Re: [PATCH 2/2] devicetree: hwmon: Add documentation for TMP108 driver.

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Hi Guenter,

On Nov 30, 2016, at 4:42 PM, Guenter Roeck <linux@xxxxxxxxxxxx> wrote:
> 
>> +Optional node properties:
>> +- ti,thermostat-mode-comparator : (boolean) select the comparator mode for the
>> +      thermostat rather than the default interrupt-mode.
>> +
> I keep arguing with myself over this. Ultimately, I think it is not needed,
> for a simple reason: As currently written, using the driver in anything but
> comparator mode does not really make sense (because the alert status bits
> will be reset after reading them in interrupt mode). Second, interrupt mode
> can be determined automatically, based on the presence of SMBus alert support.
> Given that, I wonder if it would make more sense to drop this property and
> always put the chip into comparator mode for the time being. At a later time,
> if and when alert support is added, we can discuss the best approach to
> determine how it should be enabled (ie how do we know that the SMBus adapter
> supports handling alerts, or would we assume that it always does ?).
> 
> What do you think ?

I did find myself putting the device into comparator mode in order to test the FL and FH bits, so I agree that it can be the default for now. When I can test the Alert pin, we can discuss adding interrupt and SMBus alert support.

Once you have finished reviewing the other patch, I will make that change and re-send.

Thanks,

John.

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