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Subject[PATCH V3 1/2] dt-bindings/irq: add binding for NXP INTMUX interrupt multiplexer
Date
This patch adds the DT bindings for the NXP INTMUX interrupt multiplexer
for i.MX8 family SoCs.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
---
.../interrupt-controller/fsl,intmux.txt | 36 +++++++++++++++++++
1 file changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/fsl,intmux.txt

diff --git a/Documentation/devicetree/bindings/interrupt-controller/fsl,intmux.txt b/Documentation/devicetree/bindings/interrupt-controller/fsl,intmux.txt
new file mode 100644
index 000000000000..3ebe9cac5f20
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/fsl,intmux.txt
@@ -0,0 +1,36 @@
+Freescale INTMUX interrupt multiplexer
+
+Required properties:
+
+- compatible: Should be:
+ - "fsl,imx-intmux"
+- reg: Physical base address and size of registers.
+- interrupts: Should contain the parent interrupt lines (up to 8) used to
+ multiplex the input interrupts.
+- clocks: Should contain one clock for entry in clock-names.
+- 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 2.
+ - the 1st cell: hardware interrupt number
+ - the 2nd cell: channel index, value must smaller than channels used
+
+Optional properties:
+
+- fsl,intmux_chans: The number of channels used for interrupt source. The
+ Maximum value is 8. If this property is not set in DT then driver uses
+ 1 channel by default.
+
+Example:
+
+ intmux@37400000 {
+ compatible = "fsl,imx-intmux";
+ reg = <0x37400000 0x1000>;
+ interrupts = <GIC_SPI 16 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk IMX8QM_CM40_IPG_CLK>;
+ clock-names = "ipg";
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+
--
2.17.1
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