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path: root/drivers/regulator/palmas-regulator.c
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2017-07-03Merge remote-tracking branches 'regulator/topic/settle', ↵Mark Brown1-3/+15
'regulator/topic/tps65910' and 'regulator/topic/tps65917' into regulator-next
2017-05-25regulator: tps65917: Add support for SMPS12Keerthy1-3/+15
App support for SMPS12 dual phase regulator. Signed-off-by: Keerthy <j-keerthy@ti.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-05-14regulator: palmas: Drop unnecessary staticJulia Lawall1-1/+1
Drop static on a local variable, when the variable is initialized before any use, on every possible execution path through the function. The semantic patch that fixes this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; // </smpl> There is no reduction in code size in this case, but the change does reduce the size of the bss segment, containing uninitialized static data. before: text data bss dec hex filename 12882 3480 8 16370 3ff2 drivers/regulator/palmas-regulator.o after: text data bss dec hex filename 12882 3480 0 16362 3fea drivers/regulator/palmas-regulator.o Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-01-31regulator: palmas-regulator: constify regulator_ops structureBhumika Goyal1-12/+12
Declare regulator_ops structure as const as it is only stored in the ops field of a regulator_desc structure. This field is of type const, so regulator_ops structures having this property can be made const too. File size before: drivers/regulator/palmas-regulator.o text data bss dec hex filename 9752 6296 288 16336 3fd0 regulator/palmas-regulator.o File size after: drivers/regulator/palmas-regulator.o text data bss dec hex filename 12856 3480 8 16344 3fd0 regulator/palmas-regulator.o Signed-off-by: Bhumika Goyal <bhumirks@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-06regulator: tps65917/palmas: Simplify multiple dereference of match->of_nodeNishanth Menon1-11/+8
Just dereference match->of_node once instead of using match->of_node. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-06regulator: tps65917/palmas: Handle possible memory allocation failureNishanth Menon1-7/+14
Stop the palmas regulator driver from imagining that the allocations will always succeed. Since regulator dt nodes are optional in nature and can be described in downstream drivers via platform data, continue to maintain code flow as prior when of node is not found. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-06regulator: tps65917/palmas: Simplify multiple dereference of ↵Nishanth Menon1-9/+8
pdata->reg_init[idx] Converting dt to platform data logic involves picking up information that is unique per regulator, however we can improve readability of the code by allocating and referencing pdata->reg_init[idx] once in the loop. While at it, use sizeof(*pointer) when allocating pointer. This allows for structure name changes with minimal code change. Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-06regulator: tps65917/palmas: Simplify multiple dereference of ↵Nishanth Menon1-13/+14
ddata->palmas_matches[idx] Converting dt to platform data logic involves picking up information that is unique per regulator, however we can improve readability of the code by dereferencing ddata->palmas_matches[idx] once in the loop. While at it fix reuse of generic palmas_matches common variable while reporting error for a specific regulator (which may be from 65917/palmas list). Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-26regulator: tps65917/palmas: Add bypass "On" valueNishanth Menon1-0/+5
When commit b554e1450658 ("regulator: tps65917/palmas: Add bypass ops for LDOs with bypass capability") introduced bypass capability to palmas regulator, it went with the assumption that regulator regmap helpers just check val against the bypass_mask. Unfortunately, this ignored the explicit "on" and "off" values when the register value is masked with bypass_mask in commit ca5d1b3524b4 ("regulator: helpers: Modify helpers enabling multi-bit control"). With the recent commit dd1a571daee7 ("regulator: helpers: Ensure bypass register field matches ON value"), this issue gets highlighted and fails tps65917/palmas based platforms which need regulators/ldos that have bypass capability. Introduce the bypass_on value appropriately for tps65917/palmas regulator. Fixes: b554e1450658 ("regulator: tps65917/palmas: Add bypass ops for LDOs with bypass capability") Cc: Keerthy <j-keerthy@ti.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-12-16regulator: tps65917/palmas: Add bypass ops for LDOs with bypass capabilityKeerthy1-0/+39
set/get_bypass ops were missing for ldo1/ldo2 on tps65917 and ldo9 on palmas/tps659038 which support bypass mode. Adding the bypass ops helps consumers configure these ldos in bypass mode or remove bypass mode if need be. Signed-off-by: Keerthy <j-keerthy@ti.com> Reported-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-17regulator: palmas: Add has_regen3 check for TPS659038Keerthy1-1/+8
Palmas driver is used to cater to even TPS659038 but TPS659038 does not have REGEN3 resource. Adding another field in the driver data to check on that. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-17Merge branch 'fix/palmas' of ↵Mark Brown1-0/+4
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-palmas
2015-03-17regulator: palmas: Correct TPS659038 register definition for REGEN2Keerthy1-0/+4
The register offset for REGEN2_CTRL in different for TPS659038 chip as when compared with other Palmas family PMICs. In the case of TPS659038 the wrong offset pointed to PLLEN_CTRL and was causing a hang. Correcting the same. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
2015-03-17regulator: constify of_device_id arrayFabian Frederick1-1/+1
of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-10-20regulator: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-09-10regulator: remove unnecessary of_node_get() to parentGuodong Xu1-1/+0
These of_node_get() were added to balance refcount decrements inside of of_find_node_by_name(). See: commit c92f5dd2c42f ("regulator: Add missing of_node_put()") However of_find_node_by_name() was then replaced by of_get_child_by_name(), which doesn't call of_node_put() against its input parameter. So, need to remove these unnecessary of_node_get() calls. Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Reviewed-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2014-07-03regulator: palmas: Fix SMPS enable/disable/is_enable for tps65917Nishanth Menon1-0/+5
We use regmap regulator ops to enable/disable and check if regulator is enabled for various SMPS. However, these depend on valid enable_reg, enable_mask and enable_value in regulator descriptor. So, similar to fix we did in commit 318dbb02b50c ("regulator: palmas: Fix SMPS enable/disable/is_enabled"), populate the same for TPS65917 SMPS registration. LDO definitions are already in place. Fixes: d6f83370ed97 ("regulator: palmas: Add tps65917 PMIC support") Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-03regulator: palmas: Simplify code by not indexing regulator_desc unnecessarilyNishanth Menon1-136/+112
Palmas regulator needs to full up the regulator_desc based on PMIC and type of regulator. However, we dont need to do desc[id] every time. we can simplify by using a pointer to desc[id] and filling up the parameters. Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-03regulator: palmas: Rename palmas_regs_info to palmas_generic_regs_infoNishanth Menon1-2/+2
With commit d6f83370ed978d5570b7c8c22988310cb9376202 (regulator: palmas: Add tps65917 PMIC support) palmas_regs_info naming is confusing as it is a driver data parameter and a local variable. To prevent mistaken updates, rename the local variable to palmas_generic_regs_info. Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-03regulator: palmas: Simplify code by using pointer to palmas_reg_infoNishanth Menon1-53/+56
Palmas register information is part of the ddata pointer which is used through out the code by indexing off the driver data array. Instead, just do the indexing once and use the pointer to further reference structure fields. This simplifies code and prevents errors by accessing wrong variables. Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-03regulator: palmas: Rename reg_info to palmas_reg_infoNishanth Menon1-2/+2
reg_info is a generic term which might cause conflict at a later point in time. To prevent such a thing from occuring in future, rename to palmas_reg_info. Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Lee Jones <lee.jones@linaro.org> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-07-03regulator: palmas: Squelch sparse warningsNishanth Menon1-3/+3
convert to static variables to squelch the following sparse warnings: drivers/regulator/palmas-regulator.c:325:36: warning: symbol 'palma_sleep_req_info' was not declared. Should it be static? drivers/regulator/palmas-regulator.c:1414:32: warning: symbol 'palmas_ddata' was not declared. Should it be static? drivers/regulator/palmas-regulator.c:1427:32: warning: symbol 'tps65917_ddata' was not declared. Should it be static? Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Stephen Warren <swarren@nvidia.com> Tested-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-24Merge remote-tracking branch 'regulator/fix/palmas' into regulator-palmasMark Brown1-0/+12
Conflicts: drivers/regulator/palmas-regulator.c
2014-06-24regulator: palmas: fix typo in enable_reg calculationStephen Warren1-1/+1
When setting up .enable_reg for an SMPS regulator, presumably we should call PALMAS_BASE_TO_REG(PALMAS_SMPS_BASE, ...) rather than using LDO_BASE. This change makes the LCD panel and HDMI work again on the NVIDIA Dalmore board anyway. Fixes: 318dbb02b50c ("regulator: palmas: Fix SMPS enable/disable/is_enabled") Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Nishanth Menon <nm@ti.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-23regulator: palmas: Add tps65917 PMIC supportKeerthy1-0/+387
Add tps65917 PMIC support. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-23regulator: palmas: add driver data and modularize the probeKeerthy1-266/+392
add driver data and modularize the probe. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-23regulator: palmas: Shift the reg_info structure definition to the header fileKeerthy1-9/+0
Shift the reg_info structure definition to the header file. Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-21regulator: palmas: Fix SMPS enable/disable/is_enabledNishanth Menon1-0/+12
We use regmap regulator ops to enable/disable and check if regulator is enabled for various SMPS. However, these depend on valid enable_reg, enable_mask and enable_value in regulator descriptor. Currently we do not populate these for SMPS other than SMPS10, this results in spurious results as regmap assumes that the values are valid and ends up reading register 0x0 RTC:SECONDS_REG on Palmas variants that do have RTC! To fix this, we update proper parameters for the descriptor fields. Further, we want to ensure the behavior consistent with logic prior to commit dbabd624d4eec50b6, where, once you do a set_mode, enable/disable ensure the logic remains consistent and configures Palmas to the configuration that we set with set_mode (since the configuration register is common). To do this, we can rely on the regulator core's regulator_register behavior where the regulator descriptor pointer provided by the regulator driver is stored. (no reallocation and copy is done). This lets us update the enable_value post registration, to remain consistent with the mode we configure as part of set_mode. Fixes: dbabd624d4eec50b6 ("regulator: palmas: Reemove open coded functions with helper functions") Reported-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-05regulator: palmas: Fix SMPS list for 0VNishanth Menon1-0/+2
get_voltage_sel reads from SMPS register - if the read selector value is 0, the SMPS is actually disabled - So, this is in addition to the ctrl_register that may also be used to enable/disable the SMPS. The original logic(prior to commit dbabd624d4eec50b6) used to be: static int palmas_map_voltage_smps(struct regulator_dev *rdev, int min_uV, int max_uV) <snip> if (min_uV == 0) return 0; To handle this scenario, with the transition to regulator_list implementation, we seem to have missed the data necessary to mark as one of the valid entries as "0" 'disabled regulator' which results in 0 volts - So, stick with pre-existing logic. Without this added to the list, palmas regulator driver, on probe, attempts to setup constraints and in the case of OMAP5uEVM, SMPS9 (which is mapped for 2v1 audio supply) fails in regulator_list_voltage_linear_range mapping of '0', and as a fall back of constraints not being applied, the entire regulator list is not enumerated due to assumption that something system wide has gone bad on with the PMIC. Fixes: dbabd624d4eec50b6 ("regulator: palmas: Reemove open coded functions with helper functions") Reported-by: Olof Johansson <olof@lixom.net> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-02Merge remote-tracking branches 'regulator/topic/palmas', ↵Mark Brown1-132/+26
'regulator/topic/pbias', 'regulator/topic/pfuze100', 'regulator/topic/s2mpa01' and 'regulator/topic/s2mps11' into regulator-next
2014-05-22regulator: palmas: Reemove open coded functions with helper functionsKeerthy1-132/+26
Reemove open coded functions with helper functions. Signed-off-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2014-05-07regulator: palmas: Make of_device_id array constJingoo Han1-1/+1
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-24Merge remote-tracking branch 'regulator/topic/palmas' into regulator-nextMark Brown1-7/+159
2013-10-24Merge remote-tracking branch 'regulator/topic/alias' into regulator-nextMark Brown1-30/+12
2013-10-07regulator: palmas: get regulators node from parent node onlyLaxman Dewangan1-1/+1
The device tree binding of Palmas regulator driver says as: palmas_pmis { compatible = "ti,palmas-pmic"; ... regulators { ... } }; In this "regulators" subnode is expected to be part of parent node, not the outside of parent node. Hence to get the regulator node, the correct call is of_get_child_by_name() rather than of_find_node_by_name() which actually searches the "regulators" node from the parent node to end of DTS file. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: palmas: Remove wrong comment for the equation calculating ↵Axel Lin1-6/+0
num_voltages Current equation on the comment is wrong. For linear mapping starting from 0, the equation is (maxV-minV)/stepV + 1. Since the linear mapping for PALMAS is not all starting from 0, the equation on the comment is not useful and misleading. Thus remove it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17Merge remote-tracking branch 'regulator/topic/devm' into regulator-palmasMark Brown1-30/+12
Conflicts: drivers/regulator/palmas-regulator.c
2013-09-17regulator: palmas: configure enable time for LDOsLaxman Dewangan1-0/+6
As per datasheet (Referred TPS65913), the on-time for LDO is 500micro second. If LDO6 is in vibrator mode then the on-time is 2000us. Set the enable_time on regulator descriptor accordingly. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: palmas: add support for external control of railsLaxman Dewangan1-6/+158
Palmas rails like LDOs, SMPSs, REGENs, SYSENs can be enable and disable by register programming through I2C communication as well as it can be enable/disable with the external control input ENABLE1, ENABLE2 and NSLEEP. Add support for configuring these rails to be controlled by external control inputs. This is require to configure the rail's control register as well as configuration of resource register. Provide the external input names through parameter "roof-floor". Updated the DT binding document to details different value of the roof-floor. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: palmas: Drop regulator_unregister while using devm_regulator_registerAxel Lin1-3/+1
Commmit af40a94aba "regulator: palmas: Use devm_regulator_register" missed removing a regulator_unregister() call if palmas_extreg_init falis. Fix it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-17regulator: palmas: Use devm_regulator_registerSachin Kamat1-27/+11
devm_* simplifies the code. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-10regulator: palmas: configure enable time for LDOsLaxman Dewangan1-0/+6
As per datasheet (Referred TPS65913), the on-time for LDO is 500micro second. If LDO6 is in vibrator mode then the on-time is 2000us. Set the enable_time on regulator descriptor accordingly. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-04regulator: palmas: fix the n_voltages for smps to 122Laxman Dewangan1-1/+1
With the following change --------- commit ad02e846878ca35e9d3fa584be8ee770e9e14fce Author: Axel Lin <axel.lin@ingics.com> regulator: palmas: Return raw register values as the selectors in [get|set]_voltage_sel Don't adjust the selector in [get|set]_voltage_sel, fix it in list_voltage() instead. For smps*(except smps10), the vsel reg-value and voltage mapping as below: ---------- The list_voltage() takes the true value of selector which is programmed in the register. As per smsp voltage table reg-value volt (uV) ( Assume RANGE is x1 ) 0 0 1 500000 2 500000 3 500000 4 500000 5 500000 6 500000 (0.49V + 1 * 0.01V) * RANGE 7 510000 (0.49V + 2 * 0.01V) * RANGE 8 520000 (0.49V + 3 * 0.01V) * RANGE 9 530000 (0.49V + 4 * 0.01V) * RANGE .... 121 1650000 (0.49V + 116 * 0.1) * RANGE Hence making n_voltages for smps to 122. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-09-01Merge remote-tracking branch 'regulator/topic/palmas' into regulator-nextMark Brown1-6/+24
2013-08-12regulator: palmas: model SMPS10 as two regulatorsKishon Vijay Abraham I1-6/+24
SMPS10 has two outputs OUT1 and OUT2 and have one input IN1. SMPS10-OUT2 is connected to SMPS10-IN1 and can be configured either in BOOST mode or BYPASS mode. regulator_enable of SMPS10-OUT2 configures it in BOOST mode. For BYPASS mode regulator_allow_bypass() API can be used. SMPS10-OUT1 is connected to SMPS10-OUT2 and can be enabled using regulator_enable(). [ axel.lin@ingics.com : Simplify regulator_desc setting for SMPS10_[OUT1|OUT2] Signed-off-by: J Keerthy <j-keerthy@ti.com> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-07-30regulator: use dev_get_platdata()Jingoo Han1-1/+1
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Mark Brown <broonie@linaro.org>
2013-06-27regulator: palmas: Add TPS659038 supportJ Keerthy1-0/+1
Add TPS659038 support. Signed-off-by: J Keerthy <j-keerthy@ti.com> Acked-by: Mark Brown <broonie@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-06-20mfd: palmas: Add SMPS10_BOOST featureJ Keerthy1-0/+3
The SMPS10 regulator is not presesnt in all the variants of the PALMAS PMIC family. Hence adding a feature to distingush between them. Signed-off-by: J Keerthy <j-keerthy@ti.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-05-30regulator: palmas: Fix "enable_reg" to point to the correct reg for SMPS10Kishon Vijay Abraham I1-1/+1
regulator_enable_regmap() uses enable_reg to enable the regulator. But enable_reg for smps10 points to SMPS10_STATUS which is a read-only register. Fixed the same by having enable_reg set to SMPS10_CTRL. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@vger.kernel.org
2013-05-30regulator: palmas: Fix incorrect conditionSachin Kamat1-1/+1
Since 'id' cannot take two values at the same time, the condition should probably be an OR (||) instead of AND (&&). Introduced by commit 28d1e8cd67 ("regulator: palma: add ramp delay support through regulator constraints"). Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>