[PATCH v3 1/2] dt-bindings: hwmon: moortec,mr75203: adapt multipleOf for T-Head TH1520

[Guenter Roeck]

On 3/15/26 05:12, Conor Dooley wrote:
> On Sat, Mar 14, 2026 at 09:56:27AM -0700, Drew Fustini wrote:
>> On Tue, Mar 10, 2026 at 12:24:56AM +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)
>>> have 1/100 degree Celsius precision (the values are 42.74 and -0.16
>>> respectively), however the binding currently only allows coefficients as
>>> precise as 100 milli-Celsius (1/10 degree Celsius).
>>>
>>> Change the multipleOf value of these two coefficients to 10 (in the unit
>>> of milli-Celsius) to satisfy the need of TH1520.
>>>
>>> Signed-off-by: Icenowy Zheng <zhengxingda at iscas.ac.cn>
>>> Reviewed-by: Drew Fustini <fustini at kernel.org>
>>> ---
>>> Changes in v3:
>>> - Added Drew's R-b.
>>> - Fixed some typos in the commit message and slightly reworded the
>>>    precision sentence.
>>>
>>>   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 have applied this to thead-dt-for-next.
> 
> That's odd, why is a hwmon binding in your branch?
> 
>> https://git.kernel.org/pub/scm/linux/kernel/git/fustini/linux.git/commit/?h=thead-dt-for-next&id=eb4fd43ff6793681f0a0a8e8ac861142caba2b19
> 
> I don't see an ack on it from the relevant maintainer either?

I don't get it either. Normally I am the one to apply hwmon bindings
through the hwmon branch.

Guenter