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feat(linux): Add ICSSM doc support for link speed and duplexity config #521

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36 changes: 36 additions & 0 deletions source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU-ICSS_Ethernet.rst
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Expand Up @@ -523,6 +523,42 @@
ip link set eth0 promisc on
Configure interface (ethtool)

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GitHub Actions / vale 

[vale] reported by reviewdog 🐶
[RedHat.Spelling] Verify the word 'ethtool'. It is not in the American English spelling dictionary used by Vale.

Raw Output:
{"message": "[RedHat.Spelling] Verify the word 'ethtool'. It is not in the American English spelling dictionary used by Vale.", "location": {"path": "source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU-ICSS_Ethernet.rst", "range": {"start": {"line": 526, "column": 22}}}, "severity": "WARNING"}
=============================

``ethtool -s|--change DEVNAME`` command can be used for configuring interface generic options.
The main purpose of this command is to configure physical link settings (PHY) like speed, duplex, auto-negotiation.

The PRU Ethernet driver forwards the following commands to the PHY driver:

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[vale] reported by reviewdog 🐶
[RedHat.Definitions] Define acronyms and abbreviations (such as 'PHY') on first occurrence if they're likely to be unfamiliar.

Raw Output:
{"message": "[RedHat.Definitions] Define acronyms and abbreviations (such as 'PHY') on first occurrence if they're likely to be unfamiliar.", "location": {"path": "source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU-ICSS_Ethernet.rst", "range": {"start": {"line": 532, "column": 64}}}, "severity": "INFO"}

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GitHub Actions / vale 

[vale] reported by reviewdog 🐶
[RedHat.Definitions] Define acronyms and abbreviations (such as 'PRU') on first occurrence if they're likely to be unfamiliar.

Raw Output:
{"message": "[RedHat.Definitions] Define acronyms and abbreviations (such as 'PRU') on first occurrence if they're likely to be unfamiliar.", "location": {"path": "source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU-ICSS_Ethernet.rst", "range": {"start": {"line": 532, "column": 5}}}, "severity": "INFO"}

.. code-block:: console
# ethtool -s <dev>
[ speed %d ]
[ duplex half|full ]
[ autoneg on|off ]
[ wol p|u|m|b|a|g|s|d... ]
[ sopass %x:%x:%x:%x:%x:%x ]
.. ifconfig:: CONFIG_part_variant in ('AM335X')

.. note::

Half Duplex is only supported for `pruss_emac0` interface. Configuring `pruss_emac1` in half duplex
is not functional. This is a known issue that is being tracked separately.

Below is an example of forcing link speed to 100M/10M and duplexity to full:

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GitHub Actions / vale 

[vale] reported by reviewdog 🐶
[RedHat.Spelling] Verify the word 'duplexity'. It is not in the American English spelling dictionary used by Vale.

Raw Output:
{"message": "[RedHat.Spelling] Verify the word 'duplexity'. It is not in the American English spelling dictionary used by Vale.", "location": {"path": "source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU-ICSS_Ethernet.rst", "range": {"start": {"line": 550, "column": 59}}}, "severity": "WARNING"}

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[vale] reported by reviewdog 🐶
[RedHat.Slash] Use either 'or' or 'and' in '100M/10M'

Raw Output:
{"message": "[RedHat.Slash] Use either 'or' or 'and' in '100M/10M'", "location": {"path": "source/linux/Foundational_Components/PRU-ICSS/Linux_Drivers/PRU-ICSS_Ethernet.rst", "range": {"start": {"line": 550, "column": 46}}}, "severity": "WARNING"}

.. code-block:: console
# ethtool -s eth0 duplex half speed 100
[ 169.620032] prueth pruss-eth eth0: Link is Down
[ 171.727166] prueth pruss-eth eth0: Link is Up - 100Mbps/Half - flow control off
# ethtool -s eth0 duplex half speed 10
[ 266.901225] prueth pruss-eth eth0: Link is Down
[ 269.018796] prueth pruss-eth eth0: Link is Up - 10Mbps/Half - flow control off
PTP Ordinary Clock
==================

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