Hello,
I am using the imx7ulp in dual memory boot. The A7 and the M4 boot separately.
If I erase the M4's memory (in uboot):
U-Boot > sf probe
U-Boot > sf erase 0x0 0x30000;
The boot fails in kernel space, main errors are concerning rpmsg :
[ 18.257919] imx_rpmsg_rtc rtc-rpmsg: hctosys: unable to read the hardware clock
It seems fine to me that the A7 does not boot because the rpmsg connection is not established. But I supposed the watchdog should trigger after its period (40s). Instead, the core remains alive but in a dead-end.
I'd like my board to reset at that point and fall back to uboot.
I tried to play with the configs CONFIG_WATCHDOG_HANDLE_BOOT_ENABLED and CONFIG_WATCHDOG_OPEN_TIMEOUT but it didn't affect anything.
Any idea ?
