mirror of https://gitee.com/openkylin/linux.git
irqchip: gic-v2m: Add DT bindings for GICv2m
Update the GIC DT bindings to support GICv2m. Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> [maz: split DT patch from main driver, updated changelog] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1416941243-7181-3-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
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@ -96,3 +96,56 @@ Example:
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<0x2c006000 0x2000>;
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interrupts = <1 9 0xf04>;
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};
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* GICv2m extension for MSI/MSI-x support (Optional)
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Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).
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This is enabled by specifying v2m sub-node(s).
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Required properties:
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- compatible : The value here should contain "arm,gic-v2m-frame".
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- msi-controller : Identifies the node as an MSI controller.
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- reg : GICv2m MSI interface register base and size
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Optional properties:
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- arm,msi-base-spi : When the MSI_TYPER register contains an incorrect
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value, this property should contain the SPI base of
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the MSI frame, overriding the HW value.
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- arm,msi-num-spis : When the MSI_TYPER register contains an incorrect
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value, this property should contain the number of
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SPIs assigned to the frame, overriding the HW value.
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Example:
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interrupt-controller@e1101000 {
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compatible = "arm,gic-400";
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#interrupt-cells = <3>;
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#address-cells = <2>;
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#size-cells = <2>;
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interrupt-controller;
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interrupts = <1 8 0xf04>;
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ranges = <0 0 0 0xe1100000 0 0x100000>;
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reg = <0x0 0xe1110000 0 0x01000>,
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<0x0 0xe112f000 0 0x02000>,
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<0x0 0xe1140000 0 0x10000>,
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<0x0 0xe1160000 0 0x10000>;
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v2m0: v2m@0x8000 {
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compatible = "arm,gic-v2m-frame";
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msi-controller;
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reg = <0x0 0x80000 0 0x1000>;
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};
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....
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v2mN: v2m@0x9000 {
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compatible = "arm,gic-v2m-frame";
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msi-controller;
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reg = <0x0 0x90000 0 0x1000>;
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};
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};
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