regulator: max77857: Add ADI MAX77857/59/MAX77831 Regulator Support

Regulator driver for  MAX77857/59 and MAX77831.
The MAX77857 is a high-efficiency, high-performance
buck-boost converter targeted for systems requiring
a wide input voltage range (2.5V to 16V).

The MAX77859 is high-Efficiency Buck-Boost Converter
for USB-PD/PPS Applications. It has wide input range
(2.5V to 22V)

The MAX77831 is a high-efficiency, high-performance
buck-boost converter targeted for systems requiring
wide input voltage range (2.5V to 16V).
Signed-off-by: Okan Sahin <okan.sahin@analog.com>
Link: https://lore.kernel.org/r/20230717050736.10075-3-okan.sahin@analog.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/Kconfig

@@ -584,6 +584,16 @@ config REGULATOR_MAX77650
 	  Semiconductor. This device has a SIMO with three independent
 	  power rails and an LDO.
 
+config REGULATOR_MAX77857
+	tristate "ADI MAX77857/MAX77831 regulator support"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  This driver controls a ADI MAX77857 and MAX77831 regulators.
+	  via I2C bus. MAX77857 and MAX77831 are high efficiency buck-boost
+	  converters with input voltage range (2.5V to 16V). Say Y here to
+	  enable the regulator driver
+
 config REGULATOR_MAX8649
 	tristate "Maxim 8649 voltage regulator"
 	depends on I2C

drivers/regulator/Makefile

@@ -86,6 +86,7 @@ obj-$(CONFIG_REGULATOR_MAX77686) += max77686-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77693) += max77693-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77802) += max77802-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77826) += max77826-regulator.o
+obj-$(CONFIG_REGULATOR_MAX77857) += max77857-regulator.o
 obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
 obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
 obj-$(CONFIG_REGULATOR_MC13XXX_CORE) +=  mc13xxx-regulator-core.o