CRITICALITY

Low

DESCRIPTION

Ongoing transactions may be interrupted when a software reset is performed while there is still active traffic generated by the CSI-2 receiver. Interruption of ongoing transactions typically leads to a general device hang that can only be recovered by a device reset.

WORKAROUND

Software must ensure that there is no ongoing traffic before performing a software reset. In particular, the CSI-2 receiver must be reset to resume normal operation after a CSI-2 FIFO overflow. There may be remaining data in the FIFO, and therefore ongoing traffic, when the software driver receives the overflow interrupt. To avoid creating a system hang, software must either:

• Wait for several 1000s of L3 cycles before performing the software reset after an overflow or
• Use the ISS level software reset

REVISIONS IMPACTED

AM571x SR 2.1, 2.0, 1.0
AM570x SR 2.1, 2.0

DRA79x: 2.1, 2.0

TDA2Ex (23mm): 2.0, 1.0

TDA2Ex (17mm): 2.1, 2.0

AM571x: 2.1, 2.0, 1.0

AM570x: 2.1, 2.0

DRA72x: 2.0, 1.0

DRA71x: 2.1, 2.0