title: Dialog Semiconductor DA9121 voltage regulator
maintainers:
- - Vincent Whitchurch <vincent.whitchurch@axis.com>
+ - Adam Ward <Adam.Ward.opensource@diasemi.com>
+
+description: |
+ Dialog Semiconductor DA9121 Single-channel 10A double-phase buck converter
+ Dialog Semiconductor DA9122 Double-channel 5A single-phase buck converter
+ Dialog Semiconductor DA9220 Double-channel 3A single-phase buck converter
+ Dialog Semiconductor DA9217 Single-channel 6A double-phase buck converter
+ Dialog Semiconductor DA9130 Single-channel 10A double-phase buck converter
+ Dialog Semiconductor DA9131 Double-channel 5A single-phase buck converter
+ Dialog Semiconductor DA9132 Double-channel 3A single-phase buck converter
+
+ Current limits
+
+ This is PER PHASE, and the current limit setting in the devices reflect
+ that with a maximum 10A limit. Allowing for transients at/near double
+ the rated current, this translates across the device range to per
+ channel figures as so...
+
+ | DA9121 DA9122 DA9220 DA9217 DA9140
+ | /DA9130 /DA9131 /DA9132
+ -----------------------------------------------------------------------------
+ Output current / channel | 10000000 5000000 3000000 6000000 40000000
+ Output current / phase | 5000000 5000000 3000000 3000000 9500000
+ -----------------------------------------------------------------------------
+ Min regulator-min-microvolt| 300000 300000 300000 300000 500000
+ Max regulator-max-microvolt| 1900000 1900000 1900000 1900000 1000000
+ Device hardware default | 1000000 1000000 1000000 1000000 1000000
+ -----------------------------------------------------------------------------
+ Min regulator-min-microamp | 7000000 3500000 3500000 7000000 26000000
+ Max regulator-max-microamp | 20000000 10000000 6000000 12000000 78000000
+ Device hardware default | 15000000 7500000 5500000 11000000 58000000
properties:
+ $nodename:
+ pattern: "pmic@[0-9a-f]{1,2}"
compatible:
- const: dlg,da9121
+ enum:
+ - dlg,da9121
+ - dlg,da9122
+ - dlg,da9220
+ - dlg,da9217
+ - dlg,da9130
+ - dlg,da9131
+ - dlg,da9132
+ - dlg,da9140
reg:
maxItems: 1
+ description: Specifies the I2C slave address.
+
+ interrupts:
+ maxItems: 1
+ description: IRQ line information.
+
+ dlg,irq-polling-delay-passive-ms:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 1000
+ maximum: 10000
+ description: |
+ Specify the polling period, measured in milliseconds, between interrupt status
+ update checks. Range 1000-10000 ms.
- buck1:
- description:
- Initial data for the Buck1 regulator.
- $ref: "regulator.yaml#"
+ regulators:
type: object
+ $ref: regulator.yaml#
+ description: |
+ This node defines the settings for the BUCK. The content of the
+ sub-node is defined by the standard binding for regulators; see regulator.yaml.
+ The DA9121 regulator is bound using their names listed below
+ buck1 - BUCK1
+ buck2 - BUCK2 //DA9122, DA9220, DA9131, DA9132 only
-additionalProperties: false
+ patternProperties:
+ "^buck([1-2])$":
+ type: object
+ $ref: regulator.yaml#
+
+ properties:
+ regulator-mode:
+ maxItems: 1
+ description: Defined in include/dt-bindings/regulator/dlg,da9121-regulator.h
+
+ regulator-initial-mode:
+ maxItems: 1
+ description: Defined in include/dt-bindings/regulator/dlg,da9121-regulator.h
+
+ enable-gpios:
+ maxItems: 1
+ description: Specify a valid GPIO for platform control of the regulator
+
+ dlg,ripple-cancel:
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ description: |
+ Defined in include/dt-bindings/regulator/dlg,da9121-regulator.h
+ Only present on multi-channel devices (DA9122, DA9220, DA9131, DA9132)
+
+ unevaluatedProperties: false
required:
- compatible
- reg
+ - regulators
+
+additionalProperties: false
examples:
- |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/regulator/dlg,da9121-regulator.h>
i2c {
#address-cells = <1>;
#size-cells = <0>;
- regulator@68 {
+ pmic@68 {
compatible = "dlg,da9121";
reg = <0x68>;
- buck1 {
- regulator-min-microvolt = <680000>;
- regulator-max-microvolt = <820000>;
+ interrupt-parent = <&gpio6>;
+ interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+
+ dlg,irq-polling-delay-passive-ms = <2000>;
+
+ regulators {
+ DA9121_BUCK1: buck1 {
+ regulator-name = "BUCK1";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-min-microamp = <7000000>;
+ regulator-max-microamp = <20000000>;
+ regulator-boot-on;
+ regulator-initial-mode = <DA9121_BUCK_MODE_AUTO>;
+ enable-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
+ };
};
};
};
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/regulator/dlg,da9121-regulator.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ pmic@68 {
+ compatible = "dlg,da9122";
+ reg = <0x68>;
+
+ interrupt-parent = <&gpio6>;
+ interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
+
+ dlg,irq-polling-delay-passive-ms = <2000>;
+
+ regulators {
+ DA9122_BUCK1: buck1 {
+ regulator-name = "BUCK1";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-min-microamp = <3500000>;
+ regulator-max-microamp = <10000000>;
+ regulator-boot-on;
+ regulator-initial-mode = <DA9121_BUCK_MODE_AUTO>;
+ enable-gpios = <&gpio6 1 GPIO_ACTIVE_HIGH>;
+ dlg,ripple-cancel = <DA9121_BUCK_RIPPLE_CANCEL_NONE>;
+ };
+ DA9122_BUCK2: buck2 {
+ regulator-name = "BUCK2";
+ regulator-min-microvolt = <300000>;
+ regulator-max-microvolt = <1900000>;
+ regulator-min-microamp = <3500000>;
+ regulator-max-microamp = <10000000>;
+ regulator-boot-on;
+ regulator-initial-mode = <DA9121_BUCK_MODE_AUTO>;
+ enable-gpios = <&gpio6 2 GPIO_ACTIVE_HIGH>;
+ dlg,ripple-cancel = <DA9121_BUCK_RIPPLE_CANCEL_NONE>;
+ };
+ };
+ };
+ };
...
projects / platform / kernel / linux-rpi.git / commitdiff