Documentation / devicetree / bindings / pci / mediatek,mt7621-pcie.yaml


Based on kernel version 6.10. Page generated on 2024-07-16 09:00 EST.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/mediatek,mt7621-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: MediaTek MT7621 PCIe controller

maintainers:
  - Sergio Paracuellos <sergio.paracuellos@gmail.com>

description: |+
  MediaTek MT7621 PCIe subsys supports a single Root Complex (RC)
  with 3 Root Ports. Each Root Port supports a Gen1 1-lane Link

allOf:
  - $ref: /schemas/pci/pci-host-bridge.yaml#

properties:
  compatible:
    const: mediatek,mt7621-pci

  reg:
    items:
      - description: host-pci bridge registers
      - description: pcie port 0 RC control registers
      - description: pcie port 1 RC control registers
      - description: pcie port 2 RC control registers

  ranges:
    maxItems: 2

patternProperties:
  '^pcie@[0-2],0$':
    type: object
    $ref: /schemas/pci/pci-pci-bridge.yaml#

    properties:
      reg:
        maxItems: 1

      resets:
        maxItems: 1

      clocks:
        maxItems: 1

      phys:
        maxItems: 1

      phy-names:
        pattern: '^pcie-phy[0-2]$'

    required:
      - "#interrupt-cells"
      - interrupt-map-mask
      - interrupt-map
      - resets
      - clocks
      - phys
      - phy-names
      - ranges

    unevaluatedProperties: false

required:
  - compatible
  - reg
  - ranges
  - "#interrupt-cells"
  - interrupt-map-mask
  - interrupt-map
  - reset-gpios

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/gpio/gpio.h>
    #include <dt-bindings/interrupt-controller/mips-gic.h>
 
    pcie: pcie@1e140000 {
        compatible = "mediatek,mt7621-pci";
        reg = <0x1e140000 0x100>,
              <0x1e142000 0x100>,
              <0x1e143000 0x100>,
              <0x1e144000 0x100>;
 
        #address-cells = <3>;
        #size-cells = <2>;
        pinctrl-names = "default";
        pinctrl-0 = <&pcie_pins>;
        device_type = "pci";
        ranges = <0x02000000 0 0x60000000 0x60000000 0 0x10000000>,  /* pci memory */
                 <0x01000000 0 0x1e160000 0x1e160000 0 0x00010000>;  /* io space */
        #interrupt-cells = <1>;
        interrupt-map-mask = <0xF800 0 0 0>;
        interrupt-map = <0x0000 0 0 0 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>,
                        <0x0800 0 0 0 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>,
                        <0x1000 0 0 0 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
        reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
 
        pcie@0,0 {
            reg = <0x0000 0 0 0 0>;
            #address-cells = <3>;
            #size-cells = <2>;
            device_type = "pci";
            #interrupt-cells = <1>;
            interrupt-map-mask = <0 0 0 0>;
            interrupt-map = <0 0 0 0 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>;
            resets = <&rstctrl 24>;
            clocks = <&clkctrl 24>;
            phys = <&pcie0_phy 1>;
            phy-names = "pcie-phy0";
            ranges;
        };
 
        pcie@1,0 {
            reg = <0x0800 0 0 0 0>;
            #address-cells = <3>;
            #size-cells = <2>;
            device_type = "pci";
            #interrupt-cells = <1>;
            interrupt-map-mask = <0 0 0 0>;
            interrupt-map = <0 0 0 0 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>;
            resets = <&rstctrl 25>;
            clocks = <&clkctrl 25>;
            phys = <&pcie0_phy 1>;
            phy-names = "pcie-phy1";
            ranges;
        };
 
        pcie@2,0 {
            reg = <0x1000 0 0 0 0>;
            #address-cells = <3>;
            #size-cells = <2>;
            device_type = "pci";
            #interrupt-cells = <1>;
            interrupt-map-mask = <0 0 0 0>;
            interrupt-map = <0 0 0 0 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
            resets = <&rstctrl 26>;
            clocks = <&clkctrl 26>;
            phys = <&pcie2_phy 0>;
            phy-names = "pcie-phy2";
            ranges;
        };
    };
...