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     1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/mfd/khadas,mcu.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Khadas on-board Microcontroller Device Tree Bindings
    8 
    9 maintainers:
   10   - Neil Armstrong <neil.armstrong@linaro.org>
   11 
   12 description: |
   13   Khadas embeds a microcontroller on their VIM and Edge boards adding some
   14   system feature as PWM Fan control (for VIM2 rev14 or VIM3), User memory
   15   storage, IR/Key resume control, system power LED control and more.
   16 
   17 properties:
   18   compatible:
   19     enum:
   20       - khadas,mcu # MCU revision is discoverable
   21 
   22   "#cooling-cells": # Only needed for boards having FAN control feature
   23     const: 2
   24 
   25   reg:
   26     maxItems: 1
   27 
   28 required:
   29   - compatible
   30   - reg
   31 
   32 additionalProperties: false
   33 
   34 examples:
   35   - |
   36     i2c {
   37       #address-cells = <1>;
   38       #size-cells = <0>;
   39       khadas_mcu: system-controller@18 {
   40         compatible = "khadas,mcu";
   41         reg = <0x18>;
   42         #cooling-cells = <2>;
   43       };
   44     };
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