[PATCH v4 2/4] dt-bindings: leds: nxp,pca963x: add multicolor LED support

[Loic Poulain <loic.poulain@oss.qualcomm.com>]

Add support for grouping individual PCA963x channels into a multicolor
LED by introducing a multi-led@N node pattern. This follows the
convention established by other multicolor LED drivers such as
kinetic,ktd202x.

This is necessary to support and model hardware setups where multiple
PWM channels drive a single physical RGB LED.

Signed-off-by: Loic Poulain <loic.poulain@oss.qualcomm.com>
---
 .../devicetree/bindings/leds/nxp,pca963x.yaml      | 96 +++++++++++++++++++++-
 1 file changed, 94 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/leds/nxp,pca963x.yaml b/Documentation/devicetree/bindings/leds/nxp,pca963x.yaml
index 4fda602912f7a9443b8a77e46bc015e244f82e08..eccf37de51285a0dc6d28ffaba2d47a9f93d867f 100644
--- a/Documentation/devicetree/bindings/leds/nxp,pca963x.yaml
+++ b/Documentation/devicetree/bindings/leds/nxp,pca963x.yaml
@@ -74,6 +74,40 @@ patternProperties:
     required:
       - reg
 
+  "^multi-led@[0-9a-f]$":
+    type: object
+    $ref: leds-class-multicolor.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        maximum: 15
+
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      "^led@[0-9a-f]$":
+        type: object
+        $ref: common.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          reg:
+            maximum: 15
+
+        required:
+          - reg
+          - color
+
+    required:
+      - reg
+      - "#address-cells"
+      - "#size-cells"
+
 allOf:
   - if:
       properties:
@@ -84,10 +118,16 @@ allOf:
               - nxp,pca9633
     then:
       patternProperties:
-        "^led@[0-9a-f]+$":
+        "^.*led@[0-9a-f]$":
           properties:
             reg:
               maximum: 3
+        "^multi-led@[0-9a-f]$":
+          patternProperties:
+            "^led@[0-9a-f]$":
+              properties:
+                reg:
+                  maximum: 3
   - if:
       properties:
         compatible:
@@ -96,10 +136,16 @@ allOf:
               - nxp,pca9634
     then:
       patternProperties:
-        "^led@[0-9a-f]+$":
+        "^.*led@[0-9a-f]$":
           properties:
             reg:
               maximum: 7
+        "^multi-led@[0-9a-f]$":
+          patternProperties:
+            "^led@[0-9a-f]$":
+              properties:
+                reg:
+                  maximum: 7
 
 additionalProperties: false
 
@@ -143,4 +189,50 @@ examples:
         };
     };
 
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@62 {
+            compatible = "nxp,pca9633";
+            reg = <0x62>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            /* Three channels controlling one RGB LED */
+            multi-led@0 {
+                    reg = <0>;
+                    color = <LED_COLOR_ID_RGB>;
+                    function = LED_FUNCTION_STATUS;
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    led@0 {
+                            reg = <0>;
+                            color = <LED_COLOR_ID_RED>;
+                    };
+
+                    led@1 {
+                            reg = <1>;
+                            color = <LED_COLOR_ID_GREEN>;
+                    };
+
+                    led@2 {
+                            reg = <2>;
+                            color = <LED_COLOR_ID_BLUE>;
+                    };
+            };
+
+            /* Remaining channel used as a plain white LED */
+            led@3 {
+                    reg = <3>;
+                    color = <LED_COLOR_ID_WHITE>;
+                    function = LED_FUNCTION_STATUS;
+            };
+        };
+    };
+
 ...

-- 
2.34.1