linux-kernel - Re: [PATCH v5 16/21] dt-bindings: hwmon: (mr75203) add "moortec,ts-series" property

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Message-ID: <20220908190216.GA3423559@roeck-us.net>
Date:   Thu, 8 Sep 2022 12:02:16 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Eliav Farber <farbere@...zon.com>
Cc:     jdelvare@...e.com, robh+dt@...nel.org, p.zabel@...gutronix.de,
        rtanwar@...linear.com, andriy.shevchenko@...el.com,
        linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, hhhawa@...zon.com, jonnyc@...zon.com
Subject: Re: [PATCH v5 16/21] dt-bindings: hwmon: (mr75203) add
 "moortec,ts-series" property

On Thu, Sep 08, 2022 at 03:24:44PM +0000, Eliav Farber wrote:
> Add optional "moortec,ts-series" property to define the temperature
> equation and coefficients that shall be used to convert the digital
> output to value in milli-Celsius.
> Supported series: 5 (default) and 6.
> 
> Series 5:
>   T = G + H * (n / cal5 - 0.5) + J * F
> Where: G = 60, H = 200, cal5 = 4094, J = -0.1, F = frequency clock in MHz
> 
> Series 6:
>    T = G + H * (n / cal5 - 0.5)
> Where: G = 57.4, H = 249.4, cal5 = 4096
> 
> Signed-off-by: Eliav Farber <farbere@...zon.com>
> ---
> V4 -> V3:
> - Remove constraints in free-form text descriptions.
> 
> V3 -> V2:
> - New patch to introduce "moortec,ts-series" property.
> 
>  .../devicetree/bindings/hwmon/moortec,mr75203.yaml       | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> index d6b03a6d7043..df849517464e 100644
> --- a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> +++ b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> @@ -91,6 +91,15 @@ properties:
>        Each channel should not appear more than once.
>      $ref: /schemas/types.yaml#/definitions/uint8-array
>  
> +  moortec,ts-series:
> +    description:
> +      Definition of the temperature equation and coefficients that shall be
> +      used to convert the digital output to value in milli-Celsius.
> +    minimum: 5
> +    maximum: 6
> +    default: 5
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +

I am not a dt expert, but I wonder if this should be handled
with different "compatible" properties. Sorry if this was already
addressed and I missed it.

Thanks,
Guenter