[PATCH v2 3/3] ASoC: dt-bindings: wlf,wm8960: Document routing strings (pin names)

[Jihed Chaibi <jihed.chaibi.dev@gmail.com>]

Add a list of the wm8960 pin names to the binding's description to make
it self-contained and improve the user experience for board developers.

Signed-off-by: Jihed Chaibi <jihed.chaibi.dev@gmail.com>

---
Changes in v2:
 - No changes, this file is already refering to device pins.
---
 .../devicetree/bindings/sound/wlf,wm8960.yaml | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/wlf,wm8960.yaml b/Documentation/devicetree/bindings/sound/wlf,wm8960.yaml
index 3c2b9790ffc..c8c786cb6c4 100644
--- a/Documentation/devicetree/bindings/sound/wlf,wm8960.yaml
+++ b/Documentation/devicetree/bindings/sound/wlf,wm8960.yaml
@@ -9,6 +9,28 @@ title: Wolfson WM8960 audio codec
 maintainers:
   - patches@opensource.cirrus.com
 
+description: |
+  Wolfson WM8960 audio codec
+
+  Pins on the device (for linking into audio routes):
+
+    Outputs:
+      * HP_L    : Left Headphone/Line Output
+      * HP_R    : Right Headphone/Line Output
+      * SPK_LP  : Left Speaker Output (Positive)
+      * SPK_LN  : Left Speaker Output (Negative)
+      * SPK_RP  : Right Speaker Output (Positive)
+      * SPK_RN  : Right Speaker Output (Negative)
+      * OUT3    : Mono, Left, Right or buffered midrail output for capless mode
+
+    Inputs:
+      * LINPUT1 : Left single-ended or negative differential microphone input
+      * RINPUT1 : Right single-ended or negative differential microphone input
+      * LINPUT2 : Left line input or positive differential microphone input
+      * RINPUT2 : Right line input or positive differential microphone input
+      * LINPUT3 : Left line input, positive differential microphone, or Jack Detect 2
+      * RINPUT3 : Right line input, positive differential microphone, or Jack Detect 3
+
 properties:
   compatible:
     const: wlf,wm8960
-- 
2.39.5