Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/ufs/cdns,ufshc.yaml
Extension
.yaml
Size
1402 bytes
Lines
74
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.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/ufs/cdns,ufshc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Cadence Universal Flash Storage (UFS) Controller

maintainers:
  - Jan Kotas <jank@cadence.com>

# Select only our matches, not all jedec,ufs-2.0
select:
  properties:
    compatible:
      contains:
        enum:
          - cdns,ufshc
          - cdns,ufshc-m31-16nm
  required:
    - compatible

allOf:
  - $ref: ufs-common.yaml

properties:
  compatible:
    items:
      - enum:
          - cdns,ufshc
            # CDNS UFS HC + M31 16nm PHY
          - cdns,ufshc-m31-16nm
      - const: jedec,ufs-2.0

  clocks:
    minItems: 1
    maxItems: 3

  clock-names:
    minItems: 1
    items:
      - const: core_clk
      - const: phy_clk
      - const: ref_clk

  power-domains:
    maxItems: 1

  reg:
    maxItems: 1

  dma-coherent: true

required:
  - compatible
  - clocks
  - clock-names
  - reg

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>

    ufs@fd030000 {
        compatible = "cdns,ufshc", "jedec,ufs-2.0";
        reg = <0xfd030000 0x10000>;
        interrupts = <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>;
        freq-table-hz = <0 0>, <0 0>;

Annotation

Implementation Notes