方法一：
- interrupts-extended: 指定中断和父中断的另一种形式，允许多个父中断。这优先于'interrupts'和'interrupt-parent'。
#interrupt-cells = <2>; interrupts-extended = <&gpio1 6 0>, <&gpio2 1 0>;
知识点：
描述产生中断的设备的节点必须包含“interrupts”属性或“interrupts-extended”属性，或者两者都包含。如果两者都存在，则后者应优先;提供前者可能只是为了与不识别后者的软件兼容。这些属性包含一个中断说明符列表，每个输出一个中断。中断说明符的格式由中断路由到的中断控制器决定。
Example:
interrupt-parent = <&intc1>; interrupts = <5 0>, <6 0>;
“interrupt-parent”属性用于指定中断路由到的控制器，并包含一个指向中断控制器节点的phandle。此属性是继承的，因此可以在中断客户端节点或其任何父节点中指定。“Interrupts”属性中列出的中断总是引用节点的中断父节点。
当一个节点需要引用多个中断父节点时，“interrupts-extended”属性是一种特殊的形式。此属性中的每个条目都包含父phandle和中断说明符。"interrupts-extended"只能在设备有多个中断父节点时使用。
Example:
interrupts-extended = <&intc1 5 1>, <&intc2 1 0>;
方法二：
interrupts = <0 1 2>;
interrupt-map = <0 &intc 0 134 0
1 &intc 0 140 0
2 &spmi 0 0x9 0 0>;
interrupt-names = "core_irq", "async_irq", "pmic_id_irq";
interrupt-map-mask = <0 0 0 0>;
intc节点的#interrupt-cells值为<3>，spmi节点的#interrupt-cells值为4(这意味着需要在各自的phandles中使用不同的参数)。
interrupt-names字段是可选的，但是允许你通过名称而不是代码中的数字请求irq(例如，使用platform_get_irq_byname()而不是platform_get_irq())。
参考-->kernel document：
# cat Documentation/devicetree/bindings/gpio/brcm,brcmstb-gpio.txt
Broadcom STB "UPG GIO" GPIO controller
The controller's registers are organized as sets of eight 32-bit
registers with each set controlling a bank of up to 32 pins. A single
interrupt is shared for all of the banks handled by the controller.
Required properties:
- compatible:
Must be "brcm,brcmstb-gpio"
- reg:
Define the base and range of the I/O address space containing
the brcmstb GPIO controller registers
- #gpio-cells:
Should be <2>. The first cell is the pin number (within the controller's
pin space), and the second is used for the following:
bit[0]: polarity (0 for active-high, 1 for active-low)
- gpio-controller:
Specifies that the node is a GPIO controller.
- brcm,gpio-bank-widths:
Number of GPIO lines for each bank. Number of elements must
correspond to number of banks suggested by the 'reg' property.
Optional properties:
- interrupts:
The interrupt shared by all GPIO lines for this controller.
- interrupt-parent:
phandle of the parent interrupt controller
- interrupts-extended:
Alternate form of specifying interrupts and parents that allows for
multiple parents. This takes precedence over 'interrupts' and
'interrupt-parent'. Wakeup-capable GPIO controllers often route their
wakeup interrupt lines through a different interrupt controller than the
primary interrupt line, making this property necessary.
- #interrupt-cells:
Should be <2>. The first cell is the GPIO number, the second should specify
flags. The following subset of flags is supported:
- bits[3:0] trigger type and level flags
1 = low-to-high edge triggered
2 = high-to-low edge triggered
4 = active high level-sensitive
8 = active low level-sensitive
Valid combinations are 1, 2, 3, 4, 8.
See also Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
- interrupt-controller:
Marks the device node as an interrupt controller
- wakeup-source:
GPIOs for this controller can be used as a wakeup source
Example:
upg_gio: gpio@f040a700 {
#gpio-cells = <2>;
#interrupt-cells = <2>;
compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
gpio-controller;
interrupt-controller;
reg = <0xf040a700 0x80>;
interrupt-parent = <&irq0_intc>;
interrupts = <0x6>;
brcm,gpio-bank-widths = <32 32 32 24>;
};
upg_gio_aon: gpio@f04172c0 {
#gpio-cells = <2>;
#interrupt-cells = <2>;
compatible = "brcm,bcm7445-gpio", "brcm,brcmstb-gpio";
gpio-controller;
interrupt-controller;
reg = <0xf04172c0 0x40>;
interrupt-parent = <&irq0_aon_intc>;
interrupts = <0x6>;
interrupts-extended = <&irq0_aon_intc 0x6>,
<&aon_pm_l2_intc 0x5>;
wakeup-source;
brcm,gpio-bank-widths = <18 4>;
};
标签：parent,中断,interrupts,controller,linux,interrupt,gpio From： https://www.cnblogs.com/wanglouxiaozi/p/16992882.html