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[ Upstream commit 4c4ed5e073a923fb3323022e1131cb51ad8df7a0 ] According to I2S specs audio data is sampled on the rising edge of the clock and it can change on the falling one. When operating in normal mode this SoC behaves the opposite so a clock polarity inversion is required in this case. This was tested on an OdroidC2 (Amlogic S905 SoC) board. Signed-off-by: Valerio Setti <vsetti@baylibre.com> Reviewed-by: Jerome Brunet <jbrunet@baylibre.com> Tested-by: Jerome Brunet <jbrunet@baylibre.com> Link: https://patch.msgid.link/20251007-fix-i2s-polarity-v1-1-86704d9cda10@baylibre.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.