dt-bindings: google,cros-ec-keyb: Introduce switches only compatible

[linux-2.6-microblaze.git] / Documentation / devicetree / bindings / input / google,cros-ec-keyb.yaml

diff --git a/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml b/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
index e8f137a..e11cbf5 100644 (file)
--- a/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
+++ b/Documentation/devicetree/bindings/input/google,cros-ec-keyb.yaml
@@ -15,14 +15,18 @@ description: |
   Google's ChromeOS EC Keyboard is a simple matrix keyboard
   implemented on a separate EC (Embedded Controller) device. It provides
   a message for reading key scans from the EC. These are then converted
-  into keycodes for processing by the kernel.
-
-allOf:
-  - $ref: "/schemas/input/matrix-keymap.yaml#"
+  into keycodes for processing by the kernel. This device also supports
+  switches/buttons like power and volume buttons.
 
 properties:
   compatible:
-    const: google,cros-ec-keyb
+    anyOf:
+      - description: ChromeOS EC with only buttons/switches
+      - items:
+          - const: google,cros-ec-keyb-switches
+      - description: ChromeOS EC with keyboard and possibly buttons/switches
+      - items:
+          - const: google,cros-ec-keyb
 
   google,needs-ghost-filter:
     description:
@@ -41,15 +45,32 @@ properties:
       where the lower 16 bits are reserved. This property is specified only
       when the keyboard has a custom design for the top row keys.
 
+dependencies:
+  function-row-phsymap: [ 'linux,keymap' ]
+  google,needs-ghost-filter: [ 'linux,keymap' ]
+
 required:
   - compatible
 
+if:
+  properties:
+    compatible:
+      contains:
+        const: google,cros-ec-keyb
+then:
+  allOf:
+    - $ref: "/schemas/input/matrix-keymap.yaml#"
+  required:
+    - keypad,num-rows
+    - keypad,num-columns
+    - linux,keymap
+
 unevaluatedProperties: false
 
 examples:
   - |
     #include <dt-bindings/input/input.h>
-    cros-ec-keyb {
+    keyboard-controller {
         compatible = "google,cros-ec-keyb";
         keypad,num-rows = <8>;
         keypad,num-columns = <13>;
@@ -113,3 +134,9 @@ examples:
             /* UP      LEFT    */
             0x070b0067 0x070c0069>;
     };
+  - |
+    /* No matrix keyboard, just buttons/switches */
+    keyboard-controller {
+        compatible = "google,cros-ec-keyb-switches";
+    };
+...