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dt-bindings/interrupt-controller: Add DT binding for the Marvell GICP

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This commit adds the Device Tree binding documentation for the Marvell
GICP, an extension to the GIC that allows to trigger GIC SPI interrupts
using memory transactions. It is used by the ICU unit in the Marvell
CP110 block to turn wired interrupts inside the CP into SPI interrupts
at the GIC level in the AP.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Thomas Petazzoni 2017-06-21 15:29:12 +02:00 committed by Marc Zyngier
parent a162836622
commit 11f69da0da
1 changed files with 27 additions and 0 deletions
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Documentation/devicetree/bindings/interrupt-controller/marvell,gicp.txt Normal file
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Marvell GICP Controller
-----------------------
GICP is a Marvell extension of the GIC that allows to trigger GIC SPI
interrupts by doing a memory transaction. It is used by the ICU
located in the Marvell CP110 to turn wired interrupts inside the CP
into GIC SPI interrupts.
Required properties:
- compatible: Must be "marvell,ap806-gicp"
- reg: Must be the address and size of the GICP SPI registers
- marvell,spi-ranges: tuples of GIC SPI interrupts ranges available
for this GICP
- msi-controller: indicates that this is an MSI controller
Example:
gicp_spi: gicp-spi@3f0040 {
compatible = "marvell,ap806-gicp";
reg = <0x3f0040 0x10>;
marvell,spi-ranges = <64 64>, <288 64>;
msi-controller;
};