[FAQ] PROCESSOR-SDK-AM57X: What IPC version for do I use when using Linux SDK 08.02.01.00?

Josue Zamitiz-Ayala

Utilizing the correct version of IPC will help your IPC applications function correctly.

One key point is that one cannot mix and match SDK RTOS versions with different Linux SDK versions.

The Linux kernel remoteproc/rpmsg framework can change from LTS kernel to LTS kernel, which requires the correct IPC version.

These errors can show up as mmufault errors:

[ 2124.692169] omap-iommu 58882000.mmu: iommu fault: da 0x8006f180 flags 0x0
[ 2124.692169] remoteproc remoteproc0: crash detected in 58820000.ipu: type mmufault

over 1 year ago

0 Josue Zamitiz-Ayala over 1 year ago

TI__Mastermind 23729 points

In the case of PROCESSOR-SDK-LINUX-AM57X 08.02.01.00, the corresponding IPC 3.x version is not obvious because the RTOS release and the Linux release are not coherent.

The SDKs are usually released in tandem but in this case, the Linux release is ahead and the changes in the newer SDK were not properly documented. Latest Linux release is 08.02.01.00 and the latest RTOS release is 08.01.00.09 .

When utilizing IPC for Linux 08.02.01.00 the correct version is IPC 3.51.00.00A. This version includes updates that make it compatible with the Linux kernel 5.10.

You can find the git tree for this version in the link above. ⇑

These are some additional documents that could be of aid in debugging IPC 3.x bugs:

Also search through the forum, chances are, someone else has had a similar bug.

Best,

Josue

Processors

Processors forum

[FAQ] PROCESSOR-SDK-AM57X: What IPC version for do I use when using Linux SDK 08.02.01.00?