SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The mailbox module supports a software reset through the MAILBOX_SYSCONFIG[0] SOFTRESET bit. Setting this bit to 1 enables an active software reset that is functionally equivalent to a hardware reset. Reading the MAILBOX_SYSCONFIG[0] SOFTRESET bit gives the status of the software reset:
The software must ensure that the software reset completes before doing mailbox operations.