xref: /linux/Documentation/devicetree/bindings/pci/amlogic,axg-pcie.yaml (revision 6e7fd890f1d6ac83805409e9c346240de2705584) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pci/amlogic,axg-pcie.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Amlogic Meson AXG DWC PCIe SoC controller
8
9maintainers:
10  - Neil Armstrong <neil.armstrong@linaro.org>
11
12description:
13  Amlogic Meson PCIe host controller is based on the Synopsys DesignWare PCI core.
14
15allOf:
16  - $ref: /schemas/pci/pci-host-bridge.yaml#
17  - $ref: /schemas/pci/snps,dw-pcie-common.yaml#
18
19# We need a select here so we don't match all nodes with 'snps,dw-pcie'
20select:
21  properties:
22    compatible:
23      enum:
24        - amlogic,axg-pcie
25        - amlogic,g12a-pcie
26  required:
27    - compatible
28
29properties:
30  compatible:
31    items:
32      - enum:
33          - amlogic,axg-pcie
34          - amlogic,g12a-pcie
35      - const: snps,dw-pcie
36
37  reg:
38    items:
39      - description: External local bus interface registers
40      - description: Meson designed configuration registers
41      - description: PCIe configuration space
42
43  reg-names:
44    items:
45      - const: elbi
46      - const: cfg
47      - const: config
48
49  interrupts:
50    maxItems: 1
51
52  clocks:
53    items:
54      - description: PCIe GEN 100M PLL clock
55      - description: PCIe RC clock gate
56      - description: PCIe PHY clock
57
58  clock-names:
59    items:
60      - const: pclk
61      - const: port
62      - const: general
63
64  phys:
65    maxItems: 1
66
67  phy-names:
68    const: pcie
69
70  resets:
71    items:
72      - description: Port Reset
73      - description: Shared APB reset
74
75  reset-names:
76    items:
77      - const: port
78      - const: apb
79
80  num-lanes:
81    const: 1
82
83  power-domains:
84    maxItems: 1
85
86required:
87  - compatible
88  - reg
89  - reg-names
90  - interrupts
91  - clock
92  - clock-names
93  - "#address-cells"
94  - "#size-cells"
95  - "#interrupt-cells"
96  - interrupt-map
97  - interrupt-map-mask
98  - ranges
99  - bus-range
100  - device_type
101  - num-lanes
102  - phys
103  - phy-names
104  - resets
105  - reset-names
106
107unevaluatedProperties: false
108
109examples:
110  - |
111    #include <dt-bindings/interrupt-controller/irq.h>
112    #include <dt-bindings/interrupt-controller/arm-gic.h>
113    pcie: pcie@f9800000 {
114        compatible = "amlogic,axg-pcie", "snps,dw-pcie";
115        reg = <0xf9800000 0x400000>, <0xff646000 0x2000>, <0xf9f00000 0x100000>;
116        reg-names = "elbi", "cfg", "config";
117        interrupts = <GIC_SPI 177 IRQ_TYPE_EDGE_RISING>;
118        clocks = <&pclk>, <&clk_port>, <&clk_phy>;
119        clock-names = "pclk", "port", "general";
120        resets = <&reset_pcie_port>, <&reset_pcie_apb>;
121        reset-names = "port", "apb";
122        phys = <&pcie_phy>;
123        phy-names = "pcie";
124        #interrupt-cells = <1>;
125        interrupt-map-mask = <0 0 0 0>;
126        interrupt-map = <0 0 0 0 &gic GIC_SPI 179 IRQ_TYPE_EDGE_RISING>;
127        bus-range = <0x0 0xff>;
128        #address-cells = <3>;
129        #size-cells = <2>;
130        device_type = "pci";
131        num-lanes = <1>;
132        ranges = <0x82000000 0 0 0xf9c00000 0 0x00300000>;
133    };
134...
135