syscon_get_by_ofw_node
if (syscon_get_by_ofw_node(dev, parent_node, &sc->sc_grf) != 0) {
error = syscon_get_by_ofw_node(dev, OF_parent(ofw_bus_get_node(dev)),
error = syscon_get_by_ofw_node(dev, node, &syscon);
if (syscon_get_by_ofw_node(dev, syscon_node, &syscon) != 0) {
int syscon_get_by_ofw_node(device_t cdev, phandle_t node, struct syscon **syscon);
error = syscon_get_by_ofw_node(dev, OF_parent(ofw_bus_get_node(dev)),