Software Tuning, Performance Optimization & Platform Monitoring
Discussion regarding monitoring and software tuning methodologies, Performance Monitoring Unit (PMU) of Intel microprocessors, and platform updating.
Announcements
Important Update: Community Platform Migration​. Learn more​>
1857 Discussions

MCTP over I3C

danclewis
Beginner
‎11-21-2025 12:22 PM
1,502 Views

Hi, I'm testing MCTP over I3C functionality and all of my testing points to the CPU being in a loopback mode.  Is there a special command or procedure for getting the CPU out of this mode and into a full MCTP protocol support mode?  The CPU I'm using is the  Intel(R) Xeon(R) 6740P. i.e. Granit Rapids.
thanks,

Dan

0 Kudos

Link Copied

1 Reply
ninjaturtle
Beginner
‎02-24-2026 05:24 AM
1,062 Views

Hi danclewis , 
I think you can check the driver 
linux/drivers/i3c/mctp at aspeed-master-v6.18 · AspeedTech-BMC/linux · GitHub
and 
linux/drivers/peci/busses/peci-i3c.c at dev-5.15-intel · Intel-BMC/linux · GitHub

a adapter point /dev/peci-0 will be created , 
which can be used to get some cpu info using intel  peci_mctp_test tools , 
Thanks , 
I am also searching about it ..

0 Kudos
Copy link
Reply

Community support is provided Monday to Friday. Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.