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# SPDX-License-Identifier: (GPL-
2.
0-only OR BSD-
2-Clause)
%YAML
1.
2
---
$id:
http://devicetree.org/schemas/pci/qcom,pcie.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm PCI express root complex
maintainers:
- Bjorn Andersson <bjorn.andersson@linaro.org>
- Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
description: |
Qualcomm PCIe root complex controller is based on the Synopsys DesignWare
PCIe IP.
properties:
compatible:
oneOf:
- enum:
- qcom,pcie-apq8064
- qcom,pcie-apq8084
- qcom,pcie-ipq4019
- qcom,pcie-ipq5018
- qcom,pcie-ipq6018
- qcom,pcie-ipq8064
- qcom,pcie-ipq8064-v2
- qcom,pcie-ipq8074
- qcom,pcie-ipq8074-gen3
- qcom,pcie-ipq9574
- qcom,pcie-msm8996
- qcom,pcie-qcs404
- qcom,pcie-sdm845
- qcom,pcie-sdx55
- items:
- enum:
- qcom,pcie-ipq5332
- qcom,pcie-ipq5424
- const: qcom,pcie-ipq9574
- items:
- const: qcom,pcie-msm8998
- const: qcom,pcie-msm8996
reg:
minItems:
4
maxItems:
6
reg-names:
minItems:
4
maxItems:
6
interrupts:
minItems:
1
maxItems:
9
interrupt-names:
minItems:
1
maxItems:
9
iommu-map:
minItems:
1
maxItems:
16
# Common definitions for clocks, clock-names and reset.
# Platform constraints are described later.
clocks:
minItems:
3
maxItems:
13
clock-names:
minItems:
3
maxItems:
13
dma-coherent: true
interconnects:
maxItems:
2
interconnect-names:
items:
- const: pcie-mem
- const: cpu-pcie
resets:
minItems:
1
maxItems:
12
reset-names:
minItems:
1
maxItems:
12
vdda-supply:
description: A phandle to the core analog power supply
vdda_phy-supply:
description: A phandle to the core analog power supply for PHY
vdda_refclk-supply:
description: A phandle to the core analog power supply for IC which generates reference clock
vddpe-
3v3-supply:
description: A phandle to the PCIe endpoint power supply
phys:
maxItems:
1
phy-names:
items:
- const: pciephy
power-domains:
maxItems:
1
perst-gpios:
description: GPIO controlled connection to PERST# signal
maxItems:
1
required-opps:
maxItems:
1
wake-gpios:
description: GPIO controlled connection to WAKE# signal
maxItems:
1
required:
- compatible
- reg
- reg-names
- interrupt-map-mask
- interrupt-map
- clocks
- clock-names
anyOf:
- required:
- interrupts
- interrupt-names
- "#interrupt-cells"
- required:
- msi-map
allOf:
- $ref: /schemas/pci/pci-host-bridge.yaml#
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-apq8064
- qcom,pcie-ipq4019
- qcom,pcie-ipq8064
- qcom,pcie-ipq8064v2
- qcom,pcie-ipq8074
- qcom,pcie-qcs404
then:
properties:
reg:
minItems:
4
maxItems:
4
reg-names:
items:
- const: dbi # DesignWare PCIe registers
- const: elbi # External local bus interface registers
- const: parf # Qualcomm specific registers
- const: config # PCIe configuration space
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq5018
- qcom,pcie-ipq6018
- qcom,pcie-ipq8074-gen3
- qcom,pcie-ipq9574
then:
properties:
reg:
minItems:
5
maxItems:
6
reg-names:
minItems:
5
items:
- const: dbi # DesignWare PCIe registers
- const: elbi # External local bus interface registers
- const: atu # ATU address space
- const: parf # Qualcomm specific registers
- const: config # PCIe configuration space
- const: mhi # MHI registers
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-apq8084
- qcom,pcie-msm8996
- qcom,pcie-sdm845
then:
properties:
reg:
minItems:
4
maxItems:
5
reg-names:
minItems:
4
items:
- const: parf # Qualcomm specific registers
- const: dbi # DesignWare PCIe registers
- const: elbi # External local bus interface registers
- const: config # PCIe configuration space
- const: mhi # MHI registers
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-sdx55
then:
properties:
reg:
minItems:
5
maxItems:
6
reg-names:
minItems:
5
items:
- const: parf # Qualcomm specific registers
- const: dbi # DesignWare PCIe registers
- const: elbi # External local bus interface registers
- const: atu # ATU address space
- const: config # PCIe configuration space
- const: mhi # MHI registers
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-apq8064
- qcom,pcie-ipq8064
- qcom,pcie-ipq8064v2
then:
properties:
clocks:
minItems:
3
maxItems:
5
clock-names:
minItems:
3
items:
- const: core # Clocks the pcie hw block
- const: iface # Configuration AHB clock
- const: phy # Clocks the pcie PHY block
- const: aux # Clocks the pcie AUX block, not on apq8064
- const: ref # Clocks the pcie ref block, not on apq8064
resets:
minItems:
5
maxItems:
6
reset-names:
minItems:
5
items:
- const: axi # AXI reset
- const: ahb # AHB reset
- const: por # POR reset
- const: pci # PCI reset
- const: phy # PHY reset
- const: ext # EXT reset, not on apq8064
required:
- vdda-supply
- vdda_phy-supply
- vdda_refclk-supply
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-apq8084
then:
properties:
clocks:
minItems:
4
maxItems:
4
clock-names:
items:
- const: iface # Configuration AHB clock
- const: master_bus # Master AXI clock
- const: slave_bus # Slave AXI clock
- const: aux # Auxiliary (AUX) clock
resets:
maxItems:
1
reset-names:
items:
- const: core # Core reset
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq4019
then:
properties:
clocks:
minItems:
3
maxItems:
3
clock-names:
items:
- const: aux # Auxiliary (AUX) clock
- const: master_bus # Master AXI clock
- const: slave_bus # Slave AXI clock
resets:
minItems:
12
maxItems:
12
reset-names:
items:
- const: axi_m # AXI master reset
- const: axi_s # AXI slave reset
- const: pipe # PIPE reset
- const: axi_m_vmid # VMID reset
- const: axi_s_xpu # XPU reset
- const: parf # PARF reset
- const: phy # PHY reset
- const: axi_m_sticky # AXI sticky reset
- const: pipe_sticky # PIPE sticky reset
- const: pwr # PWR reset
- const: ahb # AHB reset
- const: phy_ahb # PHY AHB reset
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq5018
then:
properties:
clocks:
minItems:
6
maxItems:
6
clock-names:
items:
- const: iface # PCIe to SysNOC BIU clock
- const: axi_m # AXI Master clock
- const: axi_s # AXI Slave clock
- const: ahb # AHB clock
- const: aux # Auxiliary clock
- const: axi_bridge # AXI bridge clock
resets:
minItems:
8
maxItems:
8
reset-names:
items:
- const: pipe # PIPE reset
- const: sleep # Sleep reset
- const: sticky # Core sticky reset
- const: axi_m # AXI master reset
- const: axi_s # AXI slave reset
- const: ahb # AHB reset
- const: axi_m_sticky # AXI master sticky reset
- const: axi_s_sticky # AXI slave sticky reset
interrupts:
minItems:
9
maxItems:
9
interrupt-names:
items:
- const: msi0
- const: msi1
- const: msi2
- const: msi3
- const: msi4
- const: msi5
- const: msi6
- const: msi7
- const: global
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-msm8996
then:
properties:
clocks:
minItems:
5
maxItems:
5
clock-names:
items:
- const: pipe # Pipe Clock driving internal logic
- const: aux # Auxiliary (AUX) clock
- const: cfg # Configuration clock
- const: bus_master # Master AXI clock
- const: bus_slave # Slave AXI clock
resets: false
reset-names: false
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq8074
then:
properties:
clocks:
minItems:
5
maxItems:
5
clock-names:
items:
- const: iface # PCIe to SysNOC BIU clock
- const: axi_m # AXI Master clock
- const: axi_s # AXI Slave clock
- const: ahb # AHB clock
- const: aux # Auxiliary clock
resets:
minItems:
7
maxItems:
7
reset-names:
items:
- const: pipe # PIPE reset
- const: sleep # Sleep reset
- const: sticky # Core Sticky reset
- const: axi_m # AXI Master reset
- const: axi_s # AXI Slave reset
- const: ahb # AHB Reset
- const: axi_m_sticky # AXI Master Sticky reset
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq6018
- qcom,pcie-ipq8074-gen3
then:
properties:
clocks:
minItems:
5
maxItems:
5
clock-names:
items:
- const: iface # PCIe to SysNOC BIU clock
- const: axi_m # AXI Master clock
- const: axi_s # AXI Slave clock
- const: axi_bridge # AXI bridge clock
- const: rchng
resets:
minItems:
8
maxItems:
8
reset-names:
items:
- const: pipe # PIPE reset
- const: sleep # Sleep reset
- const: sticky # Core Sticky reset
- const: axi_m # AXI Master reset
- const: axi_s # AXI Slave reset
- const: ahb # AHB Reset
- const: axi_m_sticky # AXI Master Sticky reset
- const: axi_s_sticky # AXI Slave Sticky reset
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq9574
then:
properties:
clocks:
minItems:
6
maxItems:
6
clock-names:
items:
- const: axi_m # AXI Master clock
- const: axi_s # AXI Slave clock
- const: axi_bridge
- const: rchng
- const: ahb
- const: aux
resets:
minItems:
8
maxItems:
8
reset-names:
items:
- const: pipe # PIPE reset
- const: sticky # Core Sticky reset
- const: axi_s_sticky # AXI Slave Sticky reset
- const: axi_s # AXI Slave reset
- const: axi_m_sticky # AXI Master Sticky reset
- const: axi_m # AXI Master reset
- const: aux # AUX Reset
- const: ahb # AHB Reset
interrupts:
minItems:
8
interrupt-names:
minItems:
8
items:
- const: msi0
- const: msi1
- const: msi2
- const: msi3
- const: msi4
- const: msi5
- const: msi6
- const: msi7
- const: global
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-qcs404
then:
properties:
clocks:
minItems:
4
maxItems:
4
clock-names:
items:
- const: iface # AHB clock
- const: aux # Auxiliary clock
- const: master_bus # AXI Master clock
- const: slave_bus # AXI Slave clock
resets:
minItems:
6
maxItems:
6
reset-names:
items:
- const: axi_m # AXI Master reset
- const: axi_s # AXI Slave reset
- const: axi_m_sticky # AXI Master Sticky reset
- const: pipe_sticky # PIPE sticky reset
- const: pwr # PWR reset
- const: ahb # AHB reset
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-sdm845
then:
oneOf:
# Unfortunately the "optional" ref clock is used in the middle of the list
- properties:
clocks:
minItems:
8
maxItems:
8
clock-names:
items:
- const: pipe # PIPE clock
- const: aux # Auxiliary clock
- const: cfg # Configuration clock
- const: bus_master # Master AXI clock
- const: bus_slave # Slave AXI clock
- const: slave_q2a # Slave Q2A clock
- const: ref # REFERENCE clock
- const: tbu # PCIe TBU clock
- properties:
clocks:
minItems:
7
maxItems:
7
clock-names:
items:
- const: pipe # PIPE clock
- const: aux # Auxiliary clock
- const: cfg # Configuration clock
- const: bus_master # Master AXI clock
- const: bus_slave # Slave AXI clock
- const: slave_q2a # Slave Q2A clock
- const: tbu # PCIe TBU clock
properties:
resets:
maxItems:
1
reset-names:
items:
- const: pci # PCIe core reset
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-sdx55
then:
properties:
clocks:
minItems:
7
maxItems:
7
clock-names:
items:
- const: pipe # PIPE clock
- const: aux # Auxiliary clock
- const: cfg # Configuration clock
- const: bus_master # Master AXI clock
- const: bus_slave # Slave AXI clock
- const: slave_q2a # Slave Q2A clock
- const: sleep # PCIe Sleep clock
resets:
maxItems:
1
reset-names:
items:
- const: pci # PCIe core reset
- if:
not:
properties:
compatible:
contains:
enum:
- qcom,pcie-apq8064
- qcom,pcie-ipq4019
- qcom,pcie-ipq5018
- qcom,pcie-ipq8064
- qcom,pcie-ipq8064v2
- qcom,pcie-ipq8074
- qcom,pcie-ipq8074-gen3
- qcom,pcie-ipq9574
- qcom,pcie-qcs404
then:
required:
- power-domains
- if:
not:
properties:
compatible:
contains:
enum:
- qcom,pcie-msm8996
then:
required:
- resets
- reset-names
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-ipq6018
- qcom,pcie-ipq8074
- qcom,pcie-ipq8074-gen3
- qcom,pcie-msm8996
- qcom,pcie-msm8998
- qcom,pcie-sdm845
then:
oneOf:
- properties:
interrupts:
maxItems:
1
interrupt-names:
items:
- const: msi
- properties:
interrupts:
minItems:
8
maxItems:
9
interrupt-names:
minItems:
8
items:
- const: msi0
- const: msi1
- const: msi2
- const: msi3
- const: msi4
- const: msi5
- const: msi6
- const: msi7
- const: global
- if:
properties:
compatible:
contains:
enum:
- qcom,pcie-apq8064
- qcom,pcie-apq8084
- qcom,pcie-ipq4019
- qcom,pcie-ipq8064
- qcom,pcie-ipq8064-v2
- qcom,pcie-qcs404
then:
properties:
interrupts:
maxItems:
1
interrupt-names:
items:
- const: msi
unevaluatedProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
pcie@
1b500000 {
compatible = "qcom,pcie-ipq8064";
reg = <
0x1b500000
0x1000>,
<
0x1b502000
0x80>,
<
0x1b600000
0x100>,
<
0x0ff00000
0x100000>;
reg-names = "dbi", "elbi", "parf", "config";
device_type = "pci";
linux,pci-domain = <
0>;
bus-range = <
0x00
0xff>;
num-lanes = <
1>;
#address-cells = <
3>;
#size-cells = <
2>;
ranges = <
0x81000000
0 0 0x0fe00000
0 0x00100000>,
<
0x82000000
0 0 0x08000000
0 0x07e00000>;
interrupts = <GIC_SPI
238 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "msi";
#interrupt-cells = <
1>;
interrupt-map-mask = <
0 0 0 0x7>;
interrupt-map = <
0 0 0 1 &intc
0 36 IRQ_TYPE_LEVEL_HIGH>,
<
0 0 0 2 &intc
0 37 IRQ_TYPE_LEVEL_HIGH>,
<
0 0 0 3 &intc
0 38 IRQ_TYPE_LEVEL_HIGH>,
<
0 0 0 4 &intc
0 39 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&gcc
41>,
<&gcc
43>,
<&gcc
44>,
<&gcc
42>,
<&gcc
248>;
clock-names = "core", "iface", "phy", "aux", "ref";
resets = <&gcc
27>,
<&gcc
26>,
<&gcc
25>,
<&gcc
24>,
<&gcc
23>,
<&gcc
22>;
reset-names = "axi", "ahb", "por", "pci", "phy", "ext";
pinctrl-
0 = <&pcie_pins_default>;
pinctrl-names = "default";
vdda-supply = <&pm8921_s3>;
vdda_phy-supply = <&pm8921_lvs6>;
vdda_refclk-supply = <&ext_3p3v>;
};
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/gpio/gpio.h>
pcie@fc520000 {
compatible = "qcom,pcie-apq8084";
reg = <
0xfc520000
0x2000>,
<
0xff000000
0x1000>,
<
0xff001000
0x1000>,
<
0xff002000
0x2000>;
reg-names = "parf", "dbi", "elbi", "config";
device_type = "pci";
linux,pci-domain = <
0>;
bus-range = <
0x00
0xff>;
num-lanes = <
1>;
#address-cells = <
3>;
#size-cells = <
2>;
ranges = <
0x81000000
0 0 0xff200000
0 0x00100000>,
<
0x82000000
0 0x00300000
0xff300000
0 0x00d00000>;
interrupts = <GIC_SPI
243 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "msi";
#interrupt-cells = <
1>;
interrupt-map-mask = <
0 0 0 0x7>;
interrupt-map = <
0 0 0 1 &intc
0 244 IRQ_TYPE_LEVEL_HIGH>,
<
0 0 0 2 &intc
0 245 IRQ_TYPE_LEVEL_HIGH>,
<
0 0 0 3 &intc
0 247 IRQ_TYPE_LEVEL_HIGH>,
<
0 0 0 4 &intc
0 248 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&gcc
324>,
<&gcc
325>,
<&gcc
327>,
<&gcc
323>;
clock-names = "iface", "master_bus", "slave_bus", "aux";
resets = <&gcc
81>;
reset-names = "core";
power-domains = <&gcc
1>;
vdda-supply = <&pma8084_l3>;
phys = <&pciephy0>;
phy-names = "pciephy";
perst-gpios = <&tlmm
70 GPIO_ACTIVE_LOW>;
pinctrl-
0 = <&pcie0_pins_default>;
pinctrl-names = "default";
};
...