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SubjectRe: [PATCH V3 1/2] dt-bindings/irq: add binding for NXP INTMUX interrupt multiplexer
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On 20/12/19 5:10 PM, Lokesh Vutla wrote:
>
>
> On 20/12/19 1:07 PM, Joakim Zhang wrote:
>> 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
>
> As per the xlate function, 1st cell is channel index and 2nd cell is hw
> interrupt number no?

Sorry my bad, I read it wrong. Ignore this comment.

Thanks and regards,
Lokesh

>
> Thanks and regards,
> Lokesh
>
>> +
>> +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>;
>> + };
>> +
>>
>
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>

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