interrupt cells of i.MX6 in devicetree

[宗標廖]

Hello Community

in linux4.1.15/Documentation/devicetree/bindings/interrupt-controller/interruputs.txt, it only explains the meaning of interrupt specifier with one cell and two cells.

But in imx6qdl.dtsi, interrupt specifier has three cells, for example:

----------

src: src@020d8000 {
compatible = "fsl,imx6q-src", "fsl,imx51-src";
reg = <0x020d8000 0x4000>;
interrupts = <0 91 IRQ_TYPE_LEVEL_HIGH>,
<0 96 IRQ_TYPE_LEVEL_HIGH>;
#reset-cells = <1>;
};

-----------

I understood that the second cell means index of the interrupt and the third cell specifies trigger type and level flags.

What does the first cell mean.

Does it mean: 1-irq masked and 0-irq is not masked ?

Best Regards

ZongbiaoLiao

[igorpadykov]

Hi ZongbiaoLiao

please check p.8 AN5125 Introductin to Devoce Trees

http://www.nxp.com/assets/documents/data/en/application-notes/AN5125.pdf 

Best regards
igor
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