NVME-MI temperature sensors

[Tony Lee (李文富)]

> On Tue, Jun 18, 2019 at 1:31 PM James Feist <james.feist at linux.intel.com>
> wrote:
> >
> > On 6/18/19 1:07 PM, Vijay Khemka wrote:
> > > Team,
> > >
> > > I am trying to expose temperature sensor provided by NVME SSD drive.
> > > As per NVME-MI spec device provides temperature sensor value at
> > > defined register. Is there any Linux kernel driver, I need to enable
> > > to get these sensors of a SSD device we have. I see some NVME
> > > temperature sensors definition in meta-quanta/meta-gsj config.yaml
> > > and was wondering how are these read.

Hi Vijay,

Daemon[0] monitors the temperature and sets the value to the object path we created /xyz/openbmc_project/sensors/temperature/nvme(index).
Once configured correctly in meta-quanta/meta-gsj config.yaml, it can read these temperatures via ipmi command.

Best Regards,
Tony

> > >
> > > Any information on this would be helpful.
> >
> > This might be interesting to you:
> > https://gerrit.openbmc-project.xyz/c/openbmc/dbus-sensors/+/20859
> >
> 
> That's the MCTP implementation which is the direction everything is moving
> towards.
> 
> In the short term, Quanta is working on a daemon[0] to monitor temperature
> and other telemetry data over NVMe-MI on SMBus. They have an
> implementation on their own GitHub[1] and are currently in the process of
> upstreaming it[2].
> 
> [0] https://github.com/openbmc/phosphor-nvme
> [1] https://github.com/quanta-bmc/phosphor-nvme
> [2] https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-nvme/+/22560
> 
> >
> > -James
> >
> > >
> > > Regards
> > >
> > > -Vijay
> > >