Commit 8566de1c authored by Alex Elder's avatar Alex Elder Committed by Lee Jones
Browse files

dt-bindings: mfd: Add support the SpacemiT P1 PMIC 



Enable the SpacemiT P1, which is an I2C-controlled PMIC.  Initially
only the RTC and regulators will be supported.

Signed-off-by: default avatarAlex Elder <elder@riscstar.com>
Reviewed-by: default avatar"Rob Herring (Arm)" <robh@kernel.org>
Acked-by: default avatarTroy Mitchell <troymitchell988@gmail.com>
Link: https://lore.kernel.org/r/20250825172057.163883-2-elder@riscstar.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent a598ae45

Documentation/devicetree/bindings/mfd/spacemit,p1.yaml

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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause

%YAML 1.2

---

$id: http://devicetree.org/schemas/mfd/spacemit,p1.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: SpacemiT P1 Power Management Integrated Circuit



maintainers:

  - Troy Mitchell <troy.mitchell@linux.spacemit.com>



description:

  P1 is an I2C-controlled PMIC produced by SpacemiT.  It implements six

  constant-on-time buck converters and twelve low-dropout regulators.

  It also contains a load switch, watchdog timer, real-time clock, eight

  12-bit ADC channels, and six GPIOs.  Additional details are available

  in the "Power Stone/P1" section at the following link.

    https://developer.spacemit.com/documentation



properties:

  compatible:

    const: spacemit,p1



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  vin-supply:

    description: Input supply phandle.



  regulators:

    type: object



    patternProperties:

      "^(buck[1-6]|aldo[1-4]|dldo[1-7])$":

        type: object

        $ref: /schemas/regulator/regulator.yaml#

        unevaluatedProperties: false



    unevaluatedProperties: false



required:

  - compatible

  - reg

  - interrupts



unevaluatedProperties: false



examples:

  - |

    i2c {

        #address-cells = <1>;

        #size-cells = <0>;



        pmic@41 {

            compatible = "spacemit,p1";

            reg = <0x41>;

            interrupts = <64>;



            regulators {

                buck1 {

                    regulator-name = "buck1";

                    regulator-min-microvolt = <500000>;

                    regulator-max-microvolt = <3450000>;

                    regulator-ramp-delay = <5000>;

                    regulator-always-on;

                };



                aldo1 {

                    regulator-name = "aldo1";

                    regulator-min-microvolt = <500000>;

                    regulator-max-microvolt = <3400000>;

                    regulator-boot-on;

                };



                dldo1 {

                    regulator-name = "dldo1";

                    regulator-min-microvolt = <500000>;

                    regulator-max-microvolt = <3400000>;

                    regulator-boot-on;

                };

            };

        };

    };