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authorLucas Stach <l.stach@pengutronix.de>2018-12-17 17:01:19 +0300
committerMarc Zyngier <marc.zyngier@arm.com>2018-12-18 18:36:57 +0300
commitff63495eff8139af1d33e9733d74b399fc8a84e7 (patch)
tree15a4fa306a796d755c57db99c17a38bba65adc52 /Documentation/devicetree/bindings/interrupt-controller
parentda0abe1a04110491697ca9ff146e1107f40b4808 (diff)
downloadlinux-ff63495eff8139af1d33e9733d74b399fc8a84e7.tar.xz
dt-bindings/irq: Add binding for Freescale IRQSTEER multiplexer
This adds the DT binding for the Freescale IRQSTEER interrupt multiplexer found in the i.MX8 familiy SoCs. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'Documentation/devicetree/bindings/interrupt-controller')
-rw-r--r--Documentation/devicetree/bindings/interrupt-controller/fsl,irqsteer.txt34
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diff --git a/Documentation/devicetree/bindings/interrupt-controller/fsl,irqsteer.txt b/Documentation/devicetree/bindings/interrupt-controller/fsl,irqsteer.txt
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+Freescale IRQSTEER Interrupt multiplexer
+
+Required properties:
+
+- compatible: should be:
+ - "fsl,imx8m-irqsteer"
+ - "fsl,imx-irqsteer"
+- reg: Physical base address and size of registers.
+- interrupts: Should contain the parent interrupt line used to multiplex the
+ input interrupts.
+- clocks: Should contain one clock for entry in clock-names
+ see Documentation/devicetree/bindings/clock/clock-bindings.txt
+- clock-names:
+ - "ipg": main logic clock
+- interrupt-controller: Identifies the node as an interrupt controller.
+- #interrupt-cells: Specifies the number of cells needed to encode an
+ interrupt source. The value must be 1.
+- fsl,channel: The output channel that all input IRQs should be steered into.
+- fsl,irq-groups: Number of IRQ groups managed by this controller instance.
+ Each group manages 64 input interrupts.
+
+Example:
+
+ interrupt-controller@32e2d000 {
+ compatible = "fsl,imx8m-irqsteer", "fsl,imx-irqsteer";
+ reg = <0x32e2d000 0x1000>;
+ interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk IMX8MQ_CLK_DISP_APB_ROOT>;
+ clock-names = "ipg";
+ fsl,channel = <0>;
+ fsl,irq-groups = <1>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };