The LPDDR4 retention code is executed as part of the suspend/resume process.
When resuming, this code writes to a register that doesn't exist on the
i.MX8MN, causing the system to freeze before control is returned to Linux.
Add a patch that introduces a compile-time check for the SoC type to avoid
performing the write operation on the i.MX8MN.
https://jira.digi.com/browse/DEL-6914
Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>
The Cortex-M7 uses the UART4 as debug console, and it is
shared with the Cortex-A53. This commit disables it for the
ConnectCore 8M Nano DVK board to avoid conflicts.
Signed-off-by: Arturo Buzarra <arturo.buzarra@digi.com>
Gabriel Valcazar
Arturo Buzarra