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The SPDIF TX (called OWA OUT in the datasheet) is available on three pins. Of those, the PH pin is unlikely to be used since it conflicts with the first Ethernet controller. The Radxa Cubie A5E exposes SPDIF TX through the PI pin group on the 40-pin GPIO header. The Orange Pi 4A exposes SPDIF TX through both the PB and PI pin groups on the 40-pin GPIO header. The PB pin alternatively would be used for I2S0 though. Add pinmux settings for both options so potential users can directly reference either one. Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Link: https://patch.msgid.link/20251027125655.793277-10-wens@kernel.org Signed-off-by: Chen-Yu Tsai <wens@kernel.org> |
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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.