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AM5728: Data Read/Write error over PCIe using EDMA

Vijay HS
Intellectual 280 points

Part Number: AM5728

Hi,

We have a custom board based on AM5728. The ARM processor is connected to FPGA via PCIe bus (ARM as Root Complex and FPGA as End Point). The data read/write to FPGA BRAM happens via PCIe using EDMA with a burst size of 128 bytes.

The read/write happens successfully with 4Bytes, 8B, 32B, 64B, 128B etc.

But, the read/write fails with 65B, 95B, 100B etc. I get the following error from the kernel.

[   68.291475] omap_l3_noc 44000000.ocp: L3 application error: target 5 mod:1 (unclearable)
[   68.302496] omap_l3_noc 44000000.ocp: L3 debug error: target 5 mod:1 (unclearable)

What could be the problem? Kindly help us on this issue on priority.

Thanks & Regards
Vijay H.S