56 lines
1.8 KiB
Plaintext
56 lines
1.8 KiB
Plaintext
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Aardvark PCIe controller
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This PCIe controller is used on the Marvell Armada 3700 ARM64 SoC.
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The Device Tree node describing an Aardvark PCIe controller must
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contain the following properties:
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- compatible: Should be "marvell,armada-3700-pcie"
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- reg: range of registers for the PCIe controller
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- interrupts: the interrupt line of the PCIe controller
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- #address-cells: set to <3>
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- #size-cells: set to <2>
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- device_type: set to "pci"
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- ranges: ranges for the PCI memory and I/O regions
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- #interrupt-cells: set to <1>
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- msi-controller: indicates that the PCIe controller can itself
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handle MSI interrupts
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- msi-parent: pointer to the MSI controller to be used
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- interrupt-map-mask and interrupt-map: standard PCI properties to
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define the mapping of the PCIe interface to interrupt numbers.
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- bus-range: PCI bus numbers covered
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In addition, the Device Tree describing an Aardvark PCIe controller
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must include a sub-node that describes the legacy interrupt controller
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built into the PCIe controller. This sub-node must have the following
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properties:
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- interrupt-controller
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- #interrupt-cells: set to <1>
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Example:
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pcie0: pcie@d0070000 {
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compatible = "marvell,armada-3700-pcie";
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device_type = "pci";
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reg = <0 0xd0070000 0 0x20000>;
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#address-cells = <3>;
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#size-cells = <2>;
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bus-range = <0x00 0xff>;
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interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
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#interrupt-cells = <1>;
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msi-controller;
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msi-parent = <&pcie0>;
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ranges = <0x82000000 0 0xe8000000 0 0xe8000000 0 0x1000000 /* Port 0 MEM */
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0x81000000 0 0xe9000000 0 0xe9000000 0 0x10000>; /* Port 0 IO*/
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interrupt-map-mask = <0 0 0 7>;
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interrupt-map = <0 0 0 1 &pcie_intc 0>,
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<0 0 0 2 &pcie_intc 1>,
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<0 0 0 3 &pcie_intc 2>,
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<0 0 0 4 &pcie_intc 3>;
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pcie_intc: interrupt-controller {
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interrupt-controller;
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#interrupt-cells = <1>;
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};
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};
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