NXP Semiconductors i.MX 6Dual Reference Manual

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ERR003739Chip Errata for the i.MX 6Dual/6Quad and i.MX 6DualPlus/6QuadPlus, Rev. 6.1, 06/201646 NXP SemiconductorsDescription:Data linefills are returned as 4-beat bursts of 64-bit data on the AXI bus. When the first three beatof data are valid, and the fourth one aborts, then the abort is not detected by the processor logic andno abort exception is taken. The processor then behaves as if no abort is reported on the line. It canallocate the line in its Data Cache, and use the aborted data during its program flow.Conditions:The processor needs to work with Data Cache enabled, and access some cacheable memory regions(Write Back, either Shared or Non-Shared).The memory system underneath the processor needs to be able to generate aborts in this memoryregion, and must be able to generate aborts with a granularity smaller than the cache line.Projected Impact:When the erratum triggers, the processor does not detect the abort, so it might use some invalid(aborted) data without entering the Data Abort exception handler as it should normally do.Workarounds:NoneProposed Solution:No fix scheduledLinux BSP Status:Workaround possible but not implemented in the BSP, impacting functionality as described above.ERR003739 ARM: 751470—Imprecise abort on the last data of a cache linefill maynot be detected