1STMicroelectronics STPMIC1 Voltage regulators 2 3Regulator Nodes are optional depending on needs. 4 5Available Regulators in STPMIC1 device are: 6 - buck1 for Buck BUCK1 7 - buck2 for Buck BUCK2 8 - buck3 for Buck BUCK3 9 - buck4 for Buck BUCK4 10 - ldo1 for LDO LDO1 11 - ldo2 for LDO LDO2 12 - ldo3 for LDO LDO3 13 - ldo4 for LDO LDO4 14 - ldo5 for LDO LDO5 15 - ldo6 for LDO LDO6 16 - vref_ddr for LDO Vref DDR 17 - boost for Buck BOOST 18 - pwr_sw1 for VBUS_OTG switch 19 - pwr_sw2 for SW_OUT switch 20 21Switches are fixed voltage regulators with only enable/disable capability. 22 23Optional properties: 24- st,mask-reset: mask reset for this regulator: the regulator configuration 25 is maintained during pmic reset. 26- regulator-over-current-protection: 27 if set, all regulators are switched off in case of over-current detection 28 on this regulator, 29 if not set, the driver only sends an over-current event. 30- interrupts: index of current limit detection interrupt 31- <regulator>-supply: phandle to the parent supply/regulator node 32 each regulator supply can be described except vref_ddr. 33- regulator-active-discharge: can be used on pwr_sw1 and pwr_sw2. 34 35Example: 36regulators { 37 compatible = "st,stpmic1-regulators"; 38 39 ldo6-supply = <&v3v3>; 40 41 vdd_core: buck1 { 42 regulator-name = "vdd_core"; 43 interrupts = <IT_CURLIM_BUCK1 0>; 44 st,mask-reset; 45 regulator-pull-down; 46 regulator-min-microvolt = <700000>; 47 regulator-max-microvolt = <1200000>; 48 }; 49 50 v3v3: buck4 { 51 regulator-name = "v3v3"; 52 interrupts = <IT_CURLIM_BUCK4 0>; 53 54 regulator-min-microvolt = <3300000>; 55 regulator-max-microvolt = <3300000>; 56 }; 57 58 v1v8: ldo6 { 59 regulator-name = "v1v8"; 60 regulator-min-microvolt = <1800000>; 61 regulator-max-microvolt = <1800000>; 62 regulator-over-current-protection; 63 }; 64}; 65