遍历节点设备属性

内核原型为__of_find_property(dev_node, "compatible", len);

static struct property *BAD_of_find_property(const struct device_node *np,
const char *name, int *lenp)
{
struct property *pp;

    if (!np)
return NULL;

    for (pp = np->properties; pp; pp = pp->next)

    {
printk(KERN_EMERG "property:%s\n", pp->name);

                if (strncmp(pp->name, name, strlen(lenp)) == 0)

                 {
printk(KERN_EMERG "OK!\n");
}

    }

    return pp;
}

struct property *prop;

prop = BAD_of_find_property(dev_node, "compatible", len);

获取属性值：const char *cp = of_prop_next_string(prop,NULL);