Merge branch 'work.splice_read' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / Documentation / devicetree / bindings / sound / simple-card.txt

diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt
index 59d8628..c7a9393 100644 (file)
--- a/Documentation/devicetree/bindings/sound/simple-card.txt
+++ b/Documentation/devicetree/bindings/sound/simple-card.txt
@@ -22,6 +22,8 @@ Optional properties:
                                          headphones are attached.
 - simple-audio-card,mic-det-gpio       : Reference to GPIO that signals when
                                          a microphone is attached.
+- simple-audio-card,aux-devs           : List of phandles pointing to auxiliary devices, such
+                                         as amplifiers, to be added to the sound card.
 
 Optional subnodes:
 
@@ -162,3 +164,38 @@ sound {
                };
        };
 };
+
+Example 3 - route audio from IMX6 SSI2 through TLV320DAC3100 codec
+through TPA6130A2 amplifier to headphones:
+
+&i2c0 {
+       codec: tlv320dac3100@18 {
+               compatible = "ti,tlv320dac3100";
+               ...
+       }
+
+       amp: tpa6130a2@60 {
+               compatible = "ti,tpa6130a2";
+               ...
+       }
+}
+
+sound {
+       compatible = "simple-audio-card";
+       ...
+       simple-audio-card,widgets =
+               "Headphone", "Headphone Jack";
+       simple-audio-card,routing =
+               "Headphone Jack", "HPLEFT",
+               "Headphone Jack", "HPRIGHT",
+               "LEFTIN", "HPL",
+               "RIGHTIN", "HPR";
+       simple-audio-card,aux-devs = <&amp>;
+       simple-audio-card,cpu {
+               sound-dai = <&ssi2>;
+       };
+       simple-audio-card,codec {
+               sound-dai = <&codec>;
+               clocks = ...
+       };
+};