Documentation/ABI/testing/sysfs-class-remoteproc

   1 What:           /sys/class/remoteproc/.../firmware
   2 Date:           October 2016
   3 Contact:        Matt Redfearn <matt.redfearn@mips.com>
   4 Description:    Remote processor firmware
   5
   6                 Reports the name of the firmware currently loaded to the
   7                 remote processor.
   8
   9                 To change the running firmware, ensure the remote processor is
  10                 stopped (using /sys/class/remoteproc/.../state) and write a new filename.
  11
  12 What:           /sys/class/remoteproc/.../state
  13 Date:           October 2016
  14 Contact:        Matt Redfearn <matt.redfearn@mips.com>
  15 Description:    Remote processor state
  16
  17                 Reports the state of the remote processor, which will be one of:
  18
  19                 "offline"
  20                 "suspended"
  21                 "running"
  22                 "crashed"
  23                 "invalid"
  24
  25                 "offline" means the remote processor is powered off.
  26
  27                 "suspended" means that the remote processor is suspended and
  28                 must be woken to receive messages.
  29
  30                 "running" is the normal state of an available remote processor
  31
  32                 "crashed" indicates that a problem/crash has been detected on
  33                 the remote processor.
  34
  35                 "invalid" is returned if the remote processor is in an
  36                 unknown state.
  37
  38                 Writing this file controls the state of the remote processor.
  39                 The following states can be written:
  40
  41                 "start"
  42                 "stop"
  43
  44                 Writing "start" will attempt to start the processor running the
  45                 firmware indicated by, or written to,
  46                 /sys/class/remoteproc/.../firmware. The remote processor should
  47                 transition to "running" state.
  48
  49                 Writing "stop" will attempt to halt the remote processor and
  50                 return it to the "offline" state.