@@ -23,6 +23,11 @@ Optional properties:
Required subnodes:
+- simple-audio-card,dai-link : container for the CPU and CODEC sub-nodes
+ This container may be omitted when the
+ card has only one DAI link.
+ See the examples.
+
- simple-audio-card,cpu : CPU sub-node
- simple-audio-card,codec : CODEC sub-node
@@ -49,7 +54,7 @@ Note:
CPU and CODEC sides as we need to keep the settings identical for both ends
of the link.
-Example:
+Example 1 - single DAI link:
sound {
compatible = "simple-audio-card";
@@ -94,3 +99,38 @@ sh_fsi2: sh_fsi2@ec230000 {
interrupt-parent = <&gic>;
interrupts = <0 146 0x4>;
};
+
+Example 2 - many DAI links:
+
+sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "Cubox Audio";
+ simple-audio-card,format = "i2s";
+
+ simple-audio-card,dai-link@0 { /* I2S - HDMI */
+ simple-audio-card,cpu {
+ sound-dai = <&audio1 0>;
+ };
+ simple-audio-card,codec {
+ sound-dai = <&tda998x 0>;
+ };
+ };
+
+ simple-audio-card,dai-link@1 { /* S/PDIF - HDMI */
+ simple-audio-card,cpu {
+ sound-dai = <&audio1 1>;
+ };
+ simple-audio-card,codec {
+ sound-dai = <&tda998x 1>;
+ };
+ };
+
+ simple-audio-card,dai-link@2 { /* S/PDIF - S/PDIF */
+ simple-audio-card,cpu {
+ sound-dai = <&audio1 1>;
+ };
+ simple-audio-card,codec {
+ sound-dai = <&spdif_codec>;
+ };
+ };
+};
Many couples of CPU/CODEC DAI links may be described in the DT thanks to 'simple-audio-card,dai-link' containers. Signed-off-by: Jean-Francois Moine <moinejf@free.fr> --- .../devicetree/bindings/sound/simple-card.txt | 42 +++++++++++++++++++++- 1 file changed, 41 insertions(+), 1 deletion(-)