xref: /linux/Documentation/devicetree/bindings/pci/intel,ixp4xx-pci.yaml (revision ae22a94997b8a03dcb3c922857c203246711f9d4) 
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 <linus.walleij@linaro.org>
11
12description: PCI host controller found in the Intel IXP4xx SoC series.
13
14allOf:
15  - $ref: /schemas/pci/pci-bus.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    };
101