linux-kernel - Re: [PATCH 13/16] hwmon: (mr75203) add thermal coefficient properties for Moortec PVT controller

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Message-ID: <20220818150510.GI1829017-robh@kernel.org>
Date:   Thu, 18 Aug 2022 09:05:10 -0600
From:   Rob Herring <robh@...nel.org>
To:     Eliav Farber <farbere@...zon.com>
Cc:     jdelvare@...e.com, linux@...ck-us.net, mark.rutland@....com,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, talel@...zon.com, hhhawa@...zon.com,
        jonnyc@...zon.com, hanochu@...zon.com, ronenk@...zon.com,
        itamark@...zon.com, shellykz@...zon.com, shorer@...zon.com,
        amitlavi@...zon.com, almogbs@...zon.com, dwmw@...zon.co.uk,
        rtanwar@...linear.com
Subject: Re: [PATCH 13/16] hwmon: (mr75203) add thermal coefficient
 properties for Moortec PVT controller

On Tue, Aug 16, 2022 at 08:27:54AM +0000, Eliav Farber wrote:
> Add optional "ts-coeff-g", "ts-coeff-h", "ts-coeff-cal5" and
> "ts-coeff-j" properties to be used instead of defaults for the
> thermal equasion.
> 
> Signed-off-by: Eliav Farber <farbere@...zon.com>
> ---
>  .../bindings/hwmon/moortec,mr75203.yaml       | 33 +++++++++++++++++++
>  1 file changed, 33 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> index e2a55001eefc..867664bd937f 100644
> --- a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> +++ b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> @@ -62,6 +62,30 @@ properties:
>        used to normalzie the voltage output results.
>      $ref: /schemas/types.yaml#definitions/uint32
>  
> +  ts-coeff-g:

Needs a vendor prefix

> +    description:
> +      G coefficient for thermal equation.
> +    maxItems: 1

It's a scalar. 'maxItems' is for arrays/matrices.

> +    $ref: /schemas/types.yaml#definitions/uint32
> +
> +  ts-coeff-h:
> +    description:
> +      H coefficient for thermal equation.
> +    maxItems: 1
> +    $ref: /schemas/types.yaml#definitions/uint32
> +
> +  ts-coeff-cal5:
> +    description:
> +      cal5 coefficient for thermal equation (can't be 0).

minimum: 1

Other constraints on all these?

> +    maxItems: 1
> +    $ref: /schemas/types.yaml#definitions/uint32
> +
> +  ts-coeff-j:
> +    description:
> +      J coefficient for thermal equation.
> +    maxItems: 1
> +    $ref: /schemas/types.yaml#definitions/int32
> +
>  required:
>    - compatible
>    - reg
> @@ -75,6 +99,10 @@ additionalProperties:
>    - reset-control-skip
>    - vm-active-channels
>    - vm-pre-scalar-ch#
> +  - ts-coeff-g
> +  - ts-coeff-h
> +  - ts-coeff-cal5
> +  - ts-coeff-j
>  
>  examples:
>    - |
> @@ -90,5 +118,10 @@ examples:
>          resets = <&rcu0 0x40 7>;
>          vm-active-channels = [08 10 02];
>          vm-pre-scalar-ch5 = <2>;
> +        ts-coeff-g = <57400>;
> +        ts-coeff-h = <249400>;
> +        ts-coeff-cal5 = <4096>;
> +        ts-coeff-j = <0>;
> +
>          #thermal-sensor-cells = <1>;
>      };
> -- 
> 2.37.1
>