From: ChiYuan Huang <[email protected]>
Add binding document for Richtek RTQ6752.
Signed-off-by: ChiYuan Huang <[email protected]>
---
.../regulator/richtek,rtq6752-regulator.yaml | 78 ++++++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
new file mode 100644
index 00000000..641840e
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rtq6752-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RTQ6752 TFT LCD Voltage Regulator
+
+maintainers:
+ - ChiYuan Huang <[email protected]>
+
+description: |
+ The RTQ6752 is an I2C interface pgorammable power management IC. It includes
+ two synchronous boost converter for PAVDD, and one synchronous NAVDD
+ buck-boost. The device is suitable for automotive TFT-LCD panel.
+
+properties:
+ compatible:
+ enum:
+ - richtek,rtq6752
+
+ reg:
+ maxItems: 1
+
+ enable-gpios:
+ description: |
+ A connection of the chip 'enable' gpio line. If not provided, treat it as
+ external pull up.
+ maxItems: 1
+
+ regulators:
+ type: object
+ $ref: regulator.yaml#
+
+ patternProperties:
+ "^(p|n)avdd$":
+ type: object
+ $ref: regulator.yaml#
+ description: |
+ regulator description for pavdd and navdd.
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - regulators
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rtq6752@6b {
+ compatible = "richtek,rtq6752";
+ status = "okay";
+ reg = <0x6b>;
+ enable-gpios = <&gpio26 2 0>;
+
+ regulators {
+ pavdd {
+ regulator-name = "rtq6752-pavdd";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <7300000>;
+ regulator-boot-on;
+ };
+ navdd {
+ regulator-name = "rtq6752-navdd";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <7300000>;
+ regulator-boot-on;
+ };
+ };
+ };
+ };
--
2.7.4
From: ChiYuan Huang <[email protected]>
Add suport for Richtek RTQ6752.
Signed-off-by: ChiYuan Huang <[email protected]>
---
drivers/regulator/Kconfig | 9 ++
drivers/regulator/Makefile | 1 +
drivers/regulator/rtq6752-regulator.c | 285 ++++++++++++++++++++++++++++++++++
3 files changed, 295 insertions(+)
create mode 100644 drivers/regulator/rtq6752-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 24ce9a1..6562d4c 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1066,6 +1066,15 @@ config REGULATOR_RTMV20
the Richtek RTMV20. It can support the load current up to 6A and
integrate strobe/vsync/fsin signal to synchronize the IR camera.
+config REGULATOR_RTQ6752
+ tristate "Richtek RTQ6752 TFT LCD voltage regulator"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ This driver adds support for Richtek RTQ6752. RTQ6752 includes two
+ synchronous boost converters for PAVDD, and one synchronous NAVDD
+ buck-boost. This device is suitable for automotive TFT-LCD panel.
+
config REGULATOR_S2MPA01
tristate "Samsung S2MPA01 voltage regulator"
depends on MFD_SEC_CORE || COMPILE_TEST
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 8c2f822..102b2a0 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -128,6 +128,7 @@ obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o
obj-$(CONFIG_REGULATOR_RT6160) += rt6160-regulator.o
obj-$(CONFIG_REGULATOR_RT6245) += rt6245-regulator.o
obj-$(CONFIG_REGULATOR_RTMV20) += rtmv20-regulator.o
+obj-$(CONFIG_REGULATOR_RTQ6752) += rtq6752-regulator.o
obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o
obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
diff --git a/drivers/regulator/rtq6752-regulator.c b/drivers/regulator/rtq6752-regulator.c
new file mode 100644
index 00000000..fe31597
--- /dev/null
+++ b/drivers/regulator/rtq6752-regulator.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+enum {
+ RTQ6752_IDX_PAVDD = 0,
+ RTQ6752_IDX_NAVDD = 1,
+ RTQ6752_IDX_MAX
+};
+
+#define RTQ6752_REG_PAVDD 0x00
+#define RTQ6752_REG_NAVDD 0x01
+#define RTQ6752_REG_PAVDDONDLY 0x07
+#define RTQ6752_REG_PAVDDSSTIME 0x07
+#define RTQ6752_REG_NAVDDONDLY 0x0D
+#define RTQ6752_REG_NAVDDSSTIME 0x0E
+#define RTQ6752_REG_OPTION1 0x12
+#define RTQ6752_REG_CHSWITCH 0x16
+#define RTQ6752_REG_FAULT 0x1D
+
+#define RTQ6752_VOUT_MASK GENMASK(5, 0)
+#define RTQ6752_NAVDDEN_MASK BIT(3)
+#define RTQ6752_PAVDDEN_MASK BIT(0)
+#define RTQ6752_PAVDDAD_MASK BIT(4)
+#define RTQ6752_NAVDDAD_MASK BIT(3)
+#define RTQ6752_PAVDDF_MASK BIT(3)
+#define RTQ6752_NAVDDF_MASK BIT(0)
+#define RTQ6752_ENABLE_MASK (BIT(RTQ6752_IDX_MAX) - 1)
+
+#define RTQ6752_VOUT_MINUV 5000000
+#define RTQ6752_VOUT_STEPUV 50000
+#define RTQ6752_VOUT_NUM 47
+#define RTQ6752_I2CRDY_TIMEUS 1000
+#define RTQ6752_MINSS_TIMEUS 5000
+
+struct rtq6752_priv {
+ struct regmap *regmap;
+ struct gpio_desc *enable_gpio;
+ struct mutex lock;
+ unsigned char enable_flag;
+};
+
+static int rtq6752_set_vdd_enable(struct regulator_dev *rdev)
+{
+ struct rtq6752_priv *priv = rdev_get_drvdata(rdev);
+ int rid = rdev_get_id(rdev), ret;
+
+ mutex_lock(&priv->lock);
+ if (!priv->enable_flag && priv->enable_gpio) {
+ gpiod_set_value(priv->enable_gpio, 1);
+
+ usleep_range(RTQ6752_I2CRDY_TIMEUS,
+ RTQ6752_I2CRDY_TIMEUS + 100);
+
+ regcache_cache_only(priv->regmap, false);
+ ret = regcache_sync(priv->regmap);
+ if (ret) {
+ mutex_unlock(&priv->lock);
+ return ret;
+ }
+ }
+
+ priv->enable_flag |= BIT(rid);
+ mutex_unlock(&priv->lock);
+
+ return regulator_enable_regmap(rdev);
+}
+
+static int rtq6752_set_vdd_disable(struct regulator_dev *rdev)
+{
+ struct rtq6752_priv *priv = rdev_get_drvdata(rdev);
+ int rid = rdev_get_id(rdev), ret;
+
+ ret = regulator_disable_regmap(rdev);
+ if (ret)
+ return ret;
+
+ mutex_lock(&priv->lock);
+ priv->enable_flag &= ~BIT(rid);
+
+ if (!priv->enable_flag && priv->enable_gpio) {
+ regcache_cache_only(priv->regmap, true);
+ regcache_mark_dirty(priv->regmap);
+
+ gpiod_set_value(priv->enable_gpio, 0);
+ }
+ mutex_unlock(&priv->lock);
+
+ return 0;
+}
+
+static int rtq6752_get_error_flags(struct regulator_dev *rdev,
+ unsigned int *flags)
+{
+ unsigned int val, events = 0;
+ const unsigned int fault_mask[] = {
+ RTQ6752_PAVDDF_MASK, RTQ6752_NAVDDF_MASK };
+ int rid = rdev_get_id(rdev), ret;
+
+ ret = regmap_read(rdev->regmap, RTQ6752_REG_FAULT, &val);
+ if (ret)
+ return ret;
+
+ if (val & fault_mask[rid])
+ events = REGULATOR_ERROR_REGULATION_OUT;
+
+ *flags = events;
+ return 0;
+}
+
+static const struct regulator_ops rtq6752_regulator_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .enable = rtq6752_set_vdd_enable,
+ .disable = rtq6752_set_vdd_disable,
+ .is_enabled = regulator_is_enabled_regmap,
+ .set_active_discharge = regulator_set_active_discharge_regmap,
+ .get_error_flags = rtq6752_get_error_flags,
+};
+
+static const struct regulator_desc rtq6752_regulator_descs[] = {
+ {
+ .name = "rtq6752-pavdd",
+ .of_match = of_match_ptr("pavdd"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = RTQ6752_IDX_PAVDD,
+ .n_voltages = RTQ6752_VOUT_NUM,
+ .ops = &rtq6752_regulator_ops,
+ .owner = THIS_MODULE,
+ .min_uV = RTQ6752_VOUT_MINUV,
+ .uV_step = RTQ6752_VOUT_STEPUV,
+ .enable_time = RTQ6752_MINSS_TIMEUS,
+ .vsel_reg = RTQ6752_REG_PAVDD,
+ .vsel_mask = RTQ6752_VOUT_MASK,
+ .enable_reg = RTQ6752_REG_CHSWITCH,
+ .enable_mask = RTQ6752_PAVDDEN_MASK,
+ .active_discharge_reg = RTQ6752_REG_OPTION1,
+ .active_discharge_mask = RTQ6752_PAVDDAD_MASK,
+ .active_discharge_off = RTQ6752_PAVDDAD_MASK,
+ },
+ {
+ .name = "rtq6752-navdd",
+ .of_match = of_match_ptr("navdd"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = RTQ6752_IDX_NAVDD,
+ .n_voltages = RTQ6752_VOUT_NUM,
+ .ops = &rtq6752_regulator_ops,
+ .owner = THIS_MODULE,
+ .min_uV = RTQ6752_VOUT_MINUV,
+ .uV_step = RTQ6752_VOUT_STEPUV,
+ .enable_time = RTQ6752_MINSS_TIMEUS,
+ .vsel_reg = RTQ6752_REG_NAVDD,
+ .vsel_mask = RTQ6752_VOUT_MASK,
+ .enable_reg = RTQ6752_REG_CHSWITCH,
+ .enable_mask = RTQ6752_NAVDDEN_MASK,
+ .active_discharge_reg = RTQ6752_REG_OPTION1,
+ .active_discharge_mask = RTQ6752_NAVDDAD_MASK,
+ .active_discharge_off = RTQ6752_NAVDDAD_MASK,
+ }
+};
+
+static int rtq6752_init_device_properties(struct rtq6752_priv *priv)
+{
+ u8 raw_vals[] = { 0, 0 };
+ int ret;
+
+ /* Configure PAVDD on and softstart delay time to the minimum */
+ ret = regmap_raw_write(priv->regmap, RTQ6752_REG_PAVDDONDLY, raw_vals,
+ ARRAY_SIZE(raw_vals));
+ if (ret)
+ return ret;
+
+ /* Configure NAVDD on and softstart delay time to the minimum */
+ return regmap_raw_write(priv->regmap, RTQ6752_REG_NAVDDONDLY, raw_vals,
+ ARRAY_SIZE(raw_vals));
+}
+
+static bool rtq6752_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+ if (reg == RTQ6752_REG_FAULT)
+ return true;
+ return false;
+}
+
+static const struct reg_default rtq6752_reg_defaults[] = {
+ { RTQ6752_REG_PAVDD, 0x14 },
+ { RTQ6752_REG_NAVDD, 0x14 },
+ { RTQ6752_REG_PAVDDONDLY, 0x01 },
+ { RTQ6752_REG_PAVDDSSTIME, 0x01 },
+ { RTQ6752_REG_NAVDDONDLY, 0x01 },
+ { RTQ6752_REG_NAVDDSSTIME, 0x01 },
+ { RTQ6752_REG_OPTION1, 0x07 },
+ { RTQ6752_REG_CHSWITCH, 0x29 },
+};
+
+static const struct regmap_config rtq6752_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .cache_type = REGCACHE_RBTREE,
+ .max_register = RTQ6752_REG_FAULT,
+ .reg_defaults = rtq6752_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(rtq6752_reg_defaults),
+ .volatile_reg = rtq6752_is_volatile_reg,
+};
+
+static int rtq6752_probe(struct i2c_client *i2c)
+{
+ struct rtq6752_priv *priv;
+ struct regulator_config reg_cfg = {};
+ struct regulator_dev *rdev;
+ int i, ret;
+
+ priv = devm_kzalloc(&i2c->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ mutex_init(&priv->lock);
+
+ priv->enable_gpio = devm_gpiod_get_optional(&i2c->dev, "enable",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(priv->enable_gpio)) {
+ dev_err(&i2c->dev, "Failed to get 'enable' gpio\n");
+ return PTR_ERR(priv->enable_gpio);
+ }
+
+ usleep_range(RTQ6752_I2CRDY_TIMEUS, RTQ6752_I2CRDY_TIMEUS + 100);
+ /* Default EN pin to high, PAVDD and NAVDD will be on */
+ priv->enable_flag = RTQ6752_ENABLE_MASK;
+
+ priv->regmap = devm_regmap_init_i2c(i2c, &rtq6752_regmap_config);
+ if (IS_ERR(priv->regmap)) {
+ dev_err(&i2c->dev, "Failed to init regmap\n");
+ return PTR_ERR(priv->regmap);
+ }
+
+ ret = rtq6752_init_device_properties(priv);
+ if (ret) {
+ dev_err(&i2c->dev, "Failed to init device properties\n");
+ return ret;
+ }
+
+ reg_cfg.dev = &i2c->dev;
+ reg_cfg.regmap = priv->regmap;
+ reg_cfg.driver_data = priv;
+
+ for (i = 0; i < ARRAY_SIZE(rtq6752_regulator_descs); i++) {
+ rdev = devm_regulator_register(&i2c->dev,
+ rtq6752_regulator_descs + i,
+ ®_cfg);
+ if (IS_ERR(rdev)) {
+ dev_err(&i2c->dev, "Failed to init %d regulator\n", i);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct of_device_id __maybe_unused rtq6752_device_table[] = {
+ { .compatible = "richtek,rtq6752", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, rtq6752_device_table);
+
+static struct i2c_driver rtq6752_driver = {
+ .driver = {
+ .name = "rtq6752",
+ .of_match_table = rtq6752_device_table,
+ },
+ .probe_new = rtq6752_probe,
+};
+module_i2c_driver(rtq6752_driver);
+
+MODULE_AUTHOR("ChiYuan Hwang <[email protected]>");
+MODULE_DESCRIPTION("Richtek RTQ6752 Regulator Driver");
+MODULE_LICENSE("GPL v2");
--
2.7.4
On Fri, 9 Jul 2021 23:40:35 +0800, cy_huang wrote:
> Add binding document for Richtek RTQ6752.
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next
Thanks!
[1/2] regulator: rtq6752: Add binding document for Richtek RTQ6752
commit: 526e99cf43fe3884014f9e9f2ca5d04d56007287
[2/2] regulator: rt6752: Add support for Richtek RTQ6752
commit: f40f9409719fa092924803723b9445be13fac8fb
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
On Fri, Jul 09, 2021 at 11:40:35PM +0800, cy_huang wrote:
> From: ChiYuan Huang <[email protected]>
>
> Add binding document for Richtek RTQ6752.
>
> Signed-off-by: ChiYuan Huang <[email protected]>
> ---
> .../regulator/richtek,rtq6752-regulator.yaml | 78 ++++++++++++++++++++++
> 1 file changed, 78 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
>
> diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
> new file mode 100644
> index 00000000..641840e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
> @@ -0,0 +1,78 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/richtek,rtq6752-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Richtek RTQ6752 TFT LCD Voltage Regulator
> +
> +maintainers:
> + - ChiYuan Huang <[email protected]>
> +
> +description: |
> + The RTQ6752 is an I2C interface pgorammable power management IC. It includes
> + two synchronous boost converter for PAVDD, and one synchronous NAVDD
> + buck-boost. The device is suitable for automotive TFT-LCD panel.
> +
> +properties:
> + compatible:
> + enum:
> + - richtek,rtq6752
> +
> + reg:
> + maxItems: 1
> +
> + enable-gpios:
> + description: |
> + A connection of the chip 'enable' gpio line. If not provided, treat it as
> + external pull up.
> + maxItems: 1
> +
> + regulators:
> + type: object
> + $ref: regulator.yaml#
This node is not a regulator, just a container. Drop.
> +
> + patternProperties:
> + "^(p|n)avdd$":
> + type: object
> + $ref: regulator.yaml#
> + description: |
> + regulator description for pavdd and navdd.
> +
> + additionalProperties: false
> +
> +required:
> + - compatible
> + - reg
> + - regulators
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + rtq6752@6b {
> + compatible = "richtek,rtq6752";
> + status = "okay";
Don't show status in examples.
> + reg = <0x6b>;
> + enable-gpios = <&gpio26 2 0>;
> +
> + regulators {
> + pavdd {
> + regulator-name = "rtq6752-pavdd";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <7300000>;
> + regulator-boot-on;
> + };
> + navdd {
> + regulator-name = "rtq6752-navdd";
> + regulator-min-microvolt = <5000000>;
> + regulator-max-microvolt = <7300000>;
> + regulator-boot-on;
> + };
> + };
> + };
> + };
> --
> 2.7.4
>
>
> On Fri, Jul 09, 2021 at 11:40:35PM +0800, cy_huang wrote:
> >
> > From: ChiYuan Huang <[email protected]>
> >
> > Add binding document for Richtek RTQ6752.
> >
> > Signed-off-by: ChiYuan Huang <[email protected]>
> > ---
> > .../regulator/richtek,rtq6752-regulator.yaml | 78
> > ++++++++++++++++++++++
> > 1 file changed, 78 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtq6752-
> > regulator.yaml
> > b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-regulator.yaml
> > new file mode 100644
> > index 00000000..641840e
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/regulator/richtek,rtq6752-
> > regulator.yaml
> > @@ -0,0 +1,78 @@
> > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/regulator/richtek,rtq6752-regulator.yaml
> > #
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Richtek RTQ6752 TFT LCD Voltage Regulator
> > +
> > +maintainers:
> > + - ChiYuan Huang <[email protected]>
> > +
> > +description: |
> > + The RTQ6752 is an I2C interface pgorammable power management IC. It
> > includes
> > + two synchronous boost converter for PAVDD, and one synchronous NAVDD
> > + buck-boost. The device is suitable for automotive TFT-LCD panel.
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - richtek,rtq6752
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + enable-gpios:
> > + description: |
> > + A connection of the chip 'enable' gpio line. If not provided, treat
> > it as
> > + external pull up.
> > + maxItems: 1
> > +
> > + regulators:
> > + type: object
> > + $ref: regulator.yaml#
> This node is not a regulator, just a container. Drop.
>
Yes.
> >
> > +
> > + patternProperties:
> > + "^(p|n)avdd$":
> > + type: object
> > + $ref: regulator.yaml#
> > + description: |
> > + regulator description for pavdd and navdd.
> > +
> > + additionalProperties: false
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - regulators
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + i2c {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + rtq6752@6b {
> > + compatible = "richtek,rtq6752";
> > + status = "okay";
> Don't show status in examples.
>
Okay.
I'll use one patch to update the above comment.
Thanks.
> >
> > + reg = <0x6b>;
> > + enable-gpios = <&gpio26 2 0>;
> > +
> > + regulators {
> > + pavdd {
> > + regulator-name = "rtq6752-pavdd";
> > + regulator-min-microvolt = <5000000>;
> > + regulator-max-microvolt = <7300000>;
> > + regulator-boot-on;
> > + };
> > + navdd {
> > + regulator-name = "rtq6752-navdd";
> > + regulator-min-microvolt = <5000000>;
> > + regulator-max-microvolt = <7300000>;
> > + regulator-boot-on;
> > + };
> > + };
> > + };
> > + };
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