dbus-sensors + phosphor-hwmon

[James Feist]

On 7/22/2019 3:26 PM, Patrick Venture wrote:
> I haven't tested yet, but I have a device-tree with a lot of ~40
> hard-coded sensors on it, and then the other sensors will be detected
> with entity-manager (once that's set up).

Entity-manager doesn't detect sensors, it detects removable components 
then expects certain sensors. For our baseboard here: 
https://github.com/openbmc/entity-manager/blob/master/configurations/WFT%20Baseboard.json 
at the bottom of the file there is a dbus-probe for an 
xyz.openbmc_project.FruDevice interface with some specific properties. 
If those match, then entity-manager through sysfs can add some sensors 
https://github.com/openbmc/entity-manager/blob/master/include/devices.hpp

You could also use device tree if you wanted, the export just wouldn't 
succeed. But you would need a json file with the sensors bus and address 
for dbus-sensors to work.

-James


> 
> In this case, will entity-manager populate the dbus configuration with
> those in the device-tree initially making them available to
> dbus-sensors? (or will we or should we, also configure phosphor-hwmon
> for those sensors?)
> 
> Patrick
>