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console: T8375: document "set system console device <device> kernel" command #1820

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console: T8375: document "set system console device <device> kernel" command #1820

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11 changes: 11 additions & 0 deletions docs/configuration/system/console.rst
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Expand Up @@ -22,9 +22,20 @@ Major upgrades to the installed distribution may also require console access.
can be (see completion helper):

* ``ttySN`` - Serial device name
* ``ttyAMAN``- Serial device name for some arm64 systems
* ``ttyUSBX`` - USB Serial device name
* ``hvc0`` - Xen console

.. cfgcmd:: set system console device <device> kernel

When set, the selected serial console is used as the kernel boot console.
When removed, the kernel boot console falls back to tty0.

.. note:: Only one serial console can carry the ``kernel`` option.
When VyOS is installed via serial console, this option is set automatically
for the serial interface used during installation; usually ``ttyS0`` or
``ttyAMA0``.

.. cfgcmd:: set system console device <device> speed <speed>

The speed (baudrate) of the console device. Supported values are:
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