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Russell King says: ==================== Add support for slow-to-probe-PHY copper SFP modules This series, following on from the previous adding SFP+ copper support, adds support for a range of Copper SFP modules, made by a variety of companies, all of which have a Marvell 88E1111 PHY on them, but take far longer than the Marvell spec'd 15ms to start communicating on the I2C bus. Researching the Champion One 1000SFPT module reveals that TX_DISABLE is routed through a MAX1971 switching regulator and reset IC which adds a 175ms delay to releasing the 88E1111 reset. It is not known whether other modules use a similar setup, but there are a range of modules that are slow for the Marvell PHY to appear. This patch series adds support for these modules by repeatedly trying to probe the PHY for up to 600ms. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| scripts | ||
| security | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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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 Restructured Text 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.