pmf_call_function
extern int pmf_call_function(struct device_node *target, const char *name,
EXPORT_SYMBOL_GPL(pmf_call_function);
pmf_call_function(cpus, "cpu-timebase", &args);
rc = pmf_call_function(rt->node, #name "-mute", &args); \
err = pmf_call_function(rt->node, name, &args);
rc = pmf_call_function(rt->node, "hw-reset", &args);