/2022 21:33, Anjelique Melendez wrote:
> From: David Collins <quic_collinsd@...cinc.com>
> 
> Update the description of "reg" property to add the PON_PBS base
> address along with PON_HLOS base address.  Also add "reg-names"
> property description.
> 
> Signed-off-by: David Collins <quic_collinsd@...cinc.com>
> Signed-off-by: Anjelique Melendez <quic_amelende@...cinc.com>
> ---
>  Documentation/devicetree/bindings/power/reset/qcom,pon.yaml | 73 ++++++++++++++++++++++++++++--
>  1 file changed, 69 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml b/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml
> index 353f155d..562fe308 100644
> --- a/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml
> +++ b/Documentation/devicetree/bindings/power/reset/qcom,pon.yaml
> @@ -15,18 +15,26 @@ description: |
>  
>    This DT node has pwrkey and resin as sub nodes.
>  
> -allOf:
> -  - $ref: reboot-mode.yaml#
> -
>  properties:
>    compatible:
>      enum:
>        - qcom,pm8916-pon
>        - qcom,pms405-pon
>        - qcom,pm8998-pon
> +      - qcom,pmk8350-pon
>  
>    reg:
> -    maxItems: 1
> +    description: |
> +      Specifies the SPMI base address for the PON (power-on) peripheral.  For
> +      PMICs that have the PON peripheral (GEN3) split into PON_HLOS and PON_PBS
> +      (e.g. PMK8350), this can hold addresses of both PON_HLOS and PON_PBS
> +      peripherals.  In that case, the PON_PBS address needs to be specified to
> +      facilitate software debouncing on some PMIC.

You miss here min and maxItems

> +
> +  reg-names:
> +    description: |
> +      For PON GEN1 and GEN2, it should be "pon". For PON GEN3 it should include
> +      "hlos" and optionally "pbs".

Skip description. You miss here min and maxItems.

See
https://elixir.bootlin.com/linux/v5.19-rc6/source/Documentation/devicetree/bindings/clock/samsung,exynos7-clock.yaml#L57
for examples.


>  
>    pwrkey:
>      type: object
> @@ -42,6 +50,63 @@ required:
>  
>  unevaluatedProperties: false
>  
> +allOf:
> +  - $ref: reboot-mode.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: qcom,pm8916-pon
> +    then:
> +      properties:
> +        reg:
> +          maxItems: 1
> +        reg-names:
> +          items:
> +            - const: pon
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: qcom,pms405-pon
> +    then:
> +      properties:
> +        reg:
> +          maxItems: 1
> +        reg-names:
> +          items:
> +            - const: pon
> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: qcom,pm8998-pon
> +    then:
> +      properties:
> +        reg:
> +          maxItems: 1
> +        reg-names:
> +          items:
> +            - const: pon

No clue why you made three if statements. This is one if for all three
variants.

> +
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: qcom,pmk8350-pon
> +    then:
> +      properties:
> +        reg:
> +          minItems: 1
> +          maxItems: 2
> +        reg-names:
> +          minItems: 1
> +          items:
> +            - const: hlos
> +            - const: pbs
> +
>  examples:
>    - |
>     #include <dt-bindings/interrupt-controller/irq.h>


Best regards,
Krzysztof