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Because DT check when compiling become very strict in these days,
we need to add reg = <x> if it has multi port/endpoint, otherwise
it will get error or warning. But it was not so strict and/or
mandatry before.
Current code uses reg number as DAI ID, but it will use "endpoint"
reg first and use "port" reg 2nd. But it should use port number as 1st (A)
if it was used for multi connected case. There is no priority for
port/endpoint if it was not multi connected (B).
case (A)
port {
/*
* "port" and "endpoint" are using different reg number.
* It should use <x> as DAI ID, not <y> not <z>
*/
reg = <x>;
endpoint@y { reg = <y>; ... };
endpoint@z { reg = <z>; ... };
};
case (B)
port {
/*
* Both port/endpoint are using same reg numer <x>.
*/
reg = <x>;
endpoint { reg = <x>; ... };
};
It will be issue if Audio-Graph-Card is used with Multi Connection.
No issue will be happen with Audio-Graph-Card2 / Simple-Card.
This patch swtich port/endpoint priority.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87plm9fre3.wl-kuninori.morimoto.gx@renesas.com
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.