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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pci/brcm,iproc-pcie.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Broadcom iProc PCIe controller with the platform bus interface
maintainers:
- Ray Jui <ray.jui@broadcom.com>
- Scott Branden <scott.branden@broadcom.com>
allOf:
- $ref: /schemas/pci/pci-bus.yaml#
properties:
compatible:
items:
- enum:
# for the first generation of PAXB based controller, used in SoCs
# including NSP, Cygnus, NS2, and Pegasus
- brcm,iproc-pcie
# for the second generation of PAXB-based controllers, used in
# Stingray
- brcm,iproc-pcie-paxb-v2
# For the first generation of PAXC based controller, used in NS2
- brcm,iproc-pcie-paxc
# For the second generation of PAXC based controller, used in Stingray
- brcm,iproc-pcie-paxc-v2
reg:
maxItems: 1
description: >
Base address and length of the PCIe controller I/O register space
ranges:
minItems: 1
maxItems: 2
description: >
Ranges for the PCI memory and I/O regions
phys:
maxItems: 1
phy-names:
items:
- const: pcie-phy
dma-coherent: true
brcm,pcie-ob:
type: boolean
description: >
Some iProc SoCs do not have the outbound address mapping done by the
ASIC after power on reset. In this case, SW needs to configure it
brcm,pcie-ob-axi-offset:
$ref: /schemas/types.yaml#/definitions/uint32
description: >
The offset from the AXI address to the internal address used by the
iProc PCIe core (not the PCIe address)
msi:
type: object
$ref: /schemas/interrupt-controller/msi-controller.yaml#
unevaluatedProperties: false
properties:
compatible:
items:
- const: brcm,iproc-msi
interrupts:
maxItems: 4
brcm,pcie-msi-inten:
type: boolean
description:
Needs to be present for some older iProc platforms that require the
interrupt enable registers to be set explicitly to enable MSI
msi-parent: true
dependencies:
brcm,pcie-ob-axi-offset: ["brcm,pcie-ob"]
brcm,pcie-msi-inten: [msi-controller]
required:
- compatible
- reg
- ranges
if:
properties:
compatible:
contains:
enum:
- brcm,iproc-pcie
then:
required:
- interrupt-map
- interrupt-map-mask
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
gic: interrupt-controller {
interrupt-controller;
#interrupt-cells = <3>;
};
pcie@18012000 {
compatible = "brcm,iproc-pcie";
reg = <0x18012000 0x1000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &gic GIC_SPI 100 IRQ_TYPE_NONE>;
linux,pci-domain = <0>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x81000000 0 0 0x28000000 0 0x00010000>,
<0x82000000 0 0x20000000 0x20000000 0 0x04000000>;
phys = <&phy 0 5>;
phy-names = "pcie-phy";
brcm,pcie-ob;
brcm,pcie-ob-axi-offset = <0x00000000>;
msi-parent = <&msi0>;
/* iProc event queue based MSI */
msi0: msi {
compatible = "brcm,iproc-msi";
msi-controller;
interrupt-parent = <&gic>;
interrupts = <GIC_SPI 96 IRQ_TYPE_NONE>,
<GIC_SPI 97 IRQ_TYPE_NONE>,
<GIC_SPI 98 IRQ_TYPE_NONE>,
<GIC_SPI 99 IRQ_TYPE_NONE>;
};
};
- |
pcie@18013000 {
compatible = "brcm,iproc-pcie";
reg = <0x18013000 0x1000>;
#interrupt-cells = <1>;
interrupt-map-mask = <0 0 0 0>;
interrupt-map = <0 0 0 0 &gic GIC_SPI 106 IRQ_TYPE_NONE>;
linux,pci-domain = <1>;
bus-range = <0x00 0xff>;
#address-cells = <3>;
#size-cells = <2>;
device_type = "pci";
ranges = <0x81000000 0 0 0x48000000 0 0x00010000>,
<0x82000000 0 0x40000000 0x40000000 0 0x04000000>;
phys = <&phy 1 6>;
phy-names = "pcie-phy";
};
|
