设备树中的GPIO中断/EXTI如何设置？

我有以下 DTS 文件，但无法使 GPIO 外部中断正常工作。我已阅读有关中断概述的文档，并尝试启用 EXti 以控制 GPIOB 引脚 12。

• /dts-v1/;
• #include "STM32mp157.dtsi"
• #include "stm32mp15xa.dtsi"
• #include "stm32mp15-pinctrl.dtsi"
• #include "stm32mp15xxac-pinctrl.dtsi"
• #include "stm32mp15xx-dkx.dtsi"
• / {
•         model = "STMicroelectronics STM32MP157A-DK1 Discovery Board";
•         compatible = "st,stm32mp157a-dk1", "st,stm32mp157";
•         chosen {
•                 stdout-path = "serial0:115200n8";
•         };
•         button {
•                 compatible = "test,button";
•                 input-gpios = <&gpiob 12 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; //Works with pull-up once the driver is loaded.
•                 interrupts-extended = <&gpiob 12 IRQ_TYPE_EDGE_FALLING>;
•                 interrupt-names = "qwerty";
•                 status = "okay";
•         };
•         led {
•                 extern-led {
•                         compatible = "test,led";
•                         gpios = <&gpiob 10 GPIO_ACTIVE_HIGH>;
•                         linux,default-trigger = "cpu";
•                 };
•         };
• };
  

我遇到的问题是，对于我所有的 gpio_to_irq() 调用，我得到以下信息：

• [   64.996864] platformdev: loading out-of-tree module taints kernel.
• [   65.003005] mod_probe() function was called.
• [   65.006308] mod_probe got miscdev minor id: 125
• [   65.010898] gpio_to_irq(0) = 88
• [   65.015773] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 1 already requested.
• [   65.022853] gpio_to_irq(1) = -6
• [   65.025872] gpio_to_irq(2) = 89
• [   65.028910] gpio_to_irq(3) = 90
• [   65.032338] gpio_to_irq(4) = 91
• [   65.035218] gpio_to_irq(5) = 92
• [   65.038271] gpio_to_irq(6) = 93
• [   65.041395] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 7 already requested.
• [   65.049669] gpio_to_irq(7) = -6
• [   65.052846] gpio_to_irq(8) = 94
• [   65.055812] gpio_to_irq(9) = 95
• [   65.058943] gpio_to_irq(10) = 96
• [   65.062249] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 11 already requested.
• [   65.070436] gpio_to_irq(11) = -6
• [   65.073796] gpio_to_irq(12) = 97
• [   65.076859] gpio_to_irq(13) = 98
• [   65.080112] gpio_to_irq(14) = 99
• [   65.083319] gpio_to_irq(15) = 100
• [   65.086619] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 0 already requested.
• [   65.094764] gpio_to_irq(16) = -6
• [   65.098248] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 1 already requested.
• [   65.106281] gpio_to_irq(17) = -6
• [   65.109559] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 2 already requested.
• [   65.117624] gpio_to_irq(18) = -6
• [   65.120821] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 3 already requested.
• [   65.128995] gpio_to_irq(19) = -6
• [   65.132198] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 4 already requested.
• [   65.140258] gpio_to_irq(20) = -6
• [   65.143562] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 5 already requested.
• [   65.151648] gpio_to_irq(21) = -6
• [   65.154987] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 6 already requested.
• [   65.163127] gpio_to_irq(22) = -6
• [   65.166210] gpio_to_irq(23) = 78
• [   65.169463] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 8 already requested.
• [   65.177710] gpio_to_irq(24) = -6
• [   65.180905] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 9 already requested.
• [   65.189071] gpio_to_irq(25) = -6
• [   65.192273] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 10 already requested.
• [   65.200433] gpio_to_irq(26) = -6
• [   65.203808] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 11 already requested.
• [   65.212052] gpio_to_irq(27) = -6
• [   65.215234] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 12 already requested.
• [   65.223441] gpio_to_irq(28) = -6
• [   65.226725] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 13 already requested.
• [   65.235007] gpio_to_irq(29) = -6
• [   65.238204] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 14 already requested.
• [   65.246450] gpio_to_irq(30) = -6
• [   65.249632] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 15 already requested.
• [   65.258245] gpio_to_irq(31) = -6
• [   65.261203] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 0 already requested.
• [   65.269297] gpio_to_irq(32) = -6
• [   65.272615] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 1 already requested.
• [   65.280607] gpio_to_irq(33) = -6
• [   65.283951] stm32mp157-pinctrl soc:pin-controller@50002000: irq line 2 already requested.
• [   65.292116] gpio_to_irq(34) = -6
  

当我对 EXTI 引脚 12 输入执行 IRQ 请求时，使用上面提供的 gpio_to_irq 编号（#97），我得到了 IRQ，但它没有触发，因为我相信 EXTI 控制器没有正确监听 GPIOB 引脚 12。
我想连接到 gpio 28（GPIOB 引脚 12），但是 GPIOA 引脚 12 已经声明了中断。那么我该如何更改 EXTI 控制器以遵循我在 DTS 文件中定义的内容并改为监听 GPIOB 12 ？
我尝试了以下 DTS 编辑：
中断扩展 = <&exti 28 IRQ_TYPE_EDGE_FALLING>；
------
中断扩展 = <&gpiob 12 IRQ_TYPE_EDGE_FALLING>；
------
中断父母= <&gpiob>;
中断 = <12 IRQ_TYPE_EDGE_FALLING>；
------
如果有人能解释我的 DTS 文件应该读取什么，我将不胜感激。
编辑：我暂时将输入按钮连接到 GPIO A12 引脚，linux 中断按预期工作，那么是什么配置错误导致 EXTI 未连接到 GPIO 端口 B？我不能使用 pin A12，我更想了解这个外围设备是如何配置的。