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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/intel,ixp4xx-pci.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Intel IXP4xx PCI controller
maintainers:
- Linus Walleij <linus.walleij@linaro.org>
description: PCI host controller found in the Intel IXP4xx SoC series.
allOf:
- $ref: /schemas/pci/pci-bus.yaml#
properties:
compatible:
items:
- enum:
- intel,ixp42x-pci
- intel,ixp43x-pci
description: The two supported variants are ixp42x and ixp43x,
though more variants may exist.
reg:
items:
- description: IXP4xx-specific registers
interrupts:
items:
- description: Main PCI interrupt
- description: PCI DMA interrupt 1
- description: PCI DMA interrupt 2
ranges:
maxItems: 2
description: Typically one memory range of 64MB and one IO
space range of 64KB.
dma-ranges:
maxItems: 1
description: The DMA range tells the PCI host which addresses
the RAM is at. It can map only 64MB so if the RAM is bigger
than 64MB the DMA access has to be restricted to these
addresses.
"#interrupt-cells": true
interrupt-map: true
interrupt-map-mask:
items:
- const: 0xf800
- const: 0
- const: 0
- const: 7
required:
- compatible
- reg
- dma-ranges
- "#interrupt-cells"
- interrupt-map
- interrupt-map-mask
unevaluatedProperties: false
examples:
- |
pci@c0000000 {
compatible = "intel,ixp43x-pci";
reg = <0xc0000000 0x1000>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
bus-range = <0x00 0xff>;
ranges =
<0x02000000 0 0x48000000 0x48000000 0 0x04000000>,
<0x01000000 0 0x00000000 0x4c000000 0 0x00010000>;
dma-ranges =
<0x02000000 0 0x00000000 0x00000000 0 0x04000000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0xf800 0 0 7>;
interrupt-map =
<0x0800 0 0 1 &gpio0 11 3>, /* INT A on slot 1 is irq 11 */
<0x0800 0 0 2 &gpio0 10 3>, /* INT B on slot 1 is irq 10 */
<0x0800 0 0 3 &gpio0 9 3>, /* INT C on slot 1 is irq 9 */
<0x0800 0 0 4 &gpio0 8 3>, /* INT D on slot 1 is irq 8 */
<0x1000 0 0 1 &gpio0 10 3>, /* INT A on slot 2 is irq 10 */
<0x1000 0 0 2 &gpio0 9 3>, /* INT B on slot 2 is irq 9 */
<0x1000 0 0 3 &gpio0 8 3>, /* INT C on slot 2 is irq 8 */
<0x1000 0 0 4 &gpio0 11 3>, /* INT D on slot 2 is irq 11 */
<0x1800 0 0 1 &gpio0 9 3>, /* INT A on slot 3 is irq 9 */
<0x1800 0 0 2 &gpio0 8 3>, /* INT B on slot 3 is irq 8 */
<0x1800 0 0 3 &gpio0 11 3>, /* INT C on slot 3 is irq 11 */
<0x1800 0 0 4 &gpio0 10 3>; /* INT D on slot 3 is irq 10 */
};
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