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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 is counting "endpoint" to get DAI ID, but it should count
"port" instead, otherwise strange ID will be used for DAI if it was multi
connected case (A). There is no issue if it was not multi connected (B).
One note is that this code will be used if neither port/endpoint doesn't
have reg = <x> property on DT.
case (A)
/* This should be handled as DAI-0 */
port@0 {
endpoint@0 { } /* It will be DAI-0 by endpoint count */
endpoint@1 { } /* It will be DAI-1 by endpoint count */
};
/* This should be handled as DAI-1 */
port@1 {
endpoint { } /* It will be DAI-2 by endpoint count */
};
case (B)
/* both endpoint cound and port count are same */
port@0 {
endpoint { ... }
};
port@1 {
endpoint { ... }
};
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 uses for_each_of_graph_port() instead of
for_each_endpoint_of_node(), and thus, we can use "break" to quit
from loop. Because for_each_of_graph_port() uses __free(device_node)
inside.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87o71tfrdz.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.