intel,ixp4xx-pci.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/pci/intel,ixp4xx-pci.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Intel IXP4xx PCI controller
  8
  9maintainers:
 10  - Linus Walleij <linusw@kernel.org>
 11
 12description: PCI host controller found in the Intel IXP4xx SoC series.
 13
 14allOf:
 15  - $ref: /schemas/pci/pci-host-bridge.yaml#
 16
 17properties:
 18  compatible:
 19    items:
 20      - enum:
 21          - intel,ixp42x-pci
 22          - intel,ixp43x-pci
 23    description: The two supported variants are ixp42x and ixp43x,
 24      though more variants may exist.
 25
 26  reg:
 27    items:
 28      - description: IXP4xx-specific registers
 29
 30  interrupts:
 31    items:
 32      - description: Main PCI interrupt
 33      - description: PCI DMA interrupt 1
 34      - description: PCI DMA interrupt 2
 35
 36  ranges:
 37    maxItems: 2
 38    description: Typically one memory range of 64MB and one IO
 39      space range of 64KB.
 40
 41  dma-ranges:
 42    maxItems: 1
 43    description: The DMA range tells the PCI host which addresses
 44      the RAM is at. It can map only 64MB so if the RAM is bigger
 45      than 64MB the DMA access has to be restricted to these
 46      addresses.
 47
 48  "#interrupt-cells": true
 49
 50  interrupt-map: true
 51
 52  interrupt-map-mask:
 53    items:
 54      - const: 0xf800
 55      - const: 0
 56      - const: 0
 57      - const: 7
 58
 59required:
 60  - compatible
 61  - reg
 62  - dma-ranges
 63  - "#interrupt-cells"
 64  - interrupt-map
 65  - interrupt-map-mask
 66
 67unevaluatedProperties: false
 68
 69examples:
 70  - |
 71    pci@c0000000 {
 72      compatible = "intel,ixp43x-pci";
 73      reg = <0xc0000000 0x1000>;
 74      #address-cells = <3>;
 75      #size-cells = <2>;
 76      device_type = "pci";
 77      bus-range = <0x00 0xff>;
 78
 79      ranges =
 80        <0x02000000 0 0x48000000 0x48000000 0 0x04000000>,
 81        <0x01000000 0 0x00000000 0x4c000000 0 0x00010000>;
 82      dma-ranges =
 83        <0x02000000 0 0x00000000 0x00000000 0 0x04000000>;
 84
 85      #interrupt-cells = <1>;
 86      interrupt-map-mask = <0xf800 0 0 7>;
 87      interrupt-map =
 88        <0x0800 0 0 1 &gpio0 11 3>, /* INT A on slot 1 is irq 11 */
 89        <0x0800 0 0 2 &gpio0 10 3>, /* INT B on slot 1 is irq 10 */
 90        <0x0800 0 0 3 &gpio0 9  3>, /* INT C on slot 1 is irq 9 */
 91        <0x0800 0 0 4 &gpio0 8  3>, /* INT D on slot 1 is irq 8 */
 92        <0x1000 0 0 1 &gpio0 10 3>, /* INT A on slot 2 is irq 10 */
 93        <0x1000 0 0 2 &gpio0 9  3>, /* INT B on slot 2 is irq 9 */
 94        <0x1000 0 0 3 &gpio0 8  3>, /* INT C on slot 2 is irq 8 */
 95        <0x1000 0 0 4 &gpio0 11 3>, /* INT D on slot 2 is irq 11 */
 96        <0x1800 0 0 1 &gpio0 9  3>, /* INT A on slot 3 is irq 9 */
 97        <0x1800 0 0 2 &gpio0 8  3>, /* INT B on slot 3 is irq 8 */
 98        <0x1800 0 0 3 &gpio0 11 3>, /* INT C on slot 3 is irq 11 */
 99        <0x1800 0 0 4 &gpio0 10 3>; /* INT D on slot 3 is irq 10 */
100    };