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The requirements of rk3506 codec are mainly divided into three sampling rate groups: 48/44.1/32kHz. And, the rk3506 codec has internal frequency division, the driver limits these three mclk inputs: #define MCLK_REFERENCE_8000 32768000 #define MCLK_REFERENCE_11025 45158400 #define MCLK_REFERENCE_12000 49152000 Therefore, it is necessary to add the "rockchip,mclk-no-set" property to the SAI4 to avoid switching the mclk frequency in the function of rockchip_sai_set_sysclk() after the codec configures mclk, causing the codec filter to work abnormally. Change-Id: Ic6cd0688287eb4c92c3b27bba4f60c46610c9006 Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
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.