ASoC: Document wm8994 endpoints

The wm8994 exposes several inputs and outputs that can be used by
machine drivers in their routing.  Add them to the documention so
they don't have been duplicated in any machine drivers bindings.

Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Link: https://lore.kernel.org/r/BN6PR04MB066019A8783D22F1C4A588B7A39F0@BN6PR04MB0660.namprd04.prod.outlook.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/wm8994.txt b/Documentation/devicetree/bindings/sound/wm8994.txt
index 367b58c..8fa9475 100644 (file)
--- a/Documentation/devicetree/bindings/sound/wm8994.txt
+++ b/Documentation/devicetree/bindings/sound/wm8994.txt
@@ -68,6 +68,29 @@ Optional properties:
   - wlf,csnaddr-pd : If present enable the internal pull-down resistor on
     the CS/ADDR pin.
 
+Pins on the device (for linking into audio routes):
+
+  * IN1LN
+  * IN1LP
+  * IN2LN
+  * IN2LP:VXRN
+  * IN1RN
+  * IN1RP
+  * IN2RN
+  * IN2RP:VXRP
+  * SPKOUTLP
+  * SPKOUTLN
+  * SPKOUTRP
+  * SPKOUTRN
+  * HPOUT1L
+  * HPOUT1R
+  * HPOUT2P
+  * HPOUT2N
+  * LINEOUT1P
+  * LINEOUT1N
+  * LINEOUT2P
+  * LINEOUT2N
+
 Example:
 
 wm8994: codec@1a {