linux-kernel - Re: [PATCH v3 1/3] dt-bindings: hwmon: Add Microchip emc2305 yaml schema

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Message-ID: <Z8cp1xoIXT8lgD8T@lizhi-Precision-Tower-5810>
Date: Tue, 4 Mar 2025 11:27:03 -0500
From: Frank Li <Frank.li@....com>
To: florin.leotescu@....nxp.com
Cc: Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michael Shych <michaelsh@...dia.com>, linux-hwmon@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	viorel.suman@....com, carlos.song@....com,
	linux-arm-kernel@...ts.infradead.org, imx@...ts.linux.dev,
	festevam@...il.com, Florin Leotescu <florin.leotescu@....com>
Subject: Re: [PATCH v3 1/3] dt-bindings: hwmon: Add Microchip emc2305 yaml
 schema

On Tue, Mar 04, 2025 at 06:21:34PM +0200, florin.leotescu@....nxp.com wrote:
> From: Florin Leotescu <florin.leotescu@....com>
>
> Introduce yaml schema for Microchip emc2305 pwm fan controller.
>
> Signed-off-by: Florin Leotescu <florin.leotescu@....com>
> ---
>  .../bindings/hwmon/microchip,emc2305.yaml     | 43 +++++++++++++++++++
>  1 file changed, 43 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
>
> diff --git a/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml b/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
> new file mode 100644
> index 000000000000..cac0075a65bb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/microchip,emc2305.yaml
> @@ -0,0 +1,43 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/microchip,emc2305.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Microchip EMC2305 SMBus compliant PWM fan controller
> +
> +maintainers:
> +  - Michael Shych <michaelsh@...dia.com>

who is it? look like not Microchip and hwmon maintainer.

> +
> +description: |

Needn't |

> +  Microchip EMC2301/2/3/5 pwm controller which supports up
> +  to five programmable fan control circuits
> +
> +properties:
> +  compatible:
> +    enum:
> +      - microchip,emc2301
> +      - microchip,emc2302
> +      - microchip,emc2303
> +      - microchip,emc2305

According to your driver code look like all compatible with microchip,emc2301

oneOf:
  - enum:
      - microchip,emc2301
  - items:
      - enum:
          - microchip,emc2302
          - microchip,emc2303
          - microchip,emc2305
      - const: microchip,emc2301

So your driver just need one "microchip,emc2301" compatible string.

> +
> +  reg:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        emc2301: pwm@2f {
> +            compatible = "microchip,emc2301";
> +            reg = <0x2f>;

If only one reg:
You can go through trivial-devices.yaml

Frank

> +        };
> +    };
> --
> 2.34.1
>