On Tue, Apr 02, 2024 at 08:24:37PM +0000, Chris Packham wrote:
> Hi Guenter, Jean,
>
> I've got a requirement to add some meaningful names to some hwmon
> sensors (LM75 specifically) so that we can provide some indication of
> where on a board the sensor is located (e.g. "Intake" vs "Exhaust" vs
> "Near that really hot chip").
>
> I see that the sysfs ABI documents both "label" for the chip and
> "temp[1-*]_label" (as well as similar fan and Vin attributes). The
> latter seem to be supported by the hwmon core but I don't see anything
> for the former (I'm struggling to find any driver that supports a
> chip-wide label).
>
> Assuming I want to have a label added in the device tree to a lm75 would
> something like the following be acceptable
>
> sensor@48 {
> compatible = "national,lm75";
> reg = <0x48>;
> label = "Intake";
> };
>
> I'd then update the lm75 driver to grab that from the devicetree and use
> it to provide the hwmon_temp_label attribute.
>
Have you tried just declaring the label property as you suggested above
in your system without doing anything else, and looked at the generated
sysfs attributes ?
Guenter
