xref: /linux/Documentation/devicetree/bindings/pci/fsl,layerscape-pcie-ep.yaml (revision 90d32e92011eaae8e70a9169b4e7acf4ca8f9d3a) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/pci/fsl,layerscape-pcie-ep.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale Layerscape PCIe Endpoint(EP) controller
8
9maintainers:
10  - Frank Li <Frank.Li@nxp.com>
11
12description:
13  This PCIe EP controller is based on the Synopsys DesignWare PCIe IP.
14
15  This controller derives its clocks from the Reset Configuration Word (RCW)
16  which is used to describe the PLL settings at the time of chip-reset.
17
18  Also as per the available Reference Manuals, there is no specific 'version'
19  register available in the Freescale PCIe controller register set,
20  which can allow determining the underlying DesignWare PCIe controller version
21  information.
22
23properties:
24  compatible:
25    enum:
26      - fsl,ls2088a-pcie-ep
27      - fsl,ls1088a-pcie-ep
28      - fsl,ls1046a-pcie-ep
29      - fsl,ls1028a-pcie-ep
30      - fsl,lx2160ar2-pcie-ep
31
32  reg:
33    maxItems: 2
34
35  reg-names:
36    items:
37      - const: regs
38      - const: addr_space
39
40  fsl,pcie-scfg:
41    $ref: /schemas/types.yaml#/definitions/phandle
42    description: A phandle to the SCFG device node. The second entry is the
43      physical PCIe controller index starting from '0'. This is used to get
44      SCFG PEXN registers.
45
46  big-endian:
47    $ref: /schemas/types.yaml#/definitions/flag
48    description: If the PEX_LUT and PF register block is in big-endian, specify
49      this property.
50
51  dma-coherent: true
52
53  interrupts:
54    minItems: 1
55    maxItems: 2
56
57  interrupt-names:
58    minItems: 1
59    maxItems: 2
60
61required:
62  - compatible
63  - reg
64  - reg-names
65
66allOf:
67  - if:
68      properties:
69        compatible:
70          enum:
71            - fsl,ls1028a-pcie-ep
72            - fsl,ls1046a-pcie-ep
73            - fsl,ls1088a-pcie-ep
74    then:
75      properties:
76        interrupt-names:
77          items:
78            - const: pme
79
80unevaluatedProperties: false
81
82examples:
83  - |
84    #include <dt-bindings/interrupt-controller/arm-gic.h>
85
86    soc {
87      #address-cells = <2>;
88      #size-cells = <2>;
89
90      pcie_ep1: pcie-ep@3400000 {
91        compatible = "fsl,ls1028a-pcie-ep";
92        reg = <0x00 0x03400000 0x0 0x00100000
93              0x80 0x00000000 0x8 0x00000000>;
94        reg-names = "regs", "addr_space";
95        interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; /* PME interrupt */
96        interrupt-names = "pme";
97        num-ib-windows = <6>;
98        num-ob-windows = <8>;
99        status = "disabled";
100      };
101    };
102...
103