[17] VPR: Bus faults during hibernate save sequence are ignored

nRF54L15 Revision 2 Errata

This anomaly applies to Revision 2, build codes QFAA-C00, CAAA-C00, QDAA-C00, QGAA-C00.

It was inherited from the previous SoC revision Revision 1.

Symptoms

Bus error responses during hibernate save are ignored.

Conditions

A bus fault occurs during the hibernate save sequence.

Consequences

The VPR CPU behavior is undefined.

Workaround

Before entering the lowest power state on VPR, ensure that the VPR context save memory register (VPRSAVEADDR) is set to memory address accessible to VPR.