Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit dc4dae00 authored by Mark Rutland's avatar Mark Rutland Committed by Rob Herring
Browse files

Docs: dt: add #msi-cells to GICv3 ITS binding 



The GICv3 ITS uses sideband master identification data (known as a
DeviceID) to identify which master wrote to a doorbell, and this data is
used to determine how to react in response to the write.

Commit 1e6db000 ("irqchip/gicv3-its: Add platform MSI support")
added support per this binding, but failed to update the documentation.
This patch fixes the documentation.

Signed-off-by: default avatarMark Rutland <mark.rutland@arm.com>
Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: default avatarRob Herring <robh@kernel.org>
parent d7ba2a02

Documentation/devicetree/bindings/arm/gic-v3.txt

+5 −0
Original line number Diff line number Diff line
@@ -57,6 +57,8 @@ used to route Message Signalled Interrupts (MSI) to the CPUs. 
These nodes must have the following properties:

- compatible : Should at least contain  "arm,gic-v3-its".

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

- #msi-cells: Must be <1>. The single msi-cell is the DeviceID of the device

  which will generate the MSI.

- reg: Specifies the base physical address and size of the ITS

  registers.
@@ -83,6 +85,7 @@ Examples: 
		gic-its@2c200000 {

			compatible = "arm,gic-v3-its";

			msi-controller;

			#msi-cells = <1>;

			reg = <0x0 0x2c200000 0 0x200000>;

		};

	};
@@ -107,12 +110,14 @@ Examples: 
		gic-its@2c200000 {

			compatible = "arm,gic-v3-its";

			msi-controller;

			#msi-cells = <1>;

			reg = <0x0 0x2c200000 0 0x200000>;

		};



		gic-its@2c400000 {

			compatible = "arm,gic-v3-its";

			msi-controller;

			#msi-cells = <1>;

			reg = <0x0 0x2c400000 0 0x200000>;

		};

	};