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102 lines
2.5 KiB
102 lines
2.5 KiB
# SPDX-License-Identifier: GPL-2.0 |
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%YAML 1.2 |
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--- |
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$id: http://devicetree.org/schemas/pci/snps,dw-pcie.yaml# |
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$schema: http://devicetree.org/meta-schemas/core.yaml# |
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title: Synopsys DesignWare PCIe interface |
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maintainers: |
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- Jingoo Han <[email protected]> |
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- Gustavo Pimentel <[email protected]> |
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description: | |
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Synopsys DesignWare PCIe host controller |
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allOf: |
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- $ref: /schemas/pci/pci-bus.yaml# |
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properties: |
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compatible: |
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anyOf: |
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- {} |
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- const: snps,dw-pcie |
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reg: |
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description: | |
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It should contain Data Bus Interface (dbi) and config registers for all |
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versions. |
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For designware core version >= 4.80, it may contain ATU address space. |
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minItems: 2 |
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maxItems: 5 |
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reg-names: |
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minItems: 2 |
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maxItems: 5 |
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items: |
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enum: [ dbi, dbi2, config, atu, app, elbi, mgmt, ctrl, parf, cfg, link, |
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ulreg, smu, mpu, apb, phy ] |
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num-lanes: |
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description: | |
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number of lanes to use (this property should be specified unless |
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the link is brought already up in firmware) |
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maximum: 16 |
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reset-gpio: |
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description: GPIO pin number of PERST# signal |
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maxItems: 1 |
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deprecated: true |
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reset-gpios: |
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description: GPIO controlled connection to PERST# signal |
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maxItems: 1 |
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interrupts: true |
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interrupt-names: true |
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clocks: true |
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snps,enable-cdm-check: |
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type: boolean |
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description: | |
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This is a boolean property and if present enables |
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automatic checking of CDM (Configuration Dependent Module) registers |
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for data corruption. CDM registers include standard PCIe configuration |
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space registers, Port Logic registers, DMA and iATU (internal Address |
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Translation Unit) registers. |
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num-viewport: |
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description: | |
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number of view ports configured in hardware. If a platform |
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does not specify it, the driver autodetects it. |
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deprecated: true |
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additionalProperties: true |
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required: |
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- reg |
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- reg-names |
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- compatible |
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examples: |
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- | |
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bus { |
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#address-cells = <1>; |
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#size-cells = <1>; |
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pcie@dfc00000 { |
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device_type = "pci"; |
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compatible = "snps,dw-pcie"; |
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reg = <0xdfc00000 0x0001000>, /* IP registers */ |
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<0xd0000000 0x0002000>; /* Configuration space */ |
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reg-names = "dbi", "config"; |
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#address-cells = <3>; |
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#size-cells = <2>; |
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ranges = <0x81000000 0 0x00000000 0xde000000 0 0x00010000>, |
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<0x82000000 0 0xd0400000 0xd0400000 0 0x0d000000>; |
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interrupts = <25>, <24>; |
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#interrupt-cells = <1>; |
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num-lanes = <1>; |
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}; |
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};
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