device-tree-bindings/regulator/regulator.txt

1 Voltage/Current regulator
4 The regulator devices don't use the "compatible" property. The binding is done
5 by the prefix of regulator node's name, or, if this fails, by the prefix of the
6 regulator's "regulator-name" property. Usually the pmic I/O driver will provide
11 regulator: drivers/power/regulator/max77686.c
14 - the driver prefix should be: "prefix" - case sensitive
15 - the node name's "num" is set as "dev->driver_data" on bind
20 would produce ambiguous prefixes (like "regulator@1" and "regualtor@11") and you
21 can't or do not want to change them then binding against the "regulator-name"
22 property is possible. The syntax for the prefix of the "regulator-name" property
23 is the same as the one for the regulator's node name.
24 Use case: a regulator named "regulator@1" to be bound to a driver named
25 "LDO_DRV" and a regulator named "regualator@11" to be bound to an other driver
30 - regulator-name: a string, required by the regulator uclass, used for driver
32 - regulator-min-microvolt: a minimum allowed Voltage value
33 - regulator-max-microvolt: a maximum allowed Voltage value
34 - regulator-min-microamp: a minimum allowed Current value
35 - regulator-max-microamp: a maximum allowed Current value
36 - regulator-always-on: regulator should never be disabled
37 - regulator-boot-on: enabled by bootloader/firmware
38 - regulator-ramp-delay: ramp delay for regulator (in uV/us)
41 The "regulator-name" constraint is used for setting the device's uclass
42 platform data '.name' field. And the regulator device name is set from
43 it's node name. If "regulator-name" is not provided in dts, node name
46 Other kernel-style properties, are currently not used.
49 For the regulator autoset from constraints, the framework expects that:
50 - regulator-min-microvolt is equal to regulator-max-microvolt
51 - regulator-min-microamp is equal to regulator-max-microamp
52 - regulator-always-on or regulator-boot-on is set
57 	regulator-name = "VDDQ_EMMC_1.8V";
58 	regulator-min-microvolt = <1800000>;
59 	regulator-max-microvolt = <1800000>;
60 	regulator-min-microamp = <100000>;
61 	regulator-max-microamp = <100000>;
62 	regulator-always-on;
63 	regulator-boot-on;
64 	regulator-ramp-delay = <12000>;