59 lines
1.7 KiB
Plaintext
Executable file
59 lines
1.7 KiB
Plaintext
Executable file
* NXP LPC32xx MIC, SIC1 and SIC2 Interrupt Controllers
|
|
|
|
Required properties:
|
|
- compatible: "nxp,lpc3220-mic" or "nxp,lpc3220-sic".
|
|
- reg: should contain IC registers location and length.
|
|
- interrupt-controller: identifies the node as an interrupt controller.
|
|
- #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.
|
|
Reset value is IRQ_TYPE_LEVEL_LOW.
|
|
|
|
Optional properties:
|
|
- interrupts: empty for MIC interrupt controller, cascaded MIC
|
|
hardware interrupts for SIC1 and SIC2
|
|
|
|
Examples:
|
|
|
|
/* LPC32xx MIC, SIC1 and SIC2 interrupt controllers */
|
|
mic: interrupt-controller@40008000 {
|
|
compatible = "nxp,lpc3220-mic";
|
|
reg = <0x40008000 0x4000>;
|
|
interrupt-controller;
|
|
#interrupt-cells = <2>;
|
|
};
|
|
|
|
sic1: interrupt-controller@4000c000 {
|
|
compatible = "nxp,lpc3220-sic";
|
|
reg = <0x4000c000 0x4000>;
|
|
interrupt-controller;
|
|
#interrupt-cells = <2>;
|
|
|
|
interrupt-parent = <&mic>;
|
|
interrupts = <0 IRQ_TYPE_LEVEL_LOW>,
|
|
<30 IRQ_TYPE_LEVEL_LOW>;
|
|
};
|
|
|
|
sic2: interrupt-controller@40010000 {
|
|
compatible = "nxp,lpc3220-sic";
|
|
reg = <0x40010000 0x4000>;
|
|
interrupt-controller;
|
|
#interrupt-cells = <2>;
|
|
|
|
interrupt-parent = <&mic>;
|
|
interrupts = <1 IRQ_TYPE_LEVEL_LOW>,
|
|
<31 IRQ_TYPE_LEVEL_LOW>;
|
|
};
|
|
|
|
/* ADC */
|
|
adc@40048000 {
|
|
compatible = "nxp,lpc3220-adc";
|
|
reg = <0x40048000 0x1000>;
|
|
interrupt-parent = <&sic1>;
|
|
interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;
|
|
};
|