regulator: rt6190: Add support for Richtek RT6190 regulator

Add support for Richtek RT6190 4-Switch BuckBoost controller.
Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/1667183334-16511-3-git-send-email-u0084500@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/Kconfig

@@ -1124,6 +1124,17 @@ config REGULATOR_RT6160
 	  The wide output range is from 2025mV to 5200mV and can be used on most
 	  common application scenario.
 
+config REGULATOR_RT6190
+	tristate "Richtek RT6190 4-Switch BuckBoost controller"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  The RT6190 is a 4-Switch BuckBoost controller designed for converting
+	  input voltage to output voltage that can be equal to, higher or lower
+	  than input voltage. It operates with wide input voltage range from
+	  4.5V to 36V, and the output voltage can be set from 3V to 36V by
+	  external FB pin.
+
 config REGULATOR_RT6245
 	tristate "Richtek RT6245 voltage regulator"
 	depends on I2C

drivers/regulator/Makefile

@@ -134,6 +134,7 @@ obj-$(CONFIG_REGULATOR_RT5120)	+= rt5120-regulator.o
 obj-$(CONFIG_REGULATOR_RT5190A) += rt5190a-regulator.o
 obj-$(CONFIG_REGULATOR_RT5759)	+= rt5759-regulator.o
 obj-$(CONFIG_REGULATOR_RT6160)	+= rt6160-regulator.o
+obj-$(CONFIG_REGULATOR_RT6190)	+= rt6190-regulator.o
 obj-$(CONFIG_REGULATOR_RT6245)	+= rt6245-regulator.o
 obj-$(CONFIG_REGULATOR_RTMV20)	+= rtmv20-regulator.o
 obj-$(CONFIG_REGULATOR_RTQ2134) += rtq2134-regulator.o