linux-kernel - Re: [PATCH 06/11] dt-bindings: thermal: k3-j72xx: conditionally require efuse reg range

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Date:   Wed, 12 Oct 2022 09:38:26 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Bryan Brattlof <bb@...com>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>, Keerthy <j-keerthy@...com>,
        Linux Thermal <linux-pm@...r.kernel.org>,
        Linux Device Tree <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 06/11] dt-bindings: thermal: k3-j72xx: conditionally
 require efuse reg range

On 11/10/2022 19:17, Bryan Brattlof wrote:
> Only some of TI's J721E SoCs will need a eFuse register range mapped to
> determine if they're affected by TI's i2128 erratum. All other SoC will
> not need this eFuse range to be mapped to function properly
> 
> Update the bindings for the k3_j72xx_bandgap thermal driver so other
> devices will only need to define two register ranges
> 
> Signed-off-by: Bryan Brattlof <bb@...com>
> ---
>  .../bindings/thermal/ti,j72xx-thermal.yaml    | 34 +++++++++++++------
>  1 file changed, 24 insertions(+), 10 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> index 0b6a6fa07a532..387628ab35959 100644
> --- a/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> +++ b/Documentation/devicetree/bindings/thermal/ti,j72xx-thermal.yaml
> @@ -33,16 +33,6 @@ properties:
>        - ti,j721e-vtm
>        - ti,j7200-vtm
>  
> -  reg:

No, keep entire part here.
with minItems:2


> -    items:
> -      - description: VTM cfg1 register space
> -      - description: VTM cfg2 register space
> -      - description: |
> -          A software trimming method must be applied to some Jacinto
> -          devices to function properly. This eFuse region provides
> -          the information needed for these SoCs to report
> -          temperatures accurately.
> -
>    power-domains:
>      description: |
>        Should contain the phandle to a power management (PM) domain
> @@ -52,6 +42,30 @@ properties:
>    "#thermal-sensor-cells":
>      const: 1
>  
> +if:

Put it under allOf.

> +  properties:
> +    compatible:
> +      contains:
> +        enum:
> +          - ti,j721e-vtm
> +then:
> +  properties:
> +    reg:
> +      items:
> +        - description: VTM cfg1 register space
> +        - description: VTM cfg2 register space
> +        - description: |
> +            A software trimming method must be applied to some Jacinto
> +            devices to function properly. This eFuse region provides
> +            the information needed for these SoCs to report
> +            temperatures accurately.

Instead:
minItems: 3

> +else:
> +  properties:
> +    reg:
> +      items:
> +        - description: VTM cfg1 register space
> +        - description: VTM cfg2 register space

Instead:
maxItems: 2

> +
>  required:
>    - compatible
>    - reg

Best regards,
Krzysztof