diff --git a/Documentation/devicetree/bindings/input/adc-joystick.yaml b/Documentation/devicetree/bindings/input/adc-joystick.yaml
index 2ee04e03bc22..64d961458ac7 100644
--- a/Documentation/devicetree/bindings/input/adc-joystick.yaml
+++ b/Documentation/devicetree/bindings/input/adc-joystick.yaml
@@ -45,6 +45,7 @@ additionalProperties: false
 patternProperties:
   "^axis@[0-9a-f]+$":
     type: object
+    $ref: input.yaml#
     description: >
       Represents a joystick axis bound to the given ADC channel.
       For each entry in the io-channels list, one axis subnode with a matching
@@ -57,7 +58,6 @@ patternProperties:
         description: Index of an io-channels list entry bound to this axis.
 
       linux,code:
-        $ref: /schemas/types.yaml#/definitions/uint32
         description: EV_ABS specific event code generated by the axis.
 
       abs-range:
diff --git a/Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml b/Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
index 3399fc288afb..9700dc468b25 100644
--- a/Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
+++ b/Documentation/devicetree/bindings/input/allwinner,sun4i-a10-lradc-keys.yaml
@@ -44,14 +44,13 @@ properties:
 patternProperties:
   "^button-[0-9]+$":
     type: object
+    $ref: input.yaml#
     properties:
       label:
         $ref: /schemas/types.yaml#/definitions/string
         description: Descriptive name of the key
 
-      linux,code:
-        $ref: /schemas/types.yaml#/definitions/uint32
-        description: Keycode to emit
+      linux,code: true
 
       channel:
         $ref: /schemas/types.yaml#/definitions/uint32
diff --git a/Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml b/Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml
index a3a1e5a65306..5ea10fe7ffe9 100644
--- a/Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml
+++ b/Documentation/devicetree/bindings/input/azoteq,iqs7222.yaml
@@ -421,6 +421,7 @@ patternProperties:
     patternProperties:
       "^event-(prox|touch)$":
         type: object
+        $ref: input.yaml#
         description:
           Represents a proximity or touch event reported by the channel.
 
@@ -467,11 +468,7 @@ patternProperties:
               The IQS7222B does not feature channel-specific timeouts; the time-
               out specified for any one channel applies to all channels.
 
-          linux,code:
-            $ref: /schemas/types.yaml#/definitions/uint32
-            description:
-              Numeric key or switch code associated with the event. Specify
-              KEY_RESERVED (0) to opt out of event reporting.
+          linux,code: true
 
           linux,input-type:
             $ref: /schemas/types.yaml#/definitions/uint32
diff --git a/Documentation/devicetree/bindings/input/gpio-keys.yaml b/Documentation/devicetree/bindings/input/gpio-keys.yaml
index 7fe1966ea28a..cd07107fd5ed 100644
--- a/Documentation/devicetree/bindings/input/gpio-keys.yaml
+++ b/Documentation/devicetree/bindings/input/gpio-keys.yaml
@@ -34,7 +34,6 @@ patternProperties:
 
         linux,code:
           description: Key / Axis code to emit.
-          $ref: /schemas/types.yaml#/definitions/uint32
 
         linux,input-type:
           description:
diff --git a/Documentation/devicetree/bindings/input/input.yaml b/Documentation/devicetree/bindings/input/input.yaml
index 43d2f299c332..e3701a0bc500 100644
--- a/Documentation/devicetree/bindings/input/input.yaml
+++ b/Documentation/devicetree/bindings/input/input.yaml
@@ -23,6 +23,14 @@ properties:
       minimum: 0
       maximum: 0x2ff
 
+  linux,code:
+    description:
+      Specifies a single numeric keycode value to be used for reporting
+      button/switch events. Specify KEY_RESERVED (0) to opt out of event
+      reporting.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    maximum: 0x2ff
+
   poll-interval:
     description: Poll interval time in milliseconds.
     $ref: /schemas/types.yaml#/definitions/uint32
diff --git a/Documentation/devicetree/bindings/input/iqs269a.yaml b/Documentation/devicetree/bindings/input/iqs269a.yaml
index 9c154e5e1a91..c22f8f27913a 100644
--- a/Documentation/devicetree/bindings/input/iqs269a.yaml
+++ b/Documentation/devicetree/bindings/input/iqs269a.yaml
@@ -370,6 +370,7 @@ patternProperties:
     patternProperties:
       "^event-prox(-alt)?$":
         type: object
+        $ref: input.yaml#
         description:
           Represents a proximity event reported by the channel in response to
           a decrease in counts. Node names suffixed with '-alt' instead corre-
@@ -396,14 +397,13 @@ patternProperties:
             default: 10
             description: Specifies the threshold for the event.
 
-          linux,code:
-            $ref: /schemas/types.yaml#/definitions/uint32
-            description: Numeric key or switch code associated with the event.
+          linux,code: true
 
         additionalProperties: false
 
       "^event-touch(-alt)?$":
         type: object
+        $ref: input.yaml#
         description: Represents a touch event reported by the channel.
 
         properties:
@@ -421,14 +421,13 @@ patternProperties:
             default: 4
             description: Specifies the hysteresis for the event.
 
-          linux,code:
-            $ref: /schemas/types.yaml#/definitions/uint32
-            description: Numeric key or switch code associated with the event.
+          linux,code: true
 
         additionalProperties: false
 
       "^event-deep(-alt)?$":
         type: object
+        $ref: input.yaml#
         description: Represents a deep-touch event reported by the channel.
 
         properties:
@@ -446,9 +445,7 @@ patternProperties:
             default: 0
             description: Specifies the hysteresis for the event.
 
-          linux,code:
-            $ref: /schemas/types.yaml#/definitions/uint32
-            description: Numeric key or switch code associated with the event.
+          linux,code: true
 
         additionalProperties: false
 
diff --git a/Documentation/devicetree/bindings/input/iqs626a.yaml b/Documentation/devicetree/bindings/input/iqs626a.yaml
index 0cb736c541c9..e645521da8ba 100644
--- a/Documentation/devicetree/bindings/input/iqs626a.yaml
+++ b/Documentation/devicetree/bindings/input/iqs626a.yaml
@@ -449,6 +449,7 @@ patternProperties:
     patternProperties:
       "^event-(prox|touch|deep)(-alt)?$":
         type: object
+        $ref: input.yaml#
         description:
           Represents a proximity, touch or deep-touch event reported by the
           channel in response to a decrease in counts. Node names suffixed with
@@ -487,9 +488,7 @@ patternProperties:
               Specifies the hysteresis for the event (touch and deep-touch
               events only).
 
-          linux,code:
-            $ref: /schemas/types.yaml#/definitions/uint32
-            description: Numeric key or switch code associated with the event.
+          linux,code: true
 
           linux,input-type:
             $ref: /schemas/types.yaml#/definitions/uint32
diff --git a/Documentation/devicetree/bindings/input/iqs62x-keys.yaml b/Documentation/devicetree/bindings/input/iqs62x-keys.yaml
index 77fe3b545b35..e677e31fe8fe 100644
--- a/Documentation/devicetree/bindings/input/iqs62x-keys.yaml
+++ b/Documentation/devicetree/bindings/input/iqs62x-keys.yaml
@@ -89,15 +89,14 @@ properties:
 patternProperties:
   "^hall-switch-(north|south)$":
     type: object
+    $ref: input.yaml#
     description:
       Represents north/south-field Hall-effect sensor touch or proximity
       events. Note that north/south-field orientation is reversed on the
       IQS620AXzCSR device due to its flip-chip package.
 
     properties:
-      linux,code:
-        $ref: /schemas/types.yaml#/definitions/uint32
-        description: Numeric switch code associated with the event.
+      linux,code: true
 
       azoteq,use-prox:
         $ref: /schemas/types.yaml#/definitions/flag
diff --git a/Documentation/devicetree/bindings/input/max77650-onkey.yaml b/Documentation/devicetree/bindings/input/max77650-onkey.yaml
index 3a2ad6ec64db..48edc0c8c1dd 100644
--- a/Documentation/devicetree/bindings/input/max77650-onkey.yaml
+++ b/Documentation/devicetree/bindings/input/max77650-onkey.yaml
@@ -16,15 +16,15 @@ description: |
   The onkey controller is represented as a sub-node of the PMIC node on
   the device tree.
 
+allOf:
+  - $ref: input.yaml#
+
 properties:
   compatible:
     const: maxim,max77650-onkey
 
   linux,code:
-    $ref: /schemas/types.yaml#/definitions/uint32
-    description:
-      The key-code to be reported when the key is pressed. Defaults
-      to KEY_POWER.
+    default: 116  # KEY_POWER
 
   maxim,onkey-slide:
     $ref: /schemas/types.yaml#/definitions/flag
