dt-bindings: leds: sc2731-bltc: Convert to YAML

Convert the Spreadtrum SC2731 breathing light controller bindings
to DT schema. Adjust filename to match compatible.
Signed-off-by: Stanislav Jakubek <stano.jakubek@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/ZpKM3yYKJixnRabP@standask-GA-A55M-S2HPSigned-off-by: Lee Jones <lee@kernel.org>

Documentation/devicetree/bindings/leds/leds-sc27xx-bltc.txt

-LEDs connected to Spreadtrum SC27XX PMIC breathing light controller
-
-The SC27xx breathing light controller supports to 3 outputs:
-red LED, green LED and blue LED. Each LED can work at normal
-PWM mode or breath light mode.
-
-Required properties:
-- compatible: Should be "sprd,sc2731-bltc".
-- #address-cells: Must be 1.
-- #size-cells: Must be 0.
-- reg: Specify the controller address.
-
-Required child properties:
-- reg: Port this LED is connected to.
-
-Optional child properties:
-- function: See Documentation/devicetree/bindings/leds/common.txt.
-- color: See Documentation/devicetree/bindings/leds/common.txt.
-- label: See Documentation/devicetree/bindings/leds/common.txt (deprecated).
-
-Examples:
-
-led-controller@200 {
-	compatible = "sprd,sc2731-bltc";
-	#address-cells = <1>;
-	#size-cells = <0>;
-	reg = <0x200>;
-
-	led@0 {
-		color = <LED_COLOR_ID_RED>;
-		reg = <0x0>;
-	};
-
-	led@1 {
-		color = <LED_COLOR_ID_GREEN>;
-		reg = <0x1>;
-	};
-
-	led@2 {
-		color = <LED_COLOR_ID_BLUE>;
-		reg = <0x2>;
-	};
-};

Documentation/devicetree/bindings/leds/sprd,sc2731-bltc.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/sprd,sc2731-bltc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Spreadtrum SC2731 PMIC breathing light controller
+
+maintainers:
+  - Orson Zhai <orsonzhai@gmail.com>
+  - Baolin Wang <baolin.wang7@gmail.com>
+  - Chunyan Zhang <zhang.lyra@gmail.com>
+
+description: |
+  The SC2731 breathing light controller supports up to 3 outputs:
+  red LED, green LED and blue LED. Each LED can work at normal PWM mode
+  or breath light mode.
+
+properties:
+  compatible:
+    const: sprd,sc2731-bltc
+
+  reg:
+    maxItems: 1
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 0
+
+patternProperties:
+  "^led@[0-2]$":
+    type: object
+    $ref: common.yaml#
+    unevaluatedProperties: false
+
+    properties:
+      reg:
+        minimum: 0
+        maximum: 2
+
+    required:
+      - reg
+
+required:
+  - compatible
+  - reg
+  - '#address-cells'
+  - '#size-cells'
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/leds/common.h>
+
+    pmic {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      led-controller@200 {
+        compatible = "sprd,sc2731-bltc";
+        reg = <0x200>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led@0 {
+          reg = <0x0>;
+          color = <LED_COLOR_ID_RED>;
+        };
+
+        led@1 {
+          reg = <0x1>;
+          color = <LED_COLOR_ID_GREEN>;
+        };
+
+        led@2 {
+          reg = <0x2>;
+          color = <LED_COLOR_ID_BLUE>;
+        };
+      };
+    };
+...