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Diffstat (limited to 'Documentation/devicetree')
-rw-r--r-- | Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml new file mode 100644 index 000000000000..b5935b1b153f --- /dev/null +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/snps,dw-pcie-ep.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Synopsys DesignWare PCIe endpoint interface + +maintainers: + - Jingoo Han <jingoohan1@gmail.com> + - Gustavo Pimentel <gustavo.pimentel@synopsys.com> + +description: | + Synopsys DesignWare PCIe host controller endpoint + +allOf: + - $ref: /schemas/pci/pci-ep.yaml# + +properties: + compatible: + anyOf: + - {} + - const: snps,dw-pcie-ep + + reg: + description: | + It should contain Data Bus Interface (dbi) and config registers for all + versions. + For designware core version >= 4.80, it may contain ATU address space. + minItems: 2 + maxItems: 4 + + reg-names: + minItems: 2 + maxItems: 4 + items: + enum: [dbi, dbi2, config, atu, addr_space, link, atu_dma, appl] + + reset-gpio: + description: GPIO pin number of PERST# signal + maxItems: 1 + deprecated: true + + reset-gpios: + description: GPIO controlled connection to PERST# signal + maxItems: 1 + + snps,enable-cdm-check: + type: boolean + description: | + This is a boolean property and if present enables + automatic checking of CDM (Configuration Dependent Module) registers + for data corruption. CDM registers include standard PCIe configuration + space registers, Port Logic registers, DMA and iATU (internal Address + Translation Unit) registers. + + num-ib-windows: + description: number of inbound address translation windows + maxItems: 1 + deprecated: true + + num-ob-windows: + description: number of outbound address translation windows + maxItems: 1 + deprecated: true + + max-functions: + $ref: /schemas/types.yaml#/definitions/uint32 + description: maximum number of functions that can be configured + +required: + - reg + - reg-names + - compatible + +unevaluatedProperties: false + +examples: + - | + bus { + #address-cells = <1>; + #size-cells = <1>; + pcie-ep@dfd00000 { + compatible = "snps,dw-pcie-ep"; + reg = <0xdfc00000 0x0001000>, /* IP registers 1 */ + <0xdfc01000 0x0001000>, /* IP registers 2 */ + <0xd0000000 0x2000000>; /* Configuration space */ + reg-names = "dbi", "dbi2", "addr_space"; + }; + }; |