dt-bindings: leds: Add LED1202 LED Controller

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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/st,led1202.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ST LED1202 LED controllers
+
+maintainers:
+  - Vicentiu Galanopulo <[email protected]>
+
+description:
+  The LED1202 is a 12-channel low quiescent current LED controller
+  programmable via I2C; The output current can be adjusted separately
+  for each channel by 8-bit analog and 12-bit digital dimming control.
+
+  Datasheet available at
+  https://www.st.com/en/power-management/led1202.html
+
+properties:
+  compatible:
+    enum:
+      - st,led1202
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^led@[0-9a-f]+$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        minimum: 0
+        maximum: 11
+
+    required:
+      - reg
+
+additionalProperties: true
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@58 {
+            compatible = "st,led1202";
+            reg = <0x58>;
+            address-cells = <1>;
+            size-cells = <0>;
+
+            led@0 {
+                reg = <0>;
+                label = "led1_r";
+                active = <1>;
+            };
+
+            led@1 {
+                reg = <1>;
+                label = "led1_g";
+                active = <1>;
+            };
+
+            led@2 {
+                reg = <2>;
+                label = "led1_b";
+                active = <1>;
+            };
+
+            led@3 {
+                reg = <3>;
+                label = "led2_r";
+                active = <1>;
+            };
+
+            led@4 {
+                reg = <4>;
+                label = "led2_g";
+                active = <1>;
+            };
+
+            led@5 {
+                reg = <5>;
+                label = "led2_b";
+                active = <1>;
+            };
+
+            led@6 {
+                reg = <6>;
+                label = "led3_r";
+                active = <1>;
+            };
+
+            led@7 {
+                reg = <7>;
+                label = "led3_g";
+                active = <1>;
+            };
+
+            led@8 {
+                reg = <8>;
+                label = "led3_b";
+                active = <1>;
+            };
+
+            led@9 {
+                reg = <9>;
+                active = <0>;
+            };
+
+            led@a {
+                reg = <10>;
+                active = <0>;
+            };
+
+            led@b {
+                reg = <11>;
+                active = <0>;
+            };
+        };
+    };
+
+...