When trying to attach to M4 upon Linux boot (autoboot=1), it fails to bind resources:
Remoteproc driver attempts to probe m4 resources, but all are waiting for pinctrl@50002000 which does not appear before remoteproc probe has timed out. I can see in the logs that pinctrl is itself waiting for other suppliers to initialize.
This issue appear only when M4 has been started from U-boot, which makes me thinking that something is not cleared properly when M4 detaches.
Would appreciate any hints.
