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0cda1acfa2
This patch implements the TDR test procedure as described in "Application Note DP83TD510E Cable Diagnostics Toolkit revC", section 3.2. The procedure was tested with "draka 08 signalkabel 2x0.8mm". The reported cable length was 5 meters more for each 20 meters of actual cable length. For instance, a 20-meter cable showed as 25 meters, and a 40-meter cable showed as 50 meters. Since other parts of the diagnostics provided by this PHY (e.g., Active Link Cable Diagnostics) require accurate cable characterization to provide proper results, this tuning can be implemented in a separate patch/interface. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> changes v2: - add comments - change post silence time to 1000ms Reviewed-by: Andrew Lunn <andrew@lunn.ch> Link: https://patch.msgid.link/20240712152848.2479912-1-o.rempel@pengutronix.de Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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| certs | ||
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| Documentation | ||
| drivers | ||
| fs | ||
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| init | ||
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| ipc | ||
| kernel | ||
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| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.