83  * @booster:		booster supply reference
100 	struct regulator		*booster;  member
423 	 * - Voltage booster can be used, to get full ADC performances  in stm32_adc_core_switches_supply_en()
453 		if (priv->booster) {  in stm32_adc_core_switches_supply_en()
458 			ret = regulator_enable(priv->booster);  in stm32_adc_core_switches_supply_en()
460 				dev_err(dev, "booster enable failed %d\n", ret);  in stm32_adc_core_switches_supply_en()
463 			dev_dbg(dev, "analog switches supplied by booster\n");  in stm32_adc_core_switches_supply_en()
485 		if (priv->booster)  in stm32_adc_core_switches_supply_dis()
486 			regulator_disable(priv->booster);  in stm32_adc_core_switches_supply_dis()
584 	/* Booster can be used to supply analog switches (optional) */  in stm32_adc_core_switches_probe()
586 	    of_property_read_bool(np, "booster-supply")) {  in stm32_adc_core_switches_probe()
587 		priv->booster = devm_regulator_get_optional(dev, "booster");  in stm32_adc_core_switches_probe()
588 		if (IS_ERR(priv->booster)) {  in stm32_adc_core_switches_probe()
589 			ret = PTR_ERR(priv->booster);  in stm32_adc_core_switches_probe()
591 				return dev_err_probe(dev, ret, "can't get booster\n");  in stm32_adc_core_switches_probe()
593 			priv->booster = NULL;  in stm32_adc_core_switches_probe()