Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml
Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml
File Facts
- System
- Linux kernel
- Corpus path
Documentation/devicetree/bindings/arm/sunxi/allwinner,sun4i-a10-mbus.yaml- Extension
.yaml- Size
- 3766 bytes
- Lines
- 169
- 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
dt-bindings/clock/sun50i-a64-ccu.hdt-bindings/interrupt-controller/arm-gic.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/sunxi/allwinner,sun4i-a10-mbus.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Allwinner Memory Bus (MBUS) controller
maintainers:
- Chen-Yu Tsai <wens@csie.org>
- Maxime Ripard <mripard@kernel.org>
description: |
The MBUS controller drives the MBUS that other devices in the SoC
will use to perform DMA. It also has a register interface that
allows to monitor and control the bandwidth and priorities for
masters on that bus.
Each device having to perform their DMA through the MBUS must have
the interconnects and interconnect-names properties set to the MBUS
controller and with "dma-mem" as the interconnect name.
properties:
"#interconnect-cells":
const: 1
description:
The content of the cell is the MBUS ID.
compatible:
enum:
- allwinner,sun5i-a13-mbus
- allwinner,sun8i-a33-mbus
- allwinner,sun8i-a50-mbus
- allwinner,sun8i-a83t-mbus
- allwinner,sun8i-h3-mbus
- allwinner,sun8i-r40-mbus
- allwinner,sun8i-v3s-mbus
- allwinner,sun8i-v536-mbus
- allwinner,sun20i-d1-mbus
- allwinner,sun50i-a64-mbus
- allwinner,sun50i-a100-mbus
- allwinner,sun50i-h5-mbus
- allwinner,sun50i-h6-mbus
- allwinner,sun50i-h616-mbus
- allwinner,sun50i-r329-mbus
reg:
minItems: 1
items:
- description: MBUS interconnect/bandwidth limit/PMU registers
- description: DRAM controller/PHY registers
reg-names:
minItems: 1
items:
- const: mbus
- const: dram
clocks:
minItems: 1
items:
- description: MBUS interconnect module clock
- description: DRAM controller/PHY module clock
- description: Register bus clock, shared by MBUS and DRAM
clock-names:
minItems: 1
items:
- const: mbus
- const: dram
Annotation
- Immediate include surface: `dt-bindings/clock/sun50i-a64-ccu.h`, `dt-bindings/interrupt-controller/arm-gic.h`.
- 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.