e5fa3ccad3
There are some Dell SKUs that need to set the parameters of the crossover filter (biquad). Each amplifier connects to one tweeter speaker and one woofer speaker. We should control HPF/LPF to output the proper frequency for the different speakers. If the codec driver got the BQ parameters from the device property, it will apply these parameters to the hardware.
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.