Merge tag 'regulator-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "There's one API update here, a new API factoring out a common pattern
  for reference voltage supplies. These are supplies used as a reference
  by analogue circuits where the consumer requests and enables the
  supply, reads the voltage to calibrate the user and then never touches
  it again. This is factored out into a single operation which just
  returns the voltage and uses devm_ to manage the request and enable
  portion.

  Otherwise this has been a very quiet release, we've got some new
  device support, some small fixes, housekeeping and cleanup work but
  nothing substantial.

  There's also some non-regulator changes in here, a number of users for
  the new reference voltage API were merged along with it and some MFD
  changes were pulled in as dependencies for new driver work.

  Highlights:

   - Add a new API for single operation handling of reference voltages

   - Support for Allwinner AXP717 and D1, and NXP PCA9561A"

* tag 'regulator-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (33 commits)
  regulator: sun20i: Add Allwinner D1 LDOs driver
  regulator: dt-bindings: Add Allwinner D1 system LDOs
  regulator: Mention regulator id in error message about dummy supplies
  staging: iio: impedance-analyzer: ad5933: Use devm_regulator_get_enable_read_voltage()
  iio: frequency: admv1013: Use devm_regulator_get_enable_read_voltage()
  iio: addac: ad74115: Use devm_regulator_get_enable_read_voltage()
  hwmon: (adc128d818) simplify final return in probe
  regulator: devres: fix devm_regulator_get_enable_read_voltage() return
  hwmon: (da9052) Use devm_regulator_get_enable_read_voltage()
  hwmon: (adc128d818) Use devm_regulator_get_enable_read_voltage()
  regulator: devres: add API for reference voltage supplies
  regulator: rtq2208: Fix LDO discharge register and add vsel setting
  regulator: dt-bindings: fixed-regulator: Add a preferred node name
  regulator: axp20x: add support for the AXP717
  mfd: axp20x: Add support for AXP717 PMIC
  dt-bindings: mfd: x-powers,axp152: Document AXP717
  regulator: axp20x: fix typo-ed identifier
  dt-bindings: regulator: qcom,usb-vbus-regulator: Add PM7250B compatible
  regulator: pca9450: add pca9451a support
  regulator: dt-bindings: pca9450: add pca9451a support
  ...

28 files changed, 729 insertions, 210 deletions

diff --git a/drivers/hwmon/adc128d818.c b/drivers/hwmon/adc128d818.c
index 46e3c8c50765..321a61977396 100644
--- a/drivers/hwmon/adc128d818.c
+++ b/drivers/hwmon/adc128d818.c
@@ -58,7 +58,6 @@ static const u8 num_inputs[] = { 7, 8, 4, 6 };
 
 struct adc128_data {
 	struct i2c_client *client;
-	struct regulator *regulator;
 	int vref;		/* Reference voltage in mV */
 	struct mutex update_lock;
 	u8 mode;		/* Operation mode */
@@ -389,7 +388,7 @@ static int adc128_detect(struct i2c_client *client, struct i2c_board_info *info)
 	return 0;
 }
 
-static int adc128_init_client(struct adc128_data *data)
+static int adc128_init_client(struct adc128_data *data, bool external_vref)
 {
 	struct i2c_client *client = data->client;
 	int err;
@@ -408,7 +407,7 @@ static int adc128_init_client(struct adc128_data *data)
 		regval |= data->mode << 1;
 
 	/* If external vref is selected, configure the chip to use it */
-	if (data->regulator)
+	if (external_vref)
 		regval |= 0x01;
 
 	/* Write advanced configuration register */
@@ -430,9 +429,9 @@ static int adc128_init_client(struct adc128_data *data)
 static int adc128_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
-	struct regulator *regulator;
 	struct device *hwmon_dev;
 	struct adc128_data *data;
+	bool external_vref;
 	int err, vref;
 
 	data = devm_kzalloc(dev, sizeof(struct adc128_data), GFP_KERNEL);
@@ -440,20 +439,15 @@ static int adc128_probe(struct i2c_client *client)
 		return -ENOMEM;
 
 	/* vref is optional. If specified, is used as chip reference voltage */
-	regulator = devm_regulator_get_optional(dev, "vref");
-	if (!IS_ERR(regulator)) {
-		data->regulator = regulator;
-		err = regulator_enable(regulator);
-		if (err < 0)
-			return err;
-		vref = regulator_get_voltage(regulator);
-		if (vref < 0) {
-			err = vref;
-			goto error;
-		}
-		data->vref = DIV_ROUND_CLOSEST(vref, 1000);
-	} else {
+	vref = devm_regulator_get_enable_read_voltage(dev, "vref");
+	if (vref == -ENODEV) {
+		external_vref = false;
 		data->vref = 2560;	/* 2.56V, in mV */
+	} else if (vref < 0) {
+		return vref;
+	} else {
+		external_vref = true;
+		data->vref = DIV_ROUND_CLOSEST(vref, 1000);
 	}
 
 	/* Operation mode is optional. If unspecified, keep current mode */
@@ -461,13 +455,12 @@ static int adc128_probe(struct i2c_client *client)
 		if (data->mode > 3) {
 			dev_err(dev, "invalid operation mode %d\n",
 				data->mode);
-			err = -EINVAL;
-			goto error;
+			return -EINVAL;
 		}
 	} else {
 		err = i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV);
 		if (err < 0)
-			goto error;
+			return err;
 		data->mode = (err >> 1) & ADC128_REG_MASK;
 	}
 
@@ -476,31 +469,14 @@ static int adc128_probe(struct i2c_client *client)
 	mutex_init(&data->update_lock);
 
 	/* Initialize the chip */
-	err = adc128_init_client(data);
+	err = adc128_init_client(data, external_vref);
 	if (err < 0)
-		goto error;
+		return err;
 
 	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
 							   data, adc128_groups);
-	if (IS_ERR(hwmon_dev)) {
-		err = PTR_ERR(hwmon_dev);
-		goto error;
-	}
-
-	return 0;
-
-error:
-	if (data->regulator)
-		regulator_disable(data->regulator);
-	return err;
-}
-
-static void adc128_remove(struct i2c_client *client)
-{
-	struct adc128_data *data = i2c_get_clientdata(client);
 
-	if (data->regulator)
-		regulator_disable(data->regulator);
+	return PTR_ERR_OR_ZERO(hwmon_dev);
 }
 
 static const struct i2c_device_id adc128_id[] = {
@@ -522,7 +498,6 @@ static struct i2c_driver adc128_driver = {
 		.of_match_table = of_match_ptr(adc128_of_match),
 	},
 	.probe		= adc128_probe,
-	.remove		= adc128_remove,
 	.id_table	= adc128_id,
 	.detect		= adc128_detect,
 	.address_list	= normal_i2c,
diff --git a/drivers/hwmon/da9052-hwmon.c b/drivers/hwmon/da9052-hwmon.c
index 2bd7ae8100d7..7fb0c57dfef5 100644
--- a/drivers/hwmon/da9052-hwmon.c
+++ b/drivers/hwmon/da9052-hwmon.c
@@ -26,7 +26,6 @@ struct da9052_hwmon {
 	struct mutex		hwmon_lock;
 	bool			tsi_as_adc;
 	int			tsiref_mv;
-	struct regulator	*tsiref;
 	struct completion	tsidone;
 };
 
@@ -397,7 +396,7 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct da9052_hwmon *hwmon;
 	struct device *hwmon_dev;
-	int err;
+	int err, tsiref_uv;
 
 	hwmon = devm_kzalloc(dev, sizeof(struct da9052_hwmon), GFP_KERNEL);
 	if (!hwmon)
@@ -414,32 +413,20 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 		device_property_read_bool(pdev->dev.parent, "dlg,tsi-as-adc");
 
 	if (hwmon->tsi_as_adc) {
-		hwmon->tsiref = devm_regulator_get(pdev->dev.parent, "tsiref");
-		if (IS_ERR(hwmon->tsiref)) {
-			err = PTR_ERR(hwmon->tsiref);
-			dev_err(&pdev->dev, "failed to get tsiref: %d", err);
-			return err;
-		}
-
-		err = regulator_enable(hwmon->tsiref);
-		if (err)
-			return err;
-
-		hwmon->tsiref_mv = regulator_get_voltage(hwmon->tsiref);
-		if (hwmon->tsiref_mv < 0) {
-			err = hwmon->tsiref_mv;
-			goto exit_regulator;
-		}
+		tsiref_uv = devm_regulator_get_enable_read_voltage(dev->parent,
+								   "tsiref");
+		if (tsiref_uv < 0)
+			return dev_err_probe(dev, tsiref_uv,
+					     "failed to get tsiref voltage\n");
 
 		/* convert from microvolt (DT) to millivolt (hwmon) */
-		hwmon->tsiref_mv /= 1000;
+		hwmon->tsiref_mv = tsiref_uv / 1000;
 
 		/* TSIREF limits from datasheet */
 		if (hwmon->tsiref_mv < 1800 || hwmon->tsiref_mv > 2600) {
 			dev_err(hwmon->da9052->dev, "invalid TSIREF voltage: %d",
 				hwmon->tsiref_mv);
-			err = -ENXIO;
-			goto exit_regulator;
+			return -ENXIO;
 		}
 
 		/* disable touchscreen features */
@@ -456,7 +443,7 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 		if (err) {
 			dev_err(&pdev->dev, "Failed to register TSIRDY IRQ: %d",
 				err);
-			goto exit_regulator;
+			return err;
 		}
 	}
 
@@ -472,9 +459,6 @@ static int da9052_hwmon_probe(struct platform_device *pdev)
 exit_irq:
 	if (hwmon->tsi_as_adc)
 		da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);
-exit_regulator:
-	if (hwmon->tsiref)
-		regulator_disable(hwmon->tsiref);
 
 	return err;
 }
@@ -483,10 +467,8 @@ static void da9052_hwmon_remove(struct platform_device *pdev)
 {
 	struct da9052_hwmon *hwmon = platform_get_drvdata(pdev);
 
-	if (hwmon->tsi_as_adc) {
+	if (hwmon->tsi_as_adc)
 		da9052_free_irq(hwmon->da9052, DA9052_IRQ_TSIREADY, hwmon);
-		regulator_disable(hwmon->tsiref);
-	}
 }
 
 static struct platform_driver da9052_hwmon_driver = {
diff --git a/drivers/iio/addac/ad74115.c b/drivers/iio/addac/ad74115.c
index e6bc5eb3788d..12dc43d487b4 100644
--- a/drivers/iio/addac/ad74115.c
+++ b/drivers/iio/addac/ad74115.c
@@ -199,7 +199,6 @@ struct ad74115_state {
 	struct spi_device		*spi;
 	struct regmap			*regmap;
 	struct iio_trigger		*trig;
-	struct regulator		*avdd;
 
 	/*
 	 * Synchronize consecutive operations when doing a one-shot
@@ -1672,13 +1671,9 @@ static int ad74115_setup(struct iio_dev *indio_dev)
 	if (ret)
 		return ret;
 
-	if (val == AD74115_DIN_THRESHOLD_MODE_AVDD) {
-		ret = regulator_get_voltage(st->avdd);
-		if (ret < 0)
-			return ret;
-
-		st->avdd_mv = ret / 1000;
-	}
+	if (val == AD74115_DIN_THRESHOLD_MODE_AVDD && !st->avdd_mv)
+		return dev_err_probe(dev, -EINVAL,
+				     "AVDD voltage is required for digital input threshold mode AVDD\n");
 
 	st->din_threshold_mode = val;
 
@@ -1788,11 +1783,6 @@ static int ad74115_reset(struct ad74115_state *st)
 	return 0;
 }
 
-static void ad74115_regulator_disable(void *data)
-{
-	regulator_disable(data);
-}
-
 static int ad74115_setup_trigger(struct iio_dev *indio_dev)
 {
 	struct ad74115_state *st = iio_priv(indio_dev);
@@ -1855,20 +1845,20 @@ static int ad74115_probe(struct spi_device *spi)
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ad74115_info;
 
-	st->avdd = devm_regulator_get(dev, "avdd");
-	if (IS_ERR(st->avdd))
-		return PTR_ERR(st->avdd);
-
-	ret = regulator_enable(st->avdd);
-	if (ret) {
-		dev_err(dev, "Failed to enable avdd regulator\n");
-		return ret;
+	ret = devm_regulator_get_enable_read_voltage(dev, "avdd");
+	if (ret < 0) {
+		/*
+		 * Since this is both a power supply and only optionally a
+		 * reference voltage, make sure to enable it even when the
+		 * voltage is not available.
+		 */
+		ret = devm_regulator_get_enable(dev, "avdd");
+		if (ret)
+			return dev_err_probe(dev, ret, "failed to enable avdd\n");
+	} else {
+		st->avdd_mv = ret / 1000;
 	}
 
-	ret = devm_add_action_or_reset(dev, ad74115_regulator_disable, st->avdd);
-	if (ret)
-		return ret;
-
 	ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(regulator_names),
 					     regulator_names);
 	if (ret)
diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c
index 92923074f930..c0cd5d9844fe 100644
--- a/drivers/iio/frequency/admv1013.c
+++ b/drivers/iio/frequency/admv1013.c
@@ -95,7 +95,6 @@ struct admv1013_state {
 	struct clk		*clkin;
 	/* Protect against concurrent accesses to the device and to data */
 	struct mutex		lock;
-	struct regulator	*reg;
 	struct notifier_block	nb;
 	unsigned int		input_mode;
 	unsigned int		quad_se_mode;
@@ -342,14 +341,9 @@ static int admv1013_update_quad_filters(struct admv1013_state *st)
 					FIELD_PREP(ADMV1013_QUAD_FILTERS_MSK, filt_raw));
 }
 
-static int admv1013_update_mixer_vgate(struct admv1013_state *st)
+static int admv1013_update_mixer_vgate(struct admv1013_state *st, int vcm)
 {
 	unsigned int mixer_vgate;
-	int vcm;
-
-	vcm = regulator_get_voltage(st->reg);
-	if (vcm < 0)
-		return vcm;
 
 	if (vcm <= 1800000)
 		mixer_vgate = (2389 * vcm / 1000000 + 8100) / 100;
@@ -443,7 +437,7 @@ static const struct iio_chan_spec admv1013_channels[] = {
 	ADMV1013_CHAN_CALIB(1, Q),
 };
 
-static int admv1013_init(struct admv1013_state *st)
+static int admv1013_init(struct admv1013_state *st, int vcm_uv)
 {
 	int ret;
 	unsigned int data;
@@ -483,7 +477,7 @@ static int admv1013_init(struct admv1013_state *st)
 	if (ret)
 		return ret;
 
-	ret = admv1013_update_mixer_vgate(st);
+	ret = admv1013_update_mixer_vgate(st, vcm_uv);
 	if (ret)
 		return ret;
 
@@ -498,11 +492,6 @@ static int admv1013_init(struct admv1013_state *st)
 					  st->input_mode);
 }
 
-static void admv1013_reg_disable(void *data)
-{
-	regulator_disable(data);
-}
-
 static void admv1013_powerdown(void *data)
 {
 	unsigned int enable_reg, enable_reg_msk;
@@ -557,11 +546,6 @@ static int admv1013_properties_parse(struct admv1013_state *st)
 	else
 		return -EINVAL;
 
-	st->reg = devm_regulator_get(&spi->dev, "vcm");
-	if (IS_ERR(st->reg))
-		return dev_err_probe(&spi->dev, PTR_ERR(st->reg),
-				     "failed to get the common-mode voltage\n");
-
 	ret = devm_regulator_bulk_get_enable(&st->spi->dev,
 					     ARRAY_SIZE(admv1013_vcc_regs),
 					     admv1013_vcc_regs);
@@ -578,7 +562,7 @@ static int admv1013_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
 	struct admv1013_state *st;
-	int ret;
+	int ret, vcm_uv;
 
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
 	if (!indio_dev)
@@ -597,16 +581,12 @@ static int admv1013_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = regulator_enable(st->reg);
-	if (ret) {
-		dev_err(&spi->dev, "Failed to enable specified Common-Mode Voltage!\n");
-		return ret;
-	}
+	ret = devm_regulator_get_enable_read_voltage(&spi->dev, "vcm");
+	if (ret < 0)
+		return dev_err_probe(&spi->dev, ret,
+				     "failed to get the common-mode voltage\n");
 
-	ret = devm_add_action_or_reset(&spi->dev, admv1013_reg_disable,
-				       st->reg);
-	if (ret)
-		return ret;
+	vcm_uv = ret;
 
 	st->clkin = devm_clk_get_enabled(&spi->dev, "lo_in");
 	if (IS_ERR(st->clkin))
@@ -620,7 +600,7 @@ static int admv1013_probe(struct spi_device *spi)
 
 	mutex_init(&st->lock);
 
-	ret = admv1013_init(st);
+	ret = admv1013_init(st, vcm_uv);
 	if (ret) {
 		dev_err(&spi->dev, "admv1013 init failed\n");
 		return ret;
diff --git a/drivers/mfd/axp20x-i2c.c b/drivers/mfd/axp20x-i2c.c
index 68d3560cfe4a..b8e7ac89f697 100644
--- a/drivers/mfd/axp20x-i2c.c
+++ b/drivers/mfd/axp20x-i2c.c
@@ -65,6 +65,7 @@ static const struct of_device_id axp20x_i2c_of_match[] = {
 	{ .compatible = "x-powers,axp221", .data = (void *)AXP221_ID },
 	{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
 	{ .compatible = "x-powers,axp313a", .data = (void *)AXP313A_ID },
+	{ .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
 	{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
 	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
 	{ .compatible = "x-powers,axp15060", .data = (void *)AXP15060_ID },
@@ -81,6 +82,7 @@ static const struct i2c_device_id axp20x_i2c_id[] = {
 	{ "axp221", 0 },
 	{ "axp223", 0 },
 	{ "axp313a", 0 },
+	{ "axp717", 0 },
 	{ "axp803", 0 },
 	{ "axp806", 0 },
 	{ "axp15060", 0 },
diff --git a/drivers/mfd/axp20x-rsb.c b/drivers/mfd/axp20x-rsb.c
index 214bc0d84d44..059656f2a1bd 100644
--- a/drivers/mfd/axp20x-rsb.c
+++ b/drivers/mfd/axp20x-rsb.c
@@ -58,6 +58,7 @@ static void axp20x_rsb_remove(struct sunxi_rsb_device *rdev)
 
 static const struct of_device_id axp20x_rsb_of_match[] = {
 	{ .compatible = "x-powers,axp223", .data = (void *)AXP223_ID },
+	{ .compatible = "x-powers,axp717", .data = (void *)AXP717_ID },
 	{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
 	{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
 	{ .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index d8daa593ebd5..48ce6ea693ce 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -42,6 +42,7 @@ static const char * const axp20x_model_names[] = {
 	"AXP223",
 	"AXP288",
 	"AXP313a",
+	"AXP717",
 	"AXP803",
 	"AXP806",
 	"AXP809",
@@ -207,6 +208,25 @@ static const struct regmap_access_table axp313a_volatile_table = {
 	.n_yes_ranges = ARRAY_SIZE(axp313a_volatile_ranges),
 };
 
+static const struct regmap_range axp717_writeable_ranges[] = {
+	regmap_reg_range(AXP717_IRQ0_EN, AXP717_IRQ4_EN),
+	regmap_reg_range(AXP717_DCDC_OUTPUT_CONTROL, AXP717_CPUSLDO_CONTROL),
+};
+
+static const struct regmap_range axp717_volatile_ranges[] = {
+	regmap_reg_range(AXP717_IRQ0_STATE, AXP717_IRQ4_STATE),
+};
+
+static const struct regmap_access_table axp717_writeable_table = {
+	.yes_ranges = axp717_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(axp717_writeable_ranges),
+};
+
+static const struct regmap_access_table axp717_volatile_table = {
+	.yes_ranges = axp717_volatile_ranges,
+	.n_yes_ranges = ARRAY_SIZE(axp717_volatile_ranges),
+};
+
 static const struct regmap_range axp806_volatile_ranges[] = {
 	regmap_reg_range(AXP20X_IRQ1_STATE, AXP20X_IRQ2_STATE),
 };
@@ -317,6 +337,11 @@ static const struct resource axp313a_pek_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP313A_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
 };
 
+static const struct resource axp717_pek_resources[] = {
+	DEFINE_RES_IRQ_NAMED(AXP717_IRQ_PEK_RIS_EDGE, "PEK_DBR"),
+	DEFINE_RES_IRQ_NAMED(AXP717_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
+};
+
 static const struct resource axp803_pek_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP803_IRQ_PEK_RIS_EDGE, "PEK_DBR"),
 	DEFINE_RES_IRQ_NAMED(AXP803_IRQ_PEK_FAL_EDGE, "PEK_DBF"),
@@ -391,6 +416,15 @@ static const struct regmap_config axp313a_regmap_config = {
 	.cache_type = REGCACHE_MAPLE,
 };
 
+static const struct regmap_config axp717_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.wr_table = &axp717_writeable_table,
+	.volatile_table = &axp717_volatile_table,
+	.max_register = AXP717_CPUSLDO_CONTROL,
+	.cache_type = REGCACHE_RBTREE,
+};
+
 static const struct regmap_config axp806_regmap_config = {
 	.reg_bits	= 8,
 	.val_bits	= 8,
@@ -589,6 +623,40 @@ static const struct regmap_irq axp313a_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP313A, DIE_TEMP_HIGH,		0, 0),
 };
 
+static const struct regmap_irq axp717_regmap_irqs[] = {
+	INIT_REGMAP_IRQ(AXP717, SOC_DROP_LVL2,		0, 7),
+	INIT_REGMAP_IRQ(AXP717, SOC_DROP_LVL1,		0, 6),
+	INIT_REGMAP_IRQ(AXP717, GAUGE_NEW_SOC,		0, 4),
+	INIT_REGMAP_IRQ(AXP717, BOOST_OVER_V,		0, 2),
+	INIT_REGMAP_IRQ(AXP717, VBUS_OVER_V,		0, 1),
+	INIT_REGMAP_IRQ(AXP717, VBUS_FAULT,		0, 0),
+	INIT_REGMAP_IRQ(AXP717, VBUS_PLUGIN,		1, 7),
+	INIT_REGMAP_IRQ(AXP717, VBUS_REMOVAL,		1, 6),
+	INIT_REGMAP_IRQ(AXP717, BATT_PLUGIN,		1, 5),
+	INIT_REGMAP_IRQ(AXP717, BATT_REMOVAL,		1, 4),
+	INIT_REGMAP_IRQ(AXP717, PEK_SHORT,		1, 3),
+	INIT_REGMAP_IRQ(AXP717, PEK_LONG,		1, 2),
+	INIT_REGMAP_IRQ(AXP717, PEK_FAL_EDGE,		1, 1),
+	INIT_REGMAP_IRQ(AXP717, PEK_RIS_EDGE,		1, 0),
+	INIT_REGMAP_IRQ(AXP717, WDOG_EXPIRE,		2, 7),
+	INIT_REGMAP_IRQ(AXP717, LDO_OVER_CURR,		2, 6),
+	INIT_REGMAP_IRQ(AXP717, BATT_OVER_CURR,		2, 5),
+	INIT_REGMAP_IRQ(AXP717, CHARG_DONE,		2, 4),
+	INIT_REGMAP_IRQ(AXP717, CHARG,			2, 3),
+	INIT_REGMAP_IRQ(AXP717, DIE_TEMP_HIGH,		2, 2),
+	INIT_REGMAP_IRQ(AXP717, CHARG_TIMER,		2, 1),
+	INIT_REGMAP_IRQ(AXP717, BATT_OVER_V,		2, 0),
+	INIT_REGMAP_IRQ(AXP717, BC_USB_DONE,		3, 7),
+	INIT_REGMAP_IRQ(AXP717, BC_USB_CHNG,		3, 6),
+	INIT_REGMAP_IRQ(AXP717, BATT_QUIT_TEMP_HIGH,	3, 4),
+	INIT_REGMAP_IRQ(AXP717, BATT_CHG_TEMP_HIGH,	3, 3),
+	INIT_REGMAP_IRQ(AXP717, BATT_CHG_TEMP_LOW,	3, 2),
+	INIT_REGMAP_IRQ(AXP717, BATT_ACT_TEMP_HIGH,	3, 1),
+	INIT_REGMAP_IRQ(AXP717, BATT_ACT_TEMP_LOW,	3, 0),
+	INIT_REGMAP_IRQ(AXP717, TYPEC_REMOVE,		4, 6),
+	INIT_REGMAP_IRQ(AXP717, TYPEC_PLUGIN,		4, 5),
+};
+
 static const struct regmap_irq axp803_regmap_irqs[] = {
 	INIT_REGMAP_IRQ(AXP803, ACIN_OVER_V,		0, 7),
 	INIT_REGMAP_IRQ(AXP803, ACIN_PLUGIN,		0, 6),
@@ -776,6 +844,17 @@ static const struct regmap_irq_chip axp313a_regmap_irq_chip = {
 	.num_regs		= 1,
 };
 
+static const struct regmap_irq_chip axp717_regmap_irq_chip = {
+	.name			= "axp717_irq_chip",
+	.status_base		= AXP717_IRQ0_STATE,
+	.ack_base		= AXP717_IRQ0_STATE,
+	.unmask_base		= AXP717_IRQ0_EN,
+	.init_ack_masked	= true,
+	.irqs			= axp717_regmap_irqs,
+	.num_irqs		= ARRAY_SIZE(axp717_regmap_irqs),
+	.num_regs		= 5,
+};
+
 static const struct regmap_irq_chip axp803_regmap_irq_chip = {
 	.name			= "axp803",
 	.status_base		= AXP20X_IRQ1_STATE,
@@ -941,6 +1020,11 @@ static struct mfd_cell axp313a_cells[] = {
 	MFD_CELL_RES("axp313a-pek", axp313a_pek_resources),
 };
 
+static struct mfd_cell axp717_cells[] = {
+	MFD_CELL_NAME("axp20x-regulator"),
+	MFD_CELL_RES("axp20x-pek", axp717_pek_resources),
+};
+
 static const struct resource axp288_adc_resources[] = {
 	DEFINE_RES_IRQ_NAMED(AXP288_IRQ_GPADC, "GPADC"),
 };
@@ -1181,6 +1265,12 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
 		axp20x->regmap_cfg = &axp313a_regmap_config;
 		axp20x->regmap_irq_chip = &axp313a_regmap_irq_chip;
 		break;
+	case AXP717_ID:
+		axp20x->nr_cells = ARRAY_SIZE(axp717_cells);
+		axp20x->cells = axp717_cells;
+		axp20x->regmap_cfg = &axp717_regmap_config;
+		axp20x->regmap_irq_chip = &axp717_regmap_irq_chip;
+		break;
 	case AXP803_ID:
 		axp20x->nr_cells = ARRAY_SIZE(axp803_cells);
 		axp20x->cells = axp803_cells;
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 7db0a29b5b8d..acdb02a4ac0c 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1415,6 +1415,14 @@ config REGULATOR_STW481X_VMMC
 	  This driver supports the internal VMMC regulator in the STw481x
 	  PMIC chips.
 
+config REGULATOR_SUN20I
+	tristate "Allwinner D1 internal LDOs"
+	depends on ARCH_SUNXI || COMPILE_TEST
+	select MFD_SYSCON
+	default ARCH_SUNXI
+	help
+	  This driver supports the internal LDOs in the Allwinner D1 SoC.
+
 config REGULATOR_SY7636A
 	tristate "Silergy SY7636A voltage regulator"
 	depends on MFD_SY7636A
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 46fb569e6be8..ba15fa5f30ad 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -163,6 +163,7 @@ obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
 obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o
 obj-$(CONFIG_REGULATOR_STPMIC1) += stpmic1_regulator.o
 obj-$(CONFIG_REGULATOR_STW481X_VMMC) += stw481x-vmmc.o
+obj-$(CONFIG_REGULATOR_SUN20I) += sun20i-regulator.o
 obj-$(CONFIG_REGULATOR_SY7636A) += sy7636a-regulator.o
 obj-$(CONFIG_REGULATOR_SY8106A) += sy8106a-regulator.o
 obj-$(CONFIG_REGULATOR_SY8824X) += sy8824x.o
diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
index c657820b0bbb..34fcdd82b2ea 100644
--- a/drivers/regulator/axp20x-regulator.c
+++ b/drivers/regulator/axp20x-regulator.c
@@ -138,6 +138,12 @@
 #define AXP313A_DCDC_V_OUT_MASK		GENMASK(6, 0)
 #define AXP313A_LDO_V_OUT_MASK		GENMASK(4, 0)
 
+#define AXP717_DCDC1_NUM_VOLTAGES	88
+#define AXP717_DCDC2_NUM_VOLTAGES	107
+#define AXP717_DCDC3_NUM_VOLTAGES	104
+#define AXP717_DCDC_V_OUT_MASK		GENMASK(6, 0)
+#define AXP717_LDO_V_OUT_MASK		GENMASK(4, 0)
+
 #define AXP803_PWR_OUT_DCDC1_MASK	BIT_MASK(0)
 #define AXP803_PWR_OUT_DCDC2_MASK	BIT_MASK(1)
 #define AXP803_PWR_OUT_DCDC3_MASK	BIT_MASK(2)
@@ -733,25 +739,98 @@ static const struct linear_range axp313a_dcdc3_ranges[] = {
 static const struct regulator_desc axp313a_regulators[] = {
 	AXP_DESC_RANGES(AXP313A, DCDC1, "dcdc1", "vin1",
 			axp313a_dcdc1_ranges, AXP313A_DCDC1_NUM_VOLTAGES,
-			AXP313A_DCDC1_CONRTOL, AXP313A_DCDC_V_OUT_MASK,
+			AXP313A_DCDC1_CONTROL, AXP313A_DCDC_V_OUT_MASK,
 			AXP313A_OUTPUT_CONTROL, BIT(0)),
 	AXP_DESC_RANGES(AXP313A, DCDC2, "dcdc2", "vin2",
 			axp313a_dcdc2_ranges, AXP313A_DCDC23_NUM_VOLTAGES,
-			AXP313A_DCDC2_CONRTOL, AXP313A_DCDC_V_OUT_MASK,
+			AXP313A_DCDC2_CONTROL, AXP313A_DCDC_V_OUT_MASK,
 			AXP313A_OUTPUT_CONTROL, BIT(1)),
 	AXP_DESC_RANGES(AXP313A, DCDC3, "dcdc3", "vin3",
 			axp313a_dcdc3_ranges, AXP313A_DCDC23_NUM_VOLTAGES,
-			AXP313A_DCDC3_CONRTOL, AXP313A_DCDC_V_OUT_MASK,
+			AXP313A_DCDC3_CONTROL, AXP313A_DCDC_V_OUT_MASK,
 			AXP313A_OUTPUT_CONTROL, BIT(2)),
 	AXP_DESC(AXP313A, ALDO1, "aldo1", "vin1", 500, 3500, 100,
-		 AXP313A_ALDO1_CONRTOL, AXP313A_LDO_V_OUT_MASK,
+		 AXP313A_ALDO1_CONTROL, AXP313A_LDO_V_OUT_MASK,
 		 AXP313A_OUTPUT_CONTROL, BIT(3)),
 	AXP_DESC(AXP313A, DLDO1, "dldo1", "vin1", 500, 3500, 100,
-		 AXP313A_DLDO1_CONRTOL, AXP313A_LDO_V_OUT_MASK,
+		 AXP313A_DLDO1_CONTROL, AXP313A_LDO_V_OUT_MASK,
 		 AXP313A_OUTPUT_CONTROL, BIT(4)),
 	AXP_DESC_FIXED(AXP313A, RTC_LDO, "rtc-ldo", "vin1", 1800),
 };
 
+static const struct linear_range axp717_dcdc1_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000,   0, 70, 10000),
+	REGULATOR_LINEAR_RANGE(1220000, 71, 87, 20000),
+};
+
+static const struct linear_range axp717_dcdc2_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000,   0,  70,  10000),
+	REGULATOR_LINEAR_RANGE(1220000, 71,  87,  20000),
+	REGULATOR_LINEAR_RANGE(1600000, 88, 107, 100000),
+};
+
+static const struct linear_range axp717_dcdc3_ranges[] = {
+	REGULATOR_LINEAR_RANGE(500000,   0,  70, 10000),
+	REGULATOR_LINEAR_RANGE(1220000, 71, 102, 20000),
+};
+
+static const struct regulator_desc axp717_regulators[] = {
+	AXP_DESC_RANGES(AXP717, DCDC1, "dcdc1", "vin1",
+			axp717_dcdc1_ranges, AXP717_DCDC1_NUM_VOLTAGES,
+			AXP717_DCDC1_CONTROL, AXP717_DCDC_V_OUT_MASK,
+			AXP717_DCDC_OUTPUT_CONTROL, BIT(0)),
+	AXP_DESC_RANGES(AXP717, DCDC2, "dcdc2", "vin2",
+			axp717_dcdc2_ranges, AXP717_DCDC2_NUM_VOLTAGES,
+			AXP717_DCDC2_CONTROL, AXP717_DCDC_V_OUT_MASK,
+			AXP717_DCDC_OUTPUT_CONTROL, BIT(1)),
+	AXP_DESC_RANGES(AXP717, DCDC3, "dcdc3", "vin3",
+			axp717_dcdc3_ranges, AXP717_DCDC3_NUM_VOLTAGES,
+			AXP717_DCDC3_CONTROL, AXP717_DCDC_V_OUT_MASK,
+			AXP717_DCDC_OUTPUT_CONTROL, BIT(2)),
+	AXP_DESC(AXP717, DCDC4, "dcdc4", "vin4", 1000, 3700, 100,
+		 AXP717_DCDC4_CONTROL, AXP717_DCDC_V_OUT_MASK,
+		 AXP717_DCDC_OUTPUT_CONTROL, BIT(3)),
+	AXP_DESC(AXP717, ALDO1, "aldo1", "vin1", 500, 3500, 100,
+		 AXP717_ALDO1_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(0)),
+	AXP_DESC(AXP717, ALDO2, "aldo2", "vin1", 500, 3500, 100,
+		 AXP717_ALDO2_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(1)),
+	AXP_DESC(AXP717, ALDO3, "aldo3", "vin1", 500, 3500, 100,
+		 AXP717_ALDO3_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(2)),
+	AXP_DESC(AXP717, ALDO4, "aldo4", "vin1", 500, 3500, 100,
+		 AXP717_ALDO4_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(3)),
+	AXP_DESC(AXP717, BLDO1, "bldo1", "vin1", 500, 3500, 100,
+		 AXP717_BLDO1_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(4)),
+	AXP_DESC(AXP717, BLDO2, "bldo2", "vin1", 500, 3500, 100,
+		 AXP717_BLDO2_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(5)),
+	AXP_DESC(AXP717, BLDO3, "bldo3", "vin1", 500, 3500, 100,
+		 AXP717_BLDO3_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(6)),
+	AXP_DESC(AXP717, BLDO4, "bldo4", "vin1", 500, 3500, 100,
+		 AXP717_BLDO4_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO0_OUTPUT_CONTROL, BIT(7)),
+	AXP_DESC(AXP717, CLDO1, "cldo1", "vin1", 500, 3500, 100,
+		 AXP717_CLDO1_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(0)),
+	AXP_DESC(AXP717, CLDO2, "cldo2", "vin1", 500, 3500, 100,
+		 AXP717_CLDO2_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(1)),
+	AXP_DESC(AXP717, CLDO3, "cldo3", "vin1", 500, 3500, 100,
+		 AXP717_CLDO3_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(2)),
+	AXP_DESC(AXP717, CLDO4, "cldo4", "vin1", 500, 3500, 100,
+		 AXP717_CLDO4_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(3)),
+	AXP_DESC(AXP717, CPUSLDO, "cpusldo", "vin1", 500, 1400, 50,
+		 AXP717_CPUSLDO_CONTROL, AXP717_LDO_V_OUT_MASK,
+		 AXP717_LDO1_OUTPUT_CONTROL, BIT(4)),
+};
+
 /* DCDC ranges shared with AXP813 */
 static const struct linear_range axp803_dcdc234_ranges[] = {
 	REGULATOR_LINEAR_RANGE(500000,
@@ -1253,6 +1332,7 @@ static int axp20x_set_dcdc_freq(struct platform_device *pdev, u32 dcdcfreq)
 		step = 150;
 		break;
 	case AXP313A_ID:
+	case AXP717_ID:
 	case AXP15060_ID:
 		/* The DCDC PWM frequency seems to be fixed to 3 MHz. */
 		if (dcdcfreq != 0) {
@@ -1479,6 +1559,10 @@ static int axp20x_regulator_probe(struct platform_device *pdev)
 		regulators = axp313a_regulators;
 		nregulators = AXP313A_REG_ID_MAX;
 		break;
+	case AXP717_ID:
+		regulators = axp717_regulators;
+		nregulators = AXP717_REG_ID_MAX;
+		break;
 	case AXP803_ID:
 		regulators = axp803_regulators;
 		nregulators = AXP803_REG_ID_MAX;
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 2c33653ffdea..5794f4e9dd52 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -2200,7 +2200,7 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 
 		if (!have_full_constraints()) {
 			dev_warn(dev,
-				 "incomplete constraints, dummy supplies not allowed\n");
+				 "incomplete constraints, dummy supplies not allowed (id=%s)\n", id);
 			return ERR_PTR(-ENODEV);
 		}
 
@@ -2218,7 +2218,7 @@ struct regulator *_regulator_get(struct device *dev, const char *id,
 
 		case EXCLUSIVE_GET:
 			dev_warn(dev,
-				 "dummy supplies not allowed for exclusive requests\n");
+				 "dummy supplies not allowed for exclusive requests (id=%s)\n", id);
 			fallthrough;
 
 		default:
diff --git a/drivers/regulator/da9121-regulator.c b/drivers/regulator/da9121-regulator.c
index 5ee76b533576..96257551bb12 100644
--- a/drivers/regulator/da9121-regulator.c
+++ b/drivers/regulator/da9121-regulator.c
@@ -872,7 +872,7 @@ static struct regmap_config da9121_1ch_regmap_config = {
 	.rd_table = &da9121_1ch_readable_table,
 	.wr_table = &da9121_1ch_writeable_table,
 	.volatile_table = &da9121_volatile_table,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 /* DA9121 regmap config for 2 channel variants */
@@ -883,7 +883,7 @@ static struct regmap_config da9121_2ch_regmap_config = {
 	.rd_table = &da9121_2ch_readable_table,
 	.wr_table = &da9121_2ch_writeable_table,
 	.volatile_table = &da9121_volatile_table,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static int da9121_check_device_type(struct i2c_client *i2c, struct da9121 *chip)
diff --git a/drivers/regulator/da9211-regulator.c b/drivers/regulator/da9211-regulator.c
index af383ff0fe57..d8b39ea3de0e 100644
--- a/drivers/regulator/da9211-regulator.c
+++ b/drivers/regulator/da9211-regulator.c
@@ -68,7 +68,7 @@ static const struct regmap_config da9211_regmap_config = {
 	.val_bits = 8,
 	.max_register = 5 * 128,
 	.volatile_reg = da9211_volatile_reg,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.ranges = da9211_regmap_range,
 	.num_ranges = ARRAY_SIZE(da9211_regmap_range),
 };
diff --git a/drivers/regulator/devres.c b/drivers/regulator/devres.c
index 90bb0d178885..7111c46e9de1 100644
--- a/drivers/regulator/devres.c
+++ b/drivers/regulator/devres.c
@@ -145,6 +145,65 @@ struct regulator *devm_regulator_get_optional(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(devm_regulator_get_optional);
 
+/**
+ * devm_regulator_get_enable_read_voltage - Resource managed regulator get and
+ *                                          enable that returns the voltage
+ * @dev: device to supply
+ * @id:  supply name or regulator ID.
+ *
+ * Get and enable regulator for duration of the device life-time.
+ * regulator_disable() and regulator_put() are automatically called on driver
+ * detach. See regulator_get_optional(), regulator_enable(), and
+ * regulator_get_voltage() for more information.
+ *
+ * This is a convenience function for supplies that provide a reference voltage
+ * where the consumer driver just needs to know the voltage and keep the
+ * regulator enabled.
+ *
+ * In cases where the supply is not strictly required, callers can check for
+ * -ENODEV error and handle it accordingly.
+ *
+ * Returns: voltage in microvolts on success, or an error code on failure.
+ */
+int devm_regulator_get_enable_read_voltage(struct device *dev, const char *id)
+{
+	struct regulator *r;
+	int ret;
+
+	/*
+	 * Since we need a real voltage, we use devm_regulator_get_optional()
+	 * rather than getting a dummy regulator with devm_regulator_get() and
+	 * then letting regulator_get_voltage() fail with -EINVAL. This way, the
+	 * caller can handle the -ENODEV error code if needed instead of the
+	 * ambiguous -EINVAL.
+	 */
+	r = devm_regulator_get_optional(dev, id);
+	if (IS_ERR(r))
+		return PTR_ERR(r);
+
+	ret = regulator_enable(r);
+	if (ret)
+		goto err_regulator_put;
+
+	ret = devm_add_action_or_reset(dev, regulator_action_disable, r);
+	if (ret)
+		goto err_regulator_put;
+
+	ret = regulator_get_voltage(r);
+	if (ret < 0)
+		goto err_release_action;
+
+	return ret;
+
+err_release_action:
+	devm_release_action(dev, regulator_action_disable, r);
+err_regulator_put:
+	devm_regulator_put(r);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(devm_regulator_get_enable_read_voltage);
+
 static int devm_regulator_match(struct device *dev, void *res, void *data)
 {
 	struct regulator **r = res;
diff --git a/drivers/regulator/isl9305.c b/drivers/regulator/isl9305.c
index 0f7560093091..5a234f25e6bb 100644
--- a/drivers/regulator/isl9305.c
+++ b/drivers/regulator/isl9305.c
@@ -134,7 +134,7 @@ static const struct regmap_config isl9305_regmap = {
 	.val_bits = 8,
 
 	.max_register = ISL9305_MAX_REG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static int isl9305_i2c_probe(struct i2c_client *i2c)
diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index f8bb6828feef..96ca146281d6 100644
--- a/drivers/regulator/max8973-regulator.c
+++ b/drivers/regulator/max8973-regulator.c
@@ -510,7 +510,7 @@ static const struct regmap_config max8973_regmap_config = {
 	.reg_bits		= 8,
 	.val_bits		= 8,
 	.max_register		= MAX8973_CHIPID2,
-	.cache_type		= REGCACHE_RBTREE,
+	.cache_type		= REGCACHE_MAPLE,
 };
 
 static struct max8973_regulator_platform_data *max8973_parse_dt(
diff --git a/drivers/regulator/mt6311-regulator.c b/drivers/regulator/mt6311-regulator.c
index 63a51485f2cc..c00638cd2d1e 100644
--- a/drivers/regulator/mt6311-regulator.c
+++ b/drivers/regulator/mt6311-regulator.c
@@ -20,7 +20,7 @@ static const struct regmap_config mt6311_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = MT6311_FQMTR_CON4,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 /* Default limits measured in millivolts and milliamps */
diff --git a/drivers/regulator/pca9450-regulator.c b/drivers/regulator/pca9450-regulator.c
index 2ab365d2749f..be488c5dff14 100644
--- a/drivers/regulator/pca9450-regulator.c
+++ b/drivers/regulator/pca9450-regulator.c
@@ -53,7 +53,7 @@ static const struct regmap_config pca9450_regmap_config = {
 	.val_bits = 8,
 	.volatile_table = &pca9450_volatile_regs,
 	.max_register = PCA9450_MAX_REGISTER - 1,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 /*
@@ -107,6 +107,14 @@ static const struct linear_range pca9450_dvs_buck_volts[] = {
 };
 
 /*
+ * BUCK1/3
+ * 0.65 to 2.2375V (12.5mV step)
+ */
+static const struct linear_range pca9451a_dvs_buck_volts[] = {
+	REGULATOR_LINEAR_RANGE(650000, 0x00, 0x7F, 12500),
+};
+
+/*
  * BUCK4/5/6
  * 0.6V to 3.4V (25mV step)
  */
@@ -662,6 +670,178 @@ static const struct pca9450_regulator_desc pca9450bc_regulators[] = {
 	},
 };
 
+static const struct pca9450_regulator_desc pca9451a_regulators[] = {
+	{
+		.desc = {
+			.name = "buck1",
+			.of_match = of_match_ptr("BUCK1"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_BUCK1,
+			.ops = &pca9450_dvs_buck_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_BUCK1_VOLTAGE_NUM,
+			.linear_ranges = pca9451a_dvs_buck_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9451a_dvs_buck_volts),
+			.vsel_reg = PCA9450_REG_BUCK1OUT_DVS0,
+			.vsel_mask = BUCK1OUT_DVS0_MASK,
+			.enable_reg = PCA9450_REG_BUCK1CTRL,
+			.enable_mask = BUCK1_ENMODE_MASK,
+			.enable_val = BUCK_ENMODE_ONREQ,
+			.ramp_mask = BUCK1_RAMP_MASK,
+			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
+			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
+			.owner = THIS_MODULE,
+			.of_parse_cb = pca9450_set_dvs_levels,
+		},
+		.dvs = {
+			.run_reg = PCA9450_REG_BUCK1OUT_DVS0,
+			.run_mask = BUCK1OUT_DVS0_MASK,
+			.standby_reg = PCA9450_REG_BUCK1OUT_DVS1,
+			.standby_mask = BUCK1OUT_DVS1_MASK,
+		},
+	},
+	{
+		.desc = {
+			.name = "buck2",
+			.of_match = of_match_ptr("BUCK2"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_BUCK2,
+			.ops = &pca9450_dvs_buck_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_BUCK2_VOLTAGE_NUM,
+			.linear_ranges = pca9450_dvs_buck_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_dvs_buck_volts),
+			.vsel_reg = PCA9450_REG_BUCK2OUT_DVS0,
+			.vsel_mask = BUCK2OUT_DVS0_MASK,
+			.enable_reg = PCA9450_REG_BUCK2CTRL,
+			.enable_mask = BUCK2_ENMODE_MASK,
+			.enable_val = BUCK_ENMODE_ONREQ_STBYREQ,
+			.ramp_mask = BUCK2_RAMP_MASK,
+			.ramp_delay_table = pca9450_dvs_buck_ramp_table,
+			.n_ramp_values = ARRAY_SIZE(pca9450_dvs_buck_ramp_table),
+			.owner = THIS_MODULE,
+			.of_parse_cb = pca9450_set_dvs_levels,
+		},
+		.dvs = {
+			.run_reg = PCA9450_REG_BUCK2OUT_DVS0,
+			.run_mask = BUCK2OUT_DVS0_MASK,
+			.standby_reg = PCA9450_REG_BUCK2OUT_DVS1,
+			.standby_mask = BUCK2OUT_DVS1_MASK,
+		},
+	},
+	{
+		.desc = {
+			.name = "buck4",
+			.of_match = of_match_ptr("BUCK4"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_BUCK4,
+			.ops = &pca9450_buck_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_BUCK4_VOLTAGE_NUM,
+			.linear_ranges = pca9450_buck_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
+			.vsel_reg = PCA9450_REG_BUCK4OUT,
+			.vsel_mask = BUCK4OUT_MASK,
+			.enable_reg = PCA9450_REG_BUCK4CTRL,
+			.enable_mask = BUCK4_ENMODE_MASK,
+			.enable_val = BUCK_ENMODE_ONREQ,
+			.owner = THIS_MODULE,
+		},
+	},
+	{
+		.desc = {
+			.name = "buck5",
+			.of_match = of_match_ptr("BUCK5"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_BUCK5,
+			.ops = &pca9450_buck_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_BUCK5_VOLTAGE_NUM,
+			.linear_ranges = pca9450_buck_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
+			.vsel_reg = PCA9450_REG_BUCK5OUT,
+			.vsel_mask = BUCK5OUT_MASK,
+			.enable_reg = PCA9450_REG_BUCK5CTRL,
+			.enable_mask = BUCK5_ENMODE_MASK,
+			.enable_val = BUCK_ENMODE_ONREQ,
+			.owner = THIS_MODULE,
+		},
+	},
+	{
+		.desc = {
+			.name = "buck6",
+			.of_match = of_match_ptr("BUCK6"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_BUCK6,
+			.ops = &pca9450_buck_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_BUCK6_VOLTAGE_NUM,
+			.linear_ranges = pca9450_buck_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_buck_volts),
+			.vsel_reg = PCA9450_REG_BUCK6OUT,
+			.vsel_mask = BUCK6OUT_MASK,
+			.enable_reg = PCA9450_REG_BUCK6CTRL,
+			.enable_mask = BUCK6_ENMODE_MASK,
+			.enable_val = BUCK_ENMODE_ONREQ,
+			.owner = THIS_MODULE,
+		},
+	},
+	{
+		.desc = {
+			.name = "ldo1",
+			.of_match = of_match_ptr("LDO1"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_LDO1,
+			.ops = &pca9450_ldo_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_LDO1_VOLTAGE_NUM,
+			.linear_ranges = pca9450_ldo1_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo1_volts),
+			.vsel_reg = PCA9450_REG_LDO1CTRL,
+			.vsel_mask = LDO1OUT_MASK,
+			.enable_reg = PCA9450_REG_LDO1CTRL,
+			.enable_mask = LDO1_EN_MASK,
+			.owner = THIS_MODULE,
+		},
+	},
+	{
+		.desc = {
+			.name = "ldo4",
+			.of_match = of_match_ptr("LDO4"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_LDO4,
+			.ops = &pca9450_ldo_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_LDO4_VOLTAGE_NUM,
+			.linear_ranges = pca9450_ldo34_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo34_volts),
+			.vsel_reg = PCA9450_REG_LDO4CTRL,
+			.vsel_mask = LDO4OUT_MASK,
+			.enable_reg = PCA9450_REG_LDO4CTRL,
+			.enable_mask = LDO4_EN_MASK,
+			.owner = THIS_MODULE,
+		},
+	},
+	{
+		.desc = {
+			.name = "ldo5",
+			.of_match = of_match_ptr("LDO5"),
+			.regulators_node = of_match_ptr("regulators"),
+			.id = PCA9450_LDO5,
+			.ops = &pca9450_ldo_regulator_ops,
+			.type = REGULATOR_VOLTAGE,
+			.n_voltages = PCA9450_LDO5_VOLTAGE_NUM,
+			.linear_ranges = pca9450_ldo5_volts,
+			.n_linear_ranges = ARRAY_SIZE(pca9450_ldo5_volts),
+			.vsel_reg = PCA9450_REG_LDO5CTRL_H,
+			.vsel_mask = LDO5HOUT_MASK,
+			.enable_reg = PCA9450_REG_LDO5CTRL_H,
+			.enable_mask = LDO5H_EN_MASK,
+			.owner = THIS_MODULE,
+		},
+	},
+};
+
 static irqreturn_t pca9450_irq_handler(int irq, void *data)
 {
 	struct pca9450 *pca9450 = data;
@@ -729,6 +909,10 @@ static int pca9450_i2c_probe(struct i2c_client *i2c)
 		regulator_desc = pca9450bc_regulators;
 		pca9450->rcnt = ARRAY_SIZE(pca9450bc_regulators);
 		break;
+	case PCA9450_TYPE_PCA9451A:
+		regulator_desc = pca9451a_regulators;
+		pca9450->rcnt = ARRAY_SIZE(pca9451a_regulators);
+		break;
 	default:
 		dev_err(&i2c->dev, "Unknown device type");
 		return -EINVAL;
@@ -755,7 +939,8 @@ static int pca9450_i2c_probe(struct i2c_client *i2c)
 
 	/* Check your board and dts for match the right pmic */
 	if (((device_id >> 4) != 0x1 && type == PCA9450_TYPE_PCA9450A) ||
-	    ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC)) {
+	    ((device_id >> 4) != 0x3 && type == PCA9450_TYPE_PCA9450BC) ||
+	    ((device_id >> 4) != 0x9 && type == PCA9450_TYPE_PCA9451A)) {
 		dev_err(&i2c->dev, "Device id(%x) mismatched\n",
 			device_id >> 4);
 		return -EINVAL;
@@ -846,7 +1031,8 @@ static int pca9450_i2c_probe(struct i2c_client *i2c)
 	}
 
 	dev_info(&i2c->dev, "%s probed.\n",
-		type == PCA9450_TYPE_PCA9450A ? "pca9450a" : "pca9450bc");
+		type == PCA9450_TYPE_PCA9450A ? "pca9450a" :
+		(type == PCA9450_TYPE_PCA9451A ? "pca9451a" : "pca9450bc"));
 
 	return 0;
 }
@@ -864,6 +1050,10 @@ static const struct of_device_id pca9450_of_match[] = {
 		.compatible = "nxp,pca9450c",
 		.data = (void *)PCA9450_TYPE_PCA9450BC,
 	},
+	{
+		.compatible = "nxp,pca9451a",
+		.data = (void *)PCA9450_TYPE_PCA9451A,
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, pca9450_of_match);
diff --git a/drivers/regulator/pf8x00-regulator.c b/drivers/regulator/pf8x00-regulator.c
index b0781d9a1058..9fd8e0949b32 100644
--- a/drivers/regulator/pf8x00-regulator.c
+++ b/drivers/regulator/pf8x00-regulator.c
@@ -142,7 +142,7 @@ static const struct regmap_config pf8x00_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = PF8X00_PAGE_SELECT,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 /* VLDOx output: 1.5V to 5.0V */
diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c
index 46854602b3ea..7c04870442d3 100644
--- a/drivers/regulator/pfuze100-regulator.c
+++ b/drivers/regulator/pfuze100-regulator.c
@@ -680,7 +680,7 @@ static const struct regmap_config pfuze_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = PFUZE_NUMREGS - 1,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static int pfuze100_regulator_probe(struct i2c_client *client)
diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c
index f52c3d47ecea..6c3b6bfac961 100644
--- a/drivers/regulator/rpi-panel-attiny-regulator.c
+++ b/drivers/regulator/rpi-panel-attiny-regulator.c
@@ -75,7 +75,7 @@ static const struct regmap_config attiny_regmap_config = {
 	.val_bits = 8,
 	.disable_locking = 1,
 	.max_register = REG_WRITE_DATA_L,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static int attiny_set_port_state(struct attiny_lcd *state, int reg, u8 val)
diff --git a/drivers/regulator/rtmv20-regulator.c b/drivers/regulator/rtmv20-regulator.c
index dfd1522637e4..3d8d29f87b58 100644
--- a/drivers/regulator/rtmv20-regulator.c
+++ b/drivers/regulator/rtmv20-regulator.c
@@ -312,7 +312,7 @@ static bool rtmv20_is_volatile_reg(struct device *dev, unsigned int reg)
 static const struct regmap_config rtmv20_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = RTMV20_REG_LDMASK,
 	.num_reg_defaults_raw = RTMV20_MAX_REGS,
 
diff --git a/drivers/regulator/rtq2208-regulator.c b/drivers/regulator/rtq2208-regulator.c
index 3079de41ef3f..b90e53d922d6 100644
--- a/drivers/regulator/rtq2208-regulator.c
+++ b/drivers/regulator/rtq2208-regulator.c
@@ -26,6 +26,7 @@
 #define RTQ2208_REG_BUCK_H_CFG0			0xA2
 #define RTQ2208_REG_LDO1_CFG			0xB1
 #define RTQ2208_REG_LDO2_CFG			0xC1
+#define RTQ2208_REG_LDO_DVS_CTRL		0xD0
 
 /* Mask */
 #define RTQ2208_BUCK_NR_MTP_SEL_MASK		GENMASK(7, 0)
@@ -40,6 +41,10 @@
 #define RTQ2208_EN_DIS_MASK			BIT(0)
 #define RTQ2208_BUCK_RAMP_SEL_MASK		GENMASK(2, 0)
 #define RTQ2208_HD_INT_MASK			BIT(0)
+#define RTQ2208_LDO1_DISCHG_EN_MASK		BIT(4)
+#define RTQ2208_LDO1_VOSEL_SD_MASK		BIT(5)
+#define RTQ2208_LDO2_DISCHG_EN_MASK		BIT(6)
+#define RTQ2208_LDO2_VOSEL_SD_MASK		BIT(7)
 
 /* Size */
 #define RTQ2208_VOUT_MAXNUM			256
@@ -317,23 +322,6 @@ static irqreturn_t rtq2208_irq_handler(int irqno, void *devid)
 	return IRQ_HANDLED;
 }
 
-#define RTQ2208_REGULATOR_INFO(_name, _base) \
-{ \
-	.name = #_name, \
-	.base = _base, \
-}
-#define BUCK_RG_BASE(_id)	RTQ2208_REG_BUCK_##_id##_CFG0
-#define BUCK_RG_SHIFT(_base, _shift)	(_base + _shift)
-#define LDO_RG_BASE(_id)	RTQ2208_REG_LDO##_id##_CFG
-#define LDO_RG_SHIFT(_base, _shift)	(_base + _shift)
-#define	VSEL_SHIFT(_sel)	(_sel ? 3 : 1)
-#define MTP_SEL_MASK(_sel)	RTQ2208_BUCK_EN_NR_MTP_SEL##_sel##_MASK
-
-static const struct linear_range rtq2208_vout_range[] = {
-	REGULATOR_LINEAR_RANGE(400000, 0, 180, 5000),
-	REGULATOR_LINEAR_RANGE(1310000, 181, 255, 10000),
-};
-
 static int rtq2208_of_get_fixed_voltage(struct device *dev,
 					struct of_regulator_match *rtq2208_ldo_match, int n_fixed)
 {
@@ -372,6 +360,34 @@ static int rtq2208_of_get_fixed_voltage(struct device *dev,
 	return 0;
 }
 
+
+#define BUCK_INFO(_name, _id)						\
+{									\
+	.name = _name,							\
+	.base = RTQ2208_REG_BUCK_##_id##_CFG0,				\
+	.enable_reg = BUCK_RG_SHIFT(RTQ2208_REG_BUCK_##_id##_CFG0, 2),	\
+	.dis_reg = RTQ2208_REG_BUCK_##_id##_CFG0,			\
+}
+
+#define LDO_INFO(_name, _id)						\
+{									\
+	.name = _name,							\
+	.base = RTQ2208_REG_LDO##_id##_CFG,				\
+	.enable_reg = RTQ2208_REG_LDO##_id##_CFG,			\
+	.dis_mask = RTQ2208_LDO##_id##_DISCHG_EN_MASK,			\
+	.dis_on = RTQ2208_LDO##_id##_DISCHG_EN_MASK,			\
+	.vsel_mask = RTQ2208_LDO##_id##_VOSEL_SD_MASK,			\
+}
+
+#define BUCK_RG_SHIFT(_base, _shift)	(_base + _shift)
+#define	VSEL_SHIFT(_sel)	(_sel ? 3 : 1)
+#define MTP_SEL_MASK(_sel)	RTQ2208_BUCK_EN_NR_MTP_SEL##_sel##_MASK
+
+static const struct linear_range rtq2208_vout_range[] = {
+	REGULATOR_LINEAR_RANGE(400000, 0, 180, 5000),
+	REGULATOR_LINEAR_RANGE(1310000, 181, 255, 10000),
+};
+
 static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, int mtp_sel,
 					int idx, struct of_regulator_match *rtq2208_ldo_match, int *ldo_idx)
 {
@@ -379,17 +395,22 @@ static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, in
 	static const struct {
 		char *name;
 		int base;
+		int enable_reg;
+		int dis_reg;
+		int dis_mask;
+		int dis_on;
+		int vsel_mask;
 	} regulator_info[] = {
-		RTQ2208_REGULATOR_INFO(buck-b, BUCK_RG_BASE(B)),
-		RTQ2208_REGULATOR_INFO(buck-c, BUCK_RG_BASE(C)),
-		RTQ2208_REGULATOR_INFO(buck-d, BUCK_RG_BASE(D)),
-		RTQ2208_REGULATOR_INFO(buck-a, BUCK_RG_BASE(A)),
-		RTQ2208_REGULATOR_INFO(buck-f, BUCK_RG_BASE(F)),
-		RTQ2208_REGULATOR_INFO(buck-g, BUCK_RG_BASE(G)),
-		RTQ2208_REGULATOR_INFO(buck-h, BUCK_RG_BASE(H)),
-		RTQ2208_REGULATOR_INFO(buck-e, BUCK_RG_BASE(E)),
-		RTQ2208_REGULATOR_INFO(ldo2, LDO_RG_BASE(2)),
-		RTQ2208_REGULATOR_INFO(ldo1, LDO_RG_BASE(1)),
+		BUCK_INFO("buck-b", B),
+		BUCK_INFO("buck-c", C),
+		BUCK_INFO("buck-d", D),
+		BUCK_INFO("buck-a", A),
+		BUCK_INFO("buck-f", F),
+		BUCK_INFO("buck-g", G),
+		BUCK_INFO("buck-h", H),
+		BUCK_INFO("buck-e", E),
+		LDO_INFO("ldo2", 2),
+		LDO_INFO("ldo1", 1),
 	}, *curr_info;
 
 	curr_info = regulator_info + idx;
@@ -401,15 +422,13 @@ static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, in
 	desc->owner = THIS_MODULE;
 	desc->type = REGULATOR_VOLTAGE;
 	desc->enable_mask = mtp_sel ? MTP_SEL_MASK(1) : MTP_SEL_MASK(0);
-	desc->active_discharge_on = RTQ2208_EN_DIS_MASK;
+	desc->enable_reg = curr_info->enable_reg;
 	desc->active_discharge_off = 0;
-	desc->active_discharge_mask = RTQ2208_EN_DIS_MASK;
 
 	rdesc->mode_mask = RTQ2208_BUCK_NRMODE_MASK;
 
 	if (idx >= RTQ2208_BUCK_B && idx <= RTQ2208_BUCK_E) {
 		/* init buck desc */
-		desc->enable_reg = BUCK_RG_SHIFT(curr_info->base, 2);
 		desc->ops = &rtq2208_regulator_buck_ops;
 		desc->vsel_reg = curr_info->base + VSEL_SHIFT(mtp_sel);
 		desc->vsel_mask = RTQ2208_BUCK_NR_MTP_SEL_MASK;
@@ -417,8 +436,10 @@ static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, in
 		desc->linear_ranges = rtq2208_vout_range;
 		desc->n_linear_ranges = ARRAY_SIZE(rtq2208_vout_range);
 		desc->ramp_reg = BUCK_RG_SHIFT(curr_info->base, 5);
-		desc->active_discharge_reg = curr_info->base;
 		desc->of_map_mode = rtq2208_of_map_mode;
+		desc->active_discharge_reg = curr_info->dis_reg;
+		desc->active_discharge_on = RTQ2208_EN_DIS_MASK;
+		desc->active_discharge_mask = RTQ2208_EN_DIS_MASK;
 
 		rdesc->mode_reg = BUCK_RG_SHIFT(curr_info->base, 2);
 		rdesc->suspend_config_reg = BUCK_RG_SHIFT(curr_info->base, 4);
@@ -426,14 +447,11 @@ static void rtq2208_init_regulator_desc(struct rtq2208_regulator_desc *rdesc, in
 		rdesc->suspend_mode_mask = RTQ2208_BUCK_STRMODE_MASK;
 	} else {
 		/* init ldo desc */
-		desc->enable_reg = curr_info->base;
-		desc->ops = &rtq2208_regulator_ldo_ops;
-		desc->n_voltages = 1;
-		desc->active_discharge_reg = LDO_RG_SHIFT(curr_info->base, 2);
-
-		rtq2208_ldo_match[*ldo_idx].name = desc->name;
-		rtq2208_ldo_match[*ldo_idx].driver_data = rdesc;
-		rtq2208_ldo_match[(*ldo_idx)++].desc = desc;
+		desc->active_discharge_reg = RTQ2208_REG_LDO_DVS_CTRL;
+		desc->active_discharge_on = curr_info->dis_on;
+		desc->active_discharge_mask = curr_info->dis_mask;
+		desc->vsel_reg = RTQ2208_REG_LDO_DVS_CTRL;
+		desc->vsel_mask = curr_info->vsel_mask;
 
 		rdesc->suspend_config_reg = curr_info->base;
 		rdesc->suspend_enable_mask = RTQ2208_LDO_EN_STR_MASK;
@@ -457,6 +475,10 @@ static int rtq2208_parse_regulator_dt_data(int n_regulator, const unsigned int *
 			return -ENOMEM;
 
 		rtq2208_init_regulator_desc(rdesc[i], mtp_sel, idx, rtq2208_ldo_match, &ldo_idx);
+
+		/* init ldo dvs ability */
+		if (idx >= RTQ2208_LDO2)
+			rtq2208_ldo_match[idx - RTQ2208_LDO2].desc = &rdesc[i]->desc;
 	}
 
 	/* init ldo fixed_uV */
diff --git a/drivers/regulator/rtq6752-regulator.c b/drivers/regulator/rtq6752-regulator.c
index 8176e5ab0683..d35d844eff3b 100644
--- a/drivers/regulator/rtq6752-regulator.c
+++ b/drivers/regulator/rtq6752-regulator.c
@@ -209,7 +209,7 @@ static const struct reg_default rtq6752_reg_defaults[] = {
 static const struct regmap_config rtq6752_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = RTQ6752_REG_FAULT,
 	.reg_defaults = rtq6752_reg_defaults,
 	.num_reg_defaults = ARRAY_SIZE(rtq6752_reg_defaults),
diff --git a/drivers/regulator/sun20i-regulator.c b/drivers/regulator/sun20i-regulator.c
new file mode 100644
index 000000000000..e09be44859e7
--- /dev/null
+++ b/drivers/regulator/sun20i-regulator.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (c) 2021-2022 Samuel Holland <samuel@sholland.org>
+//
+
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+#define SUN20I_SYS_LDO_CTRL_REG		0x150
+
+struct sun20i_regulator_data {
+	const struct regulator_desc	*descs;
+	unsigned int			ndescs;
+};
+
+/* regulator_list_voltage_linear() modified for the non-integral uV_step. */
+static int sun20i_d1_system_ldo_list_voltage(struct regulator_dev *rdev,
+					     unsigned int selector)
+{
+	const struct regulator_desc *desc = rdev->desc;
+	unsigned int fraction, uV;
+
+	if (selector >= desc->n_voltages)
+		return -EINVAL;
+
+	uV = desc->min_uV + (desc->uV_step * selector);
+	fraction = selector + (desc->min_uV % 4);
+
+	if (uV > 1606667)
+		uV += 6667;
+	else
+		fraction++;
+
+	/* Produce correctly-rounded absolute voltages. */
+	return uV + (fraction / 3);
+}
+
+static const struct regulator_ops sun20i_d1_system_ldo_ops = {
+	.list_voltage		= sun20i_d1_system_ldo_list_voltage,
+	.map_voltage		= regulator_map_voltage_ascend,
+	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
+};
+
+static const struct regulator_desc sun20i_d1_system_ldo_descs[] = {
+	{
+		.name		= "ldoa",
+		.supply_name	= "ldo-in",
+		.of_match	= "ldoa",
+		.ops		= &sun20i_d1_system_ldo_ops,
+		.type		= REGULATOR_VOLTAGE,
+		.owner		= THIS_MODULE,
+		.n_voltages	= 32,
+		.min_uV		= 1593333,
+		.uV_step	= 13333, /* repeating */
+		.vsel_reg	= SUN20I_SYS_LDO_CTRL_REG,
+		.vsel_mask	= GENMASK(7, 0),
+	},
+	{
+		.name		= "ldob",
+		.supply_name	= "ldo-in",
+		.of_match	= "ldob",
+		.ops		= &sun20i_d1_system_ldo_ops,
+		.type		= REGULATOR_VOLTAGE,
+		.owner		= THIS_MODULE,
+		.n_voltages	= 64,
+		.min_uV		= 1166666,
+		.uV_step	= 13333, /* repeating */
+		.vsel_reg	= SUN20I_SYS_LDO_CTRL_REG,
+		.vsel_mask	= GENMASK(15, 8),
+	},
+};
+
+static const struct sun20i_regulator_data sun20i_d1_system_ldos = {
+	.descs	= sun20i_d1_system_ldo_descs,
+	.ndescs	= ARRAY_SIZE(sun20i_d1_system_ldo_descs),
+};
+
+static struct regmap *sun20i_regulator_get_regmap(struct device *dev)
+{
+	struct regmap *regmap;
+
+	/*
+	 * First try the syscon interface. The system control device is not
+	 * compatible with "syscon", so fall back to getting the regmap from
+	 * its platform device. This is ugly, but required for devicetree
+	 * backward compatibility.
+	 */
+	regmap = syscon_node_to_regmap(dev->parent->of_node);
+	if (!IS_ERR(regmap))
+		return regmap;
+
+	regmap = dev_get_regmap(dev->parent, NULL);
+	if (regmap)
+		return regmap;
+
+	return ERR_PTR(-EPROBE_DEFER);
+}
+
+static int sun20i_regulator_probe(struct platform_device *pdev)
+{
+	const struct sun20i_regulator_data *data;
+	struct device *dev = &pdev->dev;
+	struct regulator_config config;
+	struct regmap *regmap;
+
+	data = of_device_get_match_data(dev);
+	if (!data)
+		return -EINVAL;
+
+	regmap = sun20i_regulator_get_regmap(dev);
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap), "Failed to get regmap\n");
+
+	config = (struct regulator_config) {
+		.dev	= dev,
+		.regmap	= regmap,
+	};
+
+	for (unsigned int i = 0; i < data->ndescs; ++i) {
+		const struct regulator_desc *desc = &data->descs[i];
+		struct regulator_dev *rdev;
+
+		rdev = devm_regulator_register(dev, desc, &config);
+		if (IS_ERR(rdev))
+			return PTR_ERR(rdev);
+	}
+
+	return 0;
+}
+
+static const struct of_device_id sun20i_regulator_of_match[] = {
+	{
+		.compatible = "allwinner,sun20i-d1-system-ldos",
+		.data = &sun20i_d1_system_ldos,
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, sun20i_regulator_of_match);
+
+static struct platform_driver sun20i_regulator_driver = {
+	.probe	= sun20i_regulator_probe,
+	.driver	= {
+		.name		= "sun20i-regulator",
+		.of_match_table	= sun20i_regulator_of_match,
+	},
+};
+module_platform_driver(sun20i_regulator_driver);
+
+MODULE_AUTHOR("Samuel Holland <samuel@sholland.org>");
+MODULE_DESCRIPTION("Allwinner D1 internal LDO driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/tps51632-regulator.c b/drivers/regulator/tps51632-regulator.c
index 5199e0437388..3a384bf9d2c5 100644
--- a/drivers/regulator/tps51632-regulator.c
+++ b/drivers/regulator/tps51632-regulator.c
@@ -199,7 +199,7 @@ static const struct regmap_config tps51632_regmap_config = {
 	.readable_reg		= is_read_reg,
 	.volatile_reg		= is_volatile_reg,
 	.max_register		= TPS51632_MAX_REG - 1,
-	.cache_type		= REGCACHE_RBTREE,
+	.cache_type		= REGCACHE_MAPLE,
 };
 
 #if defined(CONFIG_OF)
diff --git a/drivers/regulator/tps62360-regulator.c b/drivers/regulator/tps62360-regulator.c
index 32e1a05a57fd..be6a6702cbfa 100644
--- a/drivers/regulator/tps62360-regulator.c
+++ b/drivers/regulator/tps62360-regulator.c
@@ -275,7 +275,7 @@ static const struct regmap_config tps62360_regmap_config = {
 	.reg_bits		= 8,
 	.val_bits		= 8,
 	.max_register		= REG_CHIPID,
-	.cache_type		= REGCACHE_RBTREE,
+	.cache_type		= REGCACHE_MAPLE,
 };
 
 static struct tps62360_regulator_platform_data *
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
index 9149d41fe65b..b7af5fe63e09 100644
--- a/drivers/staging/iio/impedance-analyzer/ad5933.c
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -84,7 +84,6 @@
 
 struct ad5933_state {
 	struct i2c_client		*client;
-	struct regulator		*reg;
 	struct clk			*mclk;
 	struct delayed_work		work;
 	struct mutex			lock; /* Protect sensor state */
@@ -660,13 +659,6 @@ static void ad5933_work(struct work_struct *work)
 	}
 }
 
-static void ad5933_reg_disable(void *data)
-{
-	struct ad5933_state *st = data;
-
-	regulator_disable(st->reg);
-}
-
 static int ad5933_probe(struct i2c_client *client)
 {
 	const struct i2c_device_id *id = i2c_client_get_device_id(client);
@@ -685,23 +677,9 @@ static int ad5933_probe(struct i2c_client *client)
 
 	mutex_init(&st->lock);
 
-	st->reg = devm_regulator_get(&client->dev, "vdd");
-	if (IS_ERR(st->reg))
-		return PTR_ERR(st->reg);
-
-	ret = regulator_enable(st->reg);
-	if (ret) {
-		dev_err(&client->dev, "Failed to enable specified VDD supply\n");
-		return ret;
-	}
-
-	ret = devm_add_action_or_reset(&client->dev, ad5933_reg_disable, st);
-	if (ret)
-		return ret;
-
-	ret = regulator_get_voltage(st->reg);
+	ret = devm_regulator_get_enable_read_voltage(&client->dev, "vdd");
 	if (ret < 0)
-		return ret;
+		return dev_err_probe(&client->dev, ret, "failed to get vdd voltage\n");
 
 	st->vref_mv = ret / 1000;