Commit 87ca186f authored by Guodong Xu's avatar Guodong Xu Committed by Mark Brown
Browse files

regulator: add driver for hi6421 voltage regulator 



Add driver support for HiSilicon Hi6421 voltage regulators.

Two rules for regulator enabling are defined in hi6421 spec:
1) Between disable and enable of each regulator (LDOs or BUCKs), there must
   be a protection gap. Use @off_on_delay of regulator core to implement this.
2) No two regulators can be enabled at the same time. Use mutex in
   hi6421_regulator_pdata to ensure this. A protection gap of 100us is added
   into each LDO/BUCK's .enable_time.

Signed-off-by: default avatarGuodong Xu <guodong.xu@linaro.org>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 871f5650

drivers/regulator/Kconfig

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Original line number Diff line number Diff line
@@ -240,6 +240,16 @@ config REGULATOR_GPIO 
	  and the platform has to provide a mapping of GPIO-states

	  to target volts/amps.



config REGULATOR_HI6421

	tristate "HiSilicon Hi6421 PMIC voltage regulator support"

	depends on MFD_HI6421_PMIC && OF

	help

	  This driver provides support for the voltage regulators on the

	  HiSilicon Hi6421 PMU / Codec IC.

	  Hi6421 is a multi-function device which, on regulator part, provides

	  21 general purpose LDOs, 3 dedicated LDOs, and 5 BUCKs. All

	  of them come with support to either ECO (idle) or sleep mode.



config REGULATOR_ISL6271A

	tristate "Intersil ISL6271A Power regulator"

	depends on I2C

drivers/regulator/Makefile

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Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ obj-$(CONFIG_REGULATOR_DBX500_PRCMU) += dbx500-prcmu.o 
obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o

obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o

obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o

obj-$(CONFIG_REGULATOR_HI6421) += hi6421-regulator.o

obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o

obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o

obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o

drivers/regulator/hi6421-regulator.c

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