dt-bindings: leds: Add Kinetic KTD2026/2027 LED

Document Kinetic KTD2026/2027 LED driver devicetree bindings.

Signed-off-by: André Apitzsch <git@apitzsch.eu>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231002-ktd202x-v6-1-26be8eefeb88@apitzsch.eu
Signed-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/leds/kinetic,ktd202x.yaml

@@ -0,0 +1,171 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/kinetic,ktd202x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kinetic KTD2026/7 RGB/White LED Driver
+
+maintainers:
+  - André Apitzsch <git@apitzsch.eu>
+
+description: |
+  The KTD2026/7 is a RGB/White LED driver with I2C interface.
+
+  The data sheet can be found at:
+    https://www.kinet-ic.com/uploads/KTD2026-7-04h.pdf
+
+properties:
+  compatible:
+    enum:
+      - kinetic,ktd2026
+      - kinetic,ktd2027
+
+  reg:
+    maxItems: 1
+
+  vin-supply:
+    description: Regulator providing power to the "VIN" pin.
+
+  vio-supply:
+    description: Regulator providing power for pull-up of the I/O lines.
+      Note that this regulator does not directly connect to KTD2026, but is
+      needed for the correct operation of the status ("ST") and I2C lines.
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+  multi-led:
+    type: object
+    $ref: leds-class-multicolor.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      "#address-cells":
+        const: 1
+
+      "#size-cells":
+        const: 0
+
+    patternProperties:
+      "^led@[0-3]$":
+        type: object
+        $ref: common.yaml#
+        unevaluatedProperties: false
+
+        properties:
+          reg:
+            description: Index of the LED.
+            minimum: 0
+            maximum: 3
+
+        required:
+          - reg
+          - color
+
+    required:
+      - "#address-cells"
+      - "#size-cells"
+
+patternProperties:
+  "^led@[0-3]$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        description: Index of the LED.
+        minimum: 0
+        maximum: 3
+
+    required:
+      - reg
+
+required:
+  - compatible
+  - reg
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@30 {
+            compatible = "kinetic,ktd2026";
+            reg = <0x30>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            vin-supply = <&pm8916_l17>;
+            vio-supply = <&pm8916_l6>;
+
+            led@0 {
+                reg = <0>;
+                function = LED_FUNCTION_STATUS;
+                color = <LED_COLOR_ID_RED>;
+            };
+
+            led@1 {
+                reg = <1>;
+                function = LED_FUNCTION_STATUS;
+                color = <LED_COLOR_ID_GREEN>;
+            };
+
+            led@2 {
+                reg = <2>;
+                function = LED_FUNCTION_STATUS;
+                color = <LED_COLOR_ID_BLUE>;
+            };
+        };
+    };
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@30 {
+            compatible = "kinetic,ktd2026";
+            reg = <0x30>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            vin-supply = <&pm8916_l17>;
+            vio-supply = <&pm8916_l6>;
+
+            multi-led {
+                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>;
+                };
+            };
+        };
+    };