LetsTrust

Welcome back!

A few weeks ago Mr. M.P. write me an email with the question: May it possible to drive two TPMs on one Pi (4)?

Mr. M., want to drive one native TPM for the Pi and a second TPM as a remote vTPM for a client application.

So i've tested the Hardware Setting for Mr. M., after a few Minutes and combine this two posts:
1) https://letstrust.de/archives/23-Move-LetsTrust-TPMs-to-CS0.html
2) https://letstrust.de/archives/20-Mainline.html

Here the results:

Electrical- and mechanical-setting:


Hardware configuration of the two TPMs:

and you'll need 2 TPMs, with one 0Ohm Resistor on position CS0. [1]


Linux log



I hope this will be helpful for you, too.


Bye for now!

Paul


[1]
References:
https://letstrust.de/archives/24-Hardware-update!.html
https://letstrust.de/uploads/letstrust-v2.2.placement.cs0.pdf
https://letstrust.de/uploads/letstrust-v2.2.placement.cs1.pdf