Is it possible with current 2.6.1Beta1 to get to this high level scenario on a VF61?
M4 always running (low MHz ok), with one UART on, control over GPIO, one FEC+PHY on and both USB controllers on in host mode. A5 suspended as deeply as possible with DDR contents preserved
M4 able to wake up A5 to run a job in Linux, A5 suspends itself when job is done after passing results to M4
Currently remoteproc seems to require initcall_blacklist=sram_init boot option, which disables the “mem” suspend mode, but it seems that even “standby” turns off the M4 (at least FreeRTOS hellow-world.elf does no longer echo keystrokes on UART_B). “freeze” still has the M4 and UART running.
If not possible, any tips on how to modify the suspend code to leave the M4 running with some of the OCRAM region reserved for the M4?