class_find_device_by_of_node
bridge_dev = class_find_device_by_of_node(&fpga_bridge_class, np);
mgr_dev = class_find_device_by_of_node(&fpga_mgr_class, node);
led_dev = class_find_device_by_of_node(&leds_class, led_node);
dev = class_find_device_by_of_node(&mux_class, np);
d = class_find_device_by_of_node(&mdio_bus_class, mdio_bus_np);
target_dev = class_find_device_by_of_node(&framer_class, args->np);
target_dev = class_find_device_by_of_node(&phy_class, args->np);
dev = class_find_device_by_of_node(®ulator_class, np);
dev = class_find_device_by_of_node(&spi_controller_class, node);
dev = class_find_device_by_of_node(&spi_target_class, node);