Documentation/devicetree/bindings/mfd/khadas,mcu.yaml
Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/mfd/khadas,mcu.yaml
File Facts
- System
- Linux kernel
- Corpus path
Documentation/devicetree/bindings/mfd/khadas,mcu.yaml- Extension
.yaml- Size
- 1407 bytes
- Lines
- 63
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: configuration, schema, or hardware description
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/mfd/khadas,mcu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Khadas on-board Microcontroller
maintainers:
- Neil Armstrong <neil.armstrong@linaro.org>
description: |
Khadas embeds a microcontroller on their VIM and Edge boards adding some
system feature as PWM Fan control (for VIM2 rev14 or VIM3), User memory
storage, IR/Key resume control, system power LED control and more.
properties:
compatible:
enum:
- khadas,mcu # MCU revision is discoverable
- khadas,vim4-mcu # Different MCU variant, not discoverable
"#cooling-cells": # Only needed for boards having FAN control feature
const: 2
reg:
maxItems: 1
fan-supply:
description: Phandle to the regulator that powers the fan.
$ref: /schemas/types.yaml#/definitions/phandle
required:
- compatible
- reg
allOf:
- if:
properties:
compatible:
contains:
const: khadas,vim4-mcu
then:
required:
- fan-supply
else:
properties:
fan-supply: false
additionalProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
khadas_mcu: system-controller@18 {
compatible = "khadas,mcu";
reg = <0x18>;
#cooling-cells = <2>;
};
};
Annotation
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.