mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-11 22:03:15 +00:00
40ade2ce58
We do not need that "regulator-name" property must be provided in dts. If "regulator-name" property is not provided in dts, node name will chosen for settings '.name' field of uc_pdata. Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Cc: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Simon Glass <sjg@chromium.org>
51 lines
1.9 KiB
Text
51 lines
1.9 KiB
Text
Voltage/Current regulator
|
|
|
|
Binding:
|
|
The regulator devices don't use the "compatible" property. The binding is done
|
|
by the prefix of regulator node's name. Usually the pmic I/O driver will provide
|
|
the array of 'struct pmic_child_info' with the prefixes and compatible drivers.
|
|
The bind is done by calling function: pmic_bind_childs().
|
|
Example drivers:
|
|
pmic: drivers/power/pmic/max77686.c
|
|
regulator: drivers/power/regulator/max77686.c
|
|
|
|
For the node name e.g.: "prefix[:alpha:]num { ... }":
|
|
- the driver prefix should be: "prefix" or "PREFIX" - case insensitive
|
|
- the node name's "num" is set as "dev->driver_data" on bind
|
|
|
|
Example the prefix "ldo" will pass for: "ldo1", "ldo@1", "LDO1", "LDOREG@1"...
|
|
|
|
Optional properties:
|
|
- regulator-name: a string, required by the regulator uclass
|
|
- regulator-min-microvolt: a minimum allowed Voltage value
|
|
- regulator-max-microvolt: a maximum allowed Voltage value
|
|
- regulator-min-microamp: a minimum allowed Current value
|
|
- regulator-max-microamp: a maximum allowed Current value
|
|
- regulator-always-on: regulator should never be disabled
|
|
- regulator-boot-on: enabled by bootloader/firmware
|
|
|
|
Note
|
|
The "regulator-name" constraint is used for setting the device's uclass
|
|
platform data '.name' field. And the regulator device name is set from
|
|
it's node name. If "regulator-name" is not provided in dts, node name
|
|
is chosen for setting the device's uclass platform data '.name' field.
|
|
|
|
Other kernel-style properties, are currently not used.
|
|
|
|
Note:
|
|
For the regulator autoset from constraints, the framework expects that:
|
|
- regulator-min-microvolt is equal to regulator-max-microvolt
|
|
- regulator-min-microamp is equal to regulator-max-microamp
|
|
- regulator-always-on or regulator-boot-on is set
|
|
|
|
Example:
|
|
ldo0 {
|
|
/* Optional */
|
|
regulator-name = "VDDQ_EMMC_1.8V";
|
|
regulator-min-microvolt = <1800000>;
|
|
regulator-max-microvolt = <1800000>;
|
|
regulator-min-microamp = <100000>;
|
|
regulator-max-microamp = <100000>;
|
|
regulator-always-on;
|
|
regulator-boot-on;
|
|
};
|