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Add two properties to select the IN1L/DMICDAT1 and IN2R/DMICDAT2 functionality: - wlf,in1l-as-dmicdat1 - wlf,in1r-as-dmicdat2 Add a property to describe the GPIO configuration registers, that can be used to set the four multifunction pins: - wlf,gpio-cfg Add a property to describe the mic bias control registers: - wlf,micbias-cfg Add two properties to describe the Dynamic Range Controller (DRC), allowing multiple named configurations where each config sets the 4 DRC registers (R40-R43): - wlf,drc-cfg-regs - wlf,drc-cfg-names Add three properties to describe the equalizer (ReTune Mobile), allowing multiple named configurations (associated with a samplerate) that set the 24 (R134-R157) EQ registers: - wlf,retune-mobile-cfg-regs - wlf,retune-mobile-cfg-hz - wlf,retune-mobile-cfg-rates The set of names and configurations for DRC and ReTune Mobile are specified by system integrators. The names are exposed directly to userspace as options that can be selected at runtime. Adding the DRC and ReTune Mobile data to the DT eases the transition from pdata, which has handled them this way for over a decade. The parameters filled in here are almost certainly specific tuning for the hardware so it makes sense to ship them with the hardware description. Datasheet: https://statics.cirrus.com/pubs/proDatasheet/WM8904_Rev4.1.pdf Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com> Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://patch.msgid.link/20250319142059.46692-4-francesco@dolcini.it Signed-off-by: Mark Brown <broonie@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 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.