SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
In addition to flushing individual commands that timeout, there are two ways to force the flushing of all commands (flush mode): software and hardware. Software flush is initiated by writing to the Flush Register (Base Address + 0x10). Hardware flush is initiated whenever the flush input is asserted.
When in flush mode:
In addition, if a command times out before it is ever accepted on the desination side of the bridge, the gasket automatically enters Software flush mode (Flush Register (Base Address + 0x10) flush field set to 4’b1111). Software may use this MMR to subsequently turn flush mode off.