linux-kernel - Re: [PATCH v12 1/7] dt-bindings: mfd: add support the SpacemiT P1 PMIC

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Message-ID: <aJyC5q0X8mj1xbSB@troy-wujie14pro-arch>
Date: Wed, 13 Aug 2025 20:19:50 +0800
From: Troy Mitchell <troymitchell988@...il.com>
To: Alex Elder <elder@...cstar.com>
Cc: lee@...nel.org, lgirdwood@...il.com, broonie@...nel.org,
	alexandre.belloni@...tlin.com, robh@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, mat.jonczyk@...pl, dlan@...too.org,
	paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu,
	alex@...ti.fr, linux.amoon@...il.com, troymitchell988@...il.com,
	guodong@...cstar.com, linux-rtc@...r.kernel.org,
	devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
	spacemit@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v12 1/7] dt-bindings: mfd: add support the SpacemiT P1
 PMIC

On Tue, Aug 12, 2025 at 09:45:02PM -0500, Alex Elder wrote:
> Enable the SpacemiT P1, which is an I2C-controlled PMIC.  Initially
> only the RTC and regulators will be supported.
> 
> Signed-off-by: Alex Elder <elder@...cstar.com>
> Reviewed-by: Rob Herring (Arm) <robh@...nel.org>
> ---
>  .../devicetree/bindings/mfd/spacemit,p1.yaml  | 86 +++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/spacemit,p1.yaml b/Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
> new file mode 100644
> index 0000000000000..5cc34d4934b54
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/spacemit,p1.yaml
> @@ -0,0 +1,86 @@
> +# 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 <troymitchell988@...il.com>
You can change it from this to my company email:
troy.mitchell@...ux.spacemit.com

Acked-by: Troy Mitchell <troymitchell988@...il.com>

                - Troy
> +
> +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;
> +                };
> +            };
> +        };
> +    };
> -- 
> 2.48.1
>