forked from ~ljy/RK356X_SDK_RELEASE
blame | history | patch | commit | commitdiff
hc
2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/Documentation/sound/soc/codec-to-codec.rst
....@@ -104,5 +104,10 @@
104104 dai names ending with "Playback" and "Capture" respectively as dapm core
105105 will link and power those dais based on the name.
106106 
107
-Note that in current device tree there is no way to mark a dai_link
108
-as codec to codec. However, it may change in future.
107
+A dai_link in a "simple-audio-card" will automatically be detected as
108
+codec to codec when all DAIs on the link belong to codec components.
109
+The dai_link will be initialized with the subset of stream parameters
110
+(channels, format, sample rate) supported by all DAIs on the link. Since
111
+there is no way to provide these parameters in the device tree, this is
112
+mostly useful for communication with simple fixed-function codecs, such
113
+as a Bluetooth controller or cellular modem.