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Add Altera PCIe MSI driver. This soft IP supports a configurable number of vectors, which is a DTS parameter. [bhelgaas: Kconfig depend on PCIE_ALTERA, typos, whitespace] Signed-off-by: Ley Foon Tan <lftan@altera.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Rob Herring <robh@kernel.org>
29 lines
902 B
Plaintext
29 lines
902 B
Plaintext
* Altera PCIe MSI controller
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Required properties:
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- compatible: should contain "altr,msi-1.0"
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- reg: specifies the physical base address of the controller and
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the length of the memory mapped region.
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- reg-names: must include the following entries:
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"csr": CSR registers
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"vector_slave": vectors slave port region
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- interrupt-parent: interrupt source phandle.
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- interrupts: specifies the interrupt source of the parent interrupt
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controller. The format of the interrupt specifier depends on the
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parent interrupt controller.
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- num-vectors: number of vectors, range 1 to 32.
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- msi-controller: indicates that this is MSI controller node
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Example
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msi0: msi@0xFF200000 {
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compatible = "altr,msi-1.0";
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reg = <0xFF200000 0x00000010
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0xFF200010 0x00000080>;
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reg-names = "csr", "vector_slave";
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interrupt-parent = <&hps_0_arm_gic_0>;
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interrupts = <0 42 4>;
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msi-controller;
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num-vectors = <32>;
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};
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