在linux驱动程序中查找devicetree中的子项

Question

我在我的设备中找到孩子有问题。我正在编写linux驱动程序，我正在使用函数＆＃39; of_match_device＆＃39;和＆＃39; of_find_matching_node＆＃39;。当我在检查时，我找到了孩子，我发现这是我的父母。我做错了什么？父母和孩子的兼容性应该在相同的结构中定义＆＃39; of_device_id＆＃39 ;?我的儿童标签是正确的吗？

这是我在devicetree中的声明：

soc: h2f_lw_bridge@0xff200000 {
    compatible = "altr,socfpga-mysoftip";
    reg = <0xff200000 0x00200000>;
    //interrupts = <GIC_SPI 40 IRQ_TYPE_EDGE_RISING>;
    #address-cells = < 2 >;
    #size-cells = < 1 >;
    ranges = <0 0x100 0xff200100 0x4
          0 0x200 0xff200200 0x100>;

    hw_tester_gpio: tester_gpio@0x000000100 {
        compatible = "altr,socfpga-gpio";
        reg = <0 0x100 0x4>;
        //reg = <0xff200100 0x4>;
        interrupt = <GIC_SPI 40 IRQ_TYPE_EDGE_RISING>;
    };

    reconig_data_clk: reconfig_pll@0x000000200 {
        compatible = "altr,socfpga-pll";
        reg = <0 0x200 0x100>;
        //reg = <0xFF200200 0x100>;
    };
};

我如何获取节点（我的linux驱动程序的片段）：

struct h2f_lw_bridge *h2f_lw;

struct h2f_lw_bridge {
    struct device *dev;
    void __iomem *base;
    void __iomem *base_of;
    void __iomem *base_node;
    const struct of_device_id *match;
    struct device_node *node;
};

...

static const struct of_device_id _driver_id[] = {
    {.compatible = "altr,socfpga-mysoftip"}, //parent
    {.compatible = "altr,socfpga-gpio"}, //child
    {.compatible = "altr,socfpga-pll"}, //child
    {}  
};

...

h2f_lw->match = of_match_device(_driver_id, &pdev->dev);
h2f_lw->node = of_find_matching_node(NULL,h2f_lw->match);
if (!h2f_lw->match)
    return -EINVAL;

printk("h2f_lw->node: '%s' - pdev->dev.of_node: '%s' - h2f_lw->node: '%s'\n",h2f_lw->node->name,pdev->dev.of_node->name,h2f_lw->node->name);

来自我的linux的信息：