[PATCH v2 1/2] dt-bindings: hwmon: moortec,mr75203: adapt multipleOf for T-Head TH1520

[Drew Fustini]

On Thu, Mar 05, 2026 at 10:40:43PM +0800, Icenowy Zheng wrote:
> The G and J coefficients provided by T-Head TH1520 manual (which calls
> them A and C coefficients and calls H coefficient in the binding as B)
> has the 1/100 degree Celsius bit (the values are 42.74 and -0.16
> correspondingly), however the binding currently only allows cofficients
> as precise as 100 milli-Celsius (1/10 degree Celsius).
> 
> Change the multipleOf value of these two cofficients to 10 (in the unit
> of milli-Celsius) to satisfy the need of TH1520.
> 
> Signed-off-by: Icenowy Zheng <zhengxingda at iscas.ac.cn>
> ---
> New patch in v2.
> 
>  Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> index 56db2292f062d..7d57c2934a8a1 100644
> --- a/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> +++ b/Documentation/devicetree/bindings/hwmon/moortec,mr75203.yaml
> @@ -105,7 +105,7 @@ properties:
>        G coefficient for temperature equation.
>        Default for series 5 = 60000
>        Default for series 6 = 57400
> -    multipleOf: 100
> +    multipleOf: 10
>      minimum: 1000
>      $ref: /schemas/types.yaml#/definitions/uint32
>  
> @@ -131,7 +131,7 @@ properties:
>        J coefficient for temperature equation.
>        Default for series 5 = -100
>        Default for series 6 = 0
> -    multipleOf: 100
> +    multipleOf: 10
>      maximum: 0
>      $ref: /schemas/types.yaml#/definitions/int32
>  
> -- 
> 2.52.0
> 

I am wondering if there is any backwards compatibility issue but there
are no other users of this compatible in mainline other than th1520.
There is also the precendent 030d2a0ce5dc ("dt-bindings: hwmon:
moortec,mr75203: fix multipleOf for coefficients") having change the
property. I suppose it is a not a problem unless other people on the
list raise an objection.

Thanks,
Drew