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Commit e684e258 authored by Suravee Suthikulpanit's avatar Suravee Suthikulpanit Committed by Jason Cooper
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irqchip: gic-v2m: Add DT bindings for GICv2m 



Update the GIC DT bindings to support GICv2m.

Signed-off-by: default avatarSuravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
[maz: split DT patch from main driver, updated changelog]
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1416941243-7181-3-git-send-email-marc.zyngier@arm.com


Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 853a33ce

Documentation/devicetree/bindings/arm/gic.txt

+53 −0
Original line number Diff line number Diff line
@@ -96,3 +96,56 @@ Example: 
		      <0x2c006000 0x2000>;

		interrupts = <1 9 0xf04>;

	};





* GICv2m extension for MSI/MSI-x support (Optional)



Certain revisions of GIC-400 supports MSI/MSI-x via V2M register frame(s).

This is enabled by specifying v2m sub-node(s).



Required properties:



- compatible	    : The value here should contain "arm,gic-v2m-frame".



- msi-controller    : Identifies the node as an MSI controller.



- reg		    : GICv2m MSI interface register base and size



Optional properties:



- arm,msi-base-spi  : When the MSI_TYPER register contains an incorrect

  		      value, this property should contain the SPI base of

		      the MSI frame, overriding the HW value.



- arm,msi-num-spis  : When the MSI_TYPER register contains an incorrect

  		      value, this property should contain the number of

		      SPIs assigned to the frame, overriding the HW value.



Example:



	interrupt-controller@e1101000 {

		compatible = "arm,gic-400";

		#interrupt-cells = <3>;

		#address-cells = <2>;

		#size-cells = <2>;

		interrupt-controller;

		interrupts = <1 8 0xf04>;

		ranges = <0 0 0 0xe1100000 0 0x100000>;

		reg = <0x0 0xe1110000 0 0x01000>,

		      <0x0 0xe112f000 0 0x02000>,

		      <0x0 0xe1140000 0 0x10000>,

		      <0x0 0xe1160000 0 0x10000>;

		v2m0: v2m@0x8000 {

			compatible = "arm,gic-v2m-frame";

			msi-controller;

			reg = <0x0 0x80000 0 0x1000>;

		};



		....



		v2mN: v2m@0x9000 {

			compatible = "arm,gic-v2m-frame";

			msi-controller;

			reg = <0x0 0x90000 0 0x1000>;

		};

	};