Patchwork [3/4] regulator: as3722: add regulator driver for AMS AS3722

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Submitter Laxman Dewangan
Date Sept. 17, 2013, 6:45 a.m.
Message ID <1379400338-20704-4-git-send-email-ldewangan@nvidia.com>
Download mbox | patch
Permalink /patch/275379/
State New
Headers show

Comments

Laxman Dewangan - Sept. 17, 2013, 6:45 a.m.
The AS3722 is a compact system PMU suitable for Mobile Phones,
Tablet 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>
---
 .../bindings/regulator/as3722-reguator.txt         |  103 +++
 drivers/regulator/Kconfig                          |    8 +
 drivers/regulator/Makefile                         |    1 +
 drivers/regulator/as3722-regulator.c               |  883 ++++++++++++++++++++
 4 files changed, 995 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/regulator/as3722-reguator.txt
 create mode 100644 drivers/regulator/as3722-regulator.c
Mark Brown - Sept. 17, 2013, 11:41 a.m.
On Tue, Sep 17, 2013 at 12:15:37PM +0530, Laxman Dewangan wrote:

> +               ams,enable-oc-config: Enable overcurrent configuration of the
> +               ams,oc-trip-threshold-perphase: Overcurrent trip threshold
> +               ams,oc-alarm-threshold-perphase: Overcurrent alarm threshold

These look like you should be implementing the current setting
operations in the framework, probably mapping to the alarm limit if
nothing else.

> +static int as3722_ldo_get_voltage_sel(struct regulator_dev *rdev)
> +{
> +	int ret;
> +
> +	ret = regulator_get_voltage_sel_regmap(rdev);
> +	if (ret >= 0x40)
> +		ret -= 0x1B;
> +	return ret;
> +}

This looks very strange.  What's going on here?  A gap in the selectors?
If that's the case you probably want to be using linear ranges.

> +static struct regulator_ops as3722_ldo_extcntrl_ops = {
> +	.get_voltage_sel = as3722_ldo_get_voltage_sel,
> +	.set_voltage_sel = as3722_ldo_set_voltage_sel,
> +	.list_voltage = regulator_list_voltage_linear,
> +};

You ought to be providing map_voltage() too, same for some if not all of
the other regulators.

> +static unsigned int as3722_sd_get_mode(struct regulator_dev *dev)
> +{
> +	struct as3722_regulators *as3722_regs = rdev_get_drvdata(dev);
> +	struct as3722 *as3722 = as3722_regs->as3722;
> +	int id = rdev_get_id(dev);
> +	u32 val;
> +	int ret;
> +
> +	if (!as3722_reg_lookup[id].control_reg)
> +		return -ERANGE;

That seems a bit of a random error code.  -ENOTSUPP?

> +static int as3722_sd_list_voltage(struct regulator_dev *rdev, unsigned selector)
> +{
> +	if (selector >= AS3722_SD2_VSEL_MAX)
> +		return -EINVAL;
> +
> +	selector++;
> +	if (selector <= 0x40)
> +		return 600000 + selector * 12500;
> +	if (selector <= 0x70)
> +		return 1400000 + (selector - 0x40) * 25000;
> +	if (selector <= 0x7F)
> +		return 2600000 + (selector - 0x70) * 50000;
> +	return -EINVAL;
> +}

Use linear ranges.

> +static struct of_regulator_match as3722_regulator_matches[] = {
> +	{.name = "sd0", },

	{ .name = "sd0", },

> +		config.of_node = as3722_regulator_matches[id].of_node;
> +		rdev = regulator_register(&as3722_regs->desc[id], &config);
> +		if (IS_ERR(rdev)) {

devm_regualtor_register().

> +		if (reg_config->ext_control) {
> +			ret = regulator_enable_regmap(rdev);
> +			if (ret < 0) {
> +				dev_err(&pdev->dev,
> +					"Regulator %d enable failed: %d\n",
> +					id, ret);
> +				goto scrub;
> +			}

This looks wrong...  why is the regualtor being enabled by something
other than the core?

> +static int __init as3722_regulator_init(void)
> +{
> +	return platform_driver_register(&as3722_regulator_driver);
> +}
> +subsys_initcall(as3722_regulator_init);
> +
> +static void __exit as3722_regulator_exit(void)
> +{
> +	platform_driver_unregister(&as3722_regulator_driver);
> +}
> +module_exit(as3722_regulator_exit);

module_platform_driver().
Laxman Dewangan - Sept. 17, 2013, 12:15 p.m.
>> +static int as3722_ldo_get_voltage_sel(struct regulator_dev *rdev)
>> +{
>> +	int ret;
>> +
>> +	ret = regulator_get_voltage_sel_regmap(rdev);
>> +	if (ret >= 0x40)
>> +		ret -= 0x1B;
>> +	return ret;
>> +}
> This looks very strange.  What's going on here?  A gap in the selectors?
> If that's the case you probably want to be using linear ranges.

Yes device does not want to be configure the vsel to 0x25 to 0x3F

   01h-24h : V_LDO1=0.8V+ldo1_vsel*25mV
   25h-3Fh : do not use
   40h-7Fh : V_LDO1=1.725V+(ldo1_vsel-40h)*25mV

Let me use linear range.

>> +		if (reg_config->ext_control) {
>> +			ret = regulator_enable_regmap(rdev);
>> +			if (ret < 0) {
>> +				dev_err(&pdev->dev,
>> +					"Regulator %d enable failed: %d\n",
>> +					id, ret);
>> +				goto scrub;
>> +			}
> This looks wrong...  why is the regualtor being enabled by something
> other than the core?

When the rail is configured externally controlled then we are not 
providing the enable/disable callback to enable through register access. 
So core will not be able to enable it.
Here, we are making sure that it is enabled through register write.
After that enable/disable can be done by device-input pin toggeling.
Stephen Warren - Sept. 23, 2013, 4:58 p.m.
On 09/17/2013 12:45 AM, Laxman Dewangan wrote:
> The AS3722 is a compact system PMU suitable for Mobile Phones,
> Tablet 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.

> diff --git a/Documentation/devicetree/bindings/regulator/as3722-reguator.txt b/Documentation/devicetree/bindings/regulator/as3722-reguator.txt

The filename is typo'd

> +AMS AS3722 regulator devicetree bindings.
> +The regulator node is sub node of the AS3722 node.

You probably want a blank line to separate the document title from the
body text.

> +Optional nodes:
> +- regulators : Must contain a sub-node per regulator from the list below.
> +	       Each sub-node should contain the constraints and initialization
> +	       information for that regulator. See regulator.txt for a
> +	       description of standard properties for these sub-nodes.
> +	       Additional custom properties  are listed below.
> +	       sd[0-6], ldo[0-7], ldo[9-11].

I think you want to prefix that last line with something like: "Valid
regulator names are: ".

> +		ams,ext-control: External control of the rail. The option of
> +			this properties will tell which external input is
> +			controlling this rail. Valid values are 0, 1, 2 ad 3.
> +			0: There is no external control of this rail.
> +			1: Rail is controlled by ENABLE1 input pin.
> +			2: Rail is controlled by ENABLE1 input pin.
> +			3: Rail is controlled by ENABLE1 input pin.

Those last 3 lines all say the same thing.

Patch

diff --git a/Documentation/devicetree/bindings/regulator/as3722-reguator.txt b/Documentation/devicetree/bindings/regulator/as3722-reguator.txt
new file mode 100644
index 0000000..414eda2
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/as3722-reguator.txt
@@ -0,0 +1,103 @@ 
+AMS AS3722 regulator devicetree bindings.
+The regulator node is sub node of the AS3722 node.
+
+Required properties:
+- compatible : Must be ams,as3722-regulator.
+
+Optional properties:
+The input supply of regulators are the optional properties on the
+regulator node. The AS3722 is having 7 DCDC step-down regulators as
+sd[0-6], 10 LDOs as ldo[0-7], ldo[9-11]. The input supply of these
+regulators are provided through following properties:
+vsup-sd2-supply: Input supply for SD2.
+vsup-sd3-supply: Input supply for SD3.
+vsup-sd4-supply: Input supply for SD4.
+vsup-sd5-supply: Input supply for SD5.
+vin-ldo0-supply: Input supply for LDO0.
+vin-ldo1-6-supply: Input supply for LDO1 and LDO6.
+vin-ldo2-5-7-supply: Input supply for LDO2, LDO5 and LDO7.
+vin-ldo3-4-supply: Input supply for LDO3 and LDO4.
+vin-ldo9-10-supply: Input supply for LDO9 and LDO10.
+vin-ldo11-supply: Input supply for LDO11.
+
+Optional nodes:
+- regulators : Must contain a sub-node per regulator from the list below.
+	       Each sub-node should contain the constraints and initialization
+	       information for that regulator. See regulator.txt for a
+	       description of standard properties for these sub-nodes.
+	       Additional custom properties  are listed below.
+	       sd[0-6], ldo[0-7], ldo[9-11].
+
+	       Optional sub-node properties:
+		ams,ext-control: External control of the rail. The option of
+			this properties will tell which external input is
+			controlling this rail. Valid values are 0, 1, 2 ad 3.
+			0: There is no external control of this rail.
+			1: Rail is controlled by ENABLE1 input pin.
+			2: Rail is controlled by ENABLE1 input pin.
+			3: Rail is controlled by ENABLE1 input pin.
+		ams,enable-oc-config: Enable overcurrent configuration of the
+			rails. This is applicable for SD0, SD1 and SD6 only.
+			Other rails do not support this configuration.
+		ams,oc-trip-threshold-perphase: Overcurrent trip threshold
+			per phase. This is in milliAmp. The valid values are:
+			2500, 3000 and 3500. Please refer datasheet for more
+			detail.
+		ams,oc-alarm-threshold-perphase: Overcurrent alarm threshold
+			per phase. This is in milliAmp. The valid values are:
+			1600, 1800, 2000, 2200, 2400, 2600, 2800. This is only
+			supported for SD0.
+		ams,enable-tracking: Enable tracking with SD1, only supported
+			by LDO3.
+
+Example:
+	ams3722: ams3722 {
+		compatible = "ams,as3722";
+		reg = <0x40>;
+		...
+
+		regulators {
+			compatible = "ams,as3722-regulator";
+			vsup-sd2-supply = <...>;
+			sd0 {
+				regulator-name = "vdd_cpu";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1400000>;
+				regulator-always-on;
+				ams,ext-control = <2>;
+				ams,enable-oc-config;
+				ams,oc-trip-threshold-perphase = <3500>;
+				ams,oc-alarm-threshold-perphase = <0>;
+			};
+
+			sd1 {
+				regulator-name = "vdd_core";
+				regulator-min-microvolt = <700000>;
+				regulator-max-microvolt = <1400000>;
+				regulator-always-on;
+				ams,ext-control = <1>;
+				ams,enable-oc-config;
+				ams,oc-trip-threshold-perphase = <2500>;
+				ams,oc-alarm-threshold-perphase = <0>;
+			};
+			sd2 {
+				regulator-name = "vddio_ddr";
+				regulator-min-microvolt = <1350000>;
+				regulator-max-microvolt = <1350000>;
+				regulator-always-on;
+			};
+			sd4 {
+				regulator-name = "avdd-hdmi-pex";
+				regulator-min-microvolt = <1050000>;
+				regulator-max-microvolt = <1050000>;
+				regulator-always-on;
+			};
+			sd5 {
+				regulator-name = "vdd-1v8";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-always-on;
+			};
+				....
+		};
+	};
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index dfe5809..9869064 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -133,6 +133,14 @@  config REGULATOR_AS3711
 	  This driver provides support for the voltage regulators on the
 	  AS3711 PMIC
 
+config REGULATOR_AS3722
+	tristate "AMS AS3722 PMIC Regulators"
+	depends on MFD_AS3722
+	help
+	  This driver provides support for the voltage regulators on the
+	  AS3722 PMIC. This will enable support for all the software
+	  controllable DCDC/LDO regulators.
+
 config REGULATOR_DA903X
 	tristate "Dialog Semiconductor DA9030/DA9034 regulators"
 	depends on PMIC_DA903X
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 185cce2..0b233bb 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -18,6 +18,7 @@  obj-$(CONFIG_REGULATOR_AD5398) += ad5398.o
 obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
 obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
 obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
+obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o
 obj-$(CONFIG_REGULATOR_DA903X)	+= da903x.o
 obj-$(CONFIG_REGULATOR_DA9052)	+= da9052-regulator.o
 obj-$(CONFIG_REGULATOR_DA9055)	+= da9055-regulator.o
diff --git a/drivers/regulator/as3722-regulator.c b/drivers/regulator/as3722-regulator.c
new file mode 100644
index 0000000..9baadaf
--- /dev/null
+++ b/drivers/regulator/as3722-regulator.c
@@ -0,0 +1,883 @@ 
+/*
+ * as3722-regulator.c - voltage regulator support for AS3722
+ *
+ * Copyright (C) 2013 ams
+ *
+ * Author: Florian Lobmaier <florian.lobmaier@ams.com>
+ * Author: Laxman Dewangan <ldewangan@nvidia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ */
+
+#include <linux/bug.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mfd/as3722.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+/* Regulator IDs */
+enum as3722_regulators_id {
+	AS3722_REGULATOR_ID_SD0,
+	AS3722_REGULATOR_ID_SD1,
+	AS3722_REGULATOR_ID_SD2,
+	AS3722_REGULATOR_ID_SD3,
+	AS3722_REGULATOR_ID_SD4,
+	AS3722_REGULATOR_ID_SD5,
+	AS3722_REGULATOR_ID_SD6,
+	AS3722_REGULATOR_ID_LDO0,
+	AS3722_REGULATOR_ID_LDO1,
+	AS3722_REGULATOR_ID_LDO2,
+	AS3722_REGULATOR_ID_LDO3,
+	AS3722_REGULATOR_ID_LDO4,
+	AS3722_REGULATOR_ID_LDO5,
+	AS3722_REGULATOR_ID_LDO6,
+	AS3722_REGULATOR_ID_LDO7,
+	AS3722_REGULATOR_ID_LDO9,
+	AS3722_REGULATOR_ID_LDO10,
+	AS3722_REGULATOR_ID_LDO11,
+	AS3722_REGULATOR_ID_MAX,
+};
+
+struct as3722_register_mapping {
+	u8 regulator_id;
+	const char *name;
+	const char *sname;
+	u8 vsel_reg;
+	u8 vsel_mask;
+	int n_voltages;
+	u32 enable_reg;
+	u8 enable_mask;
+	u32 control_reg;
+	u8 mode_mask;
+	u32 sleep_ctrl_reg;
+	u8 sleep_ctrl_mask;
+};
+
+struct as3722_regulator_config_data {
+	struct regulator_init_data *reg_init;
+	bool enable_tracking;
+	int ext_control;
+	bool enable_oc_configure;
+	int oc_trip_thres_perphase;
+	int oc_alarm_thres_perphase;
+};
+
+struct as3722_regulators {
+	struct device *dev;
+	struct as3722 *as3722;
+	struct regulator_dev *rdevs[AS3722_REGULATOR_ID_MAX];
+	struct regulator_desc desc[AS3722_REGULATOR_ID_MAX];
+	struct as3722_regulator_config_data
+			reg_config_data[AS3722_REGULATOR_ID_MAX];
+};
+
+static const struct as3722_register_mapping as3722_reg_lookup[] = {
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD0,
+		.name = "as3722-sd0",
+		.vsel_reg = AS3722_SD0_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(0),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+		.sleep_ctrl_mask = AS3722_SD0_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD0_CONTROL_REG,
+		.mode_mask = AS3722_SD0_MODE_FAST,
+		.n_voltages = AS3722_SD0_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD1,
+		.name = "as3722-sd1",
+		.vsel_reg = AS3722_SD1_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(1),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+		.sleep_ctrl_mask = AS3722_SD1_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD1_CONTROL_REG,
+		.mode_mask = AS3722_SD1_MODE_FAST,
+		.n_voltages = AS3722_SD0_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD2,
+		.name = "as3722-sd2",
+		.sname = "vsup-sd2",
+		.vsel_reg = AS3722_SD2_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(2),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+		.sleep_ctrl_mask = AS3722_SD2_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD23_CONTROL_REG,
+		.mode_mask = AS3722_SD2_MODE_FAST,
+		.n_voltages = AS3722_SD2_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD3,
+		.name = "as3722-sd3",
+		.sname = "vsup-sd3",
+		.vsel_reg = AS3722_SD3_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(3),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL1_REG,
+		.sleep_ctrl_mask = AS3722_SD3_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD23_CONTROL_REG,
+		.mode_mask = AS3722_SD3_MODE_FAST,
+		.n_voltages = AS3722_SD2_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD4,
+		.name = "as3722-sd4",
+		.sname = "vsup-sd4",
+		.vsel_reg = AS3722_SD4_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(4),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
+		.sleep_ctrl_mask = AS3722_SD4_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD4_CONTROL_REG,
+		.mode_mask = AS3722_SD4_MODE_FAST,
+		.n_voltages = AS3722_SD2_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD5,
+		.name = "as3722-sd5",
+		.sname = "vsup-sd5",
+		.vsel_reg = AS3722_SD5_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(5),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
+		.sleep_ctrl_mask = AS3722_SD5_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD5_CONTROL_REG,
+		.mode_mask = AS3722_SD5_MODE_FAST,
+		.n_voltages = AS3722_SD2_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_SD6,
+		.name = "as3722-sd6",
+		.vsel_reg = AS3722_SD6_VOLTAGE_REG,
+		.vsel_mask = AS3722_SD_VSEL_MASK,
+		.enable_reg = AS3722_SD_CONTROL_REG,
+		.enable_mask = AS3722_SDn_CTRL(6),
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL2_REG,
+		.sleep_ctrl_mask = AS3722_SD6_EXT_ENABLE_MASK,
+		.control_reg = AS3722_SD6_CONTROL_REG,
+		.mode_mask = AS3722_SD6_MODE_FAST,
+		.n_voltages = AS3722_SD0_VSEL_MAX,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO0,
+		.name = "as3722-ldo0",
+		.sname = "vin-ldo0",
+		.vsel_reg = AS3722_LDO0_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO0_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO0_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+		.sleep_ctrl_mask = AS3722_LDO0_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO0_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO1,
+		.name = "as3722-ldo1",
+		.sname = "vin-ldo1-6",
+		.vsel_reg = AS3722_LDO1_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO1_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+		.sleep_ctrl_mask = AS3722_LDO1_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO2,
+		.name = "as3722-ldo2",
+		.sname = "vin-ldo2-5-7",
+		.vsel_reg = AS3722_LDO2_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO2_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+		.sleep_ctrl_mask = AS3722_LDO2_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO3,
+		.name = "as3722-ldo3",
+		.name = "vin-ldo3-4",
+		.vsel_reg = AS3722_LDO3_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO3_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO3_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL3_REG,
+		.sleep_ctrl_mask = AS3722_LDO3_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO3_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO4,
+		.name = "as3722-ldo4",
+		.name = "vin-ldo3-4",
+		.vsel_reg = AS3722_LDO4_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO4_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+		.sleep_ctrl_mask = AS3722_LDO4_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO5,
+		.name = "as3722-ldo5",
+		.sname = "vin-ldo2-5-7",
+		.vsel_reg = AS3722_LDO5_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO5_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+		.sleep_ctrl_mask = AS3722_LDO5_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO6,
+		.name = "as3722-ldo6",
+		.sname = "vin-ldo1-6",
+		.vsel_reg = AS3722_LDO6_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO6_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+		.sleep_ctrl_mask = AS3722_LDO6_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO7,
+		.name = "as3722-ldo7",
+		.sname = "vin-ldo2-5-7",
+		.vsel_reg = AS3722_LDO7_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL0_REG,
+		.enable_mask = AS3722_LDO7_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL4_REG,
+		.sleep_ctrl_mask = AS3722_LDO7_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO9,
+		.name = "as3722-ldo9",
+		.sname = "vin-ldo9-10",
+		.vsel_reg = AS3722_LDO9_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL1_REG,
+		.enable_mask = AS3722_LDO9_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
+		.sleep_ctrl_mask = AS3722_LDO9_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO10,
+		.name = "as3722-ldo10",
+		.sname = "vin-ldo9-10",
+		.vsel_reg = AS3722_LDO10_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL1_REG,
+		.enable_mask = AS3722_LDO10_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
+		.sleep_ctrl_mask = AS3722_LDO10_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+	{
+		.regulator_id = AS3722_REGULATOR_ID_LDO11,
+		.name = "as3722-ldo11",
+		.sname = "vin-ldo11",
+		.vsel_reg = AS3722_LDO11_VOLTAGE_REG,
+		.vsel_mask = AS3722_LDO_VSEL_MASK,
+		.enable_reg = AS3722_LDOCONTROL1_REG,
+		.enable_mask = AS3722_LDO11_CTRL,
+		.sleep_ctrl_reg = AS3722_ENABLE_CTRL5_REG,
+		.sleep_ctrl_mask = AS3722_LDO11_EXT_ENABLE_MASK,
+		.n_voltages = AS3722_LDO_NUM_VOLT,
+	},
+};
+
+static struct regulator_ops as3722_ldo0_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.list_voltage = regulator_list_voltage_linear,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static struct regulator_ops as3722_ldo0_extcntrl_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static int as3722_ldo3_set_tracking_mode(struct as3722_regulators *as3722_reg,
+		int id, u8 mode)
+{
+	struct as3722 *as3722 = as3722_reg->as3722;
+
+	switch (mode) {
+	case AS3722_LDO3_MODE_PMOS:
+	case AS3722_LDO3_MODE_PMOS_TRACKING:
+	case AS3722_LDO3_MODE_NMOS:
+	case AS3722_LDO3_MODE_SWITCH:
+		return as3722_update_bits(as3722,
+			as3722_reg_lookup[id].vsel_reg,
+			AS3722_LDO3_MODE_MASK, mode);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static struct regulator_ops as3722_ldo3_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.list_voltage = regulator_list_voltage_linear,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static struct regulator_ops as3722_ldo3_extcntrl_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+static int as3722_ldo_get_voltage_sel(struct regulator_dev *rdev)
+{
+	int ret;
+
+	ret = regulator_get_voltage_sel_regmap(rdev);
+	if (ret >= 0x40)
+		ret -= 0x1B;
+	return ret;
+}
+
+static int as3722_ldo_set_voltage_sel(struct regulator_dev *rdev,
+		unsigned int selector)
+{
+	unsigned int sel = selector;
+
+	if (sel >= 0x25)
+		sel += 0x1B;
+	return regulator_set_voltage_sel_regmap(rdev, sel);
+}
+
+static struct regulator_ops as3722_ldo_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.get_voltage_sel = as3722_ldo_get_voltage_sel,
+	.set_voltage_sel = as3722_ldo_set_voltage_sel,
+	.list_voltage = regulator_list_voltage_linear,
+};
+
+static struct regulator_ops as3722_ldo_extcntrl_ops = {
+	.get_voltage_sel = as3722_ldo_get_voltage_sel,
+	.set_voltage_sel = as3722_ldo_set_voltage_sel,
+	.list_voltage = regulator_list_voltage_linear,
+};
+
+static unsigned int as3722_sd_get_mode(struct regulator_dev *dev)
+{
+	struct as3722_regulators *as3722_regs = rdev_get_drvdata(dev);
+	struct as3722 *as3722 = as3722_regs->as3722;
+	int id = rdev_get_id(dev);
+	u32 val;
+	int ret;
+
+	if (!as3722_reg_lookup[id].control_reg)
+		return -ERANGE;
+
+	ret = as3722_read(as3722, as3722_reg_lookup[id].control_reg, &val);
+	if (ret < 0) {
+		dev_err(as3722_regs->dev, "Reg 0x%02x read failed: %d\n",
+			as3722_reg_lookup[id].control_reg, ret);
+		return ret;
+	}
+
+	if (val & as3722_reg_lookup[id].mode_mask)
+		return REGULATOR_MODE_FAST;
+	else
+		return REGULATOR_MODE_NORMAL;
+}
+
+static int as3722_sd_set_mode(struct regulator_dev *dev,
+		unsigned int mode)
+{
+	struct as3722_regulators *as3722_regs = rdev_get_drvdata(dev);
+	struct as3722 *as3722 = as3722_regs->as3722;
+	u8 id = rdev_get_id(dev);
+	u8 val = 0;
+	int ret;
+
+	if (!as3722_reg_lookup[id].control_reg)
+		return -ERANGE;
+
+	switch (mode) {
+	case REGULATOR_MODE_FAST:
+		val = as3722_reg_lookup[id].mode_mask;
+	case REGULATOR_MODE_NORMAL: /* fall down */
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = as3722_update_bits(as3722, as3722_reg_lookup[id].control_reg,
+			as3722_reg_lookup[id].mode_mask, val);
+	if (ret < 0) {
+		dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
+			as3722_reg_lookup[id].control_reg, ret);
+		return ret;
+	}
+	return ret;
+}
+
+static int as3722_sd_list_voltage(struct regulator_dev *rdev, unsigned selector)
+{
+	if (selector >= AS3722_SD2_VSEL_MAX)
+		return -EINVAL;
+
+	selector++;
+	if (selector <= 0x40)
+		return 600000 + selector * 12500;
+	if (selector <= 0x70)
+		return 1400000 + (selector - 0x40) * 25000;
+	if (selector <= 0x7F)
+		return 2600000 + (selector - 0x70) * 50000;
+	return -EINVAL;
+}
+
+static struct regulator_ops as3722_sd016_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.list_voltage = regulator_list_voltage_linear,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_mode = as3722_sd_get_mode,
+	.set_mode = as3722_sd_set_mode,
+};
+
+static struct regulator_ops as3722_sd016_extcntrl_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_mode = as3722_sd_get_mode,
+	.set_mode = as3722_sd_set_mode,
+};
+
+static struct regulator_ops as3722_sd2345_ops = {
+	.is_enabled = regulator_is_enabled_regmap,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.list_voltage = as3722_sd_list_voltage,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_mode = as3722_sd_get_mode,
+	.set_mode = as3722_sd_set_mode,
+};
+
+static struct regulator_ops as3722_sd2345_extcntrl_ops = {
+	.list_voltage = as3722_sd_list_voltage,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_mode = as3722_sd_get_mode,
+	.set_mode = as3722_sd_set_mode,
+};
+
+static int as3722_extreg_init(struct as3722_regulators *as3722_regs, int id,
+		int ext_pwr_ctrl)
+{
+	int ret;
+	unsigned int val;
+
+	if ((ext_pwr_ctrl < AS3722_EXT_CONTROL_ENABLE1) ||
+		(ext_pwr_ctrl > AS3722_EXT_CONTROL_ENABLE3))
+		return -EINVAL;
+
+	val =  ext_pwr_ctrl << (ffs(as3722_reg_lookup[id].sleep_ctrl_mask) - 1);
+	ret = as3722_update_bits(as3722_regs->as3722,
+			as3722_reg_lookup[id].sleep_ctrl_reg,
+			as3722_reg_lookup[id].sleep_ctrl_mask, val);
+	if (ret < 0)
+		dev_err(as3722_regs->dev, "Reg 0x%02x update failed: %d\n",
+			as3722_reg_lookup[id].sleep_ctrl_reg, ret);
+	return ret;
+}
+
+static const int oc_alarm_table[] = {
+	0, 1600, 1800, 2000, 2200, 2400, 2600, 2800
+};
+
+static int as3722_overcurrent_init(struct as3722_regulators *as3722_regs,
+		int id, struct as3722_regulator_config_data *reg_config)
+{
+	int ret;
+	int oc_trip = reg_config->oc_trip_thres_perphase;
+	int oc_alarm = reg_config->oc_alarm_thres_perphase;
+	int mask;
+	int reg;
+	int trip_val;
+	int alarm_val;
+	int i;
+	int val;
+
+	if (oc_trip <= 2500)
+		trip_val = 0;
+	else if (oc_trip <= 3000)
+		trip_val = 1;
+	else
+		trip_val = 2;
+
+	for (i = 0; i < ARRAY_SIZE(oc_alarm_table); ++i) {
+		if (oc_alarm <=  oc_alarm_table[i])
+			break;
+	}
+	alarm_val = i;
+
+	switch (id) {
+	case AS3722_REGULATOR_ID_SD0:
+		mask = AS3722_OVCURRENT_SD0_ALARM_MASK |
+				AS3722_OVCURRENT_SD0_TRIP_MASK;
+		val = (trip_val << AS3722_OVCURRENT_SD0_TRIP_SHIFT) |
+				(alarm_val << AS3722_OVCURRENT_SD0_ALARM_SHIFT);
+		reg = AS3722_OVCURRENT_REG;
+		break;
+
+	case AS3722_REGULATOR_ID_SD1:
+		mask = AS3722_OVCURRENT_SD1_TRIP_MASK;
+		val = (trip_val << AS3722_OVCURRENT_SD1_TRIP_SHIFT);
+		reg = AS3722_OVCURRENT_REG;
+		break;
+
+	case AS3722_REGULATOR_ID_SD6:
+		mask = AS3722_OVCURRENT_SD6_ALARM_MASK |
+				AS3722_OVCURRENT_SD6_TRIP_MASK;
+		val = (trip_val << AS3722_OVCURRENT_SD6_TRIP_SHIFT) |
+				(alarm_val << AS3722_OVCURRENT_SD6_ALARM_SHIFT);
+		reg = AS3722_OVCURRENT_DEB_REG;
+		break;
+	default:
+		return 0;
+	}
+	ret = as3722_update_bits(as3722_regs->as3722, reg, mask, val);
+	if (ret < 0)
+		dev_err(as3722_regs->dev, "Reg 0x%02x update failed %d\n",
+			reg, ret);
+	return ret;
+}
+
+static struct of_regulator_match as3722_regulator_matches[] = {
+	{.name = "sd0", },
+	{.name = "sd1", },
+	{.name = "sd2", },
+	{.name = "sd3", },
+	{.name = "sd4", },
+	{.name = "sd5", },
+	{.name = "sd6", },
+	{.name = "ldo0", },
+	{.name = "ldo1", },
+	{.name = "ldo2", },
+	{.name = "ldo3", },
+	{.name = "ldo4", },
+	{.name = "ldo5", },
+	{.name = "ldo6", },
+	{.name = "ldo7", },
+	{.name = "ldo9", },
+	{.name = "ldo10", },
+	{.name = "ldo11", },
+};
+
+static int as3722_get_regulator_dt_data(struct platform_device *pdev,
+		struct as3722_regulators *as3722_regs)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct as3722_regulator_config_data *reg_config;
+	u32 prop;
+	int id;
+	int ret;
+
+	if (!np) {
+		dev_err(&pdev->dev, "Device does not have regulators node\n");
+		return -ENODEV;
+	}
+
+	ret = of_regulator_match(&pdev->dev, np, as3722_regulator_matches,
+			ARRAY_SIZE(as3722_regulator_matches));
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Parsing of regulator node failed: %d\n",
+			ret);
+		return ret;
+	}
+
+	for (id = 0; id < ARRAY_SIZE(as3722_regulator_matches); ++id) {
+		struct device_node *reg_node;
+
+		reg_config = &as3722_regs->reg_config_data[id];
+		reg_config->reg_init = as3722_regulator_matches[id].init_data;
+		reg_node = as3722_regulator_matches[id].of_node;
+
+		if (!reg_config->reg_init || !reg_node)
+			continue;
+
+		ret = of_property_read_u32(reg_node, "ams,ext-control", &prop);
+		if (!ret) {
+			if (prop < 3)
+				reg_config->ext_control = prop;
+			else
+				dev_warn(&pdev->dev,
+					"ext-control have invalid option: %u\n",
+					prop);
+		}
+		reg_config->enable_tracking =
+			of_property_read_bool(reg_node, "ams,enable-tracking");
+
+		reg_config->enable_oc_configure =
+			of_property_read_bool(reg_node, "ams,enable-oc-config");
+		if (reg_config->enable_oc_configure) {
+			ret = of_property_read_u32(reg_node,
+				    "ams,oc-trip-threshold-perphase", &prop);
+			if (!ret)
+				reg_config->oc_trip_thres_perphase = prop;
+
+			ret = of_property_read_u32(reg_node,
+				    "ams,oc-alarm-threshold-perphase", &prop);
+			if (!ret)
+				reg_config->oc_alarm_thres_perphase = prop;
+		}
+	}
+	return 0;
+}
+
+static int as3722_regulator_probe(struct platform_device *pdev)
+{
+	struct as3722 *as3722 = dev_get_drvdata(pdev->dev.parent);
+	struct as3722_regulators *as3722_regs;
+	struct as3722_regulator_config_data *reg_config;
+	struct regulator_dev *rdev;
+	struct regulator_config config = { };
+	struct regulator_ops *ops;
+	int id;
+	int ret;
+
+	as3722_regs = devm_kzalloc(&pdev->dev, sizeof(*as3722_regs),
+				GFP_KERNEL);
+	if (!as3722_regs) {
+		dev_err(&pdev->dev, "Malloc for as3722_regs failed\n");
+		return -ENOMEM;
+	}
+
+	as3722_regs->dev = &pdev->dev;
+	as3722_regs->as3722 = as3722;
+	platform_set_drvdata(pdev, as3722_regs);
+
+	ret = as3722_get_regulator_dt_data(pdev, as3722_regs);
+	if (ret < 0)
+		return ret;
+
+	config.dev = &pdev->dev;
+	config.driver_data = as3722_regs;
+	config.regmap = as3722->regmap;
+
+	for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
+		reg_config = &as3722_regs->reg_config_data[id];
+
+		if (reg_config->enable_oc_configure) {
+			ret = as3722_overcurrent_init(as3722_regs, id,
+					reg_config);
+			if (ret < 0) {
+				dev_err(&pdev->dev,
+					"OC init for regulator %d failed %d\n",
+					id, ret);
+				return ret;
+			}
+		}
+		as3722_regs->desc[id].name = as3722_reg_lookup[id].name;
+		as3722_regs->desc[id].supply_name = as3722_reg_lookup[id].sname;
+		as3722_regs->desc[id].id = as3722_reg_lookup[id].regulator_id;
+		as3722_regs->desc[id].n_voltages =
+					as3722_reg_lookup[id].n_voltages;
+		as3722_regs->desc[id].type = REGULATOR_VOLTAGE;
+		as3722_regs->desc[id].owner = THIS_MODULE;
+		as3722_regs->desc[id].enable_reg =
+					as3722_reg_lookup[id].enable_reg;
+		as3722_regs->desc[id].enable_mask =
+					as3722_reg_lookup[id].enable_mask;
+		as3722_regs->desc[id].vsel_reg = as3722_reg_lookup[id].vsel_reg;
+		as3722_regs->desc[id].vsel_mask =
+					as3722_reg_lookup[id].vsel_mask;
+		switch (id) {
+		case AS3722_REGULATOR_ID_LDO0:
+			if (reg_config->ext_control)
+				ops = &as3722_ldo0_extcntrl_ops;
+			else
+				ops = &as3722_ldo0_ops;
+			as3722_regs->desc[id].min_uV = 825000;
+			as3722_regs->desc[id].uV_step = 25000;
+			as3722_regs->desc[id].linear_min_sel = 1;
+			as3722_regs->desc[id].enable_time = 500;
+			break;
+		case AS3722_REGULATOR_ID_LDO3:
+			if (reg_config->ext_control)
+				ops = &as3722_ldo3_extcntrl_ops;
+			else
+				ops = &as3722_ldo3_ops;
+			as3722_regs->desc[id].min_uV = 620000;
+			as3722_regs->desc[id].uV_step = 20000;
+			as3722_regs->desc[id].linear_min_sel = 1;
+			as3722_regs->desc[id].enable_time = 500;
+			if (reg_config->enable_tracking) {
+				ret = as3722_ldo3_set_tracking_mode(as3722_regs,
+					id, AS3722_LDO3_MODE_PMOS_TRACKING);
+				if (ret < 0) {
+					dev_err(&pdev->dev,
+						"LDO3 tracking failed: %d\n",
+						ret);
+					goto scrub;
+				}
+			}
+			break;
+		case AS3722_REGULATOR_ID_SD0:
+		case AS3722_REGULATOR_ID_SD1:
+		case AS3722_REGULATOR_ID_SD6:
+			if (reg_config->ext_control)
+				ops = &as3722_sd016_extcntrl_ops;
+			else
+				ops = &as3722_sd016_ops;
+			as3722_regs->desc[id].min_uV = 610000;
+			as3722_regs->desc[id].uV_step = 10000;
+			as3722_regs->desc[id].linear_min_sel = 1;
+			break;
+		case AS3722_REGULATOR_ID_SD2:
+		case AS3722_REGULATOR_ID_SD3:
+		case AS3722_REGULATOR_ID_SD4:
+		case AS3722_REGULATOR_ID_SD5:
+			if (reg_config->ext_control)
+				ops = &as3722_sd2345_extcntrl_ops;
+			else
+				ops = &as3722_sd2345_ops;
+			break;
+		default:
+			if (reg_config->ext_control)
+				ops = &as3722_ldo_extcntrl_ops;
+			else
+				ops = &as3722_ldo_ops;
+			as3722_regs->desc[id].min_uV = 825000;
+			as3722_regs->desc[id].uV_step = 25000;
+			as3722_regs->desc[id].linear_min_sel = 1;
+			as3722_regs->desc[id].enable_time = 500;
+			break;
+		}
+		as3722_regs->desc[id].ops = ops;
+		config.init_data = reg_config->reg_init;
+		config.of_node = as3722_regulator_matches[id].of_node;
+		rdev = regulator_register(&as3722_regs->desc[id], &config);
+		if (IS_ERR(rdev)) {
+			ret = PTR_ERR(rdev);
+			dev_err(&pdev->dev, "regulator %d register failed %d\n",
+				id, ret);
+			goto scrub;
+		}
+
+		as3722_regs->rdevs[id] = rdev;
+		if (reg_config->ext_control) {
+			ret = regulator_enable_regmap(rdev);
+			if (ret < 0) {
+				dev_err(&pdev->dev,
+					"Regulator %d enable failed: %d\n",
+					id, ret);
+				goto scrub;
+			}
+			ret = as3722_extreg_init(as3722_regs, id,
+					reg_config->ext_control);
+			if (ret < 0) {
+				dev_err(&pdev->dev,
+					"AS3722 ext control failed: %d", ret);
+				goto scrub;
+			}
+		}
+	}
+	return 0;
+
+scrub:
+	while (--id > 0)
+		regulator_unregister(as3722_regs->rdevs[id]);
+	return ret;
+}
+
+static int as3722_regulator_remove(struct platform_device *pdev)
+{
+	struct as3722_regulators *as3722_regs = platform_get_drvdata(pdev);
+	int id;
+
+	for (id = 0; id < AS3722_REGULATOR_ID_MAX; id++) {
+		if (as3722_regs->rdevs[id])
+			regulator_unregister(as3722_regs->rdevs[id]);
+	}
+	return 0;
+}
+
+static const struct of_device_id of_as3722_regulator_match[] = {
+	{ .compatible = "ams,as3722-regulator", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, of_as3722_regulator_match);
+
+static struct platform_driver as3722_regulator_driver = {
+	.driver = {
+		.name = "as3722-regulator",
+		.owner = THIS_MODULE,
+		.of_match_table = of_as3722_regulator_match,
+	},
+	.probe = as3722_regulator_probe,
+	.remove = as3722_regulator_remove,
+};
+
+static int __init as3722_regulator_init(void)
+{
+	return platform_driver_register(&as3722_regulator_driver);
+}
+subsys_initcall(as3722_regulator_init);
+
+static void __exit as3722_regulator_exit(void)
+{
+	platform_driver_unregister(&as3722_regulator_driver);
+}
+module_exit(as3722_regulator_exit);
+
+MODULE_ALIAS("platform:as3722-regulator");
+MODULE_DESCRIPTION("AS3722 regulator driver");
+MODULE_AUTHOR("Florian Lobmaier <florian.lobmaier@ams.com>");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_LICENSE("GPL");