[PATCH 1/2] dt-bindings: input: syna,rmi4: Document F1A function

[André Apitzsch via B4 Relay]

From: André Apitzsch <g...@apitzsch.eu>

In some configurations the touch controller can support touch keys.
Document the linux,keycodes property that enables those keys and
specifies the keycodes that should be used to report the key events.

Signed-off-by: André Apitzsch <g...@apitzsch.eu>
---
 .../devicetree/bindings/input/syna,rmi4.yaml         | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/Documentation/devicetree/bindings/input/syna,rmi4.yaml 
b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
index 
b522c8d3ce0db719ff379f2fefbdca79e73d027c..f369385ffaf0227412b908242de84cd7dbeb08f7
 100644
--- a/Documentation/devicetree/bindings/input/syna,rmi4.yaml
+++ b/Documentation/devicetree/bindings/input/syna,rmi4.yaml
@@ -89,6 +89,24 @@ properties:
     required:
       - reg
 
+  rmi4-f1a@1a:
+    type: object
+    additionalProperties: false
+    $ref: input.yaml#
+    description:
+      RMI4 Function 1A is for capacitive keys.
+
+    properties:
+      reg:
+        maxItems: 1
+
+      linux,keycodes:
+        minItems: 1
+        maxItems: 4
+
+    required:
+      - reg
+
 patternProperties:
   "^rmi4-f1[12]@1[12]$":
     type: object
@@ -201,6 +219,7 @@ allOf:
 
 examples:
   - |
+    #include <dt-bindings/input/linux-event-codes.h>
     #include <dt-bindings/interrupt-controller/irq.h>
 
     i2c {
@@ -234,6 +253,7 @@ examples:
 
             rmi4-f1a@1a {
                 reg = <0x1a>;
+                linux,keycodes = <KEY_BACK KEY_HOME KEY_MENU>;
             };
         };
     };

-- 
2.50.0