ASoC: simple-card: cpu_dai_name creates confusion when DT case
Basically, soc_bind_dai_link() checks
cpu_dai->dev->of_node and dai_link->cpu_of_node in DT case.
But after that it will check
cpu_dai->name and dai_link->cpu_dai_name too.
On the other hand, snd_soc_dai :: name is created by
fmt_single_name() or fmt_multiple_name().
There is no confusion if dai name is created by fmt_multiple_name(),
since cpu_dai->name is same as dai_link->cpu_dai_name.
but, if dai name is created by fmt_single_name(), CPU DAI never match.
Thus, simple-card not set dai_link->cpu_dai_name if DT case
to skip naming match on soc_bind_dai_link()
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index bdd176d..034a2b7 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -234,6 +234,17 @@
priv->codec_dai.fmt,
priv->codec_dai.sysclk);
+ /*
+ * soc_bind_dai_link() will check cpu name
+ * after of_node matching if dai_link has cpu_dai_name.
+ * but, it will never match if name was created by fmt_single_name()
+ * remove cpu_dai_name to escape name matching.
+ * see
+ * fmt_single_name()
+ * fmt_multiple_name()
+ */
+ dai_link->cpu_dai_name = NULL;
+
return 0;
}