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Diffstat (limited to 'Documentation/devicetree/bindings/pci/fsl,layerscape-pcie-ep.yaml')
-rw-r--r-- | Documentation/devicetree/bindings/pci/fsl,layerscape-pcie-ep.yaml | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/fsl,layerscape-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/fsl,layerscape-pcie-ep.yaml new file mode 100644 index 000000000000..399efa7364c9 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/fsl,layerscape-pcie-ep.yaml @@ -0,0 +1,102 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pci/fsl,layerscape-pcie-ep.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Freescale Layerscape PCIe Endpoint(EP) controller + +maintainers: + - Frank Li <Frank.Li@nxp.com> + +description: + This PCIe EP controller is based on the Synopsys DesignWare PCIe IP. + + This controller derives its clocks from the Reset Configuration Word (RCW) + which is used to describe the PLL settings at the time of chip-reset. + + Also as per the available Reference Manuals, there is no specific 'version' + register available in the Freescale PCIe controller register set, + which can allow determining the underlying DesignWare PCIe controller version + information. + +properties: + compatible: + enum: + - fsl,ls2088a-pcie-ep + - fsl,ls1088a-pcie-ep + - fsl,ls1046a-pcie-ep + - fsl,ls1028a-pcie-ep + - fsl,lx2160ar2-pcie-ep + + reg: + maxItems: 2 + + reg-names: + items: + - const: regs + - const: addr_space + + fsl,pcie-scfg: + $ref: /schemas/types.yaml#/definitions/phandle + description: A phandle to the SCFG device node. The second entry is the + physical PCIe controller index starting from '0'. This is used to get + SCFG PEXN registers. + + big-endian: + $ref: /schemas/types.yaml#/definitions/flag + description: If the PEX_LUT and PF register block is in big-endian, specify + this property. + + dma-coherent: true + + interrupts: + minItems: 1 + maxItems: 2 + + interrupt-names: + minItems: 1 + maxItems: 2 + +required: + - compatible + - reg + - reg-names + +allOf: + - if: + properties: + compatible: + enum: + - fsl,ls1028a-pcie-ep + - fsl,ls1046a-pcie-ep + - fsl,ls1088a-pcie-ep + then: + properties: + interrupt-names: + items: + - const: pme + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + + soc { + #address-cells = <2>; + #size-cells = <2>; + + pcie_ep1: pcie-ep@3400000 { + compatible = "fsl,ls1028a-pcie-ep"; + reg = <0x00 0x03400000 0x0 0x00100000 + 0x80 0x00000000 0x8 0x00000000>; + reg-names = "regs", "addr_space"; + interrupts = <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; /* PME interrupt */ + interrupt-names = "pme"; + num-ib-windows = <6>; + num-ob-windows = <8>; + status = "disabled"; + }; + }; +... |