Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml

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System
Linux kernel
Corpus path
Documentation/devicetree/bindings/net/fsl,fman-dtsec.yaml
Extension
.yaml
Size
4948 bytes
Lines
168
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/net/fsl,fman-dtsec.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NXP FMan MAC

maintainers:
  - Madalin Bucur <madalin.bucur@nxp.com>

description: |
  Each FMan has several MACs, each implementing an Ethernet interface. Earlier
  versions of FMan used the Datapath Three Speed Ethernet Controller (dTSEC) for
  10/100/1000 MBit/s speeds, and the 10-Gigabit Ethernet Media Access Controller
  (10GEC) for 10 Gbit/s speeds. Later versions of FMan use the Multirate
  Ethernet Media Access Controller (mEMAC) to handle all speeds.

properties:
  compatible:
    enum:
      - fsl,fman-dtsec
      - fsl,fman-xgec
      - fsl,fman-memac

  cell-index:
    maximum: 64
    description: |
      FManV2:
      register[bit]           MAC             cell-index
      ============================================================
      FM_EPI[16]              XGEC            8
      FM_EPI[16+n]            dTSECn          n-1
      FM_NPI[11+n]            dTSECn          n-1
              n = 1,..,5

      FManV3:
      register[bit]           MAC             cell-index
      ============================================================
      FM_EPI[16+n]            mEMACn          n-1
      FM_EPI[25]              mEMAC10         9

      FM_NPI[11+n]            mEMACn          n-1
      FM_NPI[10]              mEMAC10         9
      FM_NPI[11]              mEMAC9          8
              n = 1,..8

      FM_EPI and FM_NPI are located in the FMan memory map.

      2. SoC registers:

      - P2041, P3041, P4080 P5020, P5040:
      register[bit]           FMan            MAC             cell
                              Unit                            index
      ============================================================
      DCFG_DEVDISR2[7]        1               XGEC            8
      DCFG_DEVDISR2[7+n]      1               dTSECn          n-1
      DCFG_DEVDISR2[15]       2               XGEC            8
      DCFG_DEVDISR2[15+n]     2               dTSECn          n-1
              n = 1,..5

      - T1040, T2080, T4240, B4860:
      register[bit]                   FMan    MAC             cell
                                      Unit                    index
      ============================================================
      DCFG_CCSR_DEVDISR2[n-1]         1       mEMACn          n-1
      DCFG_CCSR_DEVDISR2[11+n]        2       mEMACn          n-1
              n = 1,..6,9,10

      EVDISR, DCFG_DEVDISR2 and DCFG_CCSR_DEVDISR2 are located in

Annotation

Implementation Notes