doc: add documentation for rohm,bd65b60 bindings

Added documentation of the devicetree bindings for the rohm,bd65b60
led driver.

Signed-off-by: Bogdan Ionescu <[email protected]>

Documentation/devicetree/bindings/leds/rohm,bd65b60-leds.yaml

@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/rohm,bd65b60-leds.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD65B60 device tree bindings
+
+maintainers:
+ - Bogdan Ionescu <[email protected]>
+
+description: |
+ BD65B60 is a white LED driver IC that integrates PWM
+ step-up DC/DC converter with boost-capability of up to
+ maximum 28.5V and current driver with drive capability of up
+ to 25mA(Typ.) maximum setting. Precise brightness can be
+ controlled at wide ranges through the external PWM pulse
+ input.
+
+properties:
+ compatible:
+ const: rohm,bd65b60
+
+patternProperties:
+ "^led-[1-2]$":
+ $ref: common.yaml#
+ unevaluatedProperties: false
+
+ properties:
+ rohm,enable:
+ description:
+ Select which leds are being controlled.
+ Values defined in <dt-bindings/leds/leds-bd65b60.h>
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ enum: [ 0, 1, 4, 5 ]
+
+ rohm,ovp:
+ description:
+ Select Over-Voltage-Portection level.
+ Values defined in <dt-bindings/leds/leds-bd65b60.h>
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ enum: [ 0, 8, 16 ]
+ default: 16
+
+required:
+ - compatible
+ - rohm,enable
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+
+ led_controler@64 {
+ compatible = "rohm,bd65b60";
+ reg = <0x64>;
+
+ backlight_led: led {
+ function = LED_FUNCTION_BACKLIGHT;
+ color = <LED_COLOR_ID_WHITE>;
+ rohm,enable = <BD65B60_ENABLE_LED1>;
+ default-state = "keep";
+ linux,default-trigger = "backlight";
+ };
+ };
+ };
+
+...