nvme sensors

[Benjamin Fair]

On Fri, 17 Apr 2020 at 11:05, Vijay Khemka <vijaykhemka at fb.com> wrote:
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> On 4/16/20, 4:35 PM, "Benjamin Fair" <benjaminfair at google.com> wrote:
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>     On Thu, 16 Apr 2020 at 16:15, Vijay Khemka <vijaykhemka at fb.com> wrote:
>     >
>     > Currently, dbus-sensors support reading NVME sensors via mctp only. It uses
>     > libmctp and some of smbus patch from Intel. It also uses slave mqueue mctp
>     > kernel driver which is not upstream.
>     >
>     > So currently it is not matured and fully upstreamed.
>     >
>     > James, how can we use this without mctp. I don't see any non mctp support like
>     > Sending direct smbus command, please advise if I missed it.
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>     If you want to use NVME-MI without MCTP, this use case is supported by
>     phosphor-nvme. It makes direct SMBus calls.
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> Ben, thanks I see that but it needs certain GPIOs like PwrGd, presence and I am trying to find if
> Our platform support any such GPIOs.

If your platform doesn't have these GPIOs, we should be able to make
phosphor-nvme more flexible and not require them. It was designed for
one system at first with the expectation that it could become more
general over time.

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>     >
>     > Regards
>     > -Vijay
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