power: add FAN53555 family support
This adds a driver for the FAN53555 family of regulators and wraps it
in a PMIC implementation.
While these devices support a 'normal' and 'suspend' mode (controlled
via an external pin) to switch between two programmable voltages, this
incarnation of the driver assumes that the device is always operating
in 'normal' mode.
Only setting/reading the programmed voltage is supported at this time
and the following device functionality remains unsupported:
- switching the selected voltage (via a GPIO)
- disabling the voltage output via software-control
This matches the functionality of the Linux driver.
Tested on a RK3399-Q7 (with 'option 5' devices): setting voltages from
the U-Boot shell and verifying output voltages on the board.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index cba48e1..8cf60eb 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -48,6 +48,20 @@
interface and is designs to cover most of the power managementment
required for a tablets or laptop.
+config DM_PMIC_FAN53555
+ bool "Enable support for OnSemi FAN53555"
+ depends on DM_PMIC && DM_REGULATOR && DM_I2C
+ select DM_REGULATOR_FAN53555
+ help
+ This config enables implementation of driver-model PMIC
+ uclass features for the FAN53555 regulator. The FAN53555 is
+ a (family of) single-output regulators that supports
+ transitioning between two different output voltages based on
+ an voltage selection pin.
+
+ The driver implements read/write operations for use with the FAN53555
+ regulator driver and binds the regulator driver to its node.
+
config DM_PMIC_PFUZE100
bool "Enable Driver Model for PMIC PFUZE100"
depends on DM_PMIC