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Diffstat (limited to 'Documentation/devicetree/bindings/interrupt-controller/nxp,imx-irqsteer.txt')
-rw-r--r-- | Documentation/devicetree/bindings/interrupt-controller/nxp,imx-irqsteer.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/nxp,imx-irqsteer.txt b/Documentation/devicetree/bindings/interrupt-controller/nxp,imx-irqsteer.txt new file mode 100644 index 000000000000..671622c296f0 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/nxp,imx-irqsteer.txt @@ -0,0 +1,44 @@ +* NXP i.MX8QM/i.MX8QXP IRQSteer Interrupt Controllers + +Required properties: +- compatible: "nxp,imx-irqsteer". +- reg: should contain IC registers location and length. +- clocks : ipg clock for irqsteer. +- interrupts: an interrupt to the parent interrupt controller. +- interrupt-controller: identifies the node as an interrupt controller. +- interrupt-parent: gic interrupt controller, link to parent +- #interrupt-cells: the number of cells to define an interrupt, should be 2. + The first cell is the IRQ number, the second cell is used to specify + one of the supported IRQ types: + IRQ_TYPE_EDGE_RISING = low-to-high edge triggered, + IRQ_TYPE_EDGE_FALLING = high-to-low edge triggered, + IRQ_TYPE_LEVEL_HIGH = active high level-sensitive, + IRQ_TYPE_LEVEL_LOW = active low level-sensitive. + +Optional properties: +- nxp,irqsteer_chans: specify the interrupt channel number, default is 1. + +Examples: + + irqsteer_hdmi: irqsteer@56260000 { + compatible = "nxp,imx-irqsteer"; + reg = <0x0 0x56260000 0x0 0x1000>; + interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>; + interrupt-controller; + interrupt-parent = <&gic>; + #interrupt-cells = <2>; + power-domains = <&pd_hdmi_i2c0>; + }; + + i2c0_hdmi: i2c@56266000 { + compatible = "fsl,imx8qm-lpi2c"; + reg = <0x0 0x56266000 0x0 0x1000>; + interrupts = <8 IRQ_TYPE_LEVEL_HIGH>; + interrupt-parent = <&irqsteer_hdmi>; + clocks = <&clk IMX8QM_HDMI_I2C0_CLK>; + clock-names = "per"; + assigned-clocks = <&clk IMX8QM_HDMI_I2C0_CLK>; + assigned-clock-rates = <24000000>; + power-domains = <&pd_hdmi_i2c0>; + status = "disabled"; + }; |