[PATCH v2 1/2] dt-bindings: leds: Add default-intensity property

[Jonas Rebmann]

Document the default-intensity property to set a default color on
multicolor LEDs.

Update pwm-multicolor to support it and update the example to turn the
LED red on boot.

Signed-off-by: Jonas Rebmann <jre@xxxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/leds/common.yaml            | 11 +++++++++++
 .../devicetree/bindings/leds/leds-pwm-multicolor.yaml         |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index f4e44b33f56d..a34de0a34b42 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -73,6 +73,17 @@ properties:
       - keep
     default: off
 
+  default-intensity:
+    description:
+      The initial intensity of the LED color component. Used only during
+      initialization. Defaults to 0. As the intensity of each sub-LED is
+      multiplied with the overall brightness, without this property on a
+      sub-LED, the leds-pwm-multicolor-LED is effectively initialized at
+      minimum brightness regardless of its linux,default-trigger and
+      default-brightness properties.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    default: 0
+
   linux,default-trigger:
     description:
       This parameter, if present, is a string defining the trigger assigned to
diff --git a/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml b/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml
index a31a202afe5c..7bf687c89411 100644
--- a/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml
+++ b/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml
@@ -45,6 +45,8 @@ properties:
 
           color: true
 
+          default-intensity: true
+
         required:
           - pwms
           - color
@@ -63,12 +65,14 @@ examples:
 
         multi-led {
             color = <LED_COLOR_ID_RGB>;
+            linux,default-trigger = "default-on";
             function = LED_FUNCTION_INDICATOR;
             max-brightness = <65535>;
 
             led-red {
                 pwms = <&pwm1 0 1000000>;
                 color = <LED_COLOR_ID_RED>;
+                default-intensity = <65535>;
             };
 
             led-green {

-- 
2.54.0.129.g3edf2eeba9