__nvmem_device_get
nvmem = __nvmem_device_get(nvmem_np, device_match_of_node);
return __nvmem_device_get((void *)dev_name, device_match_name);
return __nvmem_device_get(data, match);
nvmem = __nvmem_device_get((void *)lookup->nvmem_name,
nvmem = __nvmem_device_get(nvmem_np, device_match_of_node);