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menuconfig RT_USING_REGULATOR
bool "Using Voltage and Current Regulator"
select RT_USING_ADT
select RT_USING_ADT_REF
depends on RT_USING_DM
default n
help
Enable the regulator framework so power supplies described in the device
tree can be registered, referenced, and controlled at runtime. With this
selected, drivers may obtain regulators via `rt_regulator_get()`, request
enable/disable, or vote for specific voltage/current levels before their
peripherals start. The framework depends on the driver-model and ADT
parser because it walks the same device tree phandles. Disable it only
when the SoC has no controllable supplies and every peripheral is powered
permanently.
config RT_REGULATOR_FIXED
bool "Fixed regulator support"
depends on RT_USING_REGULATOR
depends on RT_USING_PIN
depends on RT_USING_PINCTRL
default y
help
Provide the "fixed" regulator type in which the output voltage is defined
entirely by the hardware (for example a PMIC LDO) and RT-Thread can only
toggle an optional GPIO enable pin. The driver parses standard device tree
properties such as `startup-delay-us`, `off-on-delay-us`, `enable-active-
high`, and also applies any pinctrl state before asserting the output.
Select this when the board DTS contains `regulator-fixed` nodes; it is
safe to leave enabled because it only instantiates devices that the DT
describes.
config RT_REGULATOR_GPIO
bool "GPIO regulator support"
depends on RT_USING_REGULATOR
depends on RT_USING_PIN
default y
help
Allow the framework to emulate simple DAC-like regulators using GPIO banks
where each output bit selects a discrete voltage/current point. The
driver reads the `states` table from the device tree and programs the GPIO
pins accordingly, so peripheral drivers can call `set_voltage()` and let
the framework choose the closest valid entry. Enable this when your board
uses GPIO strapping to select regulator levels (common with analog muxes)
or PMIC power modes; otherwise it adds no runtime cost.
config RT_REGULATOR_SCMI
bool "SCMI regulator support"
depends on RT_USING_REGULATOR
depends on RT_USING_OFW
depends on RT_FIRMWARE_ARM_SCMI
default n
if RT_USING_REGULATOR
osource "$(SOC_DM_REGULATOR_DIR)/Kconfig"
endif
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