Dear developers, I have update about these issues.12 hours testing show very fast (some seconds) appearance of byte duplication at interface spi4 (alias for ecspi5), while interfaces spi0 (alias for ecspi1) and spi1 (alias for ecspi2) work flawless (at least without any other OS load).
Looks like, ecspi5 has some different configuration in SPI or SDMA drivers or bug in SDMA script.
Any ideas? Best wishes. -- Igor Plyatov
