Re: [PATCH v2 1/2] dt-bindings: hwmon: Add support for ST TSC1641 power monitor

[Krzysztof Kozlowski <krzk@kernel.org>]

On 26/10/2025 19:46, Igor Reznichenko wrote:
>> Subject: I asked to drop "binding" and not add "support for". "Support
>> for" makes little sense in terms of binding. How binding can support
>> anything? This is the "ST TSC1641 power monitor" not support.
> 
> Krzysztof,
> 
> Thanks for feedback, will fix this and will create following patch versions
> in new threads.
> 
>>> +
>>> +  reg:
>>> +    maxItems: 1
>>> +
>>> +  shunt-resistor-micro-ohms:
>>> +    description: Shunt resistor value in micro-ohms. Since device has internal
>>> +      16-bit RSHUNT register with 10 uOhm LSB, the maximum value is capped at
>>> +      655.35 mOhm.
>>> +    minimum: 100
>>> +    default: 1000
>>> +    maximum: 655350
>>> +
>>> +  st,alert-polarity-active-high:
>>
>> Isn't this just interrupt? You need proper interrupts property and then
>> its flag define the type of interrupt.
> 
> This controls a bit written into device register.
> I omitted interrupt property after looking at existing power monitor bindings,
> especially hwmon/ti,ina2xx.yaml. INA226 has very similar bit controlling alert 
> pin polarity and binding doesn't define alert pin as interrupt. Overall, I didn't
> find many power monitor bindings defining alert pins as interrupts.


On INA2xx that's SMBUS Alert. Is this the case here as well?

Best regards,
Krzysztof