of_node_init

static inline void of_node_init(struct device_node *node)
{
#if defined(CONFIG_OF_KOBJ)
    kobject_init(&node->kobj, &of_node_ktype);
#endif
    node->fwnode.ops = &of_fwnode_ops;
}

const struct fwnode_operations of_fwnode_ops = {
    .get = of_fwnode_get,
    .put = of_fwnode_put,
    .device_is_available = of_fwnode_device_is_available,
    .device_get_match_data = of_fwnode_device_get_match_data,
    .property_present = of_fwnode_property_present,
    .property_read_int_array = of_fwnode_property_read_int_array,
    .property_read_string_array = of_fwnode_property_read_string_array,
    .get_name = of_fwnode_get_name,
    .get_name_prefix = of_fwnode_get_name_prefix,
    .get_parent = of_fwnode_get_parent,
    .get_next_child_node = of_fwnode_get_next_child_node,
    .get_named_child_node = of_fwnode_get_named_child_node,
    .get_reference_args = of_fwnode_get_reference_args,
    .graph_get_next_endpoint = of_fwnode_graph_get_next_endpoint,
    .graph_get_remote_endpoint = of_fwnode_graph_get_remote_endpoint,
    .graph_get_port_parent = of_fwnode_graph_get_port_parent,
    .graph_parse_endpoint = of_fwnode_graph_parse_endpoint,
    .add_links = of_fwnode_add_links,
};

struct device_node {
    const char *name;
    phandle phandle;
    const char *full_name;
    struct fwnode_handle fwnode;

    struct    property *properties;
    struct    property *deadprops;    /* removed properties */
    struct    device_node *parent;
    struct    device_node *child;
    struct    device_node *sibling;
#if defined(CONFIG_OF_KOBJ)
    struct    kobject kobj;
#endif
    unsigned long _flags;
    void    *data;
#if defined(CONFIG_SPARC)
    unsigned int unique_id;
    struct of_irq_controller *irq_trans;
#endif
};

#define MAX_PHANDLE_ARGS 16
struct of_phandle_args {
    struct device_node *np;
    int args_count;
    uint32_t args[MAX_PHANDLE_ARGS];
};