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What: /sys/class/remoteproc/.../firmware
Date: October 2016
Contact: Matt Redfearn <matt.redfearn@mips.com>
Description: Remote processor firmware
Reports the name of the firmware currently loaded to the
remote processor.
To change the running firmware, ensure the remote processor is
stopped (using /sys/class/remoteproc/.../state) and write a new filename.
What: /sys/class/remoteproc/.../state
Date: October 2016
Contact: Matt Redfearn <matt.redfearn@mips.com>
Description: Remote processor state
Reports the state of the remote processor, which will be one of:
"offline"
"suspended"
"running"
"crashed"
"invalid"
"offline" means the remote processor is powered off.
"suspended" means that the remote processor is suspended and
must be woken to receive messages.
"running" is the normal state of an available remote processor
"crashed" indicates that a problem/crash has been detected on
the remote processor.
"invalid" is returned if the remote processor is in an
unknown state.
Writing this file controls the state of the remote processor.
The following states can be written:
"start"
"stop"
Writing "start" will attempt to start the processor running the
firmware indicated by, or written to,
/sys/class/remoteproc/.../firmware. The remote processor should
transition to "running" state.
Writing "stop" will attempt to halt the remote processor and
return it to the "offline" state.
What: /sys/class/remoteproc/.../name
Date: August 2019
KernelVersion: 5.4
Contact: Suman Anna <s-anna@ti.com>
Description: Remote processor name
Reports the name of the remote processor. This can be used by
userspace in exactly identifying a remote processor and ease
up the usage in modifying the 'firmware' or 'state' files.
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