topic Re: Messaging Unit mapping in imx8qm in i.MX Processors

Messaging Unit mapping in imx8qm

bghiggins — Wed, 11 May 2022 20:09:45 GMT

The IMX8QM manual does a lot to describe the how the Message Unit works IO between Core A and Core B, but it doesn't really describe which MU A are connected to which MU B. From what I can tell, it seems to be a one to one connection, but I could be wrong. How can I tell what the MU connections are between the different domains?

Re: Messaging Unit mapping in imx8qm

Harvey021 — Mon, 23 May 2022 09:42:52 GMT

Hi @bghiggins

MU is a group of AB, but we have many MUs, such as MU1, MU2, MU3, so for MU1, MU1_A is the one that communicates with MU1_B.

Since the Arch and IP belong to ARM, I would recommend you to refer to ARM sources for more details.

Best regards

Harvey

Re: Messaging Unit mapping in imx8qm

bghiggins — Thu, 02 Jun 2022 15:21:47 GMT

It seems the MUs connections are controlled by the DSC (Distributed Slave System Controller). Is there documentation for that or is that also something I need to get from ARM?

Re: Messaging Unit mapping in imx8qm

Harvey021 — Tue, 07 Jun 2022 08:12:23 GMT

Hi,

Such documentation(DSC) that I can't access too. You need to contact Local NXP FAE or marketing team to get it.

Best regards

Harvey

Best regards

Harvey

Re: Messaging Unit mapping in imx8qm

bghiggins — Wed, 08 Jun 2022 13:56:33 GMT

Is there a good point of contact for the marketing and/or FAE teams?

Re: Messaging Unit mapping in imx8qm

Harvey021 — Fri, 10 Jun 2022 02:58:25 GMT

A better way to reach out your local DFAE, if you know someone who is the one supports for you.

Best regards

Harvey