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547b02f74e+-- Basic Board ---------+
|+--------+ +------+|
|| CPU ch0| <--> |CodecA||
|| ch1| <-+ +------+|
|+--------+ | |
+-------------|----------+
+-- expansion board -----+
| | +------+|
| +->|CodecB||
| +------+|
+------------------------+
In above HW connection case, we intuitively think we want to handle these
as "2 Sound Cards".
card0,0: CPU-ch0 - CodecA
card1,0: CPU-ch1 - CodecB
But, we needed to handle it as "1 big Sound Card", because of
Component vs Card limitation.
card0,0: CPU-ch0 - CodecA
card0,1: CPU-ch1 - CodecB
This patch enables multi Component to handle multi Cards.
To support it, it needs
- Fill dai_args for each DAI on snd_soc_dai_driver
- Parse DT for each Component (Simple Card/Audio Graph Card)
Ex) Simple Card
rcar_sound {
...
/* Component0 */
rcar_sound,dai@0 {
...
};
/* Component1 */
rcar_sound,dai@1 {
...
};
};
Ex) Audio Graph Card/Card2
rcar_sound {
/* Component0 */
ports@0 {
...
};
/* Component1 */
ports@1 {
...
};
};
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/87tttub1m4.wl-kuninori.morimoto.gx@renesas.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 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.