linux-loongson/Documentation/devicetree/bindings/soc/fsl/cpm_qe/fsl,qe.yaml

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

title: Freescale QUICC Engine module (QE)

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

description: |
  This represents qe module that is installed on PowerQUICC II Pro.

  NOTE:  This is an interim binding; it should be updated to fit
  in with the CPM binding later in this document.

  Basically, it is a bus of devices, that could act more or less
  as a complete entity (UCC, USB etc ). All of them should be siblings on
  the "root" qe node, using the common properties from there.
  The description below applies to the qe of MPC8360 and
  more nodes and properties would be extended in the future.  

properties:
  compatible:
    items:
      - const: fsl,qe
      - const: simple-bus

  reg:
    maxItems: 1

  ranges:
    maxItems: 1

  model:
    $ref: /schemas/types.yaml#/definitions/string
    enum: [QE, CPM, CPM2]

  bus-frequency:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: the clock frequency for QUICC Engine.

  fsl,qe-num-riscs:
    $ref: /schemas/types.yaml#/definitions/uint32
    description: define how many RISC engines the QE has.

  fsl,qe-snums:
    $ref: /schemas/types.yaml#/definitions/uint8-array
    maxItems: 28
    description:
      defining the array of serial number (SNUM) values for the virtual
      threads.

  fsl,firmware-phandle:
    $ref: /schemas/types.yaml#/definitions/phandle
    description: |
      required only if there is no fsl,qe-firmware child node

      Points to a firmware node (see "QE Firmware Node" below)
      that contains the firmware that should be uploaded for this QE.
      The compatible property for the firmware node should say,
      "fsl,qe-firmware".      

  brg-frequency:
    $ref: /schemas/types.yaml#/definitions/uint32
    description:
      the internal clock source frequency for baud-rate
      generators in Hz.

  fsl,qe-num-snums:
    $ref: /schemas/types.yaml#/definitions/uint32
    deprecated: true
    description: |
      define how many serial number(SNUM) the QE can use
      for the threads. Use fsl,qe-snums instead to not only specify the
      number of snums, but also their values.      

patternProperties:
  '^muram@[a-f0-9]+$':
    $ref: fsl,qe-muram.yaml

  '^interrupt-controller@[a-f0-9]+$':
    $ref: fsl,qe-ic.yaml

  '^si@[a-f0-9]+$':
    $ref: fsl,qe-si.yaml

  '^siram@[a-f0-9]+$':
    $ref: fsl,qe-siram.yaml

required:
  - compatible
  - reg
  - bus-frequency

allOf:
  - $ref: /schemas/simple-bus.yaml#

unevaluatedProperties: false

examples:
  - |
    qe-bus@e0100000 {
        compatible = "fsl,qe", "simple-bus";
        reg = <0xe0100000 0x480>;
        ranges = <0 0xe0100000 0x00100000>;
        #address-cells = <1>;
        #size-cells = <1>;
        brg-frequency = <0>;
        bus-frequency = <0x179a7b00>;
        fsl,qe-snums = /bits/ 8 <
            0x04 0x05 0x0c 0x0d 0x14 0x15 0x1c 0x1d
            0x24 0x25 0x2c 0x2d 0x34 0x35 0x88 0x89
            0x98 0x99 0xa8 0xa9 0xb8 0xb9 0xc8 0xc9
            0xd8 0xd9 0xe8 0xe9>;

        interrupt-controller@80 {
            compatible = "fsl,qe-ic";
            reg = <0x80 0x80>;
            #interrupt-cells = <1>;
            interrupt-controller;
            interrupts = <95 2 0 0  94 2 0 0>;
        };

        si@700 {
            compatible = "fsl,t1040-qe-si";
            reg = <0x700 0x80>;
        };

        siram@1000 {
          compatible = "fsl,t1040-qe-siram";
          reg = <0x1000 0x800>;
        };

        muram@10000 {
            compatible = "fsl,qe-muram", "fsl,cpm-muram";
            ranges = <0 0x00010000 0x0000c000>;
            #address-cells = <1>;
            #size-cells = <1>;

              data-only@0{
                  compatible = "fsl,qe-muram-data",
                              "fsl,cpm-muram-data";
                  reg = <0 0xc000>;
              };
        };
    };