From: Sven Schwermer <sven.schwermer@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
This allows to group multiple PWM-connected monochrome LEDs into
multicolor LEDs, e.g. RGB LEDs.
Signed-off-by: Sven Schwermer <sven.schwermer@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
Notes:
Changes in v6:
* Fix device tree binding schema
Changes in v5:
* (no changes)
Changes in v4:
* (no changes)
Changes in v3:
* Remove multi-led unit name
.../bindings/leds/leds-pwm-multicolor.yaml | 69 +++++++++++++++++++
1 file changed, 69 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml
diff --git a/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml b/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml
new file mode 100644
index 000000000000..f7ce29c8ae63
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-pwm-multicolor.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-pwm-multicolor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Multi-color LEDs connected to PWM
+
+maintainers:
+ - Sven Schwermer <sven.schwermer@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
+
+description: |
+ This driver combines several monochrome PWM LEDs into one multi-color
+ LED using the multicolor LED class.
+
+properties:
+ compatible:
+ const: pwm-leds-multicolor
+ multi-led:
+ type: object
+ patternProperties:
+ "^led-[0-9a-z]+$":
+ type: object
+ $ref: common.yaml#
+ properties:
+ pwms:
+ maxItems: 1
+ pwm-names: true
+ color: true
+ required:
+ - pwms
+ - color
+ additionalProperties: false
+required:
+ - compatible
+allOf:
+ - $ref: leds-class-multicolor.yaml#
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/leds/common.h>
+
+ rgb-led {
+ compatible = "pwm-leds-multicolor";
+
+ multi-led {
+ color = <LED_COLOR_ID_RGB>;
+ function = LED_FUNCTION_INDICATOR;
+ max-brightness = <65535>;
+
+ led-red {
+ pwms = <&pwm1 0 1000000>;
+ color = <LED_COLOR_ID_RED>;
+ };
+
+ led-green {
+ pwms = <&pwm2 0 1000000>;
+ color = <LED_COLOR_ID_GREEN>;
+ };
+
+ led-blue {
+ pwms = <&pwm3 0 1000000>;
+ color = <LED_COLOR_ID_BLUE>;
+ };
+ };
+ };
+
+...
--
2.35.1
