N3000_NIOS_INIT
ret = regmap_read(nn->regmap, N3000_NIOS_INIT, &val);
ret = regmap_read(nn->regmap, N3000_NIOS_INIT, &val);
ret = regmap_write(nn->regmap, N3000_NIOS_INIT, val);
ret = regmap_read_poll_timeout(nn->regmap, N3000_NIOS_INIT, val,