xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/pci/versatile.yaml

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

title: ARM Versatile Platform Baseboard PCI interface

maintainers:
  - Rob Herring <robh@kernel.org>

description: |+
  PCI host controller found on the ARM Versatile PB board's FPGA.

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

properties:
  compatible:
    const: arm,versatile-pci

  reg:
    items:
      - description: Versatile-specific registers
      - description: Self Config space
      - description: Config space

  ranges:
    maxItems: 3

  "#interrupt-cells": true

  interrupt-map:
    maxItems: 16

  interrupt-map-mask:
    items:
      - const: 0x1800
      - const: 0
      - const: 0
      - const: 7

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

unevaluatedProperties: false

examples:
  - |
    pci@10001000 {
      compatible = "arm,versatile-pci";
      device_type = "pci";
      reg = <0x10001000 0x1000>,
            <0x41000000 0x10000>,
            <0x42000000 0x100000>;
      bus-range = <0 0xff>;
      #address-cells = <3>;
      #size-cells = <2>;
      #interrupt-cells = <1>;

      ranges =
          <0x01000000 0 0x00000000 0x43000000 0 0x00010000>,  /* downstream I/O */
          <0x02000000 0 0x50000000 0x50000000 0 0x10000000>,  /* non-prefetchable memory */
          <0x42000000 0 0x60000000 0x60000000 0 0x10000000>;  /* prefetchable memory */

      interrupt-map-mask = <0x1800 0 0 7>;
      interrupt-map = <0x1800 0 0 1 &sic 28>,
          <0x1800 0 0 2 &sic 29>,
          <0x1800 0 0 3 &sic 30>,
          <0x1800 0 0 4 &sic 27>,

          <0x1000 0 0 1 &sic 27>,
          <0x1000 0 0 2 &sic 28>,
          <0x1000 0 0 3 &sic 29>,
          <0x1000 0 0 4 &sic 30>,

          <0x0800 0 0 1 &sic 30>,
          <0x0800 0 0 2 &sic 27>,
          <0x0800 0 0 3 &sic 28>,
          <0x0800 0 0 4 &sic 29>,

          <0x0000 0 0 1 &sic 29>,
          <0x0000 0 0 2 &sic 30>,
          <0x0000 0 0 3 &sic 27>,
          <0x0000 0 0 4 &sic 28>;
    };


...