SN_AUX_CMD_REG
regmap_write(pdata->regmap, SN_AUX_CMD_REG, request_val);
regmap_write(pdata->regmap, SN_AUX_CMD_REG, request_val | AUX_CMD_SEND);
ret = regmap_read_poll_timeout(pdata->regmap, SN_AUX_CMD_REG, val,