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McBSP's data delay can be configured from 0 to 2 bit clock periods. 0 is used for DSP_B format, 1 is used for DSP_A format, 2 is unused. A data delay of 2 bit clock periods can be used to interface to 'T1 framing' devices where data stream is preceded by a 'framing bit'. On transmission, McBSP inserts a blank period (high-impedance period) before the first data bit to leave an opportunity for other devices to set this 'framing bit'. On reception, McBSP discards the 'framing bit' that precedes the data stream. Add support for the 'framing bit' according to the 'ti,T1-framing-[tx/rx]' device-tree properties. If a flag is present, the data delay is set to 2 bit clock periods regardless of the selected DAI format. Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com> Link: https://msgid.link/r/20240402071213.11671-14-bastien.curutchet@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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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.