ASoC: audio-graph-scu-card: tidyup "prefix" parsing on Doc

audio-graph-scu-card.c is supporting "prefix" which is used to avoid
DAI naming conflict when CPU/Codec matching.
But, sound card might have multi sub-devices, and each codec might need
each prefix.

Now, ASoC is supporting snd_soc_of_parse_node_prefix(), let's support
it on audio-graph-scu-card, too. It is keeping existing DT style.

It can't support each codec's prefix if sound card had multi sub-devices
without this patch.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/audio-graph-scu-card.txt b/Documentation/devicetree/bindings/sound/audio-graph-scu-card.txt
index 441dd6f..a361088 100644 (file)
--- a/Documentation/devicetree/bindings/sound/audio-graph-scu-card.txt
+++ b/Documentation/devicetree/bindings/sound/audio-graph-scu-card.txt
@@ -77,7 +77,6 @@ Example 2. 2 CPU 1 Codec (Mixing)
                compatible = "audio-graph-scu-card";
 
                label = "sound-card";
-               prefix = "codec";
                routing = "codec Playback", "DAI0 Playback",
                          "codec Playback", "DAI1 Playback",
                          "DAI0 Capture",   "codec Capture";
@@ -90,6 +89,7 @@ Example 2. 2 CPU 1 Codec (Mixing)
        audio-codec {
                ...
 
+               audio-graph-card,prefix = "codec";
                port {
                        codec_endpoint0: endpoint {
                                remote-endpoint = <&cpu_endpoint0>;