SNVS_LPSR
regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr);
regmap_write(data->regmap, data->offset + SNVS_LPSR, SNVS_LPSR_LPTA);
regmap_read(data->regmap, data->offset + SNVS_LPSR, &lpsr);
regmap_write(data->regmap, data->offset + SNVS_LPSR, lpsr);
regmap_write(data->regmap, data->offset + SNVS_LPSR, 0xffffffff);