Phosphor-ipmi-ipmb

[Patrick Williams]

On Tue, Dec 13, 2022 at 10:55:35AM -0800, Vernon Mauery wrote:
> On 08-Dec-2022 09:49 AM, zehra.ozdemir at inventron.com.tr wrote:
> >Hello,
> >
> >
> >
> >We are trying to create communication between BMC and the Host. We defined
> >an ipmb device from an i2c in dts and can barely see that /dev/ipmb-x is
> >created and ipmb.service is running. But we do not understand how is data
> >transfer provided Host to BMC yet.  Is remote address in ipmb-channels.json
> >used for that reason? Also, do we need to add any driver to the host for
> >this?
> 
> I am not aware of anyone using ipmb for a system interface. So far in 
> OpenBMC, I have only heard of block transfer (BT) or keyboard controller 
> style (KCS) system interfaces. I am guessing that by ipmb you are 
> referring to SMBus System Interface or SSIF in the IPMI specification. 
> Is that what you are referring to?

The Yosemite-v2 and Yosemite-v3.5 platforms in meta-facebook use IPMB to
provide the system interface.  There is an IPMB communications path over
i2c to a uC (the "BIC").  That could potentially be used as a reference.

-- 
Patrick Williams
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <http://lists.ozlabs.org/pipermail/openbmc/attachments/20221216/7460947c/attachment.sig>