[PATCH v3 09/10] dt-bindings: input: microchip,cap11xx: Add CAP1114 support

[Jun Yan]

CAP1114 is a 14-channel capacitive touch sensor with 11 LED outputs
and hardware reset support.

Add the compatible string for CAP1114, add its datasheet URL,
update the maximum of LED channel reg, and add constraint for
linux,keycodes.

Previously, the LED reg property had a default maximum of 7 for CAP1188.
With the addition of CAP1114, the default maximum is now 11.
An if-then constraint is added to limit the LED count for CAP1188.

Update description for microchip,input-threshold: CAP1114 only provides
eight threshold entries, which does not match its total channel count.

CAP1114 does not support microchip,signal-guard and
microchip,calib-sensitivity.

Add CAP1114 to the unsupported enum list.

Signed-off-by: Jun Yan <jerrysteve1101@xxxxxxxxx>
---
 .../bindings/input/microchip,cap11xx.yaml     | 37 ++++++++++++++++++-
 1 file changed, 35 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml b/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
index 778ec6d659a8..153099d59d1a 100644
--- a/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
+++ b/Documentation/devicetree/bindings/input/microchip,cap11xx.yaml
@@ -12,6 +12,7 @@ description: |
 
   For more product information please see the links below:
     CAP1106: https://ww1.microchip.com/downloads/en/DeviceDoc/00001624B.pdf
+    CAP1114: https://ww1.microchip.com/downloads/en/DeviceDoc/00002444A.pdf
     CAP1126: https://ww1.microchip.com/downloads/en/DeviceDoc/00001623B.pdf
     CAP1188: https://ww1.microchip.com/downloads/en/DeviceDoc/00001620C.pdf
     CAP1203: https://ww1.microchip.com/downloads/en/DeviceDoc/00001572B.pdf
@@ -26,6 +27,7 @@ properties:
   compatible:
     enum:
       - microchip,cap1106
+      - microchip,cap1114
       - microchip,cap1126
       - microchip,cap1188
       - microchip,cap1203
@@ -62,7 +64,7 @@ properties:
 
   linux,keycodes:
     minItems: 3
-    maxItems: 8
+    maxItems: 14
     description: |
       Specifies an array of numeric keycode values to
       be used for the channels. If this property is
@@ -122,6 +124,8 @@ properties:
       is required for a touch to be registered, making the touch sensor less
       sensitive.
       The number of entries must correspond to the number of channels.
+      CAP1114 is an exception where channels 8~14 reuse the eighth entry's
+      threshold, so counts differ.
 
   microchip,calib-sensitivity:
     $ref: /schemas/types.yaml#/definitions/uint32-array
@@ -149,7 +153,7 @@ patternProperties:
       reg:
         description: LED channel number
         minimum: 0
-        maximum: 7
+        maximum: 10
 
       label: true
 
@@ -178,6 +182,21 @@ allOf:
       properties:
         reset-gpios: false
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - microchip,cap1114
+    then:
+      properties:
+        linux,keycodes:
+          minItems: 14
+    else:
+      properties:
+        linux,keycodes:
+          maxItems: 8
+
   - if:
       properties:
         compatible:
@@ -205,12 +224,26 @@ allOf:
             reg:
               maximum: 1
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - microchip,cap1188
+    then:
+      patternProperties:
+        "^led@":
+          properties:
+            reg:
+              maximum: 7
+
   - if:
       properties:
         compatible:
           contains:
             enum:
               - microchip,cap1106
+              - microchip,cap1114
               - microchip,cap1126
               - microchip,cap1188
               - microchip,cap1203
-- 
2.54.0