def METHOD_NAME(self, dev_path):
    dev = None
    devtype = 'chardev'
    daxreg = 'daxregion'
    list = self._cmd_out_to_json('list')
    for d in list:
        if daxreg in d:
            devices = d[daxreg]['devices']
            for device in devices:
                if devtype in device and \
                        os.path.join('/dev', device[devtype]) == dev_path:
                    # only params from daxreg are interested at this point,
                    # other values are read by _get_dev_info() earlier
                    dev = d[daxreg]
    if not dev:
        raise futils.Fail('ndctl does not recognize the device: "{}"'
                          .format(dev_path))
    return dev