0001 # SPDX-License-Identifier: GPL-2.0
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/pci/snps,dw-pcie-ep.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Synopsys DesignWare PCIe endpoint interface
0008
0009 maintainers:
0010 - Jingoo Han <jingoohan1@gmail.com>
0011 - Gustavo Pimentel <gustavo.pimentel@synopsys.com>
0012
0013 description: |
0014 Synopsys DesignWare PCIe host controller endpoint
0015
0016 allOf:
0017 - $ref: /schemas/pci/pci-ep.yaml#
0018
0019 properties:
0020 compatible:
0021 anyOf:
0022 - {}
0023 - const: snps,dw-pcie-ep
0024
0025 reg:
0026 description: |
0027 It should contain Data Bus Interface (dbi) and config registers for all
0028 versions.
0029 For designware core version >= 4.80, it may contain ATU address space.
0030 minItems: 2
0031 maxItems: 4
0032
0033 reg-names:
0034 minItems: 2
0035 maxItems: 4
0036 items:
0037 enum: [dbi, dbi2, config, atu, addr_space, link, atu_dma, appl]
0038
0039 reset-gpio:
0040 description: GPIO pin number of PERST# signal
0041 maxItems: 1
0042 deprecated: true
0043
0044 reset-gpios:
0045 description: GPIO controlled connection to PERST# signal
0046 maxItems: 1
0047
0048 snps,enable-cdm-check:
0049 type: boolean
0050 description: |
0051 This is a boolean property and if present enables
0052 automatic checking of CDM (Configuration Dependent Module) registers
0053 for data corruption. CDM registers include standard PCIe configuration
0054 space registers, Port Logic registers, DMA and iATU (internal Address
0055 Translation Unit) registers.
0056
0057 num-ib-windows:
0058 $ref: /schemas/types.yaml#/definitions/uint32
0059 maximum: 256
0060 description: number of inbound address translation windows
0061 deprecated: true
0062
0063 num-ob-windows:
0064 $ref: /schemas/types.yaml#/definitions/uint32
0065 maximum: 256
0066 description: number of outbound address translation windows
0067 deprecated: true
0068
0069 required:
0070 - reg
0071 - reg-names
0072 - compatible
0073
0074 additionalProperties: true
0075
0076 examples:
0077 - |
0078 bus {
0079 #address-cells = <1>;
0080 #size-cells = <1>;
0081 pcie-ep@dfd00000 {
0082 compatible = "snps,dw-pcie-ep";
0083 reg = <0xdfc00000 0x0001000>, /* IP registers 1 */
0084 <0xdfc01000 0x0001000>, /* IP registers 2 */
0085 <0xd0000000 0x2000000>; /* Configuration space */
0086 reg-names = "dbi", "dbi2", "addr_space";
0087 };
0088 };
