Documentation/devicetree/bindings/soc/fsl/fsl,bman.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/soc/fsl/fsl,bman.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/soc/fsl/fsl,bman.yaml
Extension
.yaml
Size
2253 bytes
Lines
84
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.

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Annotated Snippet

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/soc/fsl/fsl,bman.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: QorIQ DPAA Buffer Manager

maintainers:
  - Frank Li <Frank.Li@nxp.com>

description:
  The Buffer Manager is part of the Data-Path Acceleration Architecture (DPAA).
  BMan supports hardware allocation and deallocation of buffers belonging to
  pools originally created by software with configurable depletion thresholds.
  This binding covers the CCSR space programming model

properties:
  compatible:
    oneOf:
      - const: fsl,bman
      - items:
          - enum:
              - fsl,ls1043a-bman
              - fsl,ls1046a-bman
          - const: fsl,bman

  reg:
    items:
      - description: |
          Registers region within the CCSR address space

          The BMan revision information is located in the BMAN_IP_REV_1/2
          registers which are located at offsets 0xbf8 and 0xbfc

  interrupts:
    items:
      - description: The error interrupt

  memory-region:
    minItems: 1
    maxItems: 2
    description:
      List of phandles referencing the BMan private memory
      nodes (described below). The bman-fqd node must be
      first followed by bman-pfdr node. Only used on ARM

      Devices connected to a BMan instance via Direct Connect Portals (DCP) must link
      to the respective BMan instance

  fsl,bman-portals:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: ref fsl,bman-port.yaml

  fsl,liodn:
    $ref: /schemas/types.yaml#/definitions/uint32-array
    description:
      See pamu.txt, PAMU property used for static LIODN assignment

  fsl,iommu-parent:
    $ref: /schemas/types.yaml#/definitions/phandle
    description:
      See pamu.txt, PAMU property used for dynamic LIODN assignment

required:
  - compatible
  - reg
  - interrupts

additionalProperties: false

Annotation

Implementation Notes