regulator: max77675: Add MAX77675 regulator driver

Add support for the Maxim Integrated MAX77675 PMIC regulator.

The MAX77675 is a compact, highly efficient SIMO (Single Inductor Multiple Output)
power management IC that provides four programmable buck-boost switching regulators
with only one inductor. It supports up to 700mA total output current and operates
from a single-cell Li-ion battery.

An integrated power-up sequencer and I2C interface allow flexible startup
configuration and runtime control.

Signed-off-by: Joan Na <joan.na@analog.com>
Link: https://patch.msgid.link/20251207032907.4850-3-joan.na@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: joan-na-good

drivers/regulator/Kconfig

@@ -659,6 +659,15 @@ config REGULATOR_MAX77650
 	  Semiconductor. This device has a SIMO with three independent
 	  power rails and an LDO.
 
+config REGULATOR_MAX77675
+	tristate "Maxim MAX77675 regulator driver"
+	depends on I2C && OF
+	select REGMAP_I2C
+	help
+	  This driver controls the Maxim MAX77675 power regulator via I2C.
+	  It supports four programmable buck-boost outputs.
+	  Say Y here to enable the regulator driver
+
 config REGULATOR_MAX77857
 	tristate "ADI MAX77857/MAX77831 regulator support"
 	depends on I2C

drivers/regulator/Makefile

@@ -79,6 +79,7 @@ obj-$(CONFIG_REGULATOR_MAX77503) += max77503-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77541) += max77541-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77620) += max77620-regulator.o
 obj-$(CONFIG_REGULATOR_MAX77650) += max77650-regulator.o
+obj-$(CONFIG_REGULATOR_MAX77675) += max77675-regulator.o
 obj-$(CONFIG_REGULATOR_MAX8649)	+= max8649.o
 obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o
 obj-$(CONFIG_REGULATOR_MAX8893) += max8893.o