[Phosphor-power] psu-ng: Add method to get PSU conf from D-Bus.

[Phosphor-power] psu-ng: Add method to get PSU conf from D-Bus.

[Chanh Nguyen OS]

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Hi B. J. Wyman,

I'm using the psu-ng to monitor the PSU. I used the pmbus (https://github.com/openbmc/linux/blob/dev-5.10/Documentation/hwmon/pmbus.rst) driver to support hardware monitoring for the PSU, don't use the ibm-cffps driver (https://github.com/openbmc/linux/blob/dev-5.10/Documentation/hwmon/ibm-cffps.rst)

I don't clear why we fix to use the IBMCFFPSInterface (https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-power/+/38138/10/phosphor-power-supply/psu_manager.cpp#16) ?

Thanks,
Chanh Nguyen


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Re: [Phosphor-power] psu-ng: Add method to get PSU conf from D-Bus.

[Brandon Wyman]

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On 2021-06-23 04:11, Chanh Nguyen OS wrote:
> Hi B. J. Wyman,
>
> I'm using the psu-ng to monitor the PSU. I used the 
> */pmbus/*(https://github.com/openbmc/linux/blob/dev-5.10/Documentation/hwmon/pmbus.rst 
> <https://github.com/openbmc/linux/blob/dev-5.10/Documentation/hwmon/pmbus.rst>) 
> driver to support hardware monitoring for the PSU, don't use the 
> */ibm-cffps/*driver 
> (https://github.com/openbmc/linux/blob/dev-5.10/Documentation/hwmon/ibm-cffps.rst 
> <https://github.com/openbmc/linux/blob/dev-5.10/Documentation/hwmon/ibm-cffps.rst>)
>
> I don't clear why we fix to use the *IBMCFFPSInterface 
> (https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-power/+/38138/10/phosphor-power-supply/psu_manager.cpp#16 
> <https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-power/+/38138/10/phosphor-power-supply/psu_manager.cpp#16>)* ?

Yeah, that was sort of a short-sighted updated. That probably should 
have been something configurable:

https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-power/+/43018/8/phosphor-power-supply/power_supply.cpp#30


That is used to get the power supply information off of D-Bus, hopefully 
populated by the entity-manager service.

https://github.com/openbmc/entity-manager/blob/master/schemas/IBM.json

https://github.com/openbmc/entity-manager/blob/master/configurations/Nisqually.json


This should *NOT* be IBM specific, but I had some kind of blinders on 
when I wrote this.

>
> Thanks,
> Chanh Nguyen
>

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