1*5149b685SErick ChenSpreadtrum SC2731 Voltage regulators 2*5149b685SErick Chen 3*5149b685SErick ChenThe SC2731 integrates low-voltage and low quiescent current DCDC/LDO. 4*5149b685SErick Chen14 LDO and 3 DCDCs are designed for external use. All DCDCs/LDOs have 5*5149b685SErick Chentheir own bypass (power-down) control signals. External tantalum or MLCC 6*5149b685SErick Chenceramic capacitors are recommended to use with these LDOs. 7*5149b685SErick Chen 8*5149b685SErick ChenRequired properties: 9*5149b685SErick Chen - compatible: should be "sprd,sc27xx-regulator". 10*5149b685SErick Chen 11*5149b685SErick ChenList of regulators provided by this controller. It is named according to 12*5149b685SErick Chenits regulator type, BUCK_<name> and LDO_<name>. The definition for each 13*5149b685SErick Chenof these nodes is defined using the standard binding for regulators at 14*5149b685SErick ChenDocumentation/devicetree/bindings/regulator/regulator.txt. 15*5149b685SErick Chen 16*5149b685SErick ChenThe valid names for regulators are: 17*5149b685SErick ChenBUCK: 18*5149b685SErick Chen BUCK_CPU0, BUCK_CPU1, BUCK_RF 19*5149b685SErick ChenLDO: 20*5149b685SErick Chen LDO_CAMA0, LDO_CAMA1, LDO_CAMMOT, LDO_VLDO, LDO_EMMCCORE, LDO_SDCORE, 21*5149b685SErick Chen LDO_SDIO, LDO_WIFIPA, LDO_USB33, LDO_CAMD0, LDO_CAMD1, LDO_CON, 22*5149b685SErick Chen LDO_CAMIO, LDO_SRAM 23*5149b685SErick Chen 24*5149b685SErick ChenExample: 25*5149b685SErick Chen regulators { 26*5149b685SErick Chen compatible = "sprd,sc27xx-regulator"; 27*5149b685SErick Chen 28*5149b685SErick Chen vddarm0: BUCK_CPU0 { 29*5149b685SErick Chen regulator-name = "vddarm0"; 30*5149b685SErick Chen regulator-min-microvolt = <400000>; 31*5149b685SErick Chen regulator-max-microvolt = <1996875>; 32*5149b685SErick Chen regulator-ramp-delay = <25000>; 33*5149b685SErick Chen regulator-always-on; 34*5149b685SErick Chen }; 35*5149b685SErick Chen 36*5149b685SErick Chen vddcama0: LDO_CAMA0 { 37*5149b685SErick Chen regulator-name = "vddcama0"; 38*5149b685SErick Chen regulator-min-microvolt = <1200000>; 39*5149b685SErick Chen regulator-max-microvolt = <3750000>; 40*5149b685SErick Chen regulator-enable-ramp-delay = <100>; 41*5149b685SErick Chen }; 42*5149b685SErick Chen ... 43*5149b685SErick Chen }; 44