1af41e8dbSPrzemyslaw MarczakVoltage/Current regulator 2af41e8dbSPrzemyslaw Marczak 3af41e8dbSPrzemyslaw MarczakBinding: 4af41e8dbSPrzemyslaw MarczakThe regulator devices don't use the "compatible" property. The binding is done 5af41e8dbSPrzemyslaw Marczakby the prefix of regulator node's name. Usually the pmic I/O driver will provide 6af41e8dbSPrzemyslaw Marczakthe array of 'struct pmic_child_info' with the prefixes and compatible drivers. 7af41e8dbSPrzemyslaw MarczakThe bind is done by calling function: pmic_bind_childs(). 8af41e8dbSPrzemyslaw MarczakExample drivers: 9af41e8dbSPrzemyslaw Marczakpmic: drivers/power/pmic/max77686.c 10af41e8dbSPrzemyslaw Marczakregulator: drivers/power/regulator/max77686.c 11af41e8dbSPrzemyslaw Marczak 12af41e8dbSPrzemyslaw MarczakFor the node name e.g.: "prefix[:alpha:]num { ... }": 13*bd2259e3SFelix Brack- the driver prefix should be: "prefix" - case sensitive 14af41e8dbSPrzemyslaw Marczak- the node name's "num" is set as "dev->driver_data" on bind 15af41e8dbSPrzemyslaw Marczak 16*bd2259e3SFelix BrackExample the prefix "ldo" will pass for: "ldo1", "ldo@1", "ldoreg@1, ... 17af41e8dbSPrzemyslaw Marczak 18af41e8dbSPrzemyslaw MarczakOptional properties: 1940ade2ceSPeng Fan- regulator-name: a string, required by the regulator uclass 20af41e8dbSPrzemyslaw Marczak- regulator-min-microvolt: a minimum allowed Voltage value 21af41e8dbSPrzemyslaw Marczak- regulator-max-microvolt: a maximum allowed Voltage value 22af41e8dbSPrzemyslaw Marczak- regulator-min-microamp: a minimum allowed Current value 23af41e8dbSPrzemyslaw Marczak- regulator-max-microamp: a maximum allowed Current value 24af41e8dbSPrzemyslaw Marczak- regulator-always-on: regulator should never be disabled 25af41e8dbSPrzemyslaw Marczak- regulator-boot-on: enabled by bootloader/firmware 26af41e8dbSPrzemyslaw Marczak 2740ade2ceSPeng FanNote 2840ade2ceSPeng FanThe "regulator-name" constraint is used for setting the device's uclass 2940ade2ceSPeng Fanplatform data '.name' field. And the regulator device name is set from 3040ade2ceSPeng Fanit's node name. If "regulator-name" is not provided in dts, node name 3140ade2ceSPeng Fanis chosen for setting the device's uclass platform data '.name' field. 3240ade2ceSPeng Fan 33af41e8dbSPrzemyslaw MarczakOther kernel-style properties, are currently not used. 34af41e8dbSPrzemyslaw Marczak 35af41e8dbSPrzemyslaw MarczakNote: 36af41e8dbSPrzemyslaw MarczakFor the regulator autoset from constraints, the framework expects that: 37af41e8dbSPrzemyslaw Marczak- regulator-min-microvolt is equal to regulator-max-microvolt 38af41e8dbSPrzemyslaw Marczak- regulator-min-microamp is equal to regulator-max-microamp 39af41e8dbSPrzemyslaw Marczak- regulator-always-on or regulator-boot-on is set 40af41e8dbSPrzemyslaw Marczak 41af41e8dbSPrzemyslaw MarczakExample: 42af41e8dbSPrzemyslaw Marczakldo0 { 43af41e8dbSPrzemyslaw Marczak /* Optional */ 4440ade2ceSPeng Fan regulator-name = "VDDQ_EMMC_1.8V"; 45af41e8dbSPrzemyslaw Marczak regulator-min-microvolt = <1800000>; 46af41e8dbSPrzemyslaw Marczak regulator-max-microvolt = <1800000>; 47af41e8dbSPrzemyslaw Marczak regulator-min-microamp = <100000>; 48af41e8dbSPrzemyslaw Marczak regulator-max-microamp = <100000>; 49af41e8dbSPrzemyslaw Marczak regulator-always-on; 50af41e8dbSPrzemyslaw Marczak regulator-boot-on; 51af41e8dbSPrzemyslaw Marczak}; 52