[PATCH 4/5] dt-bindings: input: touchscreen: msg2638: Document keys support

[Vincent Knecht <vincent.knecht@xxxxxxxxxx>]

Document optional linux,keycodes support.

Signed-off-by: Vincent Knecht <vincent.knecht@xxxxxxxxxx>
---
 .../devicetree/bindings/input/touchscreen/mstar,msg2638.yaml  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml b/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml
index 2fb7e01bb65a..af4f954de958 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml
+++ b/Documentation/devicetree/bindings/input/touchscreen/mstar,msg2638.yaml
@@ -36,6 +36,10 @@ properties:
   touchscreen-size-x: true
   touchscreen-size-y: true
 
+  linux,keycodes:
+    minItems: 1
+    maxItems: 4
+
 additionalProperties: false
 
 required:
-- 
2.31.1