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path: root/drivers/regulator/Kconfig
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2014-08-05Merge remote-tracking branches 'regulator/topic/s2mps11', ↵Mark Brown
'regulator/topic/s2mpu02', 'regulator/topic/s5m8767' and 'regulator/topic/tps65090' into regulator-next
2014-07-25regulator: s2mps11: Update module description and Kconfig to add S2MPU02 supportAxel Lin
This driver also supports S2MPU02 now, thus update module description and Kconfig accordingly. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-14regulator: da9211: new regulator driverJames Ban
This is the driver for the Dialog DA9211 Multi-phase 12A DC-DC Buck Converter regulator. It communicates via an I2C bus to the device. Signed-off-by: James Ban <james.ban.opensource@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-03Merge tag 'regulator-v3.16' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into next Pull regulator updates from Mark Brown: "The bulk of the changes for this release are a few new drivers however there are a couple of noticable core changes and the usual stream of cleanups and fixes: - move disable of unused regulators later in init so it comes after deferred probe has iterated making startup smoother. - fixes to reference counting of the DT nodes for constraints from Charles Keepax. This has little practical impact since all real users of the regulator bindings use FDT which doesn't need the reference counting. - lots of cleanups, especially to the Samsung drivers. - support for Linear Technologies LTC3589, Texas Instruments TPS658640 and X-Powers AXP20x" * tag 'regulator-v3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (64 commits) regulator: pbias: remove unnecessary OOM messages regulator: max8649: remove unnecessary OOM messages regulator: core: Fix the init of DT defined fixed regulators regulator: core: Disable unused regulators after deferred probing is done regulator: Don't disable unused regulators we don't have permission for regulator: axp20x: Use regulator_map_voltage_ascend for LDO4 regulator: use of_property_read_{bool|u32}() regulator: Fix regulator_get_{optional,exclusive}() documentation regulators: Add definition of regulator_set_voltage_time() for !CONFIG_REGULATOR regulator: arizona-ldo1: add missing #include regulator: pfuze100: Support enable/disable for fixed regulator regulator: ltc3589: Remove ltc3589_list_voltage_fixed function regulator: ltc3589: Fix module dependency regulator: tps6586x: Remove unused to_tps6586x_dev() function regulator: tps65218: Convert to use regulator_set_voltage_time_sel regulator: tps6586x: Add support for the TPS658640 regulator: tps6586x: Prepare supporting fixed regulators regulator: pfuze100: Don't allocate an invalid gpio regulator: pfuze100: Support SWB enable/disable regulator: fixed: use of_property_read_{bool|u32}() ...
2014-06-02Merge remote-tracking branches 'regulator/topic/fixed', ↵Mark Brown
'regulator/topic/id-const', 'regulator/topic/ltc3589', 'regulator/topic/max8649' and 'regulator/topic/of' into regulator-next
2014-05-27regulator: ltc3589: Fix module dependencyAxel Lin
Make this driver depend on I2C and select REGMAP_I2C to fix build failure. Also allows this driver to be built as module. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-26regulator: Add LTC3589 supportPhilipp Zabel
This patch adds support for the Linear Technology LTC3589, LTC3589-1, and LTC3589-2 8-output I2C voltage regulator ICs. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-23regulator: max14577: Add support for MAX77836 regulatorsKrzysztof Kozlowski
Add support for MAX77836 chipset and its additional two LDO regulators. These LDO regulators are controlled by the PMIC block with additional regmap (different I2C slave address). The MAX77836 charger and safeout regulators are almost identical to MAX14577. The registers layout is the same, except values for charger's current. The patch adds simple mapping between device type and supported current by the charger regulator. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Reviewed-by: Mark Brown <broonie@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-04-14regulator: AXP20x: Add support for regulators subsystemCarlo Caione
AXP202 and AXP209 come with two synchronous step-down DC-DCs and five LDOs. This patch introduces basic support for those regulators. Signed-off-by: Carlo Caione <carlo@caione.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-04-09Merge tag 'mmc-updates-for-3.15-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc Pull MMC updates from Chris Ball: "MMC highlights for 3.15: Core: - CONFIG_MMC_UNSAFE_RESUME=y is now default behavior - DT bindings for SDHCI UHS, eMMC HS200, high-speed DDR, at 1.8/1.2V - Add GPIO descriptor based slot-gpio card detect API Drivers: - dw_mmc: Refactor SOCFPGA support as a variant inside dw_mmc-pltfm.c - mmci: Support HW busy detection on ux500 - omap: Support MMC_ERASE - omap_hsmmc: Support MMC_PM_KEEP_POWER, MMC_PM_WAKE_SDIO_IRQ, (a)cmd23 - rtsx: Support pre-req/post-req async - sdhci: Add support for Realtek RTS5250 controllers - sdhci-acpi: Add support for 80860F16, fix 80860F14/SDIO card detect - sdhci-msm: Add new driver for Qualcomm SDHCI chipset support - sdhci-pxav3: Add support for Marvell Armada 380 and 385 SoCs" * tag 'mmc-updates-for-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (102 commits) mmc: sdhci-acpi: Intel SDIO has broken card detect mmc: sdhci-pxav3: add support for the Armada 38x SDHCI controller mmc: sdhci-msm: Add platform_execute_tuning implementation mmc: sdhci-msm: Initial support for Qualcomm chipsets mmc: sdhci-msm: Qualcomm SDHCI binding documentation sdhci: only reprogram retuning timer when flag is set mmc: rename ARCH_BCM to ARCH_BCM_MOBILE mmc: sdhci: Allow for irq being shared mmc: sdhci-acpi: Add device id 80860F16 mmc: sdhci-acpi: Fix broken card detect for ACPI HID 80860F14 mmc: slot-gpio: Add GPIO descriptor based CD GPIO API mmc: slot-gpio: Split out CD IRQ request into a separate function mmc: slot-gpio: Record GPIO descriptors instead of GPIO numbers Revert "dts: socfpga: Add support for SD/MMC on the SOCFPGA platform" mmc: sdhci-spear: use generic card detection gpio support mmc: sdhci-spear: remove support for power gpio mmc: sdhci-spear: simplify resource handling mmc: sdhci-spear: fix platform_data usage mmc: sdhci-spear: fix error handling paths for DT mmc: sdhci-bcm-kona: fix build errors when built-in ...
2014-03-26Merge remote-tracking branches 'regulator/topic/tps65218', ↵Mark Brown
'regulator/topic/tps6524x', 'regulator/topic/tps6586x', 'regulator/topic/tps65910', 'regulator/topic/tps80031', 'regulator/topic/wm831x', 'regulator/topic/wm8350' and 'regulator/topic/wm8994' into regulator-next
2014-03-26Merge remote-tracking branches 'regulator/topic/s5m8767', ↵Mark Brown
'regulator/topic/st-pwm', 'regulator/topic/ti-abb', 'regulator/topic/tps51632', 'regulator/topic/tps62360', 'regulator/topic/tps6507x', 'regulator/topic/tps65090' and 'regulator/topic/tps65217' into regulator-next
2014-03-26Merge remote-tracking branches 'regulator/topic/max8973', ↵Mark Brown
'regulator/topic/max8997', 'regulator/topic/max8998', 'regulator/topic/mc13xxx', 'regulator/topic/pfuze100', 'regulator/topic/rc5t583' and 'regulator/topic/s2mps11' into regulator-next
2014-03-21regulator: Add new driver for ST's PWM controlled voltage regulatorsLee Jones
On some STMicroelectronics hardware reside regulators consisting partly of a PWM input connected to the feedback loop. As the PWM duty-cycle is varied the output voltage adapts. This driver allows us to vary the output voltage by adapting the PWM input duty-cycle. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-19regulator: s2mps11: Add support for S2MPS14 regulatorsKrzysztof Kozlowski
Add support for S2MPS14 PMIC regulators to s2mps11 driver. The S2MPS14 has fewer BUCK-s and LDO-s than S2MPS11. It also does not support controlling the BUCK ramp delay. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Cc: Mark Brown <broonie@kernel.org> Cc: Liam Girdwood <lgirdwood@gmail.com> Reviewed-by: Yadwinder Singh Brar <yadi.brar@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-18regulator: Add support for S2MPA01 regulatorSachin Kamat
Add support for S2MPA01 voltage and current regulator. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Mark Brown <broonie@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-11regulator: add bcm590xx regulator driverMatt Porter
Add a regulator driver for the BCM590xx PMU voltage regulators. The driver supports LDOs and DCDCs in normal mode only. There is no support for low-power mode or power sequencing. Signed-off-by: Matt Porter <mporter@linaro.org> Reviewed-by: Tim Kryger <tim.kryger@linaro.org> Reviewed-by: Markus Mayer <markus.mayer@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-06regulator: pfuze100: Add PFUZE200 support to Kconfig and module descriptionAxel Lin
Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Robin Gong <b38343@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-03-04regulator: add pbias regulator supportBalaji T K
pbias register controls internal power supply to sd card i/o pads in most OMAPs (OMAP2-5, DRA7). Control bits for selecting voltage level and enabling/disabling are in the same PBIAS register. Signed-off-by: Balaji T K <balajitk@ti.com> Acked-by: Tony Lindgren <tony@atomide.com> Acked-by: Mark Brown <broonie@linaro.org> Tested-by: Florian Vaussard <florian.vaussard@epfl.ch> Tested-by: Stefan Roese <sr@denx.de> Signed-off-by: Chris Ball <chris@printf.net>
2014-02-19regulator: tps65218: Add OF dependencyAxel Lin
This is a DT-only driver, so make it depend on OF and remove of_match_ptr in the code. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-02-14regulator: tps65218: Add Regulator driver for TPS65218 PMICKeerthy
This patch adds support for TPS65218 PMIC regulators. The regulators set consists of 6 DCDCs and 1 LDO. The output voltages are configurable and are meant to supply power to the main processor and other components. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-01-25Merge tag 'regulator-v3.14-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator updates from Mark Brown: "A respin of the merges in the previous pull request with one extra fix. A quiet release for the regulator API, quite a large number of small improvements all over but other than the addition of new drivers for the AS3722 and MAX14577 there is nothing of substantial non-local impact" * tag 'regulator-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (47 commits) regulator: pfuze100-regulator: Improve dev_info() message regulator: pfuze100-regulator: Fix some checkpatch complaints regulator: twl: Fix checkpatch issue regulator: core: Fix checkpatch issue regulator: anatop-regulator: Remove unneeded memset() regulator: s5m8767: Update LDO index in s5m8767-regulator.txt regulator: as3722: set enable time for SD0/1/6 regulator: as3722: detect SD0 low-voltage mode regulator: tps62360: Fix up a pointer-integer size mismatch warning regulator: anatop-regulator: Remove unneeded kstrdup() regulator: act8865: Fix build error when !OF regulator: act8865: register all regulators regardless of how many are used regulator: wm831x-dcdc: Remove unneeded 'err' label regulator: anatop-regulator: Add MODULE_ALIAS() regulator: act8865: fix incorrect devm_kzalloc for act8865 regulator: act8865: Remove set_suspend_[en|dis]able implementation regulator: act8865: Remove unneeded regulator_unregister() calls regulator: s2mps11: Clean up redundant code regulator: tps65910: Simplify setting enable_mask for regulators regulator: act8865: add device tree binding doc ...
2014-01-23Merge remote-tracking branches 'regulator/topic/db8500', ↵Mark Brown
'regulator/topic/gpio', 'regulator/topic/lp3971', 'regulator/topic/lp3972', 'regulator/topic/max14577', 'regulator/topic/max77693', 'regulator/topic/mc13892', 'regulator/topic/pcf50633' and 'regulator/topic/pfuze100' into regulator-linus
2014-01-21mfd: mc13xxx: Remove useless symbol MFD_MC13783Alexander Shiyan
Symbol MFD_MC13783 always selected by MFD_MC13XXX, so no need to keep additional symbol. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2013-12-24regulator: act8865: add PMIC act8865 driverWenyou Yang
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-24regulator: pfuze100: Improve PFUZE100 entry textFabio Estevam
Make PFUZE100 entry consistent with other Freescale PMIC entries, so that now we can have: <*> Freescale MC13783 regulator driver <*> Freescale MC13892 regulator driver <*> Freescale PFUZE100 regulator driver Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Acked-by: Robin Gong <yibin.gong@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-12-18regulator: max14577: Add regulator driver for Maxim 14577Krzysztof Kozlowski
MAX14577 chip is a multi-function device which includes MUIC, charger and voltage regulator. The driver is located in drivers/mfd. This patch adds regulator driver for MAX14577 chip. There are two regulators in this chip: 1. Safeout LDO with constant voltage output of 4.9V. It can be only enabled or disabled. 2. Current regulator for the charger. It provides current from 90mA up to 950mA. Driver supports Device Tree. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-24Merge remote-tracking branch 'regulator/topic/stw481x' into regulator-nextMark Brown
2013-10-24Merge remote-tracking branch 'regulator/topic/optional' into regulator-nextMark Brown
2013-09-20regulator: as3722: add regulator driver for AMS AS3722Laxman Dewangan
The AMS AS3722 is a compact system PMU suitable for mobile phones, tablets etc. It has 4 DCDC step down regulators, 3 DCDC step down controller, 11 LDOs. Add a driver to support accessing the DCDC/LDOs found on the AMS AS3722 PMIC using regulators. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Florian Lobmaier <florian.lobmaier@ams.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: add STw481x VMMC driverLinus Walleij
The ST Microelectronics STw481x PMIC used for the Nomadik has one single software-controlled regulator for VMMC. This driver registers directly to the compatible string as there is just one regulator. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: core: Provide a dummy regulator with full constraintsMark Brown
When a system has said that it has fully specified constraints for its regulators it is still possible that some supplies may be missing, especially if regulator support has been added to a driver after the board was integrated. We can handle such situations more gracefully by providing a dummy regulator. Unless the caller has specifically indicated that the system design may not include a given regulator by using regulator_get_optional() or that it needs its interactions to have an effect using regulator_get_exclusive() provide a dummy regulator if we can't locate a real one. The kconfig option REGULATOR_DUMMY that provided similar behaviour for all regulators has been removed, systems that need it should flag that they have full constraints instead. Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-01Merge remote-tracking branch 'regulator/topic/pfuze100' into regulator-nextMark Brown
2013-09-01Merge remote-tracking branch 'regulator/topic/kconfig' into regulator-nextMark Brown
2013-09-01Merge remote-tracking branch 'regulator/topic/da9063' into regulator-nextMark Brown
2013-08-30regulator: lp872x: Make REGULATOR_LP872X depend on I2C rather than I2C=yAxel Lin
lp872x regulator driver can be built a module after commit 631a1fc "regulator: build: Allow most regulators to be built as modules". Make REGULATOR_LP872X depend on I2C to allow building lp872x module when I2C=m. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-29regulator: build: Allow most regulators to be built as modulesMark Brown
Mostly for testing without bloating the kernel image rather than actual utility. Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-29regulator: da9063: Add Dialog DA9063 voltage regulators support.Krystian Garbaciak
The driver adds support for the following DA9063 PMIC regulators: - 11x LDOs (named LDO1 - LDO11), - 6x buck converters (BCORE1, BCORE2, BPRO, BMEM, BIO, BPERI), Regulators provide following operations: - REGULATOR_CHANGE_STATUS and REGULATOR_CHANGE_VOLTAGE for all regulators, - REGULATOR_CHANGE_MODE for LDOs and buck converters, where: - LDOs allow REGULATOR_MODE_NORMAL and REGULATOR_MODE_STANDBY, - buck converters allow REGULATOR_MODE_FAST, REGULATOR_MODE_NORMAL and REGULATOR_MODE_STANDBY, - REGULATOR_CHANGE_CURRENT for buck converters (current limits). The driver generates REGULATOR_EVENT_OVER_CURRENT for LDO3, LDO4, LDO7, LDO8 and LDO11. Internally, PMIC provides two voltage configurations for normal and suspend system state for each regulator. The driver switches between those on suspend/wake-up to provide quick and fluent output voltage change. This driver requires MFD core driver for operation. Signed-off-by: Krystian Garbaciak <krystian.garbaciak@diasemi.com> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-08-06regulator: da9210: New driverSteve Twiss
I2C driver for the Dialog DA9210 Multi-phase 12A DC-DC Buck. Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: David Dajun Chen <david.chen@diasemi.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-29regulator: pfuze100: REGULATOR_PFUZE100 needs to select REGMAP_I2CAxel Lin
This fixes below build errors: CC [M] drivers/regulator/pfuze100-regulator.o drivers/regulator/pfuze100-regulator.c:342:21: error: variable 'pfuze_regmap_config' has initializer but incomplete type drivers/regulator/pfuze100-regulator.c:343:2: error: unknown field 'reg_bits' specified in initializer drivers/regulator/pfuze100-regulator.c:343:2: warning: excess elements in struct initializer [enabled by default] drivers/regulator/pfuze100-regulator.c:343:2: warning: (near initialization for 'pfuze_regmap_config') [enabled by default] drivers/regulator/pfuze100-regulator.c:344:2: error: unknown field 'val_bits' specified in initializer drivers/regulator/pfuze100-regulator.c:344:2: warning: excess elements in struct initializer [enabled by default] drivers/regulator/pfuze100-regulator.c:344:2: warning: (near initialization for 'pfuze_regmap_config') [enabled by default] drivers/regulator/pfuze100-regulator.c:345:2: error: unknown field 'max_register' specified in initializer drivers/regulator/pfuze100-regulator.c:345:2: warning: excess elements in struct initializer [enabled by default] drivers/regulator/pfuze100-regulator.c:345:2: warning: (near initialization for 'pfuze_regmap_config') [enabled by default] drivers/regulator/pfuze100-regulator.c:346:2: error: unknown field 'cache_type' specified in initializer drivers/regulator/pfuze100-regulator.c:346:2: warning: excess elements in struct initializer [enabled by default] drivers/regulator/pfuze100-regulator.c:346:2: warning: (near initialization for 'pfuze_regmap_config') [enabled by default] drivers/regulator/pfuze100-regulator.c: In function 'pfuze100_regulator_probe': drivers/regulator/pfuze100-regulator.c:370:2: error: implicit declaration of function 'devm_regmap_init_i2c' [-Werror=implicit-function-declaration] drivers/regulator/pfuze100-regulator.c:370:21: warning: assignment makes pointer from integer without a cast [enabled by default] cc1: some warnings being treated as errors make[2]: *** [drivers/regulator/pfuze100-regulator.o] Error 1 make[1]: *** [drivers/regulator] Error 2 make: *** [drivers] Error 2 Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-25regulator: pfuze100: add pfuze100 regulator driverRobin Gong
Add pfuze100 regulator driver. Signed-off-by: Robin Gong <b38343@freescale.com> Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-19regulator: 88pm800: Depend on MFD_88PM800 rather than MFD_88PM800=yAxel Lin
This driver can be built as a module, make it depend on MFD_88PM800. Otherwise, we are not able to select this driver when MFD_88PM800=m. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-19regulator: 88pm800: add regulator driver for 88pm800Chao Xie
Add the regulator driver for PMIC 88pm800 including device tree support. 88pm800 is an I2C-based power-management IC containing voltage regulators, a real-time clock, and some general purpose ADC devices, Signed-off-by: Yi Zhang <yizhang@marvell.com> Signed-off-by: Chao Xie <chao.xie@marvell.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-18regulator: build: Sort KconfigMark Brown
Reduces merge issues if nothing else. Signed-off-by: Mark Brown <broonie@kernel.org>
2013-07-01Merge remote-tracking branch 'regulator/topic/abb' into regulator-nextMark Brown
2013-06-25regulator: max77693: Add max77693 regualtor driver.Jonghwa Lee
This patch adds new regulator driver to support max77693 chip's regulators. max77693 has two linear voltage regulators and one current regulator which can be controlled through I2C bus. This driver also supports device tree. Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-05-12regulator: Introduce TI Adaptive Body Bias(ABB) on-chip LDO driverAndrii.Tseglytskyi
Adaptive Body Biasing (ABB) modulates transistor bias voltages dynamically in order to optimize switching speed versus leakage. Texas Instruments' SmartReflex 2 technology provides support for this power management technique with Forward Body Biasing (FBB) and Reverse Body Biasing (RBB). These modulate the body voltage of transistor cells or blocks dynamically to gain performance and reduce leakage. TI's SmartReflex white paper[1] has further information for usage in conjunction with other power management techniques. The application of FBB/RBB technique is determined for each unique device in some process nodes, whereas, they are mandated on other process nodes. In a nutshell, ABB technique is implemented on TI SoC as an on-chip LDO which has ABB module controlling the bias voltage. However, the voltage is unique per device. These vary per SoC family and the manner in which these techniques are used may vary depending on the Operating Performance Point (OPP) voltage targeted. For example: OMAP3630/OMAP4430: certain OPPs mandate usage of FBB independent of devices. OMAP4460/OMAP4470: certain OPPs mandate usage of FBB, while others may optionally use FBB or optimization with RBB. OMAP5: ALL OPPs may optionally use ABB, and ABB biasing voltage is influenced by vset fused in s/w and requiring s/w override of default values. Further, two generations of ABB module are used in various TI SoCs. They have remained mostly register field compatible, however the register offset had switched between versions. We introduce ABB LDO support in the form of a regulator which is controlled by voltages denoting the desired Operating Performance Point which is targeted. However, since ABB transition is part of OPP change sequence, the sequencing required to ensure sane operation w.r.t OPP change is left to the controlling driver (example: cpufreq SoC driver) using standard regulator operations. The driver supports all ABB modes and ability to override ABB LDO vset control efuse based ABB mode detection etc. Current implementation is heavily influenced by the original patch series [2][3] from Mike Turquette. However, the current implementation supports only device tree based information. [1] http://www.ti.com/pdfs/wtbu/smartreflex_whitepaper.pdf [2] http://marc.info/?l=linux-omap&m=134931341818379&w=2 [3] http://marc.info/?l=linux-arm-kernel&m=134931402406853&w=2 [nm@ti.com: co-developer] Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Andrii.Tseglytskyi <andrii.tseglytskyi@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-04-16Convert selectors of GENERIC_GPIO to GPIOLIBAlexandre Courbot
GENERIC_GPIO is now equivalent to GPIOLIB and features that depended on GENERIC_GPIO can now depend on GPIOLIB to allow removal of this option. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca>
2013-02-19Merge remote-tracking branch 'regulator/topic/lp8755' into regulator-nextMark Brown
2013-01-13regulator: arizona-micsupp: Enable SYSCLK for charge pumpMark Brown
If we are in non-bypass mode then the SYSCLK is required for full charge pump operation, otherwise we will fall back to bypass mode. Use the DAPM context exposed by the ASoC driver to manage this. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 00:49:39 +0000