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# SPDX-License-Identifier: (GPL-
2.
0-only OR BSD-
2-Clause)
%YAML
1.
2
---
$id:
http://devicetree.org/schemas/pci/apple,pcie.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Apple PCIe host controller
maintainers:
- Mark Kettenis <kettenis@openbsd.org>
description: |
The Apple PCIe host controller is a PCIe host controller with
multiple root ports present in Apple ARM SoC platforms, including
various iPhone and iPad devices and the "Apple Silicon" Macs.
The controller incorporates Synopsys DesigWare PCIe logic to
implements its root ports. But the ATU found on most DesignWare
PCIe host bridges is absent.
On systems derived from T602x, the PHY registers are in a region
separate from the port registers. In that case, there is one PHY
register range per port register range.
All root ports share a single ECAM space, but separate GPIOs are
used to take the PCI devices on those ports out of reset. Therefore
the standard "reset-gpios" and "max-link-speed" properties appear on
the child nodes that represent the PCI bridges that correspond to
the individual root ports.
MSIs are handled by the PCIe controller and translated into regular
interrupts. A range of
32 MSIs is provided. These
32 MSIs can be
distributed over the root ports as the OS sees fit by programming
the PCIe controller's port registers.
properties:
compatible:
oneOf:
- items:
- enum:
- apple,t8103-pcie
- apple,t8112-pcie
- apple,t6000-pcie
- const: apple,pcie
- const: apple,t6020-pcie
reg:
minItems:
3
maxItems:
10
reg-names:
minItems:
3
items:
- const: config
- const: rc
- const: port0
- const: port1
- const: port2
- const: port3
- const: phy0
- const: phy1
- const: phy2
- const: phy3
ranges:
minItems:
2
maxItems:
2
interrupts:
description:
Interrupt specifiers, one for each root port.
minItems:
1
maxItems:
4
msi-parent: true
msi-ranges:
maxItems:
1
iommu-map: true
iommu-map-mask: true
power-domains:
maxItems:
1
required:
- compatible
- reg
- reg-names
- bus-range
- interrupts
- msi-controller
- msi-parent
- msi-ranges
unevaluatedProperties: false
allOf:
- $ref: /schemas/pci/pci-host-bridge.yaml#
- $ref: /schemas/interrupt-controller/msi-controller.yaml#
- if:
properties:
compatible:
contains:
const: apple,t8103-pcie
then:
properties:
reg:
maxItems:
5
interrupts:
maxItems:
3
- if:
properties:
compatible:
contains:
const: apple,t6020-pcie
then:
properties:
reg-names:
minItems:
10
examples:
- |
#include <dt-bindings/interrupt-controller/apple-aic.h>
soc {
#address-cells = <
2>;
#size-cells = <
2>;
pcie0: pcie@
690000000 {
compatible = "apple,t8103-pcie", "apple,pcie";
device_type = "pci";
reg = <
0x6
0x90000000
0x0
0x1000000>,
<
0x6
0x80000000
0x0
0x100000>,
<
0x6
0x81000000
0x0
0x4000>,
<
0x6
0x82000000
0x0
0x4000>,
<
0x6
0x83000000
0x0
0x4000>;
reg-names = "config", "rc", "port0", "port1", "port2";
interrupt-parent = <&aic>;
interrupts = <AIC_IRQ
695 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ
698 IRQ_TYPE_LEVEL_HIGH>,
<AIC_IRQ
701 IRQ_TYPE_LEVEL_HIGH>;
msi-controller;
msi-parent = <&pcie0>;
msi-ranges = <&aic AIC_IRQ
704 IRQ_TYPE_EDGE_RISING
32>;
iommu-map = <
0x100 &dart0
1 1>,
<
0x200 &dart1
1 1>,
<
0x300 &dart2
1 1>;
iommu-map-mask = <
0xff00>;
bus-range = <
0 3>;
#address-cells = <
3>;
#size-cells = <
2>;
ranges = <
0x43000000
0x6
0xa0000000
0x6
0xa0000000
0x0
0x20000000>,
<
0x02000000
0x0
0xc0000000
0x6
0xc0000000
0x0
0x40000000>;
power-domains = <&ps_apcie_gp>;
pinctrl-
0 = <&pcie_pins>;
pinctrl-names = "default";
pci@
0,
0 {
device_type = "pci";
reg = <
0x0
0x0
0x0
0x0
0x0>;
reset-gpios = <&pinctrl_ap
152 0>;
#address-cells = <
3>;
#size-cells = <
2>;
ranges;
};
pci@
1,
0 {
device_type = "pci";
reg = <
0x800
0x0
0x0
0x0
0x0>;
reset-gpios = <&pinctrl_ap
153 0>;
#address-cells = <
3>;
#size-cells = <
2>;
ranges;
};
pci@
2,
0 {
device_type = "pci";
reg = <
0x1000
0x0
0x0
0x0
0x0>;
reset-gpios = <&pinctrl_ap
33 0>;
#address-cells = <
3>;
#size-cells = <
2>;
ranges;
};
};
};