@@ -32,7 +32,9 @@ Required properties:
Optional properties:
- pa-gpios: GPIO used to control external amplifier.
+-----------------------
Example: Single DAI case
+-----------------------
sound_card {
compatible = "audio-graph-card";
@@ -61,7 +63,9 @@ Example: Single DAI case
};
};
+-----------------------
Example: Multi DAI case
+-----------------------
sound-card {
compatible = "audio-graph-card";
@@ -104,6 +108,7 @@ Example: Multi DAI case
...
ports {
cpu_port0: port@0 {
+ reg = <0>;
cpu_endpoint0: endpoint {
remote-endpoint = <&codec0_endpoint>;
@@ -112,6 +117,7 @@ Example: Multi DAI case
};
};
cpu_port1: port@1 {
+ reg = <1>;
cpu_endpoint1: endpoint {
remote-endpoint = <&codec1_endpoint>;
@@ -120,6 +126,7 @@ Example: Multi DAI case
};
};
cpu_port2: port@2 {
+ reg = <2>;
cpu_endpoint2: endpoint {
remote-endpoint = <&codec2_endpoint>;
@@ -130,3 +137,213 @@ Example: Multi DAI case
};
};
+
+-----------------------
+Example: Sampling Rate Conversion
+-----------------------
+
+ sound_card {
+ compatible = "audio-graph-card";
+
+ label = "sound-card";
+ prefix = "codec";
+ routing = "codec Playback", "DAI0 Playback",
+ "DAI0 Capture", "codec Capture";
+ convert-rate = <48000>;
+
+ dais = <&cpu_port>;
+ };
+
+ audio-codec {
+ ...
+ port {
+ codec_endpoint: endpoint {
+ remote-endpoint = <&cpu_endpoint>;
+ };
+ };
+ };
+
+ dai-controller {
+ ...
+ cpu_port: port {
+ cpu_endpoint: endpoint {
+ remote-endpoint = <&codec_endpoint>;
+
+ dai-format = "left_j";
+ ...
+ };
+ };
+ };
+
+-----------------------
+Example: 2 CPU 1 Codec (Mixing)
+-----------------------
+
+ sound_card {
+ compatible = "audio-graph-card";
+
+ label = "sound-card";
+ routing = "codec Playback", "DAI0 Playback",
+ "codec Playback", "DAI1 Playback",
+ "DAI0 Capture", "codec Capture";
+
+ dais = <&cpu_port>;
+ };
+
+ audio-codec {
+ ...
+
+ audio-graph-card,prefix = "codec";
+ audio-graph-card,convert-rate = <48000>;
+ port {
+ reg = <0>;
+ codec_endpoint0: endpoint@0 {
+ remote-endpoint = <&cpu_endpoint0>;
+ };
+ codec_endpoint1: endpoint@1 {
+ remote-endpoint = <&cpu_endpoint1>;
+ };
+ };
+ };
+
+ dai-controller {
+ ...
+ cpu_port: port {
+ cpu_endpoint0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&codec_endpoint0>;
+
+ dai-format = "left_j";
+ ...
+ };
+ cpu_endpoint1: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&codec_endpoint1>;
+
+ dai-format = "left_j";
+ ...
+ };
+ };
+ };
+
+-----------------------
+Example: Multi DAI with DPCM
+-----------------------
+
+ CPU0 ------ ak4613
+ CPU1 ------ HDMI
+ CPU2 ------ PCM3168A-p /* DPCM 1ch/2ch */
+ CPU3 --/ /* DPCM 3ch/4ch */
+ CPU4 --/ /* DPCM 5ch/6ch */
+ CPU5 --/ /* DPCM 7ch/8ch */
+ CPU6 ------ PCM3168A-c
+
+ sound_card: sound {
+ compatible = "audio-graph-card";
+
+ label = "sound-card";
+
+ routing = "pcm3168a Playback", "DAI2 Playback",
+ "pcm3168a Playback", "DAI3 Playback",
+ "pcm3168a Playback", "DAI4 Playback",
+ "pcm3168a Playback", "DAI5 Playback";
+
+ dais = <&snd_port0 /* ak4613 */
+ &snd_port1 /* HDMI0 */
+ &snd_port2 /* pcm3168a playback */
+ &snd_port3 /* pcm3168a capture */
+ >;
+ };
+
+ ak4613: codec@10 {
+ ...
+ port {
+ ak4613_endpoint: endpoint {
+ remote-endpoint = <&rsnd_endpoint0>;
+ };
+ };
+ };
+
+ pcm3168a: audio-codec@44 {
+ ...
+ audio-graph-card,prefix = "pcm3168a";
+ audio-graph-card,convert-channels = <8>; /* TDM Split */
+ ports {
+ port@0 {
+ reg = <0>;
+ pcm3168a_endpoint_p1: endpoint@1 {
+ remote-endpoint = <&rsnd_endpoint2>;
+ ...
+ };
+ pcm3168a_endpoint_p2: endpoint@2 {
+ remote-endpoint = <&rsnd_endpoint3>;
+ ...
+ };
+ pcm3168a_endpoint_p3: endpoint@3 {
+ remote-endpoint = <&rsnd_endpoint4>;
+ ...
+ };
+ pcm3168a_endpoint_p4: endpoint@4 {
+ remote-endpoint = <&rsnd_endpoint5>;
+ ...
+ };
+ };
+ port@1 {
+ reg = <1>;
+ pcm3168a_endpoint_c: endpoint {
+ remote-endpoint = <&rsnd_endpoint6>;
+ ...
+ };
+ };
+ };
+ };
+
+ &sound {
+ ports {
+ snd_port0: port@0 {
+ reg = <0>;
+ rsnd_endpoint0: endpoint {
+ remote-endpoint = <&ak4613_endpoint>;
+ ...
+ };
+ };
+ snd_port1: port@1 {
+ reg = <1>;
+ rsnd_endpoint1: endpoint {
+ remote-endpoint = <&dw_hdmi0_snd_in>;
+ ...
+ };
+ };
+ snd_port2: port@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ rsnd_endpoint2: endpoint@2 {
+ reg = <2>;
+ remote-endpoint = <&pcm3168a_endpoint_p1>;
+ ...
+ };
+ rsnd_endpoint3: endpoint@3 {
+ reg = <3>;
+ remote-endpoint = <&pcm3168a_endpoint_p2>;
+ ...
+ };
+ rsnd_endpoint4: endpoint@4 {
+ reg = <4>;
+ remote-endpoint = <&pcm3168a_endpoint_p3>;
+ ...
+ };
+ rsnd_endpoint5: endpoint@5 {
+ reg = <5>;
+ remote-endpoint = <&pcm3168a_endpoint_p4>;
+ ...
+ };
+ };
+ snd_port3: port@6 {
+ reg = <6>;
+ rsnd_endpoint6: endpoint {
+ remote-endpoint = <&pcm3168a_endpoint_c>;
+ ...
+ };
+ };
+ };
+ };